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Experimental Research on Heat and Mass Transfer for Solar Energy Regenerator

Author: HanJunZhao
Tutor: PeiQingQing
School: Guangzhou University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: collecter/regenerator falling-film heat and mass transfer collector efficiency
CLC: TU831
Type: Master's thesis
Year: 2007
Downloads: 161
Quote: 5
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Abstract


The solar liquid desiccant air conditioning system without pollution to the environment can save electricity power and utilize the low-grade heat. Hence there is wide prospect of application for it.The low regeneration performance of the solar liquid desiccant air conditioning system is one of the urgent problems. The collecter/regenerator has the function of both solar collector and regenerator and so is simple in structure. The solution in it can be concentrated utilizing solar energy at lower temperature. So the solar energy utilization efficiency of the collecter/regenerator is highThe theoretic analysis of the heat and mass transfer in collector/regenerator was carried out. The experimental study on regeneration process was also done with different solutions. The influence of the inlet solution concentration, temperature and solution flow rate, inlet air flow rate, temperature and air humidity was studied with different desiccants solution(calcium chloride, lithium chloride and mixture solution).The results show: the lower the inlet solution concentration and air humidity is, the higher the evaporation rate and the collector efficiency is. The evaporation rate and the collector efficiency will be higher when the inlet solution temperature rise. But the influence of inlet air temperature on it is not obvious.The regeneration performance of calcium chloride is optimal, but the performance of lithium chloride is bad at the same condition. The mix solution is one kind of high performance-cost ratio solution Based on dehumidification and regeneration

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Air-conditioning
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