SU1267129A1 - Electrochemical refrigerator (heat chamber) - Google Patents

Abstract

1. ELECTROCHEMICAL REFRIGERATOR TER. MOSKHOF, containing a heat-insulated chamber and two electrochemical cells with electrodes connected to a direct current source, the cells being interconnected through a regenerative heat exchanger and one of them is placed in the chamber, and the other is outside the latter, distinguished by , what. in order to increase heat and cooling capacity and reduce energy consumption, the cells are made in the form of vessels coaxially arranged on opposite sides of the side wall of the chamber, the regenerative heat exchanger is located under the chamber, and the electrodes are made in the form of hollow cylinders with two-layer walls of porous material and an electrolyte between the layers, coaxially mounted in their cell and connected to a current source via a polarity switch. 2. Refrigerator-cabinet under item 1, characterized in that, in order to increase operational reliability when operating from a low-voltage DC source, each electrode is made multi-compartment with dielectric spacers between sections. (L y O5 1chE: o

Description

The invention relates to hot-water technology, in particular to refrigerators with a small volume of the refrigerating chamber, on electrochemical cells. The purpose of the invention is to increase tenloi of cold-productivity and increase: Kcn: iyaratsionnogo reliability when operating from a low-voltage source of constant current. FIG. 1 x oma u depicts an electrochemical refrigerator-te () MON1kaf, cut; in fig. 2 is a section A - A in FIG. 1. Electro) cooler cooler-soda cup) lives two elektc chime cells 1 and 2,)) Egenerative heat exchanger 3, regulator 4 for insuring a current source, fa) knock 5, bar 6, head 7, bottom port 8 , terminals 9 for external power source, switch 10 and not-for-one 1 1 polarity of the circuit. Cell I contains cavities 12 and 13 of high and low pressures, respectively, electrodes 14 and 15, electrolyte 16, heat-conducting wall 17, ten-conducting grid 18 and heat-insulated wall 19 with finning. Cell 2 consists of high and low pressure cavities 20 and 21, electrodes 22 and 23, electrolyte 24, corrugated tenlops) water wall 25, heat 11) water grid 26 and tenlois; 1H11. Ion wall 27. Thermal insulation is located between cells 1 and 2 28. The refrigerator-cabinet is also equipped with a chamber 29 with an empty volume. The electrode blocks of the cells are made multisectional with dielectric spacers 30 between the sections through which n) O11ush, tokovods 31 are enulented. A mixture of gases can be used as the working fluid in the cells, but ammonia with hydrogen is non-stoichiometric: 1 mole of the working fluid is 1 mole ammonia nlus 0.5 mol of hydrogen, and electrolyte membranes can be used for |) pure dielectric dry impregnated with saturated aqueous solution of a salt with a conductivity of the complex ion of the type (NH4) 2SO4, NH4C1, NH4NO3. Electrochemical refrigerator-thermocase works as follows. B) the mode of the refrigerator to the terminals 9 is supplied with voltage from a constant current source. Cell 2 operates in the electrochemical expander mode, and cell 1 operates in the electrochemical co-mode 12 9 litter mode. The work-flow in cell 2 is the process of expanding the worker from maximum pressure, e.g. I atm, to minimum pressure, e.g. 0.001 atm, with Ten.ia absorbed from chamber 29 at the minimum temperature, 263 K, and consists in ionization high pressure working fluid; 1e1 | and in cavity 20 by the reaction of NH: i + And e - NHtna membrane interface 24 - elect) 22, the flow of NH ions through the electrolyte layer under the action of an elec- tant gradient electrolytic zero, recombination and () P () in lia | ranitsa. membrane 24 elect) () d 23 by the reaction NHI + e - NH: {- f - li in n 21. The current flow process in cell 1 is the process of compressing the working body and iijjo comes out with heat at maximum temperature, measuring 313 K, into the environment and consists in ionizing the low pressure working fluid in cavity 13 but the Ntlj action + H - e at the boundary of the electrode 15 - membrane 16, the flow of ions NMjt through the electrolyte layer under the action of the electrostatic gradient iio; m, recombination of NH4 ions on the boundary of the membrane; ana 16 electrode 14 by the reaction NH.f + e NH.i + H in cavity 12. To reduce heat losses in the isobaric cycle Good cooling and heating processes are carried out in heat exchangers 3. In the heat mode, the switch 4) and the switch 1 1 field switch to the opposite position. C) The result is that cell 1 works in) the mode of the electrochemical expander, absorbs heat from the environment, and cell 2 - in) the mode of the electrochemical KOMiipeccojia, dumping heat into the chamber 29 at a higher temperature). Smooth regulation of the heating and cooling modes of the chamber 29 is carried out by a rheostat 4. When an electrochemical refrigerator-cabinet is operating from a low-voltage DC source, the number of cell sections of the electrode units can be determined by the formula: where n is the number of gaskets; E - EMF of the source of the thread; and-- electrolyte decomposition voltage.

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Claims (2)

1. ELECTROCHEMICAL REFRIGERATOR-TERMOSHKAF, containing a thermally insulated chamber and two electrochemical cells with electrodes connected to a direct current source, the cells being connected to each other through a regenerative heat exchanger and one of them is placed in the chamber, and the other is outside the latter, characterized in that, in order to increase heat and cooling capacity and reduce energy consumption, the cells are made in the form of vessels coaxially located on opposite sides of the side wall of the vessel chamber, the regenerative heat exchanger olozhen under the camera, and the electrodes are formed as hollow cylinders with walls of the double-layered porous material and the electrolyte between layers, is coaxially mounted in its cell and are connected to the current source via the polarity switch. 2. Refrigerator-oven according to π. 1, characterized in that, in order to increase operational reliability during operation from a low-voltage direct current source, each electrode is multi-sectioned with dielectric spacers between sections. (rig 1