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US 10,295,238 B2Granted
Cooling system
AssigneeHeatcraft Refrigeration Products LLC
InventorsAugusto J. Pereira Zimmermann, Robert H. Austin, Jr.
Life of this patent
Estimating the term…
Abstract
An apparatus includes a compressor, a load, a heat exchanger, and a heater. The compressor compresses a refrigerant. The load uses the refrigerant to remove heat from a space proximate the load. The load sends the refrigerant to the compressor. The heat exchanger receives the refrigerant from the compressor. The heat exchanger transfers heat from a fluid to the refrigerant. The heat exchanger discharges the refrigerant to the compressor. The heater adds heat to the fluid.
Claims15
An apparatus comprising:
- a compressor configured to compress a refrigerant;
- a load configured to:
- use the refrigerant to remove heat from a space proximate the load;
- and
- send the refrigerant to the compressor;
- a heat exchanger, configured to:
- receive the refrigerant from the compressor;
- transfer heat from a fluid to the refrigerant;
- and
- discharge the refrigerant to the compressor;
- a heater configured to add heat to the fluid;
- a pressure sensor configured to measure a pressure of the refrigerant;
- a temperature sensor configured to measure a temperature of the refrigerant;
- and
- a controller communicatively coupled to the pressure sensor and the temperature sensor, the controller configured to:
- determine a saturation temperature based on the received measured pressure;
- calculate a differential between the measured temperature and the determined saturation temperature;
- compare the calculated differential to a differential set point;
- and
- based on the comparison between the calculated differential and the differential set point, increase a flow of the refrigerant from the compressor to the heat exchanger by opening a valve between the compressor and the heat exchanger.
17 more elements
A method comprising:
- compressing a refrigerant at a compressor;
- removing heat, by a load, from a space using the refrigerant;
- heating a fluid at a heater;
- receiving the fluid from the heater at a heat exchanger;
- receiving the refrigerant from the compressor at the heat exchanger;
- transferring heat from the fluid to the refrigerant at the heat exchanger;
- discharging the refrigerant from the heat exchanger to the compressor;
- discharging the fluid from the heat exchanger to the heater;
- measuring a pressure of the refrigerant;
- determining a saturation temperature based on the measured pressure;
- measuring a temperature of the refrigerant;
- calculating a differential between the measured temperature and the determined saturation temperature;
- comparing the calculated differential to a differential set point;
- and
- based on the comparison between the calculated differential and the differential set point, increasing the flow of the refrigerant from the compressor to the heat exchanger by opening a valve between the compressor and the heat exchanger.
12 more elements
A system comprising:
- a compressor configured to compress a refrigerant;
- a high side heat exchanger configured to:
- receive the refrigerant from the compressor;
- and
- remove heat from the refrigerant;
- a load configured to use the refrigerant to:
- remove heat from a space proximate the load;
- and
- send the refrigerant to the compressor;
- a heat exchanger, configured to:
- receive the refrigerant from the compressor;
- transfer heat from a fluid to the refrigerant;
- and
- discharge the refrigerant to the compressor;
- a heater configured to add heat to the fluid
- a pressure sensor configured to measure a pressure of the refrigerant;
- a temperature sensor configured to measure a temperature of the refrigerant;
- and
- a controller communicatively coupled to the pressure sensor and the temperature sensor, the controller configured to:
- compare the measured pressure to a pressure set point;
- and
- based on the comparison between the measured pressure and the pressure set point, decrease the flow of the refrigerant from the heat exchanger to the compressor by closing a valve between the heat exchanger and the compressor.
19 more elements
Dependencies are inferred from the claim text.