Year 2017, Volume 18 , Issue 1, Pages 78 - 96 2017-03-31

PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE

Ahmet selim Dalkilic [1]


Energy savings on cooling systems can be performed by using novel refrigeration cycles. For this aim, vapour compression-vapour absorption cascade refrigeration systems can be considered as substitute to single-stage vapour compression refrigeration systems. Renewable energy sources of geothermal and solar heat, waste heat of processes have been used by these cycles to provide cooling and they also require less electrical energy than vapour compression cycles having alternative refrigerants. In this study, a vapour compression (VC) and vapour absorption (VA) cascade systems are analysed with the second law analysis for varied cooling capacities. While lithium bromide-water and NH3/H2O are the working fluids in VA part, various refrigerants are used in VC section. The refrigerants of R134a and R600a, R410A and R407C are tested as drop in alternatives for R12 and R22, respectively. The effects of alteration in cooling capacity, superheating and sub cooling in VC part, temperature in the generator and absorber, and degree of overlap in cascade condenser in VA part on the coefficient of system performance are studied. Validation of the results have been performed by the values given in the literature. Improvement in COP of VC, VA and cascade system are obtained separately. According to the analyses, cascade systems’ COP values increase with increasing the temperatures of generator and evaporator and they also increase with decreasing the condenser and absorber temperatures. Moreover, the generator has the highest exergy destruction rates, second and third one were the condenser and absorber, respectively. Electricity consumption and payback period are also determined considering the various parameters of the study.

Subjects Engineering
Journal Section Articles
Authors

Author: Ahmet selim Dalkilic

Dates

Publication Date : March 31, 2017

Bibtex @research article { aubtda300427, journal = {Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering}, issn = {1302-3160}, eissn = {2146-0205}, address = {}, publisher = {Eskişehir Teknik Üniversitesi}, year = {2017}, volume = {18}, pages = {78 - 96}, doi = {10.18038/aubtda.300427}, title = {PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE}, key = {cite}, author = {Dalkilic, Ahmet selim} }
APA Dalkilic, A . (2017). PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE. Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering , 18 (1) , 78-96 . DOI: 10.18038/aubtda.300427
MLA Dalkilic, A . "PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE". Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering 18 (2017 ): 78-96 <https://dergipark.org.tr/en/pub/aubtda/issue/28283/300427>
Chicago Dalkilic, A . "PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE". Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering 18 (2017 ): 78-96
RIS TY - JOUR T1 - PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE AU - Ahmet selim Dalkilic Y1 - 2017 PY - 2017 N1 - doi: 10.18038/aubtda.300427 DO - 10.18038/aubtda.300427 T2 - Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering JF - Journal JO - JOR SP - 78 EP - 96 VL - 18 IS - 1 SN - 1302-3160-2146-0205 M3 - doi: 10.18038/aubtda.300427 UR - https://doi.org/10.18038/aubtda.300427 Y2 - 2019 ER -
EndNote %0 Anadolu Üniversitesi Bilim Ve Teknoloji Dergisi A - Uygulamalı Bilimler ve Mühendislik PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE %A Ahmet selim Dalkilic %T PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE %D 2017 %J Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering %P 1302-3160-2146-0205 %V 18 %N 1 %R doi: 10.18038/aubtda.300427 %U 10.18038/aubtda.300427
ISNAD Dalkilic, Ahmet selim . "PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE". Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering 18 / 1 (March 2017): 78-96 . https://doi.org/10.18038/aubtda.300427
AMA Dalkilic A . PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE. AUBTD-A. 2017; 18(1): 78-96.
Vancouver Dalkilic A . PARAMETRIC STUDY OF ENERGY, EXERGY AND THERMOECONOMIC ANALYSES ON VAPOR-COMPRESSION SYSTEM CASCADED WITH LIBR/WATER AND NH3/WATER ABSORBTION CASCADE REFRIGERATION CYCLE. Anadolu University Journal of Science and Technology A - Applied Sciences and Engineering. 2017; 18(1): 96-78.