Low-grade heat recovering gas adsorption plant for large-scale refrigerators

A low-grade heat recovery system for large-scale refrigerators is proposed. The system comprises an evaporation refrigeration cycle with an inert carrier gas and a thermal adsorption-desorption cycle for adsorption drying of a gas flow. The known low-grade heat recovery systems using adsorption heat pumps with closed vapor-phase cycles for refrigeration are inefficient because of the rather low partial vapor pressure of the working medium. Moreover, such systems are highly sensitive to an unsorbable component, which is inevitably accumulated in the vapor phase. The system proposed is free of these drawbacks, since the unsorbable component is used as a working-medium vapor carrier, thus enhancing the mass-transfer processes.