Refrigeration – Processes – Fluid external of refrigeration producing cycle
Patent
1982-01-18
1983-11-08
King, Lloyd L.
Refrigeration
Processes
Fluid external of refrigeration producing cycle
62118, 62159, 62325, 62 99, 165 22, F25D 1702
Patent
active
044134789
ABSTRACT:
An air conditioning system and method wherein a central pumping system circulates a heat-exchange liquid (which is water or a glycol solution or other solution called "water") through heating and cooling paths of a refrigeration system and then to and from air-treating units. The fans or blowers of the air-treating units are positioned upstream of the air cooling and heating coils so that the fan heat and pump heat are discharged through the fluid cooler system during cooling load operation, and all of that heat is available for delivery to the air treating units during heating-load operation. The quantity of outside (fresh) air is selected and controlled so that adequate ventilation is provided, and during cold weather so that multi-story buildings may be provided with adequate pressurization to overcome an objectionable inflow of cold air at ground floor levels at entrances and exits. In the embodiments shown, such additional air is discharged through the fluid cooler to carry away heat during cooling load operation. One embodiment includes a separate line for neutral water to each air treating unit. The neutral water is mixed with either the hot or the cold water supplied to each air-treating unit for temperature control as distinguished from the standard three-pipe system wherein hot and cold water are mixed to provide temperature control. Another embodiment is a four pipe system having separate supply and return lines for both hot water and cold water.
REFERENCES:
patent: 3738899 (1973-06-01), McFarlan
patent: 4010624 (1977-03-01), McFarlan
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