Abstract
This study investigated the performance of a single-stage scroll compressed air source heat pump coupled with a flash tank indirect vapor injection. In the refrigerant circulating piping of the hea...
Highlights
Global consumption of fossil energy increased by 33%– 45% from 1990 to 2010,1 exacerbating global warming
The single-stage scroll air source heat pump system with indirect vapor injection loop can be divided into water cycle side and refrigerant cycle side, and the refrigerant cycle side can be divided into major loop and auxiliary loop
The refrigerant of major loop exchanges heat with the refrigerant of auxiliary loop in the flash tank, so that the major loop refrigerant is cooled to subcooled liquid, which is turned by expansion valve into low-pressure and low-temperature liquid-vapor refrigerant, it enters the evaporator to absorb environmental heat to become low-pressure and lowtemperature vaporous refrigerant, and it merges the vaporous refrigerant of auxiliary loop in front of the accumulator inlet before entering the accumulator
Summary
Global consumption of fossil energy increased by 33%– 45% from 1990 to 2010,1 exacerbating global warming. Stern[2] projected that economic losses due to global warming from 2007 to 2020 would amount to 13.8% of global gross domestic product (GDP). Due to these issues, demands for efficient energy consumption are continue to increase. Demands for efficient energy consumption are continue to increase To meet these demands, governments are working hard to strengthen CO2 emission controls, the standards for the certification of products, and companies are spurring the development of new technology to derive high efficiency of products. The same demand is increasing for high efficiency in heating and cooling systems by growing customer recognition of the need for energy saving.
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