US 12,281,830 B2 · Refrigeration heat reclaim

Abstract

Provided are a refrigeration heat reclaim unit and method, comprising a heat exchanger, comprising a refrigerant inlet that receives a flow of refrigerant having a first state; a refrigerant outlet that outputs the flow of refrigerant having a second state; a water loop inlet that receives a flow of liquid at a first temperature; a water loop outlet that outputs the flow of liquid from the reclaim heat exchanger at a second temperature that is greater than the first temperature in response to the flow of refrigerant. The refrigeration reclaim unit also comprises a refrigerant flow control device having outputs to the refrigerant inlet and an air-cooled condenser, respectively for controlling the flow of refrigerant to at least one of the refrigerant inlet and the air-cooled condenser for maintaining a predetermined flow quality value at the refrigerant outlet.

Claims13

Dependent claims

A system for controlling a flow of refrigerant at a refrigeration system, comprising:

a condenser for exchanging heat;
a heat reclaim unit that recovers at least a portion of heat exchanged at the condenser;
a first sensor that measures a temperature and pressure of a first flow of refrigerant at an inlet of the heat reclaim unit;
a second sensor that measures a temperature and pressure of a second flow of refrigerant at an outlet of the heat reclaim unit;
a controller that compares the measured temperature and pressure at the outlet to a reference pressure-temperature setpoint;
and
a refrigerant flow control device coupled to both the condenser and the heat reclaim unit, and modulated by the controller for outputting proportions of the refrigerant to the condenser and the heat reclaim unit, respectively, until the measured pressure changes to equal a reference pressure of the pressure-temperature setpoint or until the measured temperature changes to equal a reference temperature of the pressure-temperature setpoint.

4 more elements

Dependencies are inferred from the claim text.

Refrigeration heat reclaim

Life of this patent

Refrigeration heat reclaim

Life of this patent

Abstract

Claims13