Dedicated heat recovery chiller

Abstract

A heating and/or cooling system which incorporates one or more modular dedicated heat recovery refrigeration units each of which includes at least one compressor, an evaporator and a condenser. The system captures and utilizes condenser circuit heat which would otherwise be wasted. A variable speed circulating water pump circulates water through each evaporator/condenser, which are connected in parallel across the respective supply line and return line. A master controller activates and deactivates individual compressors in accordance with load demand. Shut-off valves close off the water flow through the respective evaporator and/or condenser of any units deactivated and the resulting changes in the pressure differential in the supply and return lines is sensed by sensor which sends a signal to the pump motor speed controller which changes the output of the pump to restore a predetermined pressure differential.

1 . A dedicated heat recovery chiller, comprising:
 a modular dedicated heat recovery chiller,   a sensor,   a dedicated heat recovery chiller evaporator waste heat line exiting the dedicated heat recovery chiller,   a dedicated heat recovery chiller condenser coolant line entering the dedicated heat recovery chiller,   a dedicated heat recovery chiller chilled water line,   a dedicated heat recovery chiller return water line,   a connection on the dedicated heat recovery chiller condenser line for exchanging heat from a main heating unit return water line,   a connection on the dedicated heat recovery chiller evaporator line for exchanging heat with a main heating unit return water line,   a connection on the dedicated heat recovery chiller chilled water line for exchanging heat with a return water line to a main chiller unit,   a connection on the dedicated heat recovery chiller return water line for exchanging heat with a return water line to a main chiller unit,   wherein the dedicated heat recovery chiller supplies heat to the return water line to preheat return water to the main heating unit,   the sensor sensing the return water line to the main heating unit and the dedicated heat recovery chiller condenser coolant line entering the dedicated heat recovery chiller.