Zhileng xuebao (Jan 2011)
Experiments Study on Movements Characteristics of Three-way Modulating Control Valve of the Parallel Condensers Dehumidifier
Abstract
With the rapid growth of underground projects, the temperature control dehumidifier with parallel condensers has been widely used for its energy saving and high efficiency. The influence of the 3-way modulating control valve in temperature control dehumidifier with parallel condensers on unit cooling, dehumidifying and supply air temperature was studied, The result shows that: (1) the continuous temperature adjustment could be achieved by adjusting the opening degree of the three-way valve. The effective region of the three-way valve was between 30% and 80%; (2) the opening degree of the three-way valve has influence on the dehumidification of the unit; when the open degree is between 50% and 65%, the unit has the lowest value in input power and highest value in dehumidification; (3) the refrigerant’s flow rate could be modulated by modulating the opening degree of the 3-way valve, and the highest flow appeared when the opening degree is between 50% and 70%. The ways of adjustment are very useful for improving the efficiency of temperature control dehumidifier with parallel condensers.
