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Portable personal conditioning systems: Transient modeling and system analysis
Applied Energy ( IF 11.2 ) Pub Date : 2017-10-18 , DOI: 10.1016/j.apenergy.2017.10.023
Rohit Dhumane , Jiazhen Ling , Vikrant Aute , Reinhard Radermacher

The existing Personal Conditioning Systems (PCS) have a limited market potential in spite of their energy savings potential and improved thermal comfort due to a combination of factors like retrofit costs, cooling limited to regions near installation and addition to building heat loads. We propose a novel concept of Portable Personal Conditioning System (PPCS) to address these challenges. PPCS includes a cooling system on an automated platform, which follows occupants to keep them comfortable. Four such cooling systems are presented: a vapor compression system (VCS), a chilled water based system, an ice storage based system and a phase change material storage based system. First-principles-based, transient multi-physics models were constructed for each system using Modelica to gain a more complete understanding of system performance and to quantify performance criteria such as minimum system weight and battery life. The article quantifies the trade-offs from the use of each system and is expected to motivate the development of portable personal cooling devices. System weights range from 19 to 31 kg with the chilled water system being the heaviest. The VCS consumes 40% more battery while delivering 170 W cooling at roughly twice the price of the chilled water system. The ice and phase change material based systems have weights comparable to the VCS and power consumption comparable to that of the chilled water based system.



中文翻译:

便携式个人调节系统:瞬态建模和系统分析

现有的个人调节系统(PCS)尽管具有节能潜力,但由于改造成本,冷却仅限于安装附近的区域以及建筑物的热负荷等因素的综合影响,其市场潜力有限,但热舒适性却有所提高。我们提出了一种便携式个人调节系统(PPCS)的新颖概念来应对这些挑战。PPCS在自动平台上包括一个冷却系统,该系统可以跟随乘员保持舒适。提出了四个这样的冷却系统:蒸气压缩系统(VCS),基于冷冻水的系统,基于冰存储的系统和基于相变材料存储的系统。以第一原理为基础,使用Modelica为每个系统构建了瞬态多物理场模型,以更全面地了解系统性能并量化性能标准,例如最小系统重量和电池寿命。本文量化了使用每个系统的权衡取舍,并有望促进便携式个人冷却设备的发展。系统重量从19到31 kg不等,其中冷冻水系统最重。VCS消耗40%的电池,同时提供170 W冷却,价格约为冷冻水系统价格的两倍。基于冰和相变材料的系统的重量可与VCS相媲美,而功耗可与基于冷冻水的系统相媲美。本文量化了使用每个系统的权衡取舍,并有望促进便携式个人冷却设备的发展。系统重量从19到31 kg不等,其中冷冻水系统最重。VCS消耗40%的电池,同时提供170 W冷却,价格约为冷冻水系统价格的两倍。基于冰和相变材料的系统的重量可与VCS相媲美,而功耗可与基于冷冻水的系统相媲美。本文量化了使用每个系统的权衡取舍,并有望促进便携式个人冷却设备的发展。系统重量从19到31 kg不等,其中冷冻水系统最重。VCS消耗40%的电池,同时提供170 W冷却,价格约为冷冻水系统价格的两倍。基于冰和相变材料的系统的重量可与VCS相媲美,而功耗可与基于冷冻水的系统相媲美。

更新日期:2017-10-18
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