| 摘要 |
<p>The purpose of the method is to maintain, in a compressed gas dryer, working through the condensation of the moisture contained in the air and with any thermal load demand placed on the dryer, a type of operation that keeps the temperature of the evaporator, near the outflow of the compressed air, in range between a value sufficiently high to avoid the risk of freezing the moisture contained in the compressed air and a value sufficiently low to avoid compromising the effect of moisture condensation that is generated by the decreased temperature. This temperature differential must respect a minimum range between successive starts of the compressor. This objective is achieved with a compressor by-pass conduit on which is mounted a selectively controllable adjusting valve. The operation is based on the steps of: measurement of the evaporation temperature (Tev), and verification that this temperature is higher than a preset value (Set_Tev); starting the compressor; opening said valve for a preset time, and then closing it; verification that the evaporation temperature is higher than a preset value; if the time elapsed is longer than a predetermined time, then said valve is opened.</p> |
