Experiment on heating performance of air-conditioning and radiant floor heating dual supply systems
The experimental research is conducted on the influence of water side elec-tronic expansion valve opening on the heating performance and reliability of air-condition-ing and radiant floor heating dual supply systems.The results show that as the water side electronic expansion valve opening gradually decreases from 480 to 200 steps,the heating capacity and coefficient of performance of the system show an upward trend,with a maxi-mum increase of 6.1％in heating capacity and 3.9％in coefficient of performance.Howev-er,when the water side electronic expansion valve opening is below 200 steps,the heating capacity and coefficient of performance show a sharp downward trend,and the exhaust temperature shows a upward trend,which affects the reliable operation of the system.There-fore,for the operation of the air-conditioning and radiant floor heating dual supply sys-tems,there is an optimal set value for the water side electronic expansion valve opening,and it is not possible to simply reduce the opening of the electronic expansion valve to achieve the improvement of heating performance of the system.
air-conditioningelectronic expansion valveexhaust temperaturesubcool-ingheating capacitycoefficient of performance
万方数据
维普
