Organic Rankine cycle mixed refrigerant containing HFC-143(1,1,2-halothane)

Abstract

The invention discloses an organic Rankine cycle mixed refrigerant containing HFC-143(1,1,2-halothane). The organic Rankine cycle mixed refrigerant containing HFC-143 is suitable to be used as refrigerating fluid of a low temperature Rankine cycle system of which the evaporation temperature is 60 DEG C to 100 DEG C. The mixed refrigerant comprises HFO-1234yf (CF3CF=CF2, 2, 3, 3, 3-teflon-1-propylene), HFC-143 (1,1,2-halothane) and HFC-245fa (1,1,1,3,3,3-hexafluoropropane) according to different mass ratio. The preparation method comprises the step of physically mixing the three components according to an appointed ratio at the normal temperature to obtain the corresponding mixed refrigerant. The mixed refrigerant does not damage ozone layers, is lower in greenhouse effect, and accords with environment protection requirements; and thermal parameters are proper and cycling performance is excellent. Under a designed working condition, the efficiency of the Rankine cycle is about 9.5%, and unit mass output net work is basically over 18KJ / kg.

Description

[0001] The present invention is named: "contains HFO-1234yf (CF 3 CF=CH 2 )'s organic Rankine cycle mixed working medium ", the application date is October 13, 2009, and the application number is 200910070780.6. technical field [0002] The invention belongs to a refrigerant in a heat pump or an air-conditioning system, in particular to a working medium in a low-temperature organic Rankine cycle system with an evaporation temperature of 60-100°C. Background technique [0003] Research on low-temperature resources (such as low-temperature geothermal energy, waste heat or solar energy) power generation technology is helpful for reducing fossil energy consumption and CO 2 , SO 2 , NO x It is of great significance to achieve sustainable development by reducing the emission of greenhouse gases and environmental pollutants. One of the main technical factors restricting the utilization of low temperature resources for power generation is the system economy. The practice of med...

AI Technical Summary

Problems solved by technology

One of the main reasons why low-temperature resources are less economical for power generation and utilization is the lack of suitable circulating working fluids

C5F12, HC600, etc. are currently used as working fluids for low-temperature organic Rankine cycles. Their popularization and application are limited due to their large greenhouse effect potential (GWP) or flammability and explosion.

Images