Patent ID: 9669352
Date: 2017-06-06
CPC Classifications: B01D,F24F,F25B

Claim:
1. A dryer for removing moisture from a gas, the dryer comprising: a first fluid circuit in which the gas is conveyed, the first fluid circuit comprising a gas compressor structured to provide a compression to the gas, the first fluid circuit also including a gas heat transfer portion configured in fluid communication with a condensate separator; a second fluid circuit through which a refrigerant is circulated, the second fluid circuit comprising a refrigerant compressor, a condenser, and a refrigerant heat transfer portion adjacent to and in thermal communication with the gas heat transfer section, a first heat exchanger defining fluid pathways and including the gas heat transfer portion and the refrigerant heat transfer portion, the first heat exchanger also having a storage thermal capacitance defined by plates in thermal communication with the gas heat transfer portion and the refrigerant heat transfer portion, wherein the plates have sufficient mass for the storage thermal capacitance to enable heat transfer for a predetermined duration from the gas heat transfer portion to provide condensation of fluid from the first fluid circuit when the second fluid circuit is not operating; and a controller in communication with the first heat exchanger and structured to operate upon a change in a temperature of the first heat exchanger, wherein the controller is configured to activate and deactivate the refrigerant compressor depending on the temperature of the first heat exchanger relative to low and high temperature limits.