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Compositions and methods for refrigeration

A composition, heat transfer composition technology, applied in refrigeration components, refrigeration and liquefaction, chemical instruments and methods, etc., can solve problems such as unavailability

Active Publication Date: 2016-07-13
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, fluoroalkane difluoroethane (HFC-152a) and fluoroalkene 1,1,1-trifluoropropene (HFO-1243zf) are both flammable and therefore not useful in many applications

Method used

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  • Compositions and methods for refrigeration
  • Compositions and methods for refrigeration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1 - Small Refrigeration System

[0065] Energy Consumption (EC) is a recognized measure of refrigerant performance for small refrigeration systems. EC represents the energy consumed by the system over a predetermined period of time and under specific operating conditions. One way to assess the EC of a refrigerant under specific operating conditions is from the ANSI / AHAMHRF-1-2007 Standard mentioned above and incorporated herein by reference.

[0066] A small refrigeration system is provided. Examples of such systems include domestic refrigerators as shown in this embodiment. The outdoor ambient temperature is approximately 32.2°C (+ / - 1°C). Freezer temperature is about -17°C. The test procedure is as follows:

[0067] • Allow the entire refrigerator to have an equilibrium temperature of 32.2°C for at least 24 hours prior to testing.

[0068] • Close the refrigerator door and activate the system.

[0069] • Collect data for at least 48 hours, this is calle...

Embodiment 3

[0080] Example 3 - HFC-134a Substitution - Medium Temperature, MAC, Refrigerator Systems and Heat Pumps

[0081] This example illustrates the performance of one embodiment of the invention in which the refrigerant composition is as indicated above in Table A, A1-A3, and used as a replacement for HFC-134a in four systems. The first system was a system with an evaporator temperature (ET) of about -7°C and a condenser temperature (CT) of about 54°C (Example 3A). For convenience, such heat transfer systems, ie, systems having an ET of about -18°C to about 2°C and a CT of about 27°C to about 66°C, are referred to herein as "medium temperature" systems. The second system was a system with an ET of about 2°C and a CT of about 66°C (Example 3B). For convenience, such a heat transfer system, ie, a system having an evaporator temperature of about 1°C to about 16°C and a CT of about 32°C to about 93°C, is referred to herein as an "automotive AC" system. The third system is a system wit...

Embodiment 4

[0094] Example 4 - Methods and systems using SL-LL heat exchangers

[0095] This example illustrates the performance of three embodiments of the present invention in which the refrigerant compositions are as shown in Table A A1, A2 and A3 in combination with three refrigerants, HFC-134a, HFO-1234yf and HFO-1234ze use compared. The system is a vapor compression refrigeration system with compressor, evaporator, condenser, isenthalpic expansion device and liquid line / suction line heat exchanger. The system is in the form of a domestic refrigerator with a volume of approximately 363.4 liters and has an air-cooled condenser and a forced convection evaporator. The compressor is a 7.5cc displacement compressor. The system uses a capillary SL-LL heat exchanger, which exchanges heat with the compressor suction line. Substantially steady state operating conditions were tested, with an ambient temperature of approximately 32.2°C and a relative humidity of approximately 50%. Freezer t...

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PUM

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Abstract

The invention relates to compositions and methods for refrigeration, and especially relates to heat transfer systems, methods and compositions which utilize a heat transfer fluid comprising: (a) from about 30% to about 65% by weight of HFC-134a; (b) from about 0% to about 70% by weight of HFO1234ze; and (c) from about 0% to about 70% by weight of HFO-1234yf, provided that the amount of HFO-1234ze and HFO-1234yf in the composition together is at least about 35% by weight, with the weight percent being based on the total of the components (a)-(c) in the composition.

Description

[0001] This application is a divisional application of an invention patent application. The application date of the parent case is May 5, 2011, the application number is 201180033305.7 (PCT / US2011 / 035283), and the invention title is "composition for refrigeration and method". [0002] related application [0003] This application relates to and claims priority to each of U.S. Provisional Application Serial Nos. 61 / 240,786, filed September 9, 2009, and 61 / 247,816, filed October 1, 2009, and filed July 29, 2009 Continuation-in-Part of US Application 12 / 511,954, each of which is hereby incorporated by reference in its entirety. technical field [0004] The present invention relates to compositions, methods and systems that can be used in many applications, including in domestic and small refrigeration and / or air conditioning applications and / or heat pump applications, in particular for use in replacing refrigerant HFCs for heating and / or cooling applications -134a refrigerant c...

Claims

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Application Information

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IPC IPC(8): C09K5/04F25B41/00F25B39/00
CPCC09K5/045F25B39/00F25B2400/18C09K2205/22F25B41/40C09K2205/126F25B1/00F25B40/00F25B2400/121C09K3/30C09K5/04C09K2205/40F28D1/00
Inventor S.F.Y.莫塔M.W.斯帕茨R.R.辛赫R.G.理查德E.D.C.V.贝塞拉D.伯格
Owner HONEYWELL INT INC
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