Performance Analysis of an R744 Supermarket Refrigeration System Integrated with an Organic Rankine Cycle-Reference-Cited by-同舟云学术

Performance Analysis of an R744 Supermarket Refrigeration System Integrated with an Organic Rankine Cycle

Published:2023-11-07 Issue:22 Volume:16 Page:7478
ISSN:1996-1073
Container-title:Energies
language:en
Short-container-title:Energies

Author:

Sengupta Ayan¹^ORCID,Gullo Paride²^ORCID,Dasgupta Mani Sankar¹^ORCID,Khorshidi Vahid³^ORCID

Affiliation:

1. Smart Building Lab, Department of Mechanical Engineering, BITS, Pilani 333031, Rajasthan, India

2. Department of Mechanical and Electrical Engineering, University of Southern Denmark (SDU), 6400 Sønderborg, Denmark

3. Danfoss A/S, 6430 Nordborg, Denmark

Abstract

The energy and economic performance of a transcritical R744 booster supermarket refrigeration system with and without parallel compression and integrated with an organic Rankine cycle (ORC) was investigated. The results obtained were compared with those of a transcritical R744 booster supermarket refrigeration system with and without parallel compression and those of a conventional R404A direct expansion (DX) system. Nine different locations, namely Copenhagen (Denmark), Paris (France), Athens (Greece), New Delhi (India), Phoenix and Miami (US), Madrid (Spain), Bangkok (Thailand) and Riyadh (Saudi Arabia), were considered. It was discovered that the ORC is effective only at ambient temperatures higher than 27 °C when operating without parallel compression and 28 °C when operating with parallel compression. By using the heat recovered from the gas cooler to fuel the ORC, the latter was found to be capable of covering between 4% and 24% of the electricity demand of the R744 system in warm and hot climates (without parallel compression). The simple payback period of the additional investment associated with the ORC was found to be between 1.4 and 2.5 years in warm climate locations, while the same was found to be less than about 0.5 years in locations experiencing hot climatic conditions.

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Link

https://www.mdpi.com/1996-1073/16/22/7478/pdf

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