Performance evaluation of transcritical CO2 refrigeration system for simultaneous heating and cooling applications

A. M. Guruchethan; Vishaldeep Sharma; M. P. Maiya; Armin Hafner

doi:10.1007/s12046-023-02269-y

Performance evaluation of transcritical CO₂ refrigeration system for simultaneous heating and cooling applications

A. M. Guruchethan, Vishaldeep Sharma, M. P. Maiya, Armin Hafner

Building Equipment Research Group

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The transcritical CO₂ refrigeration system used for simultaneous heating and cooling applications is proven to be energy efficient. The dairy industry is one such application. The dairy industry requires heating for pasteurization, high temperature (HT) treatment of pipelines, and clean-in-place (CIP). It requires cooling for milk chilling and storing it at 4°C for long shelf life. Currently, NH₃ refrigeration systems are used for cooling, and coal/oil/natural gas-fired boilers are used for heating. Therefore, in this study, the performance evaluation of transcritical CO₂ systems for simultaneous heating and cooling demands in the dairy industry is carried out for ambient temperatures ranging from 25 to 46°C. A simple transcritical CO₂ system with and without an internal heat exchanger (IHX) and a booster system are evaluated and compared in terms of performance and energy savings. Results indicate that the booster system performs better than the other two systems. Energy savings of up to 29% can be achieved by utilizing the transcritical CO₂ system in the dairy industry instead of currently used systems.

Original language	English
Article number	212
Journal	Sadhana - Academy Proceedings in Engineering Sciences
Volume	48
Issue number	4
DOIs	https://doi.org/10.1007/s12046-023-02269-y
State	Published - Dec 2023

Funding

The work presented here is part of the BHAVAN Fellowship sponsored by the Indo-US Science and Technology Forum (IUSSTF) and the Department of Science and Technology, Govt. of India. The authors also acknowledge the support from ongoing projects: SPARC, sponsored by MHRD, Govt. of India, and INDEE+, sponsored by MFA, Govt. of Norway, coordinated by NTNU, Norway.

Funders	Funder number
INDEE+
Norges Teknisk-Naturvitenskapelige Universitet
Midwest Forage Association
Department of Science and Technology, Ministry of Science and Technology, India
Indo-US Science and Technology Forum
Ministry of Education, India

Keywords

Booster system
IHX
NH
R744
dairy
energy savings

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1007/s12046-023-02269-y

Cite this

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