초록 ▼

A multi-mode off-peak storage heat pump system for a building which includes a unidirectional flow refrigerant circuit and a brine circuit in selective heat exchange relation with one another, each being connected to a dual coil in ducts wherein air can be circulated within and between the inside an

A multi-mode off-peak storage heat pump system for a building which includes a unidirectional flow refrigerant circuit and a brine circuit in selective heat exchange relation with one another, each being connected to a dual coil in ducts wherein air can be circulated within and between the inside and outside of the building, and an ice bank in the brine circuit for coolness and low-level heat storage, the system providing heating and cooling with no refrigerant reversing valves or coil defrost means and with optimum off-peak power utilization.

대표청구항 ▼

A multi-mode off-peak storage heat pump system for a building comprising (a) ducts for conveying air within and between the inside and outside of the building; (b) a single selectively operable blower in said ducts for circulating air therethrough; (c) damper means in said ducts having selective set

A multi-mode off-peak storage heat pump system for a building comprising (a) ducts for conveying air within and between the inside and outside of the building; (b) a single selectively operable blower in said ducts for circulating air therethrough; (c) damper means in said ducts having selective settings for directing the air within and between the inside and outside of the building; (d) selectively operable dual coil means in said ducts having refrigerant condensing and brine air-cooling loops; (e) a selectively operable unidirectional refrigerant circuit comprising (i) a compressor for directing gaseous refrigerant to the refrigerant loop to be air-cooled and condensed, (ii) a heat exchanger-evaporator in which the condensed refrigerant from the refrigerant loop is evaporated to gas; and (f) a selectively operable brine circuit comprising (i) a coolness and low level heat storage container through which brine is circulatable in heat exchange relation with a phase-change material, (ii) a selectively operable electric heater for warming the brine entering the storage container to melt the phase-change material, and (iii) pump means for directing the brine leaving the storage container through one of a first subcircuit to the heat exchanger-evaporator for chilling of the brine to below the freezing temperature of the phase-change material and a second subcircuit to the coil means brine loop for cooling of air; (g) whereby said system is operable in various alternative modes including operating the refrigerant and brine circuits and first brine subcircuit with an outside-to-outside damper setting to freeze the phase-change material with chilled brine and with an inside-to-inside damper setting to additionally heat inside air, and operating only the brine circuit and its second subcircuit with an inside-to-inside damper setting to cool inside air and with an outside-to-outside damper setting to melt the phase-change material by outside air heat and with no air circulation to melt the phase-change material by electric heat during offpeak loads, and operating neither circuit with an outside-to-inside damper setting to cool inside air and with an inside-to-outside damper setting to exhaust inside air.