耦合排风热回收与空气源热泵的新型通风系统在冬奥临时用房的应用

作者：张文聂金哲刘兵李函龙

单位：北京建筑大学北京摩盒科技有限公司

摘要：为保证冬奥赛事的正常进行，冬奥场地尤其是高山滑雪场地中建设有大量的临时用房。传统的临时用房通常以排风扇或自然通风作为主要的通风方式，在严寒气候条件下，送风温度及气流组织无法保障，导致室内热舒适度低，通风能耗大。基于绿色办奥理念，2022冬奥会北京延庆高山滑雪中心临时用房中使用了一种耦合排风热回收与空气源热泵的新型通风系统。对该系统在冬奥会期间的实际性能进行了测试，结果显示，冬奥会期间该系统平均供热性能系数为2.1～2.8,空气源热泵平均供热性能系数为1.6～2.4,是一种有效的节能环控系统。在分析冬奥会期间室内外热环境后，进行了系统理论建模，得出该系统理论平均供热性能系数可达到4.9～5.9,空气源热泵理论平均供热性能系数为3.3～4.1,实际系统仍有优化空间。为进一步提升系统性能和运行稳定性，应注意低温条件下热回收器内部的结霜问题，并选用喷气增焓低温空气源热泵和热回收效率更高的换热模块。

关键词：排风热回收空气源热泵新型通风系统冬奥临时用房能耗严寒气候

作者简介：张文,女,1997年生,硕士研究生;*聂金哲,100044北京市西城区展览馆路1号北京建筑大学,E-mail:niejinzhe@163.com;
基金：国家重点研发计划项目“科技冬奥专项”(编号：2021YFF0306305);

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Application of a new ventilation system coupling exhaust air heat recovery and air-source heat pump in temporary housings for Olympic Winter Games

Zhang Wen Nie Jinzhe Liu Bing Li Hanlong

(Beijing University of Civil Engineering and Architecture Box2go Technology Co., Ltd.,Beijing)

Abstract: In order to ensure the normal progress of Olympic Winter Games, numerous temporary housings have been built in the Olympic Winter Games venues, especially the alpine skiing venues. Traditional temporary housings usually use exhaust fans or natural ventilation as the main ventilation methods. In severe cold climates, the supply air temperature and air distribution can not be guaranteed, resulting in low indoor thermal comfort and high ventilation energy consumption. Based on the concept of green Olympics, a new ventilation system coupling exhaust air heat recovery and air-source heat pump is used in the temporary housing of Beijing Yanqing Alpine Ski Center for 2022 Olympic Winter Games. The actual performance of the system during the Olympic Winter Games is measured, and the results show that the actual average heating performance coefficient of the system and the heat pump during the Olympic Winter Games is 2.1 to 2.8 and 1.6 to 2.4, respectively, and it is an effective energy saving environmental control system. After analysing the indoor and outdoor thermal environment during the Olympic Winter Games, theoretical model of the system is built, and it is concluded that the theoretical average heating performance coefficient of the system and the heat pump is 4.9 to 5.9 and 3.3 to 4.1, respectively, and the actual system still has room for optimization. To further improve system performance and operation stability, internal frosting of heat recovery device under low temperature conditions needs attention, and the enhanced vapor injection low-temperature air-source heat pump and heat recovery device with higher efficiency should be used.

Keywords: exhaust air heat recovery; air-source heat pump; new ventilation system; Olympic Winter Games; temporary housing; energy consumption; severe cold climate;

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