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1981年9月,瑞典能源展览会在北京展览馆展出。瑞典菲达(F1akt)通风空调设备公司展出了该公司在通风、空调节能方面的技术发展情况并进行了技术座谈。一、排风热回收的概况对于通风空调系统来说,采用再循环空气当然是最好的节能方式。但是,由于卫生要求,往往需要部分或全部排除室内空气,补充室外新风。若能回收排风中的热能,用以预热新风,就能大大减少新风耗热。以采用转轮式全热交换器为例,其效果见表1。
In September 1981, the Swedish Energy Exhibition was exhibited at the Beijing Exhibition Hall. The F1akt ventilation and air conditioning equipment company in Sweden exhibited the company’s technological developments in ventilation and air-conditioning energy saving and conducted technical discussions. First, the outline of exhaust heat recovery For ventilation and air conditioning systems, the use of recycled air is of course the best way to save energy. However, due to hygiene requirements, it is often necessary to eliminate some or all of the indoor air and supplement the outdoor fresh air. If the heat energy in the exhaust air can be recovered to warm up the fresh air, the heat consumption of the fresh air can be greatly reduced. Take the runner-type total heat exchanger as an example. The effect is shown in Table 1.