供冷供暖供生活热水蒸发式冷凝空调系统的应用
Application of evaporative condensation air conditioning system of cooling combined heating and domestic hot water supply
摘要：
针对目前供冷供暖供生活热水系统的热水温度达不到60 ℃，且系统能效较低的现状，提出了该空调系统作为解决方案，根据能源梯级利用原则，在不提高冷凝温度的同时回收了部分潜热及全部显热。介绍了热回收系统蓄热阶段、用热阶段和不用热阶段的工作模式。结合某工程实例，介绍了机组的详细参数以及热回收热水系统的设计计算，供冷期的运行分析结果表明，在不同负荷率工况下，热回收量均大于生活热水用热量，即在供冷期，可以免费提供生活热水。
Abstract：
Considering supplied domestic hot water temperature lower than the required 60 ℃ and lower system energy efficiency of the existed system, presents the new system as solution to the above situation. Performing the heat recovering according to cascad principle of energy use, recovers partial latent heat and total sensible heat while the condensing temperature is not risen. Presents the working modes of heat charging, discharging and standby of heat recovering system. With an actual project, presents the detailed parameters of the unit and design calculation of the heat recovering system. Operation analysis of cooling period shows that the heat recovering quantity is always more than heat demand of domestic water, namely, the free domestic hot water can be obtained in whole cooling period.
Keywords:cooling, domestic hot water, evaporative condensation air conditioning system, heat recovering, heat recovery, water tank volume