[특허]Retrofittable thermal storage for air conditioning systems

Whirlpool Corporation

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Retrofittable thermal storage for air conditioning systems

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-007/00 F28B-001/00 F25B-039/02 F25B-005/00 F25B-001/10 F25B-005/02 F25B-006/02 F25B-041/04 F24F-003/14
출원번호	US-0800908 (2013-03-13)
등록번호	US-9121641 (2015-09-01)
발명자 / 주소	Wu, Guolian
출원인 / 주소	Whirlpool Corporation
인용정보	피인용 횟수 : 0 인용 특허 : 24

초록
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A system and method to retrofit a building structure having a forced air cooling system with a thermal storage system. The method typically includes the steps of: installing a coolant loop that is free of a compressor, and a condenser, where the coolant loop comprises a refrigerant fluid pump and refrigerant fluid conduits that deliver coolant loop refrigerant fluid to a coolant loop evaporator spaced within a building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the passageway and where the coolant loop is in thermal communication with a thermal energy storage material within a thermal energy thermal storage fluid tank; and activating the coolant loop pump to provide cooling to the coolant loop evaporator thereby cooling air moving in the building air passageway of a building structure.

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1. A retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system comprising: a forced air cooling system comprising:a compressor;a condenser;a thermal expansion device;a forced air evaporator positioned within a building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the passageway; andfluid conduits carrying refrigerant fluid and operably and refrigerant fluidly coupling, the compressor, the condenser, the thermal expansion device, and the evaporator; anda retrofitted thermal storage system comprising:a coolant loop that is free of a compressor and free of a condenser, wherein the coolant loop comprises a refrigerant fluid pump and refrigerant fluid conduits that deliver coolant loop refrigerant fluid to a coolant loop evaporator spaced within the building air cooling passageway that delivers air to at least a portion of the interior volume of the building structure and in thermal communication with air passing through the passageway and wherein the coolant loop is in thermal communication with a thermal energy storage material within a thermal energy thermal storage fluid tank; anda charging vapor compression system comprising:a charging vapor compression system evaporator positioned in thermal communication with the thermal energy storage material; a charging compressor, a charging condenser; and a charging thermal expansion device. 2. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 1, wherein the thermal energy storage material is the coolant loop refrigerant fluid and the coolant loop comprises a coolant loop refrigerant fluid outlet positioned within the thermal energy thermal storage fluid tank which does not include a heat exchanger therein and a coolant loop refrigerant fluid inlet positioned within the thermal energy thermal storage fluid tank. 3. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 1, wherein the coolant loop evaporator operates at a coolant loop evaporator temperature and the forced air cooling system evaporator operates at a forced air evaporator temperature that is different than the coolant loop evaporator temperature. 4. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 1, wherein the charging vapor compression system evaporator is positioned within the thermal energy thermal storage fluid tank. 5. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 1, wherein the coolant loop further comprises a thermal exchange element that is a heat exchanger that allows the coolant loop refrigerant to pass through the heat exchanger. 6. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 1, wherein the coolant loop further comprises a thermal exchange element that is the coolant loop refrigerant fluid of the coolant loop. 7. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 1, wherein the coolant loop evaporator and the forced air evaporator are positioned proximate to one another and spaced within the same forced air passageway. 8. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 7 further comprising a control unit configured to receive input from a user regarding a desired relative humidity by a user and a desired temperature for at least a portion of an interior volume of a building structure and wherein the control unit is in signal communication with at least the compressor of the forced air system, the coolant loop pump, and the charging compressor. 9. The retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system of claim 6, wherein the coolant loop refrigerant fluid of the coolant loop that is also the thermal energy storage material is a material chosen from the group consisting of: a glycol and brine solution, ethylene glycol, polypropylene glycol, glycerin, and mixtures thereof. 10. A retrofittable thermal storage system configured to be used in connection with a building structure forced air cooling system comprising: a forced air cooling system comprising: a compressor; a condenser; a thermal expansion device; a forced air evaporator positioned within a building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the air passageway; and fluid conduits carrying refrigerant fluid and operably and refrigerant fluidly coupling, the compressor, the condenser, the thermal expansion device, and the evaporator; and a retrofitted thermal storage system comprising: a coolant loop that is free of a compressor, a condenser, and a thermal exchange element wherein the coolant loop comprises a refrigerant fluid pump and refrigerant fluid conduits that deliver coolant loop refrigerant fluid to a coolant loop evaporator spaced within the building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the passageway and wherein the coolant loop is in thermal communication with a thermal energy storage material within a thermal energy thermal storage fluid tank; and a charging vapor compression system comprising: a charging vapor compression system evaporator positioned in thermal communication with the thermal energy storage material; a charging compressor, a charging condenser; and a charging thermal expansion device each in fluid communication and configured to provide cooling to the thermal energy storage material. 11. The retrofittable thermal storage system of claim 10, wherein the thermal energy storage material is also the coolant loop refrigerant fluid. 12. The retrofittable thermal storage system of claim 11, wherein the coolant loop evaporator and the forced air evaporator are positioned proximate to one another and spaced within the same forced air passageway. 13. The retrofittable thermal storage system of claim 10, wherein the coolant loop evaporator and the forced air evaporator are positioned proximate to one another and spaced within the same forced air passageway. 14. The retrofittable thermal storage system of claim 10, wherein the thermal energy storage material is the coolant loop refrigerant fluid and the coolant loop comprises a coolant loop refrigerant fluid outlet positioned within the thermal energy storage fluid tank and a coolant loop refrigerant fluid inlet positioned within the thermal energy storage fluid tank and wherein the coolant loop refrigerant fluid outlet and the coolant loop refrigerant inlet are spaced apart from one another but in fluid communication with one another within the thermal energy storage fluid tank. 15. The retrofittable thermal storage system of claim 10 further comprising a control unit configured to receive input from a user regarding a desired relative humidity by a user and a desired temperature for at least a portion of an interior volume of a building structure and wherein the control unit is in signal communication with at least the compressor of the forced air system, the coolant loop pump, and the charging compressor and wherein the loop evaporator is configured to operate during a first time period and the forced air evaporator is configured to operate during a second time period and wherein at least a portion of the first time period does not overlap the second time period. 16. A method to retrofit a building structure having a forced air cooling system with a thermal storage system comprising the steps of: installing a coolant loop that is free of a compressor, and a condenser, wherein the coolant loop comprises a refrigerant fluid pump and refrigerant fluid conduits that deliver coolant loop refrigerant fluid to a coolant loop evaporator spaced within a building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the passageway and wherein the coolant loop is in thermal communication with a thermal energy storage material within a thermal energy thermal storage fluid tank; and activating the coolant loop pump to provide cooling to the coolant loop evaporator thereby cooling air moving in the building air passageway of a building structure to provide cooling to at least a portion of an interior volume of a building structure; and a charging vapor compression system comprising: a charging vapor compression system evaporator positioned in thermal communication with the thermal energy storage material; a charging compressor, a charging condenser; and a charging thermal expansion device each in fluid communication and configured to provide cooling to the thermal energy storage material. 17. The method of claim 16, wherein the forced air cooling system comprises: a compressor;a condenser;a thermal expansion device;a forced air evaporator positioned within a building air cooling passageway that delivers air to at least a portion of the interior volume of the a building structure and in thermal communication with air passing through the passageway and;fluid conduits carrying refrigerant fluid and operably and refrigerant fluidly coupling, the compressor, the condenser, the thermal expansion device, and the evaporator; and the method further comprises the step of controlling the operation of both the forced air cooling system and the coolant loop using a control unit in communication and operably connected with the forced air cooling system and the coolant loop.

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