Patent ID: 8893981
Filing Date: 2014-11-25
Classification: F24D

Abstract:
1. A heating system comprising a plurality of local heat exchange systems for providing hot water to respective locations located remotely from a heater, individual ones of the local heat exchange systems comprising: a cold water inlet for receiving cold water from a water supply; a hot water outlet for providing hot water to a tap; a heat exchange fluid inlet for receiving a warmed heat exchange fluid from the heater; a heat exchange fluid outlet for returning heat exchange fluid to the heater; a primary heat exchanger having a primary heat exchanger first fluid inlet in fluid flow communication with a primary heat exchanger first fluid outlet, and a primary heat exchanger second fluid inlet in fluid flow communication with a primary heat exchanger second fluid outlet; a heat store having a heat store fluid inlet, a heat store fluid outlet and a secondary heat exchanger, the secondary heat exchanger having a secondary heat exchanger inlet and a secondary heat exchanger outlet, where the secondary heat exchanger inlet is arranged to receive water from the cold water inlet; wherein the primary heat exchanger first fluid inlet and the heat store fluid inlet are in fluid flow communication with the heat exchange fluid inlet, and a first valve has a first inlet connected to the cold water inlet, a second inlet connected to the secondary heat exchanger outlet, and the first valve is arranged to mix water from the cold water inlet with water passing through the secondary heat exchanger, and an outlet of the first valve is connected to the primary heat exchanger second fluid inlet and the primary heat exchanger second fluid outlet is connected to the hot water outlet; and wherein the first outlet of the primary heat exchanger and the outlet of the heat store are connected to the heat exchange fluid outlet.