Performance evaluation method of CO2 heat pump driven refrigerated display cabinets

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication13th IIR Gustav Lorentzen Conference on Natural Refrigerants
Subtitle of host publicationNatural Refrigerant Solutions for Warm Climate Countries, Proceedings
PublisherInternational Institute of Refrigeration
Pages1061-1068
Number of pages8
Volume2018-June
ISBN (Electronic)9782362150265
DOIs
Publication statusPublished - 2018 Jan 1
Event13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries - Valencia, Spain
Duration: 2018 Jun 182018 Jun 20

Other

Other13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries
CountrySpain
CityValencia
Period18/6/1818/6/20

Keywords

  • Annual energy
  • CO2 refrigerant
  • Evaluation method
  • Refrigerated display cabinet
  • Supermarket

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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  • Cite this

    Redo, M. A., Giannetti, N., Tojo, K., Ohno, K., Yamaguchi, S., & Saito, K. (2018). Performance evaluation method of CO2 heat pump driven refrigerated display cabinets. In 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries, Proceedings (Vol. 2018-June, pp. 1061-1068). International Institute of Refrigeration. https://doi.org/10.18462/iir.gl.2018.1360