摘要
分析了目前空调系统面临的主要问题 ,提出了基于溶液除湿空气处理方式的解决方案。介绍了溶液除湿空气处理方式的原理和系统构成方式 ,从改善室内空气质量、改进空调末端装置方式、节省能源、改善城市能源结构等方面讨论了这一方式的优点和特点。分析表明 ,基于溶液除湿空气处理方式的湿度独立控制空调系统可有效消除空气的霉菌、粉尘 ,可以根据人员数量调节新风量 ,并通过独立的吸收或提供显热的末端装置调节温度 ,实现室内温湿度的分别控制。溶液除湿空气处理方式还可有效地对排风进行全热回收 ,并在过渡季利用干燥或低温的新风 ,从而降低空气处理能耗。由于冷水不承担除湿任务 ,因此只需要 1 8～ 2 1℃冷水用于吸收除湿过程释放的热量和室内显热。这就有可能利用各种自然冷源或采用高COP的冷水机组。溶液除湿方式还可实现高密度的能量蓄存 。
Through a critique of currently used air-conditioning systems, presents a new air-conditioning system based on the humidity independent control i.e. liquid desiccant air handling. Describes the basic principle and the configuration of the liquid desiccant air handling system in detail. Discusses its advantages and features such as the improvement on IAQ, the reform on indoor terminals, the energy saving as well as the benefit on urban energy structure. Concludes that the liquid desiccant system can reduce the mold and dust from the air effectively, and is able to regulate the amount of supplied outdoor air according to the number of occupant. Humidity and temperature can be controlled individually through different terminals by different means. Heat recovery from the exhausted air in winter and summer and the utilization of dried or cooler outdoor air during transition seasons can also be realized through the system. This results in significant energy saving. Due to dehumidification by the desiccant, chilled water is not necessary for drying the air. Therefore only water in 18 to 21 ℃ is needed to absorb heat during the dehumidification process and the sensible heat from indoor. Either cool sources from natural environment or a high performance chiller with COP about 10 can provide this cooling capacity efficiently. The desiccant liquid is also a good energy storage medium with high density energy storage feature. BCHP (building combined heat and power co-generation) can then be benefit from it to balance between various types of load demands.
出处
《暖通空调》
北大核心
2004年第11期88-97,共10页
Heating Ventilating & Air Conditioning
