Multi-mode air conditioning unit with energy storage system

Details Multi-mode air conditioning unit with energy storage system Multi-mode air conditioning unit with energy storage system

1992-03-18

1993-10-26

Tapolcai, William E.

Refrigeration

Processes

Accumulating holdover ice in situ

62118, F25D 300

Patent

active

052555267

ABSTRACT:
A method and air conditioning unit for storing energy and for utilizing stored energy is provided. The air conditioning unit includes a storage tank containing a phase change material, such as water. A plurality of coils are disposed in the storage tank and carry refrigerant. At least one indoor heat exchanger is connected to the coils. An electrical operated refrigerant pump is connected to the coils and is used to pump liquid refrigerant to the indoor heat exchanger when required. A conventional condensing unit is connected to the indoor heat exchanger to provide cooling during normal hours. During peak energy periods, cooling is supplied from ice storage using the refrigerant pump. During low demand or off peak periods the condensing unit operates to freeze ice thereby storing energy in the storage tank.

REFERENCES:
patent: 2185515 (1940-01-01), Neeson
patent: 4735064 (1988-04-01), Fischer
patent: 4831830 (1989-05-01), Swenson
patent: 4916916 (1990-04-01), Fischer

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