Abstract:Remaining heat accumulates in underground commercial space, because of its special building envelope, the earth. Although exhaust air heat recovery is popularly adopted in air-conditioning systems to make use of it, there is still plentiful potential on heat recovery. This paper brought up an integrated heat recovery air-conditioning system (IHRACS) with double-heating series-wound heat pump, which mainly consists of water chillers, air-handling units (AHU), air-source heat pumps (ASHP), high temperature water-to-water heat pumps (WWHP), etc. In this system, not only waste heat/cool in exhaust air is recovered by ASHPs, but also condenser heat of chillers by WWHPs. For each part of the system, including water chiller, high temperature WWHP and ASHP, quasi-dynamic modelling based on each thermal balance state was implemented respectively. Based on theseand the fact ofan underground shoppingcenterinHarbin,China, energy performance was calculated under year-round air-conditioning load in summer, winter and transition season respectively. According to year-round simulation result, IHRACS consumeselectricity by40.6 kWh/m2, andsaves equivalent primaryenergy by 393 MJ/m2compared to a conventional system (electricchiller + AHU), besides domestic hot-water supply.Furthermore, it’s believedthatthissystem can be applied in most cities inChina, with a potential of saving more energy than inHarbin.
Key words:Exhaust air heat recovery, Condenser heat recovery, Heat pump, Domestic hot-water supply, Energy saving
Ling Ye, Yiqiang Jiang, Yang Yao, Zuiliang Ma, Fuhe Lu.An Integrated Heat Recovery Air-Conditioning System (IHRACS) with Double-Heating Series-Wound Heat Pump Part 1: Scheme and Performance.InProceedings of 6th International Symposium on Heating, Ventilating and Air Conditioning,Nanjing,China, 2009
IDS number: BOB72
UT ISI: 000276109800226
带二次加热串联热泵的综合热回收空调系统：原理和性能（ISTP检索）
