Working environment and heat cycle system

FIELD: chemistry.

SUBSTANCE: in a working environment containing 1,2-difluoroethylene in an amount of, at least, 20 wt % and hydrofluorocarbon, in which the hydrofluorocarbon is difluoromethane, 1,1-difluoroethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane or pentafluoroethane, which is used in a heat cycle system (such as the Rankine cycle system, a heat pump cycle system, a refrigeration cycle system 10, or a heat transfer system).

EFFECT: less impact on the ozone layer and global warming, superior performance of the heat cycle system, simultaneous preservation of the refrigeration coefficient, and improvement of the cooling capacity.

11 cl, 12 tbl, 10 ex, 3 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: method of cold generation, as per which a cooling agent is evaporated subsequently in an evaporator, its pressure is increased in a compressor, cooled and condensed in a condenser. After that, its pressure is decreased and it is returned to the evaporator. Cooling agent pressure is decreased during a periodic process. It involves the following: accumulation of a cooling agent leaving the condenser in a tank before its filling, pumping-out with a compressor of cooling agent vapours from the tank till the pressure is achieved in it, which is equal to pressure in the evaporator, and supply of the rest cooling agent in the tank to the evaporator.

EFFECT: increasing refrigerating factor of refrigerating machines and a conversion factor of heat pumps.

3 dwg

FIELD: heating.

SUBSTANCE: invention relates to the cooling consumer device with the automatic defrosting, in particular, for home use. This cooling device contains internal compartment for food storage, made by thermoformed section, refrigerating chamber with evaporator and fan for air circulation inside the specified internal compartment. This device contains passage for the cooling air supply by fan to the specified cooling consumer device. Specified passage is provided during thermal forming of the specified thermoformed section. Plate is connected with the thermoformed section to close passage and contains pair of parallel branches passing insides the passage. The sealing elements are made out of sponge material, and are located in the passage, they are installed between the thermoformed section and plate branches to prevent the cooling air leaks. Also, manufacturing method of the cooling consumer device is described.

EFFECT: group of inventions increases efficiency and economic feasibility of the cooling consumer device.

11 cl, 3 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to heat-exchange compositions, used in cooling systems and heat-transmitting devices. Heat-exchange composition includes, at least, approximately 45 wt % of trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), to approximately 10 wt % of carbon dioxide (R-744) and from approximately 2 to approximately 50 wt % of 1,1,1,2-tetrafluoroethane (R-134a).

EFFECT: combination of required properties of good cold productivity; low combustibility, low greenhouse potential value WGP with improved miscibility with lubricating materials (lubricants) in comparison with existing refrigerants, such as R-134a and R-1234yf.

59 cl, 1 dwg, 30 tbl

FIELD: machine building.

SUBSTANCE: invention is related to compressors to be used in cooling systems. A piston compressor to be used in a cooling vapour compression system comprises the first and the second inlet manifolds, the first and the second piston compression units, an outlet manifold and the first pulse valve. The inlet manifolds divide the flow entering the compressor. The first and the second piston compression units receive the flow from the first and second inlet manifolds respectively. The outlet manifold collects and distributes the compressed cooling agent from the compression units. The first pulse valve is installed outside the first inlet manifold to control the cooling agent flow in the first inlet manifold. Another implementation version implies that the second valve is installed outside the second inlet manifold to control the flow in the second inlet manifold, and the first and the second valves are controlled by a controller. The controller actuates the first valve with variable width of pulses with their interval being less than the operating inertia of the cooling vapour compression system.

EFFECT: increased efficiency and simplified design of a compressor.

15 cl, 2 dwg

FIELD: heating.

SUBSTANCE: invention refers to refrigerating equipment. cooling method of a sealed unit of a compression refrigerator involves moistening of a condenser surface. The condenser surface and the compressor housing surface is sprinkled with an air-and-water mixture with further blowing; activation/deactivation of the condenser and/or compressor surface blowing is performed by a controller based on measured temperature values of the unit components.

EFFECT: increasing cooling intensity of compressor and condenser surfaces.

1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to processing of solid domestic wastes. Proposed method comprises collection of wastes in metallic container, loading containers with wastes into the kiln, heating and kilning the wastes by steam-gas heat carrier consisting of hydrocarbon gas combustion products mixed with steam and air at the pressure of steam-gas heat cattier exceeding barometric pressure, discharging container with kilned wastes and emptying them. Amount of steam in heat carrier in kilning is kept within 15%-45%, steam-gas heat carrier temperature makes 500-600C. Pressure of steam-gas heat cattier exceeds barometric pressure by 20-100 Pa.

EFFECT: fast decontamination in emergent situations.

6 dwg, 1 ex

FIELD: machine building.

SUBSTANCE: control method of one or more compressors (12) used for compression of one or more gas flows (10) at normal operating temperature. At least one cooling agent compressor (12) is equipped with steam recirculation pipeline (30). Initial flow (10a) for the compressor is obtained as a result of combination of recirculation steam flow (30) from steam recirculation pipeline (30) and at least partially evaporated cooling agent flow (8). Initial flow (10a) for the compressor is passed through inlet separator (11) to obtain gas flow (10) for the compressor, which is passed through cooling agent compressor(s) (12). Inlet temperature T1 of gas flow (10) is determined for the compressor, and cooling agent flow cooling is controlled depending on temperature T1 to obtain gas flow (10) for the compressor at normal operating temperature at least of one cooling agent compressor (12).

EFFECT: use of the invention will allow independent control of temperature of the initial flow entering the compressor.

21 cl, 4 dwg, 1 tbl

FIELD: heating.

SUBSTANCE: refrigerating system includes a compressor acting at the speed of a compressor between the first speed and the second speed for supply of flow of compressed fluid medium to a header under the compressor pressure, and a condenser interconnected as to fluid medium with the header to receive compressed fluid medium. A fan of the condenser operates at speed of the fan between minimum speed of the fan and maximum speed of the fan to direct the cooling flow to the condenser to cool down compressed fluid medium, and an evaporator installed to receive compressed fluid medium flow and acting to cool down the second fluid medium. Controller operates at least partially based on the measured temperature of the second fluid medium and measured temperature of cooling flow to determine desired pressure and change the speed of the compressor and speed of the fan so that the compressor pressure is equal to desired pressure.

EFFECT: use of the invention will allow improving the efficiency under variable conditions.

19 cl

Conditioner // 2488047

FIELD: power engineering.

SUBSTANCE: conditioner (1) comprising a coolant circuit (10), including a compression mechanism (21), a heat exchanger (23) on the side of a heat source, an expansion mechanism (24) and a heat exchanger (41) on the usage side, and also an electromagnet induction heating device (6), which heats a tube (10f) for coolant and/or an element in thermal contact with coolant, passing via the tube, a control unit (11) and a fan on the side of the heat source. The control unit sets the heating device (6) into the condition of forced shutdown, if any of the conditions specified below is met: the condition, when the difference between the temperature set inside the room and temperature inside the room is less than the specified temperature or the compression mechanism is stopped; and the condition, when low pressure reduction is controlled, high pressure reduction is controlled, inverter outlet tube temperature reduction is controlled, inverter electric current reduction is controlled, pressure difference to compression ratio protection is controlled, inverter electric current/temperature reduction is controlled, or total electric current reduction is controlled, or when status of alarm on gas shortage is active.

EFFECT: using the invention will save energy by prevention of operation efficiency drop.

3 cl, 7 dwg

Air conditioner // 2487304

FIELD: ventilation.

SUBSTANCE: conditioner (1) uses a refrigerating cycle comprising a compressor (21) which provides circulation of the coolant, and a tube (F) for the coolant, covered with a magnetic tube (F2) around the periphery, and comprises a coil (68), an electromagnetic induction thermoresistor (14) and a controller (11). The coil (68) generates a magnetic field for induction heating of the magnetic tube (F2). The electromagnetic induction thermoresistor (14) detects the temperature of the coolant which passes through the accumulating unit (F), which is at least one part of the refrigerating cycle. The controller (11) allows the generation of a magnetic field by means of the electromagnetic field generator when the condition of permit of generation of electromagnetic field is met. The condition of permit of generation of electromagnetic field is a condition where the temperature detected by the electromagnetic induction thermoresistor varies between two states of the output signal of the compressor (21).

EFFECT: conditioner can prevent excessive temperature increase of the coolant even when the coolant is heated by electromagnetic induction heating method.

11 cl, 28 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to compositions, containing 2,3,3,3-tetrafluoropropene, applied as a heat-conductive liquid. Described is the application of a composition, containing from 10 to 90 wt % of 2,3,3,3-tetrafluoropropene, from 5 to 80 wt % of HFC-134a and from 5 to 10 wt % of HFC-32, as a heat-conductive fluid medium in compressor cooling systems with heat-exchangers, functioning in a counter-flow mode.

EFFECT: invention provides the ozone-safe heat-conductive composition, which has a zero value of the ozone layer depletion (ODP) and a reduced in comparison with HFC-134a value of the global warming potential (GWP) with an increased efficiency coefficient.

6 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to heat-exchange compositions, used in cooling systems and heat-transmitting devices. Heat-exchange composition includes, at least, approximately 45 wt % of trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), to approximately 10 wt % of carbon dioxide (R-744) and from approximately 2 to approximately 50 wt % of 1,1,1,2-tetrafluoroethane (R-134a).

EFFECT: combination of required properties of good cold productivity; low combustibility, low greenhouse potential value WGP with improved miscibility with lubricating materials (lubricants) in comparison with existing refrigerants, such as R-134a and R-1234yf.

59 cl, 1 dwg, 30 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to compositions, methods and systems, used in many fields, including in particular heat transmission systems, for instance, cooling systems, foam generators, foam compositions, foams and products, including foam or made of foam, methods of obtaining foams, including single-component ones, aerosols, propellents, cleaning compositions. Compositions, used for said systems, contain, at least, about 5 wt % of 1-chloro-3,3,3-trifluoropropene (HFCO-1233zd) and 1,3,3,3-tetrafluoropropene (HFO-1234ze).

EFFECT: claimed compositions have advantages for wide spectrum of applications and are free of disadvantages of known compositions.

86 cl, 14 tbl, 54 ex

FIELD: chemistry.

SUBSTANCE: invention refers to compositions containing 2,3,3,3-tetrafluoropropene, and using them as a fluid heat medium. What is described is using a three-component composition of 2,3,3,3- tetrafluoropropene as a heat-transfer fluid in refrigeration systems to substitute the mixture R-410A. The above composition contains 40 to 58 wt % of 2,3,3,3- tetrafluoropropene, 2 to 10 wt % of 1,1-difluoroethane and 40 to 50 wt % of difluoromethane. What is also described is a method for heat transfer with using the above composition.

EFFECT: invention provides a zero value of the ozone layer depletion (ODP) and a warming potential (GWP) lower as compared to R-410A with an increased efficiency coefficient.

9 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to compositions, containing 2,3,3,3-tetrafluoropropene, and their application as liquid heat carriers, extension agents, solvents and aerosols. Composition contains from 15 to 50 wt % of 2,3,3,3-tetrafluoropropene, from 5 to 40 wt % of from 5 to 40 wt % of HFC-134a and from 45 to 60 wt %, preferably from 45 to 50 wt %, of HFC-32.

EFFECT: claimed composition has critical temperature higher than 87C, temperature at compressor output, equivalent for R-410A, and can replace R-410A without changing technology, used in compressors.

10 cl, 2 tbl

FIELD: heating.

SUBSTANCE: invention relates to the use as the heat transfer fluid medium in compressor systems with heat exchangers operating in the countercurrent mode or in the mode of split flow with countercurrent tendency, of the two-component composition of 2,3,3,3-tetrafluoropropyl and difluoromethane.

EFFECT: invention relates to a heat transfer method, in which the said composition is used as a coolant in compressor systems with heat exchangers in the countercurrent mode or in the cross mode with countercurrent tendency.

11 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to composition of refrigerant, consisting in fact of hydrofluorocarbon components, consisting of: HFC 134a 15-45%, HFC 125 20-40%, HFC 32 25-45%, HFC 227ea 2-12%, HFC 152a 2-10% together with optional hydrocarbon component; where quantity is given by weight and in total constitutes 100%. Invention also relates to composition of said refrigerant, which additionally contains lubricating material of compressor, and to two versions of cooling circuit, using said refrigerants.

EFFECT: claimed composition is non-inflammable, energy-effective and low-toxic.

21 cl, 4 tbl, 4 ex

FIELD: heating.

SUBSTANCE: invention can be used in compressor-type refrigeration systems. The method of heat transfer using three-component compositions comprising 2,3,3,3-tetrafluoropropyl, 1,1-difluoroethane and difluoromethane as the heat transfer fluid medium in refrigeration systems comprising heat exchangers operating in countercurrent mode or cross mode with countercurrent tendency.

EFFECT: invention enables to improve the efficiency of the units.

4 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: claimed invention relates to the application of a three-component composition, containing 2,3,3,3-tetrafluoropropene, 1,1,12-tetrafluoroethane (GFU-134a) and difluoromethane (GFU-32), as a liquid heat carrier in compression refrigerating installations, containing heat exchangers, working in a counterflow mode or in a transverse mode with a bias for the counterflow mode. The invention also relates to a method of heat transmission, in which the said three-component composition is used as a coolant.

EFFECT: invention demonstrates unexpected advantages relative to the volume productivity (% CAP) and cooling coefficient (% COP), which makes it possible to exploit them in systems with a smaller pipe diameter, and therefore with the greater efficiency of equipment functioning.

9 cl, 3 tbl

FIELD: heating.

SUBSTANCE: invention relates to the use of two-component compositions of 2,3,3,3-tetrafluoropropene and difluoromethane as the heat transfer fluid medium in low-temperature and medium-temperature refrigeration systems of compressor type with heat exchangers operating in counter-current mode or in split-flow mode with counter-current tendency and to the method of heat transfer.

EFFECT: invention enables to provide higher efficiency of compressors.

9 cl, 2 tbl

FIELD: refrigeration engineering.

SUBSTANCE: multicomponent refrigerant suitable preferably for one-loop refrigeration systems with single-step compressor contains 0.30-0.60 mol methane as low-boiling component, 0.10-0.70 mol middle-boiling component such as tetrafluoromethane, trifluoromethane, octafluoropropane and octafluorocyclobutane, and 0.05-0.30 mol high-boiling alkane component such n-pentane, isopentane, n-hexane, or binary mixtures thereof.

EFFECT: increased specific cold productivity and energetic efficiency of system within temperature range from -120 to -80°C, and increased service time of system.

6 cl, 2 dwg, 1 tbl

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