Heat pumps for simultaneous heating and cooling
Résumé
Thermal demands of many buildings and industrial processes involve heating and cooling, simultaneously or slightly delayed. The typical example is the sport centre comprising a swimming pool and an ice rink. The ambient air and the water of the swimming pool have to be heated while the ice rink has to be cooled. Other examples of simultaneous heating and cooling can be found in office or residential buildings for server room cooling, indoor air heating and cooling and domestic hot water production. The food industry also often necessitate to cool the products and to wash workbenches with hot water. Heat pumps are able to transfer heat from a heat source to a heat sink using mechanical work. They can produce simultaneously heating and cooling energies to carry out energy savings. The question is how far can we take benefit of this asset? This chapter first presents the major situations where heating and cooling demands could occur simultaneously and could be satisfied by heat pumps. The heat pump performance expressed in terms of coefficient of performance and exergy efficiency is then presented for the subcritical vapour-compression thermodynamic cycle. Finally, the integration of such systems in buildings and processes is discussed.
Domaines
Thermique [physics.class-ph]
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Byrne - Heat pumps for simultaneous heating and cooling.pdf (1.48 Mo)
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