Plant for tempering of a building

Heat exchange – With timer – programmer – time delay – or condition responsive... – Having heating and cooling capability

Reexamination Certificate

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Details

C165S045000

Reexamination Certificate

active

10502664

ABSTRACT:
A plant for tempering a building, including an energy storage unit formed by ground heat exchangers coupled in parallel and each including a heat insulated leg and a non-insulated leg in thermal contact with surrounding soil. The heat exchangers are included in a circulating circuit for a circulation fluid which includes a circulation pump and room temperature keeping devices. The energy storage unit has a continuously varying temperature in a depth direction from a cold end to a warm end. The flow direction in the ground heat exchangers is controlled by a reversing valve such that for a warm keeping function, circulation fluid is received from the warm end and for a cool keeping function, circulation fluid is received from the cold end. The circulation pump is controlled such that the circulation flow brings about a temperature difference between the inlet and outlet of the ground heat exchangers that is constant with a value that can be calculated with the aid of the properties of the ground and the actual components.

REFERENCES:
patent: 4735257 (1988-04-01), Platell
patent: 5014770 (1991-05-01), Palmer
patent: 5209286 (1993-05-01), Schmidt
patent: 5392611 (1995-02-01), Assaf et al.
patent: 5438846 (1995-08-01), Datta
patent: 5671608 (1997-09-01), Wiggs et al.
patent: 0 006 643 (1980-01-01), None
patent: 0 047 223 (1982-03-01), None
patent: 0 102 987 (1986-01-01), None
patent: 408 087 (1979-05-01), None
patent: 450 289 (1987-06-01), None
patent: 458 061 (1989-02-01), None
patent: 460 731 (1989-11-01), None
patent: WO 00/36343 (2000-06-01), None

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