HIGH-EFFICIENCY HEAT PUMP, WHICH COMBINES ABSORPTION AND CHANGES IN SOLUTION CONCENTRATION Russian patent published in 2017 - IPC F25B15/06 F25B30/04 F25B11/02 

FIELD: machine engineering.

SUBSTANCE: invention relates to methods for compressing the working fluid used to transfer heat from the coolant with a lower (E) to the coolant temperature with a higher temperature (Al), and may be used in the heat pump. The method combines absorption and change in concentration of the electrolyte solution, such as ZnCl₂, (Na, K, Cs, Rb) OH, CoI₂, (Li, K, Na) (Cl₂, Br₂, I, SO₄) or substances whose concentration decreases with increasing temperature, in a polar solvent: H₂O, NH₃, Methanol, ethanol, methylamine, DMSO, DMA, AN, formamide, formic acid. A highly saturated solution is cooled, discharged from the absorber-exchanger (A1) from a high (1) to a low (2) temperature during passage through heat exchanger-crystalliser (NOT) to form absorbent crystals. Crystals separated (K1), remains low concentrated solution (2). For cooling low-concentrated solution is partially expanded (2), steam is supplied to crystals (R1) in which they are absorbed. Tighten the solution to the heat exchanger-evaporator pressure (E). The low-concentrated solution is expanded in the turbine producing work and refrigerating cycle to partially evaporate in an evaporator-heat exchanger (E) at a given temperature and solvent vapor formation. The additional absorbent crystals (K2) are separated, connecting them into the previously selected crystals (K1). Steam is heated by passing it through a heat exchanger, a crystalliser (NOT) and compressed (5) of its pressure absorber (A1). The low-concentrated solution (3) remaining after partial evaporation compressed to a pressure absorber (A1) and heated in a heat exchanger, a crystalliser (NOT). The separated crystals are heated in the heat exchanger, a crystalliser (NOT) is dissolved in a hot solution of (3) to form the highly-concentrated solution. Steam (4) is streamed into the absorber (A1), where the vapor is absorbed, and the heat is removed and re-formed starting solution.

EFFECT: method improves the efficiency of heat transfer, such as heating, air conditioning.

8 cl, 4 dwg