TY - JOUR
T1 - The performance of a triple pressure level absorption cycle (TPLAC) with working fluids based on the absorbent DMEU and the refrigerants R22, R32, R124, R125, R134a and R152a
AU - Jelinek, M.
AU - Levy, A.
AU - Borde, I.
N1 - Funding Information:
I. Borde, A. Levy, F. Ziegler, Development of an energy-efficient absorption cooling unit, Ministry of Science-BMBF – Joint Israel–Germany Project – Grant No. -1718, 2000–2002.
PY - 2008/8/1
Y1 - 2008/8/1
N2 - This paper compares the performance of a single-stage triple pressure level (TPL) absorption cycle with different refrigerant-absorbent pairs. Four HFC refrigerants namely: R32, R125, R134a and R152a which are alternative to HCFC, such as R22 and R124, in combination with the absorbent dimethylethylenurea (DMEU) were considered. The highest coefficient of performance (COP) and the lowest circulation ratio (f), were found as a function of the generator temperature for a given evaporating and cooling water temperatures. The sensitivity of the COP and f for evaporator and cooling water temperatures changes at the maximum COP for the best three working fluids were also examined. It was obtained that the preferable pair is R124-DMEU and among working fluids based on HFC the preferable pair is the R125-DMEU.
AB - This paper compares the performance of a single-stage triple pressure level (TPL) absorption cycle with different refrigerant-absorbent pairs. Four HFC refrigerants namely: R32, R125, R134a and R152a which are alternative to HCFC, such as R22 and R124, in combination with the absorbent dimethylethylenurea (DMEU) were considered. The highest coefficient of performance (COP) and the lowest circulation ratio (f), were found as a function of the generator temperature for a given evaporating and cooling water temperatures. The sensitivity of the COP and f for evaporator and cooling water temperatures changes at the maximum COP for the best three working fluids were also examined. It was obtained that the preferable pair is R124-DMEU and among working fluids based on HFC the preferable pair is the R125-DMEU.
KW - Absorption refrigeration
KW - Organic working fluids
KW - Triple pressure level cycle
UR - http://www.scopus.com/inward/record.url?scp=41449092542&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2008.01.023
DO - 10.1016/j.applthermaleng.2008.01.023
M3 - Article
AN - SCOPUS:41449092542
SN - 1359-4311
VL - 28
SP - 1551
EP - 1555
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
IS - 11-12
ER -