Novel environmental-protection refrigerant component for substituting 1, 1, 1, 2- tetrafluoroethane (hydrochlorofluorocarbon (HFC)-134a)

A technology of tetrafluoroethane and refrigerant, applied in the field of replacement 1, can solve the problems of reducing cooling effect, low global warming index of refrigerant, difficulty in obtaining coefficient of performance, etc., and achieve good energy saving effect

Inactive Publication Date: 2011-03-09
濮阳市中炜精细化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0026] The global warming index of the refrigerant in this type of invention patent is relatively low, but the temperature difference (GTD) is 5-7 degrees, and the evaporator freezes, which greatly reduces the cooling effect
And to provide a similar volume (Volumetric capacity, VC), but because it is a n

Method used

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  • Novel environmental-protection refrigerant component for substituting 1, 1, 1, 2- tetrafluoroethane (hydrochlorofluorocarbon (HFC)-134a)
  • Novel environmental-protection refrigerant component for substituting 1, 1, 1, 2- tetrafluoroethane (hydrochlorofluorocarbon (HFC)-134a)
  • Novel environmental-protection refrigerant component for substituting 1, 1, 1, 2- tetrafluoroethane (hydrochlorofluorocarbon (HFC)-134a)

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment is the first best condition:

[0064] After mixing 54 kg of propane (R-290) and 45.9 kg of isobutane (R-600a), in order to make a near-azeotropic mixed refrigerant composition, 0.1 kg of hexamethyl silicone oil was added as an additive to prepare a refrigerant composition.

Embodiment 2

[0066] Present embodiment is the 2nd best condition:

[0067] After mixing 53kg of propane (R-290) and 43.9kg of isobutane (R-600a), add 2kg of n-butane (R-600) and 1kg of propylene (R-1270) to make a near-azeotropic mixed refrigerant composition , adding 0.1 kg of hexamethicone oil additive to produce a refrigerant composition.

experiment example 1

[0068] Experimental example 1 (theoretical and actual temperature ramp test)

[0069] figure 2 It shows the temperature gradient line diagram of the binary mixed refrigerant composition without adding additives obtained by the REFPROP8.0 program of the present invention. However, in order to form the near-azeotropic refrigerant composition for the purpose of the present invention, after adding additives, such as test figure 1 The experimental device so that it can be known that if image 3 Its temperature ramp results are minimized.

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Abstract

The invention relates to a novel environmental-protection refrigerant for substituting 1, 1, 1, 2- tetrafluoroethane (hydrochlorofluorocarbon (HFC)-134a), which is characterized in that 50 to 56kg of propane (R-290) and 40 to 49kg of isobutene (R-600a) of hydrocarbon series are taken as a basis; 2 to 5kg of n-butane (R-600) and 1 to 3kg of propylene (R-1270) are added; and a near-azeotropic mixture refrigerant with the ozone depletion potential (ODP) of 0 and the global warming potential (GWP) of 3 is formed after 0.5 to 1kg of an additive-hexamethylene silicone oil are added for near-azeotropic.

Description

[0001] Technical field: The present invention relates to a new environment-friendly refrigerant composition for replacing 1,1,1,2-tetrafluoroethane (HFC-134a). Background technique [0002] Refrigerant (Refrigerant) refers to the start-up fluid of the refrigeration cycle, the general term for the carrier from low-temperature objects to high-temperature heat, mainly using low-cost, chemically stable, and efficient chlorofluorocarbons (Chloro fluorocarbon, hereinafter referred to as 'CFC') And hydrochlorofluorocarbon (Hydrochlorofluorocarbon, hereinafter referred to as 'HCFC') and fluorocarbon (Hydro fluorocarbon, hereinafter referred to as 'HFC'). [0003] However, the destruction of the ozone layer in the stratosphere caused by CFCs and HCFCs has become a global environmental problem. Therefore, the production and use of CFCs and HCFCs that destroy the ozone layer in the stratosphere are restricted by the Montreal Protocol adopted in 1987. Therefore, most countries in the worl...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 尹明和
Owner 濮阳市中炜精细化工有限公司
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