Heat recovery
AssigneeWaste Heat Recovery Ltd.
InventorColin Thomas Thomson
Life of this patent
Estimating the term…
Abstract
A heat recovery system arranged to heat water includes at least one heat exchanger (9) arranged to heat water by heat exchange with waste heat. A storage reservoir (11) is arranged to store water heated by the heat exchanger (9). The heat exchanger (9) is switchable between a first mode of operation in which water is circulated by a pump (12) in a circuit that includes the storage reservoir (11) and the heat exchanger (9), and a second mode of operation in which water is circulated by the pump (12) in a circuit that by-passes the heat exchanger (9). Heated water of at least a desired minimum temperature can be supplied to at least one outlet during both the first and second modes of operation.
Claims16
A heat recovery system arranged to heat water wherein the system comprises one or more heat exchangers arranged to heat water by heat exchange with waste heat, a storage reservoir arranged to store water so heated by the heat exchanger(s), at least one hot water outlet and a pump, wherein the flow of water through the one or more heat exchanger(s) is switched according to the water level in the storage reservoir between a first mode of operation in which a flow of heated water is circulated by the pump in a circuit that includes the storage reservoir and the heat exchanger(s), and a second mode of operation in which incoming cold water is admitted to the system while the heated water from the storage reservoir is circulated by the pump in a second circuit that includes a by-pass valve arranged to by-pass the heat exchanger(s), wherein heated water of at least a desired minimum temperature can be supplied to the at least one outlet during both the first and second modes of operation and wherein the heat exchanger(s) is/are connected to the incoming supply of water during the second mode of operation and wherein a flow of fill water from the heat exchanger(s) to the storage reservoir is controlled by a temperature control valve in the second mode of operation.
A heat recovery system arranged to heat water wherein the system comprises one or more heat exchangers arranged to heat water by heat exchange with waste heat, a storage reservoir arranged to store water so heated by the one or more heat exchangers, at least one hot water outlet and a pump, wherein the one or more heat exchangers is/are switched between a first mode of operation in which a flow of water is circulated by the pump in a circuit that includes the storage reservoir and the one or more heat exchangers, and a second mode of operation in which the flow of water is circulated by the pump in a second circuit that includes the storage reservoir and the one or more heat exchangers and a by-pass valve arranged to by-pass the one or more heat exchangers, wherein heated water of at least a desired minimum temperature can be supplied to the at least one outlet during both the first and second modes of operation, and wherein the one or more heat exchangers are connected to an incoming supply of water during the second mode of operation and wherein a flow of water from the heat exchanger(s) to the storage reservoir is controlled by a temperature control valve in the second mode of operation, the one or more heat exchangers being switched between the first and second modes of operation according to the water level in the storage reservoir.
Dependencies are inferred from the claim text.