Analysis of the efficiency and technical performance of R- 290A (Propane) refrigerant and R-290A/R-170 (Ethane) mixture refrigerant blends in a fabricated refrigeration system
Date
10-2013
Degree
Bachelor of Science in Chemical Engineering
College
College of Engineering and Agro-Industrial Technology (CEAT)
Adviser/Committee Chair
Myra G. Borines
Abstract
In this study, the performance of hydrocarbon refrigerant R-290 (propane) and its mixture with R-170 (ethane) in a fabricated refrigeration unit was analyzed to see its effectiveness as a replacement to R-22. The thermodynamic properties of 95/5 and 97.5/5 mixture of R-290 and R-170 were evaluated using the Peng-Robinson equation of state. The compressor was found to have an adiabatic efficiency of 86.28% while the efficiency of the evaporator to be dependent on the refrigerant. The pure R-290 refrigerant was found to be the most economical with a power use of 805 W compared to R-22, 97.5/2.5 and 95/5 mixtures which used 920 W, 862.5 W, and 920 W respectively. R-290 was found to be the best replacement having an energy efficiency ratio (EER) of 9.166 compared to R-22, 97.5/2.5 and 95/5 mixtures which have 8.125, 8.126, and 8.408. Overall, the mixtures are still suitable replacements for R-22 but R-290 still has better performance. With the disadvantage of being flammable, more safety considerations for hydrocarbon refrigerants have to be considered including less refrigerant used, strict ventilation, bigger clearance to ignition sources and use of leak detector for hydrocarbons.
Language
English
Location
UPLB College of Engineering and Agro-Industrial Technology (CEAT)
Call Number
LG 993.5 2013 E62 L37
Recommended Citation
Lapuz, Lawrence Yu, "Analysis of the efficiency and technical performance of R- 290A (Propane) refrigerant and R-290A/R-170 (Ethane) mixture refrigerant blends in a fabricated refrigeration system" (2013). Undergraduate Theses. 1240.
https://www.ukdr.uplb.edu.ph/etd-undergrad/1240
Document Type
Thesis