F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
62/54
F25B 15/02 (2006.01) F04B 9/107 (2006.01) F04B 9/127 (2006.01)
Patent
CA 1275575
ABSTRACT An absorption heat. pump system comprises an absorber, a generator. a condenser, an evaporator, and a pump assembly for pumping liquid (absorbent with absorbed refrigerant) from the absorber to the generator. The pump is driven by fluid from the generator which is then passed to the absorber and which comprises the liquid (absorbent depleted of refrigerant) which is conventionally returned to the absorber and. under certain circumstances. vapour from the generator to balance the flow of liquid between the absorber and the generator. The driving chamber of the pump assembly is separated into two parts. the lower part is connected to the liquid space of the gen- erator for receiving liquid therefrom via solenoid valve means, and the upper part is connectable either to the liquid space of the generator or to the vapour space of the generator via solenoid valve means both chamber parts being exhausted to the absorber via solenoid means. The solenoid valve means are controlled by a controller which is connected to a liquid level sensor sensing the level of fluid in the generator or the absorbers to alternate the supply of liquid and vapour to the second chamber part in dependence on the level of liquid in the generator or absorber.
518255
British Gas Plc
Sim & Mcburney
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