Abstract
This paper studies the influence of flash economic system on performance of refrigeration unit using Refrigerant R290. Theoretical analyses of refrigeration system with flash type economizer are carried out firstly, which provide theoretical basis for working parameters. Under different evaporation temperature, influences of supply pressure on the refrigerating capacity and COP are studied and verified through experimental. Experimental results show that, using the economizer can effectively improve the cooling capacity and COP, and achieve the effect of saving energy. With the increase of supply pressure, refrigeration capacity of refrigerating unit and shaft power decreases gradually and the refrigeration coefficient rise first and then drop, to determine the best economic position.
Highlights
With the improvement of people's living standard and the development of industry, refrigerating units are widely used in the food, drinks, dairy products, petrochemical industry, coal, medicine, textile, paper making, tobacco, printing and other industries
This paper studies the gas supply process of the refrigeration unit system with flash type economizer
This paper makes an experimental in thermo performance of refrigeration unit with flash type economizer using Refrigerant R290
Summary
With the improvement of people's living standard and the development of industry, refrigerating units are widely used in the food, drinks, dairy products, petrochemical industry, coal, medicine, textile, paper making, tobacco, printing and other industries. There generally two types of economizer, they are flash type and sub-cooled type The latter is safe and reliable, but the system is high cost and complex. The refrigerating capacity and the screw refrigeration coefficient can be increased by adding a new supply port at the rotor to draw in gas from the economizer [3], [4]. From the Shanghai Jiao Tong University studied the performance of screw refrigeration compressor using R134a and R22 by numerical simulation, and compared the performance difference between economizer units and common refrigeration units [5]. This paper studies the gas supply process of the refrigeration unit system with flash type economizer. Influences of supply pressure on the refrigerating capacity and COP are studied in this paper, and verified through experimental. This research has an important guiding significance for the design and application of refrigerating units with flash type economizer
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
