Refrigeration – Automatic control – Of external fluid reheating
Patent
1994-08-15
1996-02-27
Wayner, William E.
Refrigeration
Automatic control
Of external fluid reheating
62 90, F25D 1706
Patent
active
054938716
ABSTRACT:
A method and apparatus for improved latent heat extraction combines a run-around coil system with a condenser heat recovery system to enhance the moisture removing capability of a conventional vapor compression air conditioning unit. The run-around coil system exchanges energy between the return and supply air flows of the air conditioning unit. Energy recovered in the condenser heat recovery system is selectively combined with the run-around system energy extracted from the return air flow to reheat the supply air stream for downstream humidity control. A control system regulates the relative proportions of the extracted return air flow energy and recovered heat energy delivered to the reheat coil for efficient control over moisture in the supply air flow. Auxiliary energy in the form of electric heat energy is further added to the recovered heat energy for additional reheat use. In water cooled condenser unit systems, the cooling medium is shared and selectively exchanged between the air conditioning system and the run-around coil system. In another mode, a chiller/heater interfaces a chilled water circulating loop with a hot water circulating loop including a run-around coil system.
REFERENCES:
patent: 1837798 (1993-12-01), Shipley
patent: 2200118 (1940-05-01), Miller
patent: 2438120 (1948-03-01), Freygang
patent: 2715320 (1955-08-01), Wright
patent: 4271678 (1981-06-01), Liebert
patent: 4658594 (1987-04-01), Langford
patent: 5193352 (1993-03-01), Smith et al.
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