游泳馆空调系统设计中容易忽略的问题解析

Easily-neglecting problem for air-conditioning system design of natatorium

结合工程实例,指出泳池池水表面空气传热传质为增焓过程,并非等焓过程,室内热负荷计算中应计入池水蒸发潜热,由此泳池冬季室内热湿比为正数。采用定温差(7~8℃)的方式绘制泳池厅空调系统冬季空气处理过程焓-湿图,容易导致送风温度无法满足要求,建议采用室内空气热湿比的方式绘制。针对泳池厅空调系统全年运行情况,提出一种简单可行的新风和冷热水阀控制策略。

Combined with engineering examples,it is confirmed that the air heat and mass transfer on the surface of swimming pool water is an enthalpy increasing process,not an iso-enthalpy process.The latent heat of pool water evaporation should be subtracted in the calculation of indoor heat load,thus the indoor heat and humidity ratio of swimming pool is positive in winter.If the psychrometric chart of air handling process for air-conditioning system of swimming pool hall in winter is draw by the constant temperature difference of 7-8℃,it will not satisfy the requirements of the air supply temperature.It is proposed to draw the psychrometric chart by the indoor air heat and humidity ratio.One simple and feasible control strategy of fresh air and cold-hot water valves is proposed for the whole year operation of the air-conditioning system of swimming pool.