干工况风机盘管机组性能实验研究
Experimental study on a fan-coil unit running in dry conditions
摘要：
采用焓差法对某风机盘管机组在供水温度为14～18 ℃、供回水温差为3 ℃的条件下进行了实验，研究了露点温度附近干、湿工况分界区域的性能。实验结果表明，被测机组的供冷量随供水温度升高而迅速下降，随送风量减少而下降。干工况风机盘管机组的最佳供水温度为17 ℃，宜采用高挡风量运行。风机盘管干工况运行供冷量比标准工况下降2/3。
Abstract：
With the air enthalpy difference method, tests a fan-coil unit running in the conditions where the supply water temperature is 14 to 18 ℃, the temperature difference is 3 ℃, and studies the critical point from dry to wet conditions. The results show that cooling capacity of the unit drops dramatically as the supply water temperature rises, and also drops as the supply air rate decreases. For the fan-coil unit running in dry condition, the most suitable supply water temperature is 17 ℃, and it is better to run at high speed condition for the supply air rate. The cooling capacity of the fan-coil unit running in dry condition drops 2/3 than in the standard condition.
Keywords:fan-coil unit, dry condition, supply water temperature, supply air rate, cooling capacity