Refrigerated Dryers watch dewpoint to save energy.

Press Release Summary:



EMD Plus Series avoids dew point fluctuations, thus providing dry, compressed air at lower energy cost. Controller signals compressor to stop when there is drop in compressed air temperature due to low flow conditions. Under such conditions, system retains ability to respond immediately to load increases. Models are available for flows of 40 through 25,000 scfm. All have digital dew-point readout and electric drain with panel-mounted controls.



Original Press Release:


EMD Plus Cycling Refrigerated Dryers


Lake City. PA - New literature on EMD Plus Series energy management dryers from Van Air Systems. a division of Van Air, Inc., outlines how users can realize true energy savings while avoiding the dew point fluctuations common in other cycling dryer types.

An explanation of system operation illustrates how the EMD Plus controller signals the compressor to stop when there is a drop in compressed air temperature due to low flow conditions. Even under such conditions, the system retains the ability to respond immediately to load increases without sacrificing dew point performance. Actual dew point temperature measurement from the evaporator outlet air stream to a microprocessor ensures consistent performance without the inevitable dew point spikes common to thermal mass systems. Elimination of the thermal mass means one less thermal barrier in the cooling process, thus increasing efficiency and response to fluctuating operating conditions.

A full range of models is listed, including digital dew point readout and an electric drain with panel-mounted controls, for models covering flows of 40 through 25,000 scfm. Simple indoor installation and minimal maintenance make the EMD Plus Series ideal for numerous manufacturing applications requiring dry compressed air at the lowest energy cost.

More from Electrical Equipment & Systems

All Topics