Method of operating heat pump apparatus

专利摘要:
A heat pump apparatus comprises a plurality of separate heat pump circuits (P) wherein the condensers (L) of the heat pump circuits are connected in series with respect to the mass current being heated (m) and in a manner such that the temperature of the mass current being heated increases while being in heat exchange relationship with the fluid circulating in the condensers of the separate heat pump circuits. Similarly, a mass current (m) may be cooled on passing in heat exchange relationship with the evaporators of the heat pump circuits. The mass currents may be air or liquid. The apparatus may be used for drying timber (Fig. 6). <IMAGE>
公开号:SU925256A3
申请号:SU802904349
申请日:1980-04-02
公开日:1982-04-30
发明作者:Лампинен Маркку
申请人:Валмет Ой (Инофирма)；
IPC主号:

专利说明:

one
The invention relates to refrigeration technology, and more specifically to a method for operating a heat transfer unit.
There are known methods for operating a heat pump installation by heating a liquid g working fluid with a low potential coolant, sucking out the resulting vapors at a low pressure, then compressing them and condensing at a high pressure with heat transfer to a high potential heat carrier 1.
A disadvantage of the known methods is their low efficiency at high temperature cooling zones of low potential coolant and heating zones of high potential coolant due to a strong increase in irreversible heat losses and a decrease due to this thermo-dynamic operation cycle of the installation.
The purpose of the invention is to increase the efficiency with high temperature cooling zones of the coolant low.
potential and heating zones of high potential coolant.

权利要求:
Claims (2)
[1]
This goal is achieved by using from four to ten different agents as the working fluid, the heating of the liquid phase and the condensation of high-pressure vapors of which are carried out successively according to heat carriers of low and high potentials when each agent performs its well-known heat pump cycle with a wet one. during the absorption of low-pressure vapors, and in every two successive heat pump cycles, the ratio of the absolute boiling points of their agents is kept constant m and coolants low and high potentials are moved in countercurrent with respect to one another with simultaneous lowering of temperature after heating of the liquid phase of each agent and the temperature increase after condensation of high vapor pressure of the same agent. The drawing shows a diagram of a heat pump installation in which the proposed method of operation is carried out. The installation contains six circuits in which various agents carry out their famous heat pump cycles Compressors 1-6, condensers 7-12, throttle valves 13-18 and evaporators 19 tons are installed in each circuit.
[2]
2. In the evaporators x 19, 20, 21, 22, 23 and 2k, respectively, heat exchange surfaces 25, 2b, 27, 28, 29 and 30 are located, and in heat exchangers 7 8, 9, 10, II and 12, respectively, heat exchange surfaces are placed 31, 32, 33, 35 and 36. A low-grade coolant flows successively through the line 37 through the evaporators, and a high-grade coolant also passes through the condensers through the lines 38. Both heat carriers are moving in countercurrent with respect to each other. In this case, the bottom-25, the copotential coolant is cooled, the heating and evaporation of the liquid phases of the agents in the heat exchange surfaces 25-30, and the high-grade coolant is heated to co-concentrate the high-pressure vapor of the same agents in the heat exchange surfaces 36-31. In the throttle valves 18–13, the liquid phases of these same agents reduce their pressure, and the resulting low-pressure vapors are sucked at low pressure and injected to high pressure by compressors 6–1. Thus, each agent performs a known heat pump cycle in its circuit, extracting heat from the low-grade coolant and transferring it to the high-grade coolant, respectively, flowing through line 37 through all evaporators and through line 38 through all condensers. In the circuit including compressor 1, condenser 7 with heat exchanging surface 31. Throttle valve 13 and evaporator 19 with heat exchanging surface 25, circulates an agent with a high normal boiling point, for example, freon-11, whose normal boiling point is. And in the circuit including the compressor 6, the condenser 12 with the heat exchanging surface Zb, the throttle valve 18 of iispa, the electric 2k with the heat exchange surface 9 5b4 30, is used, for example, freon 506, the normal boiling temperature of which is 12 C. intramural circuits agents employed, normal boiling point which are between the normal boiling point of HFC-P and the normal boiling point of HFC-50b, wherein the ratio of absolute to each two successive cycles agents reflux temperature is maintained constant. The economic efficiency of the invention is expressed in reducing the consumption of electricity consumed for the production of heat. The method of operation of a heat pump installation by heating a liquid working fluid with a low-capacity heat carrier, sucking out the resulting vapors at a low pressure, then compressing them and condensing at a high pressure and removing heat to a high-potential heat carrier, characterized in that cooling zones of a low potential coolant and heating zones of a high potential coolant; from four to ten Various agents that heat the liquid phase and condense high-pressure vapors which are produced successively according to heat carriers of low and high potentials when each agent performs its well-known heat pump cycle with a wet stroke during the suction process of low pressure vapors, and in every two successive heat pump cycles. the ratio of the absolute boiling points of their agents is kept constant, and the heat carriers of low and high potentials are moved in opposition to each other with a simultaneous decrease in temperature after heating the liquid phase of each agent, and temperature rise after condensation of high pressure vapor of the same agent. Sources of information taken into account in the examination 1. Encyclopedic guide to refrigeration. T. III, M., Gostorgizdat, 19b2, p. 30, Fig. one.

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同族专利:

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NO800960L|1980-10-03|

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JPS55134254A|1980-10-18|

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DE3012670A1|1980-10-30|

引用文献:

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EP2182296A3|2008-10-28|2014-02-19|Oilon Scancool Oy|District heating arrangement and method|

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IT1393090B1|2009-02-17|2012-04-11|Agroittica Acqua & Sole Spa|NETWORK FOR THE CONTEMPORARY SUPPLY OF HEATING AND COOLING SERVICES|

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EP2631546A4|2010-10-19|2016-05-18|Yury Markovich Petin|Method for supplying hot water and heating method using said method|

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DE102013214891A1|2013-07-30|2015-02-05|Siemens Aktiengesellschaft|Thermal engineering interconnection of a geothermal energy source with a district heating network|

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ITFI20130244A1|2013-10-16|2015-04-17|Frigel Firenze S P A|"MULTI-STAGE REFRIGERATION UNIT FOR THE REFRIGERATION OF A PROCESS FLUID"|

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JP2014074583A|2014-01-28|2014-04-24|Mitsubishi Electric Corp|Refrigeration air conditioner|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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FI791079A|FI791079A|1979-04-02|1979-04-02|PAO UTNYTTJANDE AV EN VAERMEPUMP SIG GRUNDANDE FOERFARANDE VID TILLVARATAGANDE AV VAERME|

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