Mixed working medium of high temperature heat pump in utilization of terrestrial heat of coal mine

A high-temperature heat pump and mixed working medium technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve problems such as high GWP value, ozone layer destruction, flammability and practical application difficulties, and achieve good environmental performance and thermal performance Good results

Inactive Publication Date: 2015-09-23
XIAN UNIV OF SCI & TECH
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, it is limited because of its ozone layer destruction and high GWP value; on the other hand, it cannot provide higher temperature heat energy for use in life and production
In recent years, HFCs substan

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mixed working medium of high temperature heat pump in utilization of terrestrial heat of coal mine
  • Mixed working medium of high temperature heat pump in utilization of terrestrial heat of coal mine
  • Mixed working medium of high temperature heat pump in utilization of terrestrial heat of coal mine

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0077] Example 1: In terms of mass percentage, 75% of HFO-1366mzz (Z) and 25% of HFC-134a are taken as the heat pump cycle working fluid after being physically mixed at room temperature.

Example Embodiment

[0078] Example 2: In terms of mass percentage, 80% of HFO-1366mzz (Z) and 20% of HFC-134a are taken as the heat pump cycle working fluid after being physically mixed at room temperature.

Example Embodiment

[0079] Example 3: In terms of mass percentage, 85% of HFO-1366mzz (Z) and 15% of HFC-134a were taken as the heat pump cycle working fluid after being physically mixed at room temperature.

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

The invention discloses a mixed working medium of a high temperature heat pump in the utilization of the terrestrial heat of a coal mine. The mixed working medium comprises one or two kinds of HFO-1336mzz(Z), HFC-134a, HFC-236ea, HFE-245fa2, HFC-227ea, HFC-245fa and HFE-7000. The mixed working medium disclosed by the invention is nonflammable, the ODP is equal to zero, an ozone layer is not destroyed, the GWP is lower, and the mixed working medium conforms to environmental protection performance requirements; under the designed working conditions, the heating performance coefficient is about 5.54, the heating load of a unit volume is about 1500kJ/m3, and the thermal working performance is better.

Description

technical field [0001] The invention relates to the technical field of working medium of a thermodynamic cycle system, in particular to a mixed working medium of a medium-high temperature heat pump for geothermal utilization in coal mines. Background technique [0002] At the cost of consuming a small amount of electric energy, heat pump technology transfers low-temperature and low-grade heat energy (industrial wastewater, geothermal water, soil, solar energy, atmosphere, etc.) The waste heat resources that are difficult to use can provide the thermal energy required by industry with high efficiency. In order to meet the requirements of industrial development for higher heating temperature, heat pump technology is developing in the direction of medium and high temperature heat pumps and high temperature heat pumps. While improving the utilization rate of waste heat resources, medium and high temperature heat pumps reduce the discharge temperature of waste heat and reduce en...

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
IPC IPC(8): C09K5/04
CPCC09K5/04C09K5/045C09K2205/112C09K2205/122C09K2205/126
Inventor 张京兆
Owner XIAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products