风冷式PV/T空调系统夜间制冷性能实验研究  

Experimental Study on Night Refrigeration Performance of Air-cooled PV/T Air-conditioning System

作　　者：杨华[1] 徐建伟 李晗 冯关源 范满 YANG Hua;XU Jianwei;LI Han;FENG Guanyuan;FAN Man(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学能源与环境工程学院,天津300401

出　　处：《建筑节能（中英文）》2023年第8期69-74,共6页Building Energy Efficiency

摘　　要：提出了一种新型风冷式PV/T(光伏/光热)空调系统,并测试了系统在夏季夜间的制冷性能,研究了室内外空气温度对系统运行性能的影响。系统冷凝器由风冷式冷凝器和PV/T冷凝器串联组成,可以与周围空气进行对流换热,以及与低温天空进行长波辐射换热,在强化制冷效果的同时节约了冷凝器占地面积,为PV/T空调系统的发展提供新思路。实验结果表明,PV/T冷凝器能有效提高系统过冷度,PV/T冷凝器的冷却效果与冷凝温度呈正相关。风冷式PV/T空调系统制冷性能优于风冷式空调,其COP(性能系数)比风冷式空调高8.6%。当室外空气温度由23℃升高到27℃时,系统COP由3.9降低到3.1。当室内空气温度由20℃升高到24℃时,系统COP由3.1升高到3.5。A novel air-cooled PV/T(photovoltaic/photothermal)air-conditioning system is proposed and its refrigeration performance at night in summer is tested.The influence of indoor and outdoor air temperature on the operation performance is studied.The system condenser is composed of an air-cooled condenser and a PV/T condenser in series.During its operation,there are convective heat transfer with surrounding air and long wave radiation heat transfer with low-temperature sky.The refrigeration effect is strengthened and the occupied area is saved,providing a new idea for the development of PV/T airconditioning system.Experimental results show that the PV/T condenser can effectively improve the undercooling degree,and the cooling effect of PV/T condenser is positively correlated with the condensation temperature.The refrigeration performance of air-cooled PV/T air-conditioning system is better than that of air source heat pump,and its COP(coefficient of performance)is 8.6% higher than that of air source heat pump.When the outdoor air temperature increases from 23℃ to 27℃,the system COP decreases from 3.9 to 3.1.When the indoor air temperature increases from 20℃ to 24℃,the system COP increases from 3.1 to 3.5.

关 键 词：制冷性能 过冷度 风冷式冷凝器 PV/T冷凝器 性能系数 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程] TM615[电气工程—电力系统及自动化]