Heating plant equipped with an absorption heat pump.

摘要

1. Installation for heating a fluid such as for example water, particularly for the heating of buildings and for producing hot water for domestic purposes and of the type comprising at least one burner for solid, liquid and/or gaseous fuel and producing in a combustion chamber (11) smoke at a relatively high temperature which is then discharged ; an absorption-type heat pump circuit in which the absorption solution and the refrigerant circulate and comprising in series a condenser (2), an evaporator (4), an absorber (5), known per se, and a first heat exchanger (12) forming a first stage and constituting the boiler of the heat pump located on the smoke evacuation circuit and intended to be encountered by the smoke produced in the combustion chamber (11) in order to bring firstly the absorption solution to a high temperature, and a circuit for heating the said fluid comprising likewise in series not only the said absorber (5) and condenser (2) but a second heat exchanger (8) forming a recuperator and likewise located on the smoke discharge circuit, the said installation being characterised in that : - the said second heat exchanger (8) forms the second and last stage encountered by the smoke on its evacuation circuit (25) to heat the fluid upon its entry into the heating circuit, - the said first heat exchanger (12) is connected towards the smoke inlet end to a separator flask (18) communicating with the space in the boiler (15) in which the said absorption solution is heated at the level of the said heat exchanger (12) and in that it comprises : - a branching circuit (28) for the absorption solution, disposed in parallel on the said absorption circuit between the said separator flask (18) and the inlet (16) of the said first heat exchanger (12), the said branching circuit comprising a supplementary heat exchanger (26) which, when a part of the said absorption circuit is short circuited by a first branch-off valve (27) situated between the said supplementary heat exchanger (26) and the inlet (16) to the said first heat exchanger (12) and when a part of the said fluid heating circuit is likewise short-circuited by means of a second valve (29) disposed between the outlet (21) from the said second heat exchanger (8) and the supplementary heat exchanger (26) receives on the one hand the absorption solution emanating from the said separating flask (18), and on the other, the fluid which is to be heated as it emerges from the said second heat exchanger (8).