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Hydrofluorocarbon-based composition and use thereof

A technology of composition and compound, applied in the field of heat transfer system, can solve the problems of difficult and expensive, long conversion process, etc.

Active Publication Date: 2010-12-15
ARKEMA FRANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In any case, this conversion process is long, difficult and expensive, especially if it is necessary to flush several times with fresh oil in order to remove all the oil

Method used

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  • Hydrofluorocarbon-based composition and use thereof
  • Hydrofluorocarbon-based composition and use thereof
  • Hydrofluorocarbon-based composition and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Various compositions of the present invention were prepared and subjected to the following tests.

[0037] a) return oil :

[0038] A feed of 10 g of a mixture of mineral oil (M) or alkylbenzene oil (AB) and polyol ester (POE) oil was introduced into a refrigeration coil (1) placed in a cryostat (2 )Inside.

[0039] The coil is connected upstream via a pipe equipped with a shut-off valve (3) and a pressure sensor (4) to a cylinder (5) containing the composition of the invention to be determined, which cylinder is equipped with Dip the tube and place in a 30°C bath.

[0040] The coil extends downstream, through a pipe equipped with a regulating valve (6) and a shut-off valve (7), to the bottom of a collecting cylinder (8), which is placed in a 60°C thermal in the bath. The pipe leading from the top of the collection cylinder is fitted with a gas meter (9).

[0041] figure 1 The circuit described in represents a refrigeration circuit near the evaporator, and the o...

Embodiment 6

[0062] The procedure of this example was the same as that of the previous example, except that the composition of the present invention contained 15% by weight of R-32, 25% by weight of R-125, 50% by weight of R-134a and 10% by weight of R-143a.

[0063] The refrigeration capacity of this composition is 3240kJ / m 3 , a COP of 5.6 and a condensing pressure of 15.5 bar.

[0064] The maximum allowable level of mineral oil is 10.7% and the maximum allowable level of alkylbenzene is 14%.

Embodiment 7

[0065] Example 7 (Compare):

[0066] The procedure for this example was the same as above, except that a composition containing 20% ​​by weight of R-32, 45% by weight of R-125, 15% by weight of R-134a, and 20% by weight of R-143a was used.

[0067] The refrigeration capacity of this composition is 3950kJ / m 3 , a COP of 5.3 and a condensing pressure of 19.7 bar.

[0068] The maximum allowable level of mineral oil is 7.3% and the maximum allowable level of alkylbenzene is 14%.

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PUM

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Abstract

The invention relates to a hydrofluorocarbon (HFC)-based composition, to the use thereof in refrigeration and / or air conditioning and to a heat-transfer system containing same.

Description

technical field [0001] The subject of the invention is a composition based on HFC (hydrofluorocarbons), its use in refrigeration and / or air conditioning, and a heat transfer system containing this composition. Background technique [0002] Heat transfer systems specifically include refrigerators, heat pumps, and conditioned air systems. [0003] In such an arrangement, a refrigerant with an appropriate boiling point evaporates at low pressure, absorbing heat from a first surrounding medium (or region). The vapor thus formed is then compressed by a compressor and subsequently passed into a condenser, where it is transformed into a liquid state, releasing heat into a second surrounding area. The liquid thus condensed is subsequently removed by a pressure reducing valve, at the outlet of the pressure reducing valve, this condensed liquid is transformed into a gas-liquid two-phase mixture, which is finally introduced into the evaporator, where the liquid is again under low pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
CPCF25B2400/18C09K5/045
Inventor 杰勒德·吉尔佩因劳伦特·卡伦
Owner ARKEMA FRANCE SA
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