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Research on variable parameter power differential charge–discharge strategy of energy storage system in isolated island operating microgrid Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2021-01-07 Tiezhou Wu; Jin Wang; Yibo Qi; Fumei Rong
This paper proposed an improved particle swarm optimization (PSO) algorithm for the variable parameter power difference charging and discharging strategy of battery energy storage system (BESS). The charge and discharge power of the BESS under different load intervals and state of charge (SOC) intervals are distributed, and the objective functions of peak shaving and valley filling standard deviation
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Using Wood’s glass to enhance the efficiency of a water solar disinfection (SODIS) apparatus with a Fresnel lens Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-12-30 Ammar Alkhalidi; Sameer Arabasi; Abeer Abu Othman; Tareq Sabanikh; Linda Mahmood; Qasem Abdelal
Solar disinfection, as a low carbon technology, is a sustainable and cost-effective water treatment method, which makes it more likely to be implemented in developing countries. It has been proven that ultraviolet light radiation is effective against pathogens and microorganisms. The aim of this paper is to evaluate the performance of solar disinfection apparatus that is equipped with Wood’s glass
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Mathematical evaluation of sloped solar chimney power plant for power generation in different regions of Nepal Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-12-19 Suresh Baral
Sloped solar chimney power plant (SSCPP) could be one of the appropriate technologies for powering Nepalese communities. The main components of the plant are chimney, collector and power-generating unit. In this study, the mathematical evaluation of the SSCPP has been conducted for the estimation of the power generation in Nepalese context. For the analysis, the mathematical models have been developed
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Optimal design of the solar tracking system of parabolic trough concentrating collectors Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-03 Kong L, Zhang Y, Lin Z, et al.
AbstractThe present work aimed to select the optimum solar tracking mode for parabolic trough concentrating collectors using numerical simulation. The current work involved: (1) the calculation of daily solar radiation on the Earth’s surface, (2) the comparison of annual direct solar radiation received under different tracking modes and (3) the determination of optimum tilt angle for the north-south
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Research on a balanced circuit and control strategy Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-02 Zhang L.
AbstractFor reducing the inconsistent state of charges (SOC) of lithium-ion battery cells and making the full use of battery packs, effective battery balancing technology should be used. In order to achieve the goal of balancing any single cell in the battery pack expediently and considering the cost and the balance efficiency, a balanced circuit is proposed. By changing the action state of single-pole
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Three-dimensional CFD modeling of thermal behavior of a disc brake and pad for an automobile Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-28 Kepekci H, Kosa E, Ezgi C, et al.
AbstractThe brake system of an automobile is composed of disc brake and pad which are co-working components in braking and accelerating. In the braking period, due to friction between the surface of the disc and pad, the thermal heat is generated. It should be avoided to reach elevated temperatures in disc and pad. It is focused on different disc materials that are gray cast iron and carbon ceramics
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Thermal comfort of urban spaces using simulation tools exploring street orientation influence of on the outdoor thermal comfort: a case study of Jeddah, Saudi Arabia Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-25 Hegazy I, Qurnfulah E.
AbstractAt present, the environmental quality of urban regions and outdoor spaces has turn out to be one of the main issues facing both climatologists and designers, which could be identified through their research outcomes. It is argued that the urban configuration affects the micro-climate of the urban outdoor spaces. The street’s orientation form was identified as an element, which impacts the urban
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Optimization of FAME composition for improved engine performance and emissions reduction Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-25 Awogbemi O, Inambao F, Onuh E.
AbstractContinuous application of biodiesel as an alternative fuel for compression ignition (CI) engines has necessitated the need to unearth an optimal mix to enhance engine performance and mitigated emissions. This particular work employed a numerical approach to solve linear equations generated for biodiesel properties using fatty acid (FA) composition for the determination of an optimal fatty acid
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Non-uniform sizing of PV cells in the dense-array module to match the non-uniform illumination in dish-type CPV systems Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-23 Lv H, Huang X, Li J, et al.
AbstractTo reduce the efficiency reduction caused by non-uniformity of illumination, a dense-array module with non-uniform sizing of photovoltaic (PV) cells is proposed for dish-type concentrating PV systems. The non-uniform-sized dense-array module has been designed and analyzed theoretically at the ideal irradiance of Gaussian distribution, which consists of 48 silicone solar cells. Using the ZEMAX
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Thermal properties of sonicated graphene in coconut oil as a phase change material for energy storage in building applications1 Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-22 Safira L, Putra N, Trisnadewi T, et al.
AbstractThis study aims to investigate the thermal properties of a phase change material (PCM) based on coconut oil for building energy storage applications. Coconut oil is classified as an organic PCM composed of fatty acids made from renewable feedstock. However, low thermal conductivity is one of the major drawbacks of organic PCMs that must be improved. Graphene could be an effective material to
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Application of PID optimization control strategy based on particle swarm optimization (PSO) for battery charging system Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-17 Wu T, Zhou C, Yan Z, et al.
AbstractThe battery charging process has nonlinear and hysteresis properties. PID (Proportion Integration Differentiation) control is a conventional control method used in the battery charging process. The control effect is determined by the PID control parameters ${K}_p$, ${K}_i$ and ${K}_d$. The traditional PID parameter setting method is difficult to give the appropriate parameters, which affects
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Building envelope and energy saving case study: a residential building in Al-Riyadh, Saudi Arabia Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-05 Al-Qahtani L, Elgizawi L.
AbstractAround the world, most energy is consumed by buildings; residential buildings consume 40% of energy globally. In the Kingdom of Saudi Arabia (KSA), buildings consume 50% of all energy, and 70% of the buildings in the KSA are not insulated well. Creating an envelope is a key to decreasing energy consumption and providing thermal comfort and healthy internal spaces. Thus, the main aim of this
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Experimental and numerical investigation of a novel photovoltaic/thermal system using micro-channel flat loop heat pipe (PV/T-MCFLHP) Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-03 Chen F, Hu M, Badiei A, et al.
AbstractIn this paper, a novel photovoltaic/thermal system using micro-channel flat loop heat pipe (PV/T-MCFLHP) is proposed, and the thermal and electrical performance of the system is investigated theoretically and experimentally. The variations of temperatures were analysed, and the efficiency of the system was calculated under different conditions, i.e. simulated solar radiation, water flow rate
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Thermal degradation and kinetic analysis of organic constituents in coal-gasification wastewater with a novel treatment Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-04-08 Zhang W, Wang S.
AbstractThe traditional treatment of coal-gasification wastewater produces high solvent and operation cost, secondary pollution and long processing cycle. The aim of the paper was to attempt an alternative approach of wastewater treatment in coal gasification process. With wastewater being heated and sprayed into the gasifier, water participates in the water–gas shift reaction; meanwhile, organic constituents
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Research of cooling load & chiller selection in metro station Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-04-07 Wang Z, Zhong J, Pan Z.
AbstractAir conditioning is of the most energy saving potential system in the metro station. This study analyzes the composition and characteristics of air conditioning cooling load in a metro station. The hourly distribution and the proportion of each cooling load are calculated. The results show that cooling load fluctuation of metro air conditioning is large, and the operating time of different
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Ecological footprint for environmental sustainability in Ilorin Metropolis, Kwara State, Nigeria Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-23 Mary Fadeyibi; Henry O Sawyerr; Gabriel Salako
Ecological footprint (EF) is an indicator that accounts for human demand in the environment compared with the sizes of the bio-productive land and sea areas. This research was carried out to determine the EF for environmental sustainability in Ilorin Metropolis. Empirical surveying, which involved systematic random sample technique, was used to select residential households in each community for this
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Thermodynamic and financial assessment of concentrated solar power plant hybridized with biomass-based organic Rankine cycle, thermal energy storage, hot springs and CO2 capture systems Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-22 Suresh Baral
The present study aims to investigate the thermodynamic and financial aspect of concentrated solar power (CSP) plant hybridized with biomass-based organic Rankine cycle (ORC), thermal energy storage (TES), hot springs and CO2 capture systems. The organic working fluids namely R123, R235fa, D4 and MDM are selected for designing the hybrid system at different operating conditions. The nominal power capacities
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Incentives or restrictions: policy choices in farmers’ chemical fertilizer reduction and substitution behaviors Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-17 Yurong Yang; Zhaoliang Li; Yan Zhang
Based on 804 samples of farmers in Hubei Province, a typical major grain-producing area in China, this study empirically analyzed the effects of two different policy tools, i.e. economic incentives (subsidies) and order enforcements (regulatory restrictions), as well as the effects of their interaction, on farmers’ chemical fertilizer reduction and substitution behaviors. Samples were grouped according
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Theoretic analysis and experimental evaluation of the spectrum transmission coefficient of a multilayer photovoltaic vacuum glazing Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-15 Lv Q, Cui J, Jarimi H, et al.
AbstractThis paper introduces an innovative thin film PV vacuum glazing (PV-VG) technology. In addition to electricity generation, the PV-VG glazing can also reduce heat loss from the building in winter and reduce heat gain in summer. In building integrated photovoltaics application, optical characterization of the PV glazing is important in determining the solar ray transmission and thermal transfer
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Energy analysis of cyclic parameters of organic Rankine cycle system Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-11 Jinglu Yan; Wenguang Jia; Kunling Li; Hang Yu; Xianpei Guo
Geothermal energy is a kind of green and non-polluting renewable energy. Medium and low-temperature geothermal energy below 150 °C is usually used directly for heating, industrial and agricultural heating, bathing, etc., and the utilization rate is low. Organic Rankine cycle (ORC) system can be used in a low-temperature geothermal power generation systems. Thermodynamic analysis of the thermal cycle
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Discrete optimization algorithm for optimal design of a solar/wind/battery hybrid energy conversion scheme Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-10 Weiping Zhang; Akbar Maleki; Ali Komeili Birjandi; Mohammad Alhuyi Nazari; Omid Mohammadi
Renewable energy technologies have been developed in recent years due to the limited sources of fossil fuels, the possibility of depletion of fossil fuels and the related environmental issues. In these types of systems, it is crucial to reach optimum sizing in order to have an affordable system based on solar and wind energy and energy storage. In this study, a powerful optimization scheme based on
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An experimental investigation into a novel small-scale device for energy harvesting using vortex-induced vibration Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-03 Farshad Moradi Gharghani; Mohamad Ali Bijarchi; Omid Mohammadi; Mohammad Behshad Shafii
Renewable energies could be a good solution to the problems associated with fossil fuels. The storage of wind energy by means of small-scale devices rather than large-scale turbines is a topic that has gained lots of interest. In this study, a compact device is proposed to harvest wind energy and transform it into electrical energy, by means of oscillations of a magnet into a coil, using the concept
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Developing the transformation of scientific and technological achievements in colleges and universities to boost the development of low-carbon economy Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-03 Weijuan Li; Pengcheng Zhang
In this work, the network data envelopment analysis (DEA) model was used to divide the transformation of scientific and technological achievements in colleges and universities into two stages, which makes up for the lack of process measurement in a single DEA model. Also, the relationship between the transformation efficiency of scientific and technological achievements in universities and the development
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Comparative investigation of performance of gas dryer and two other types of domestic clothes dryers Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-09-03 Xiao-Mei Huang; Lian-Sen Xiong; Yan-Wen Zheng; Hui-Qing Liu; Yi-Zhen Xu; Yong-Cai Li
The moisture extraction rate (MER) and energy efficiency of domestic gas clothes dryers, heat-pump clothes dryers and electric clothes dryers were assessed. The assessment was performed with regard to five indices: the MER, specific MER, specific thermal energy consumption for dehumidification (mSPC), energy efficiency (ηt) and primary energy efficiency (η1). The effects of the dry mass of clothes
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Research on frequency modulation control of photovoltaic power generation system based on VSG Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-26 Chunlai Li; Shun Yuan
In order to improve the friendliness of the grid connection of new energy power generation, the new energy photovoltaic (PV) unit is equivalent to a synchronous generator in the power system and a virtual synchronous generator (VSG)-controlled PV energy storage complementary grid-connected power generation system model is established and studied to analyze the VSG. When power is supplied to the load
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Effects of evaporation parameters on recuperative transcritical organic Rankine cycle using binary mixture fluids Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-25 Jui-Ching Hsieh; Chu-Hong Cheng
In this study, thermodynamic analysis was performed on basic and recuperative transcritical organic Rankine cycles by using five pure and six mixed fluids. The effects of evaporation parameters on the first- and second-law efficiencies (ηI and ηII) as well as power output were investigated. The results indicate that a recuperator had a positive effect on the ηI and ηII and negative effects on the specific
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Study on roof-mounted radiant cooling system for LNG-fueled refrigerated vehicles Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-25 Fang Wang; Mengchu Li; Yanling Zhang; Xianfei Liu; Dong Xie; Qiongwei Zhang; Huiling Yang
A roof-mounted radiant cooling system incorporating a bypass structure, intended for use on liquid natural gas (LNG)-fueled refrigerated vehicles and offering stable dynamic regulation was designed. A model was established using the TRNSYS software package to simulate the operation of this system, and the effects of various factors on the refrigeration performance were analyzed. The quantitative relationship
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Research on optimization strategy of grid frequency modulation based on doubly-fed wind turbines Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-24 Chao Wang; Jianyuan Xu; Liang Wang; Dan Song
The increasing global energy and environmental problems are encouraging to the development and utilization of renewable and clean energy in various countries. Wind power is one of the major source in large-scale renewable energy applications. However, the frequency regulation becomes a critical issue while the technology is spreading. Research on the frequency modulation (FM) technology of wind turbines
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Comparison of nZEB indicators for hotel renovations under different European climatic conditions Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-24 Filipe O Cunha; Armando C Oliveira
Hotels hold an important role in the energy efficiency policies of the European Union (EU), as they are typically ranked among the top energy consumers in the non-residential sector. However, a significant amount of the energy used in hotels is wasted, leaving ample room for enhancing energy-efficiency and resource conservation. Indeed, energy refurbishment of the hotel building stock is crucial in
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Mechanical and morphology properties of titanium oxide-epoxy nanocomposites Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-24 Tayser Sumer Gaaz; Emad Kamil Hussein; Kussay Ahmed Subhi; Ahmed Al-Amiery
In the current work, the influences of titanium oxide (TO) on nanocomposites using epoxy (EP) resin have been investigated. EP resin was added to various contents in terms of volume of TO (6%). Based on the casting method, the TO-EP nanocomposites were prepared. Mechanical properties in terms of tensile, impact and hardness properties exhibited improvements in the mechanical results of the TO-EP nanocomposites
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Is it a possibility to achieve energy plus prefabricated building worldwide? Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-15 Ammar Alkhalidi; Abeer Abuothman; Abdallah AlDweik; Al-Hamza Al-Bazaz
Prefabricated buildings constructed to be used in a specific region cannot be assumed to work unconditionally in different climates around the world. It is important to develop passive house solutions for each location, suitable for the actual climate and geographic conditions. Shelters could be used in different applications such as refugee housing or telecommunication stations. Photovoltaic energy
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Design of a partially premixed burner for biogas-fired wall-mounted boiler Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-11 Mengxiao Sun; Xiaomei Huang; Yi Zhao; Pengyuan Zhang; Yang Zhou
Biogas is deemed as one of the most promising renewable fuels emerging in the past several decades. At present, biogas is mainly applied to cooking for substituting fossil fuels. However, biogas is rarely reported to be used for space heating. In this paper, we designed a biogas-fired partially premixed burner for gas-fired wall-mounted boilers, which has the heat input of 25 kW and can be used for
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Parametric analysis of a combined ejector-vapor compression refrigeration cycle Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-15 I Ouelhazi; Y Ezzaalouni; L Kairouani
From the last few years, the use of efficient ejector in refrigeration systems has been paid a lot of attention. In this article a description of a refrigeration system that combines a basic vapor compression refrigeration cycle with an ejector cooling cycle is presented. A one-dimensional mathematical model is developed using the flow governing thermodynamic equations based on a constant area ejector
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Optimization of floor radiant air conditioning heating system in building heating design Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-05 Hongpu Liang
For areas with hot summer and cold winter, air conditioning is an essential tool to improve the living environment, but the traditional air conditioning needs to consume a lot of energy in cooling and heating, the fan operation noise is large and the sense of blowing will be uncomfortable. This paper briefly introduced the basic structure of a ground-source heat pump-floor radiant air conditioning
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Research on battery pack dynamic equalization technology with improved flying capacitor Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-08-04 Huang Chen
Aiming at the problem that the traditional flying capacitor equalization circuit has long equilibrium time and complicated structure, based on the in-depth study of the existing capacitor equalization method, this paper proposes a bidirectional DC-DC equalization circuit topology based on switch matrix. Structure, improve circuit switch network structure, reduce the number of switches and capacitors
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Research on the synergy incentive evolution among the EPC subjects of energy efficiency retrofitting of existing buildings from the perspective of fairness cognition Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-29 Yanping Yang; Bojun Wang; Xiaodan Liu
In the energy performance contracting (EPC) mode, the energy services company (ESCO) involved in energy efficiency retrofitting of existing buildings often faces the parallel construction of multiple tender segments and multi-professional subcontractors. The one-to-many structure for ESCO and subcontractors causes difficulties to the project quality management and directly affects the effect of energy
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Energetic and exergetic studies of modified CO2 transcritical refrigeration cycles Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-22 Omprakash S Patil; Shrikant A Shet; Manish Jadhao; Neeraj Agrawal
Thermodynamic analysis including energetic and exergetic analysis is carried out employing Engineering Equation Solver for the five modified cycles: dual expansion cycle, internal heat exchanger cycle, work recovery cycle, work recovery with internal heat exchanger cycle and vortex tube expansion cycle. Contours are developed to study the effect of gas cooler temperatures and evaporator temperatures
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Experimental studies on corrosion inhibition performance of acetylthiophene thiosemicarbazone for mild steel in HCl complemented with DFT investigation Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-22 S Al-Baghdadi; T S Gaaz; A Al-Adili; A A Al-Amiery; M S Takriff
The University of Technology in Baghdad addresses problems related to the corrosion of metals. In the present investigation, a thiophene derivative, namely, 2-acetylthiophene thiosemicarbazone (2-AT), was synthesized and examined as a corrosion inhibitor for mild steel in a 1-M hydrochloric acid environment by using weight loss and scanning electron microscopic techniques. The inhibition efficiency
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Multi-stage heat-pipe heat exchanger for improving energy efficiency of the HVAC system in a hospital operating room 1 Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-22 Ragil Sukarno; Nandy Putra; Imansyah Ibnu Hakim; Fadhil Fuad Rachman; Teuku Meurah Indra Mahlia
The demands of specific requirements related to thermal comforts, such as temperature, relative humidity, inside air exchange and other factors required in a hospital operating rooms, have necessitated the development of energy-efficient heating, ventilation and air conditioning (HVAC) systems and efficient heat-recovery system using a heat-pipe heat exchanger (HPHE). The experiment was conducted by
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Rheological characteristics of polyethylene-nanotube composites by capillary rheometry Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-21 S Al-Baghdadi; A Al-Amiery
The viscosity and flow rate as rheological characteristics are fundamental in evaluating the nanofillers in processing the polyethylene-nanotube (PE-NT) composite in injecting molding. The purpose of this investigation is to study the rheological conduct of PE-NT composite plastic feedstock through capillary rheometry. For the purpose of obtaining a flawless component, the feedstock is used as a critical
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Investigating the transformation efficiency of scientific and technological achievements in China’s equipment manufacturing industry under the low-carbon economy Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-21 Weijuan Li; Pengcheng Zhang
The development of a low-carbon economy is an inevitable choice for the world to coordinate industrial economic growth and environmental issues actively. At the same time, science and technology are the cornerstones for the development of a low-carbon economy. The equipment manufacturing industry (EMI) in China is known as the base of the low-carbon sector. Still, the research of coordinating industry
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Variation of ignition sensitivity characteristics of non-stick coal dust explosions Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-21 Di Sha; Yucheng Li; Xihua Zhou; Ruiqing Li
The ignition and explosion of coal dust are significant hazards in coal mines. In this study, the minimum ignition temperature and energy of non-stick coal dust were investigated empirically at different working conditions to identify the key factors that influence the sensitivity and characteristics of coal dust explosions. The results showed that for a given particle size, the minimum ignition temperature
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Impact of perceived social norms on farmers’ behavior of cultivated land protection: an empirical analysis based on mediating effect model Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-21 Wenwen Qiu; Zhangbao Zhong; Ya Huang
In this study, the impact of social norms on farmers’ behavior of cultivated land protection and the related mechanism was investigated in terms of direct effect and mediating effect and further verified by logistic and mediation effect estimation of different organic fertilizer application behaviors. An empirical analysis of the data collected from Xiajin County of Shandong, China, revealed that (1)
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Withering of tea leaves using heat pipe heat exchanger by utilizing low-temperature geothermal energy Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-07-14 Yohanes Gunawan; Nandy Putra; Imansyah Ibnu Hakim; Dinni Agustina; Teuku Meurah Indra Mahlia
The volume of Indonesian tea exports to the European Union (EU) decreased by 43% in 2014 because of the EU setting a maximum residue limit of anthraquinone (AQ) for tea as 0.02 mg/kg. The content of AQ in tea leaves increases when there is incomplete combustion in the combustion of firewood for the energy source of withering and drying of tea leaves. This study aims to develop and test a new concept
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Performance investigation of a micro-channel flat separated loop heat pipe system for data centre cooling Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-18 Menglong Hu; Liang Luo; Ali Badiei; Fucheng Chen; Siming Zheng; Zhangyuan Wang; Xudong Zhao
This paper investigates a novel micro-channel flat separated loop heat pipe system for cooling the information technology equipment in the data centres through theoretical and experimental analysis and by assessing the impact of the inlet water temperature on system performance. A computer model is developed to simulate the steady-state performance of the micro-channel flat separated loop heat pipe
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Low-carbon design for product packaging: a case study on wineglass Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-15 Feng Xu; Jiao-Jing Pan
The study on carbon emissions in packaging industry is a very important but easily overlooked field. In order to explore carbon emissions of the packaging life cycle, the wineglass is used as the packaging object to discuss the difference between carbon emissions and costs caused by two new packaging structures and a common packaging structure on the market. The measurement boundary includes raw material
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Promoting sustainability through governance of eco-city indicators: a multi-spatial perspective Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-13 Wu Deng; Ali Cheshmehzangi; Yuanli Ma; Zhen Peng
The purpose of this paper is to present a case study of the latest practice on urban sustainability in China, focusing on the breakdown of city-wide overall indicators to a more controllable spatial level—i.e. individual land plots and individual buildings. We argue the importance of decomposing the indicators to smaller scales by understanding underlying principles such as indicators and their integration
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Feasibility of hybrid renewable heating system application in poultry house: a case study of East Midlands, UK Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-13 Yuanlong Cui; Elmer Theo; Tugba Gurler; Yuehong Su; Riffat Saffa
Currently, there has been an obvious lack of innovation within poultry houses heating, ventilation and air conditioning (HVAC) system design that deals with both energy efficiency and poultry welfare issues. This paper presents an innovative and renewable heating system for poultry house application to meet the welfare living environment requirement for breeding, to improve the energy efficiency of
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Post-occupancy evaluation of outdoor thermal comfort in hot arid zone Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-12 Rawan Shawesh; Mady Mohamed
Human comfort and healthy environments lie at the core of every debate about outdoor spaces nowadays. Thermal comfort is a vital concern for planners and designers in order to produce a healthy and thermally comfortable environment, since the influence of different climates and user groups has been found to greatly alter the range of responses for thermal comfort calculations. This requires Post-Occupancy
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Modelling of energy and exergy analysis of ORC integrated systems in terms of sustainability by applying artificial neural network Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-08 Zafer Utlu; Mert Tolon; Arif Karabuga
The present study focuses on the organic Rankine cycle (ORC) integrated into an evacuated tube heat pipe (ETHP), whose systems are an alternative solar energy system to low-efficiency planary collectors. In this work, a detailed thermodynamic and artificial neural network (ANN) analysis was conducted to evaluate the solar energy system. One of the key parameters of sustainable approaches focused on
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Optimal power distribution method for energy storage system based on available capacity Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-06 Liu Gege
In order to eliminate the difference of the state of charge (SOC) among parallel battery energy storage systems, an optimization method of power distribution based on available capacity is proposed in this paper. The objective function and constraints are established to realize the optimal power allocation of battery energy storage and to improve the stability of the energy storage system. The simulation
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Experimentally economic analysis of ORC power plant with low-temperature waste heat recovery Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-05 Lei Li; Leren Tao; Qingpu Li; Yongpan Hu
Due to the low boiling point of organic fluids, the organic Rankine cycle (ORC) is an effective way to improve the recovery efficiency of low-temperature waste heat. An ORC power plant was established with an actual generating capacity of 16.3 kW. As the ORC technology is in the initial stage of commercial application, a technical and economic analysis has been conducted in this paper. Through analysis
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Ecological efficiency management of tourism scenic spots based on carbon footprint analysis Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-06-02 Yang Li; Lei Zhang
The analysis of carbon footprint plays an important role in the management of tourism scenic spots. This paper first introduced the calculation method of carbon footprint and ecological efficiency value of tourism scenic spots, then analyzed the general situation of tourism scenic spots in Jiangsu province and collected the data of 2013–17 to calculate the carbon footprint and ecological efficiency
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Investigation and modeling of energy consumption of tall office buildings in Iran's `hot-arid' and `cold' climate conditions Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-28 Mohammad Mehdi Ghiai; Jamal Tabe Arjmand; Omid Mohammadi; Mohammad Hossein Ahmadi; Mamdouh El Haj Assad
The construction of high-rise buildings has attracted human attention at the beginning of human civilizations’ formation. Presently, making tall buildings is considered as a necessary requirement due to the succeeding reasons: the population increase, the tendency to live in urban centers, the land utilization in the most populated centers of the cities, the need to decrease the cost of horizontal
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A review of coupled heat and mass transfer in adiabatic liquid desiccant dehumidification and regeneration systems; advances and opportunities Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-25 Andrew A Y Oyieke; Freddie L Inambao
In this paper, a comprehensive technical review of liquid desiccant (LD) dehumidification and regeneration techniques is presented. The operational features, processes and performance indices of various flow configurations of adiabatic dehumidifier and regenerator are extensively covered. The heat and mass transfer assessment is presented in terms of past experimental and modelling evaluations and
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Capacity allocation of HESS in micro-grid based on ABC algorithm Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-06 Yu Zhang; Zhe Yan; Cui Cui Zhou; Tie Zhou Wu; Yue Yang Wang
The hybrid energy storage system (HESS) is a key component for smoothing fluctuation of power in micro-grids. An appropriate configuration of energy storage capacity for micro-grids can effectively improve the system economy. A new method for HESS capacity allocation in micro-grids based on the artificial bee colony (ABC) algorithm is proposed. The method proposed a power allocation strategy based
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Spatial monitoring of urban growth of Mansoura City, Egypt Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-05-03 Ibrahim Rizk Hegazy; Mansour Rifaat Helmi
Urbanization is a global trend determined primarily by excessive population growth, particularly in the developing countries such as Egypt. The configuration and boundaries of urbanization and their model can be observed at a distance of space and time. In this research, geographic information system and remote sensing were used to analyze urbanization and trends in the past 30 years of Mansoura City
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Modeling and simulation of a small-scale solar-powered absorption cooling system in three cities with a tropical climate Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2020-01-16 Boero A, Agyenim F.
AbstractThis study assessed through numerical simulations, the technical feasibility of a solar-powered absorption cooling system for a small-scale application in an office building in three different cities with a tropical climate in Ecuador. The model and simulations were performed using the dynamic transient software TRNSYS and were compared and validated using experimental data obtained from a
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Optimization of Sludge Fermentation for Volatile Fatty Acids Production Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2019-12-08 Sultan K Salamah; Andrew A Randall
Prefermentation of primary solids can produce volatile fatty acids (VFAs), and operational strategies may affect the propionic acid content. In this study, three prefermenter phases were used to optimize VFAs using three separate strategies. The phases were (i) glycerol (biodiesel by-product) co-fermentation with primary solids, (ii) the effect of mixing energy on the co-fermentation of glycerol and
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Review on window-glazing technologies and future prospects Int. J. Low Carbon Technol. (IF 1.622) Pub Date : 2019-12-05 Jorge Luis Aguilar-Santana; Hasila Jarimi; Mariana Velasco-Carrasco; Saffa Riffat
Windows are one of the significant indicators of the energy efficiency of a building and have undergone extensive research since the last decades. This paper reviews the performance of various window technologies covering the physical and optical properties of traditional windows and advanced window technologies. In window technologies, one of the most critical parameters is its thermal transmittance