TY - GEN
T1 - Performance evaluation method of CO2 heat pump driven refrigerated display cabinets
AU - Redo, Mark Anthony
AU - Giannetti, Niccolo
AU - Tojo, Kenji
AU - Ohno, Keisuke
AU - Yamaguchi, Seiichi
AU - Saito, Kiyoshi
N1 - Funding Information:
This research is based on the results of "the Project on method to estimate GHG reduction potential of air conditioners and refrigeration equipment using non-fluorinated gases (FY 2016)" from the Ministry of the Environment Government of Japan in collaboration with Mitsubishi Research Institute.
Publisher Copyright:
© 2018 International Institute of Refrigeration. All rights reserved.
PY - 2018
Y1 - 2018
N2 - An annual energy performance evaluation method for open refrigerated display cabinets (ORDC) driven by CO2 heat pumps in supermarkets is established to predict the annual heat load, energy consumption, COP and total CO2 emissions. Significant condition variations that affect the system performance are considered. The system is thermodynamically modelled with reference to the actual equipment. Experimental data at a comprehensive range of operative conditions are fitted then the characteristic equations for both the heat load of the ORDC and energy consumption of the condensing unit are obtained. The seasonal and climatic condition changes are accounted by integrating the available annual outdoor temperature data of the store location on the performance calculation. Relative error between the estimated energy consumption and experiment stays within ±20%. The constructed tool is capable of predicting the performance of multiple combinations of different ORDC types and can therefore be used for benchmarking, identifying energy conservation opportunities, and assessment of GHG emission.
AB - An annual energy performance evaluation method for open refrigerated display cabinets (ORDC) driven by CO2 heat pumps in supermarkets is established to predict the annual heat load, energy consumption, COP and total CO2 emissions. Significant condition variations that affect the system performance are considered. The system is thermodynamically modelled with reference to the actual equipment. Experimental data at a comprehensive range of operative conditions are fitted then the characteristic equations for both the heat load of the ORDC and energy consumption of the condensing unit are obtained. The seasonal and climatic condition changes are accounted by integrating the available annual outdoor temperature data of the store location on the performance calculation. Relative error between the estimated energy consumption and experiment stays within ±20%. The constructed tool is capable of predicting the performance of multiple combinations of different ORDC types and can therefore be used for benchmarking, identifying energy conservation opportunities, and assessment of GHG emission.
KW - Annual energy
KW - CO2 refrigerant
KW - Evaluation method
KW - Refrigerated display cabinet
KW - Supermarket
UR - http://www.scopus.com/inward/record.url?scp=85049867131&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049867131&partnerID=8YFLogxK
U2 - 10.18462/iir.gl.2018.1360
DO - 10.18462/iir.gl.2018.1360
M3 - Conference contribution
AN - SCOPUS:85049867131
T3 - Refrigeration Science and Technology
SP - 1061
EP - 1068
BT - 13th IIR Gustav Lorentzen Conference on Natural Refrigerants
PB - International Institute of Refrigeration
T2 - 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries
Y2 - 18 June 2018 through 20 June 2018
ER -
