Unlock instant, AI-driven research and patent intelligence for your innovation.

Green medium and high temp. synthetic working medium for hot pump

A high-temperature heat pump and green synthesis technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve problems such as hydrocarbons hindering applications

Inactive Publication Date: 2005-05-18
TIANJIN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flammability and explosiveness of hydrocarbons hinder their wide application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: take 60 mol %HC600, 35 mol %FC13I1,5 mol %HFE143, used as a refrigerant after physical mixing at room temperature.

Embodiment 2

[0016] Embodiment 2: take 80 mol %HC600, 10 mol %FC13I1,10 mol %HFC245ca, used as a refrigerant after physical mixing at room temperature.

Embodiment 3

[0017] Embodiment 3: get 85 mol %HC600, 10 mol %FC13I1,5 mol %HFC245fa, used as a refrigerant after physical mixing at room temperature.

[0018] If the design working condition of the heat pump system is taken as follows: the evaporation temperature is 40°C, the condensation temperature is 80°C, the superheat temperature is determined according to the specific working fluid composition, and the compressor inlet working fluid is guaranteed to be in a saturated gas state, and the supercooling temperature is 75°C. Compressor efficiency is 85%, according to cycle calculation, the relevant parameters of above-mentioned three embodiments and compare with CFC114 are listed in following table 1:

[0019] CFC114

Example 1

Example 2

Example 3

ODP

0.85

0

0

0

GWP

9200

-

-

-

Evaporation pressure MPa

0.333

0.453

0.373

0.401

Condensing pressure MPa

0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Green medium-high temperature heat pump synthetic working fluid, with natural working medium HC600 as the main body, HC600 and FC13I1, HFE143, HFC245ca, HFC245fa form a new green medium-high temperature heat pump working medium with different components and components, and use different components and components different molar ratios. FC13I1, HFE143, HFC245ca, and HFC245fa four working fluids are not only used as refrigerants in heat pump systems, but also as flame retardants. The beneficial effect of the present invention is that the flammability of the working fluid is reduced by introducing the flame-retardant component working medium and changing the components and composition of the mixture. The best HC600 / flame retardant mixed working fluid, used to replace CFC114 in medium and high temperature heat pump systems.

Description

technical field [0001] The present invention pertains to refrigerants in heat pumps or refrigeration systems. Background technique [0002] It is well known that CFCs and HCFCs destroy the ozone layer of the atmosphere, thereby greatly increasing the amount of ultraviolet rays directly irradiating the earth, causing damage to human health and ecosystems. Therefore, the United Nations has successively formulated a series of regulations such as the Montreal Protocol on Substances that Deplete the Ozone Layer, the Copenhagen Amendment Protocol, and the Kyoto Protocol, setting a clear control schedule for the banning and banning of CFCs and HCFCs. However, so far, the research on the replacement of CFC114, the traditional working medium of medium and high temperature heat pumps, has not been carried out comprehensively and rapidly. This not only hinders the comprehensive substitution of CFCs and HCFCs, but also inevitably creates a bottleneck for the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
Inventor 王怀信马利敏
Owner TIANJIN UNIV