R515B在中高温热泵系统中的性能研究  

Study on the Performance of R515B in Moderately High Temperature Heat Pump System

作　　者：沈中将 Shen Zhongjiang(Trane Technologies Engineering&Technology Center-Asia Pacific,Suzhou,215400)

机构地区：[1]特灵科技亚太研发中心,苏州215400

出　　处：《制冷与空调（四川）》2023年第5期656-663,674,共9页Refrigeration and Air Conditioning

摘　　要：对低GWP制冷剂R515B在双螺杆单级蒸汽压缩式热泵系统中的性能进行了研究。通过实验对比研究R515B直接替换R134a时系统的性能变化,结果表明:R515B的制热量比R134a降低27%左右,消耗功率比R134a降低约28%,制热COP比R134a平均提高1%,排气温度降比R134a低约15℃。同时建立热泵系统仿真模型,预测R515B在较高冷凝器出水温度下热泵系统的性能,结果表明:R515B具有优良的热力学性能和循环性能,在采用单级蒸汽压缩循环的中高温热泵系统中可实现88℃以下的高冷凝器出水温度。The performance of a single-stage steam compression heat pump system utilizing a low-GWP refrigerant R515B was studied.Experimental testing was conducted to compare the system performance when R515B was substituted for R134a.The results show that when R515B is used,the heating capacity of the system decreases by approximately 27%compared to R134a,while power consumption is reduced by about 28%.Additionally,when utilizing R515B,the heating COP is increased by an average of 1%,and the discharge temperature is approximately 15°C lower than with R134a.Moreover,a heat pump system simulation model was developed to predict its performance at higher condenser outlet temperatures.The results prove that R515B has superior thermodynamic and circulation performance and can achieve the high condenser leaving water temperature below 88℃in a moderately high temperature heat pump system using a single-stage steam compression cycle.

关 键 词：低GWP制冷剂 R515B 中高温热泵 试验对比 仿真模型 

分 类 号：TB612[一般工业技术—制冷工程]