摘要
通过实验方法开发中高温地热热泵工质。该工况要求是:冷凝温度80～100℃,蒸发温度25～35℃,同时保持系统内最高压力不超过2500kPa。实验表明非共沸工质R123/R290(质量百分比50%/50%)和R123/R290/R600a(质量百分比40%/50%/10%)能满足上述条件,且系统的COP在3 0以上。
How to solve the problem of heating in some areas and making the best of geothermal waste water through heat pump is the subject. Now the biggest barrier is to find proper working fluids, which can work under the condition of 80-100°C condensation temperature and 25-35°C evaporation temperature, and at the same time keep the biggest pressure in the system below 2500 kPa. Experimental results show that working fluids Rl23/R290 (50/50 by mass%) and R123/R290/R600a (40/50/10 by mass %) can meet the requirement of the working condition, and the coefficient of performance (COP) of the geothermal heat pump system(GHPS) is above 3.0.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2004年第2期211-215,共5页
Acta Energiae Solaris Sinica
关键词
地热热泵
新混合工质
Condensation
Geothermal energy
Wastewater
