US 12,123,630 B2
Storage source and cascade heat pump systems
Mark Mitchell MacCracken, Miami Beach, FL (US); and Susanna Staubly Hanson, La Crosse, WI (US)
Assigned to TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed by TRANE INTERNATIONAL INC., Davidson, NC (US)
Filed on Jun. 17, 2023, as Appl. No. 18/336,976.
Application 18/336,976 is a division of application No. 17/138,156, filed on Dec. 30, 2020, granted, now 11,680,733.
Prior Publication US 2023/0332807 A1, Oct. 19, 2023
Int. Cl. F25B 13/00 (2006.01); F24D 11/02 (2006.01); F24D 17/02 (2006.01); F24F 5/00 (2006.01); F25D 16/00 (2006.01); F28D 20/00 (2006.01)
CPC F25B 13/00 (2013.01) [F24D 11/0221 (2013.01); F24D 17/02 (2013.01); F24F 5/0046 (2013.01); F25D 16/00 (2013.01); F24D 2200/14 (2013.01); F24F 2005/0025 (2013.01); F25B 2400/24 (2013.01); F28D 2020/0078 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of adjusting air temperatures in a conditioned space, comprising:
operating a heating, ventilation, air conditioning, and refrigeration (HVACR) system in one of a heating mode, a heating and cooling mode, or an energy storage mode, or an energy rejection mode, wherein:
operating in the heating mode comprises:
operating a thermal system to absorb energy from a storage circuit process fluid of a storage fluid circuit and provide energy to a heating process fluid of a heating circuit, the storage fluid circuit including one or more thermal storage tanks each containing a thermal storage material; and
rejecting energy to the conditioned space at one or more heating coils of the heating circuit, operating in the heating and cooling mode comprises:
operating the thermal system to absorb energy from the storage circuit process fluid and provide energy to the heating process fluid;
rejecting energy at the one or more heating coils of the heating circuit, exchanging heat between the storage circuit process fluid and a cooling process fluid of a cooling circuit; and
absorbing energy at one or more cooling coils of the cooling circuit,
operating in the energy storage mode comprises exchanging heat between the storage circuit process fluid and the cooling process fluid, wherein the cooling process fluid absorbs energy from the conditioned space at the one or more cooling coils and rejects heat to the thermal storage material at the one or more storage tanks, and
operating a heat pump to absorb energy from a source, and providing the energy absorbed from the source to the one or more thermal storage tanks, and
operating in the energy rejection mode comprises operating the thermal system to absorb energy from the storage circuit process fluid and reject energy to the heating process fluid, rejecting energy from the heating process fluid to an ambient environment, and the storage circuit process fluid absorbing heat from the thermal storage material at the one or more thermal storage tanks.