US 12,281,830 B2
Refrigeration heat reclaim
James Patrick McClendon, Rogers, AR (US)
Assigned to Walmart Apollo, LLC, Bentonville, AR (US)
Filed by Walmart Apollo, LLC, Bentonville, AR (US)
Filed on May 16, 2024, as Appl. No. 18/666,150.
Application 18/666,150 is a division of application No. 17/007,304, filed on Aug. 31, 2020, granted, now 12,025,357.
Application 17/007,304 is a continuation of application No. 15/044,772, filed on Feb. 16, 2016, granted, now 10,788,248, issued on Sep. 29, 2020.
Claims priority of provisional application 62/120,020, filed on Feb. 24, 2015.
Prior Publication US 2024/0302089 A1, Sep. 12, 2024
Int. Cl. F25B 49/02 (2006.01); F25B 6/02 (2006.01); F25B 45/00 (2006.01)
CPC F25B 49/027 (2013.01) [F25B 6/02 (2013.01); F25B 45/00 (2013.01); F25B 2700/133 (2013.01); F25B 2700/19 (2013.01); F25B 2700/21 (2013.01)] 13 Claims
OG exemplary drawing
 
1. 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.