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Experimental comparison analysis of two heat transfer enhancement methods on a thermochemical reactor
International Journal of Low-Carbon Technologies ( IF 2.4 ) Pub Date : 2021-01-08 , DOI: 10.1093/ijlct/ctaa093
Xiaojing Han 1 , Shuli Liu 1 , Cheng Zeng 2 , Yongliang Shen 1 , Liu Yang 1
Affiliation  

This paper experimentally investigates the performance of a thermochemical reactor for space heating using two heat enhancement methods, copper fins and copper plates. It is evaluated under laboratory conditions with the varying inlet air relative humidity and inlet air flow rate. The evaluated parameters are the reactor air pressure drop, outlet air temperature and outlet water temperature. While improving the reactor performance, the study presents comparative reactor performance of the two methods. The study shows that the copper plate reactor achieves a better desorption performance than the copper fin reactor. In charging, the copper plate reactor can reach the maximum outlet air temperature lifts at 95.1°C in 0.35 h, which is 12.3°C higher than copper fin reactor under the same conditions. In discharging, the peak reactor outlet air temperatures for the two reactors are found under different inlet air flow rate for the different internal air flow characteristics resulted from the copper fins and plates. Also, the copper fin reactor presents higher pressure drop than the copper plate reactor. Additionally, the copper fin reactor presents a slightly higher outlet water temperature in discharging than the plate reactor for the relatively larger thermal contact area between the copper fins and water pipe. Further research should be conducted in improving the reactor performance including reducing the heat loss, reactor optimisation and identifying suitable operating conditions.

中文翻译:

热化学反应器中两种强化传热方法的实验比较分析

本文通过实验研究了使用两种散热增强方法(铜翅片和铜板)进行空间加热的热化学反应器的性能。在实验室条件下,随着进气相对湿度和进气流量的变化,对它进行评估。评估的参数是反应堆空气压降,出口空气温度和出口水温。在提高反应堆性能的同时,研究提出了两种方法的比较反应堆性能。研究表明,铜板反应器比铜翅片反应器具有更好的脱附性能。在装料过程中,铜板反应器可在0.35小时内达到95.1°C的最高出口空气温度升高,比相同条件下的铜翅片反应器高12.3°C。在放电时 对于两个反应堆的最高出口空气温度,是在不同的入口空气流量下发现的,这是由于铜散热片和铜板导致的内部空气流动特性不同。而且,铜翅片反应器比铜板反应器具有更高的压降。另外,对于铜翅片和水管之间的相对较大的热接触面积,铜翅片反应器在排出时呈现出比板式反应器稍高的出口水温。应在改善反应堆性能方面进行进一步研究,包括减少热量损失,优化反应堆并确定合适的运行条件。与铜板反应器相比,铜翅片反应器的压降更高。另外,对于铜翅片和水管之间的相对较大的热接触面积,铜翅片反应器在排出时呈现出比板式反应器稍高的出口水温。应在改善反应堆性能方面进行进一步研究,包括减少热量损失,优化反应堆并确定合适的运行条件。与铜板反应器相比,铜翅片反应器的压降更高。另外,对于铜翅片和水管之间的相对较大的热接触面积,铜翅片反应器在排出时呈现出比板式反应器稍高的出口水温。应在改善反应堆性能方面进行进一步研究,包括减少热量损失,优化反应堆并确定合适的运行条件。
更新日期:2021-01-08
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