摘要
目前中心化验室大量采用全新风空调系统,但绝大多数全新风空调系统只控制了室内温度,没有控制湿度,造成分析化验仪器损坏;即使考虑了控制湿度,也由于没有考虑系统的运行能耗,普遍采用电加热器再热,造成运行成本太高。空调冷源应优先采用余热制冷,也就是采用溴化锂吸收式制冷,再热也应优先采用工厂余热。当没有余热时,再热优先应采用空调机的冷能热或采用热泵制热,提高加热效率。由于不同房间的新风送风参数相同但送风量不同,不可能光靠新风满足所有房间的温度和湿度,各个房间需要设置末端加热或冷却装置对室内空气参数进行微调。确定新风机组的送风参数和末端加热或冷却装置时应尽量避免冷热互相抵消,造成能源浪费。
Most of the central laboratories have been installed with new air conditioning system. But a large number of new air conditioning systems are operated to control the room temperature and not the room hu- midity, which results in damages of laboratory equipment. Although the humidity control has been considered in some laboratories, the energy consumption has not been considered and electric heater is generally used for reheating. The operating cost is very high. The waste heat should be first used for refrigeration in air condi- tioning and lithium bromide absorption refrigeration should be applied. In addition, the plant waste heat should also be utilized for reheating. When the waste heat is not available, the heat from refrigeration of air conditioning or heat from heat pump should be utilized for reheating to improve heating efficiency. As parame- ters of fresh air sent to different rooms are same and the flowrates are different, the control of room temperature and humidity can not fully rely on the fresh air. The end heating or cooling units shall be installed to micro ad- just the fresh air parameters. Counteract of heating and cooling must be avoided in design of fresh air parame- ters and end heat and cooling units to minimize energy consumption.
出处
《炼油技术与工程》
CAS
2013年第1期62-64,共3页
Petroleum Refinery Engineering
关键词
全新风
空调
新风机组
冷却
再热
节能
中心化验室
humidity control, fresh air, air conditioning, fresh air handling unit, cooling, reheating, energy saving, central laboratory
