四种温度控制方法对相对湿度影响的比较
Comparison of four different temperature control strategies influencing indoor air relative humidity
摘要：
模拟比较了定风量变水量、变风量变水量、旁通型变风量、二次回风控制四种方法在部分负荷时的除湿能力。结果表明，定风量变水量控制在部分负荷时，室内相对湿度一直较高，除湿能力很差；旁通型变风量控制除湿能力较强；变风量变水量控制在潜热不变显热变化的情况下除湿能力较差，而在潜热显热都变化的情况下较好；二次回风控制只在实际显热比较小时除湿能力较差。
Abstract：
Compares the part-load dehumidification performances of four temperature control strategies, namely, constant air rate and variable chilled water flow control, variable air rate and chilled water flow control, by-pass variable air rate control, and secondary return air control. Simulation results show that the first method is rather poor in dehumidification capacity under part-load condition, and the indoor relative humidity is always over high, the third method has higher dehumidification capacity, the second method has poorer dehumidification capacity under the condition of constant latent heat with variable sensible heat and higher dehumidification capacity under the condition of variable latent and sensible heat, the fourth method has poorer dehumidification capacity only under lower sensible heat ratio.
Keywords:relative humidity, temperature, control strategy