In order to alleviate the problem of the reduction in system energy efficiency caused by large fluctuations in soil temperature after the medium-term operation of the liquid desiccant air conditioning system based on the complementary utilization of solar-geothermal energy in hot summer and winter areas,a liquid desiccant air conditioning system with complementary solar-geothermal-air multiple energy was proposed.The effects of complementary heating in the transitional season and in the heating season on the soil temperature rise and system energy-efficiency were studied.The results show that the soil temperature rises by 18.3 ℃ after 20 a of operation of the solar-geothermal complementary heating system,while the soil temperature of the new system has not obvious fluctuation during the 20 a of operation under two ways of complementary heating in the transitional season and the heating season.After 20 a of operation,the coefficient of performance COP of unit refrigeration and the system annual C0P for the solar-geothermal complementary system decrease by 30.5％and 24.5％,respectively,while these of the new system are stable in the rated values.The liquid desiccant air conditioning system based in the solar-geothermal-air multiple energy does not have the problem of soil thermal unbalance and can operate stably for a long time from the research results.
关键词
空调系统/运行优化/土壤温度/系统性能
Key words
air conditioning system/run optimization/soil temperature/system performance
维普
万方数据