【摘要】 为了满足工业生产中高温用热的需求，解决常规热泵大温升性能低的问题，提出补气增焓复叠式高温热泵系统，利用工业中的废水余热来制备高温热水。通过MATLAB软件建立系统的热力学模型，并分析热源温度、供热温度、中间冷凝温度、相对补气量等因素对系统性能的影响。结果表明：系统循环性能参数C_OP均随供热温度升高而减小，随热源温度升高而增大。热源温度为40℃时，补气增焓系统最高制备140℃热水，C_OP为1.180,相同热源条件下，复叠式系统可制备150℃热水，C_OP为1.397;工况确定时，复叠式系统存在最佳中间温度，当热源温度为60℃,出水温度为120℃,最佳中间冷凝温度为80℃,复叠系统C_OP最大为2.838;热源温度为60℃时，中间换热温差从2℃增至10℃,复叠系统C_OP下降10.73%;当蒸发温度小于或接近35℃时，补气复叠式系统C_OP大于无补气系统，且系统存在最佳相对补气量，蒸发温度>35℃时，系统无补气必要。更多还原

【Abstract】 To meet the demand for high-temperature heat in industrial production and solve the problem of low performance of large temperature rise of conventional heat pumps, an enhanced vapor injection cascade high-temperature heat pump system was proposed, which used wastewater waste heat in industry to prepare high-temperature hot water. The thermodynamic model of the system was established by MATLAB software and the effects of heat source temperature, heating temperature, intermediate condensation temperature and relative vapor injection volume on the system property were analyzed. The results show that the C_OP of the system decreases with the increase of heating temperature and increases with the increase of heat source temperature. At a heat source temperature of 40 ℃, the vapor injection system can prepare up to 140 ℃ hot water with a C_OP of 1.180, and under the same heat source conditions, the cascade system can prepare 150 ℃ hot water with a C_OP of 1.397. When the working condition is determined, the optimum intermediate temperature exists for the cascade system, when the heat source temperature is 60 ℃, the outlet water temperature is 120 ℃, and the optimum intermediate condensing temperature is 80 ℃, the C_OP of the cascade system is maximum 2.838. At a heat source temperature of 60 ℃, and the intermediate heat transfer temperature difference increases from 2 ℃ to 10 ℃, the C_OP of the cascade system decreases by 10.73%. When the evaporation temperature is less than or close to 35 ℃, the C_OP of the injection cascade system is greater than that of the non-injection system, and there is an optimum relative vapor injection volume for the system, and when the evaporation temperature is greater than 35 ℃, there is no need for injection in the system.更多还原