Integrated supermarket refrigeration for very high ambient temperature
Abstract
This paper analytically investigates and compares the performance of a proposed ‘all-natural’ NH3/CO2 cascaded booster system to a conventional R404A direct expansion system as well as to an ‘all-CO2’ system with multi-ejector unit and flooded evaporator. Performance comparison is made based on the annual combined COP and Life Cycle Climate Performance (LCCP) for operation in selected cities of Middle East and India. Our results show that in extreme warm climate, the energy efficiency of the proposed configuration exceeds that of all-CO2 configuration by a maximum of about 12.23% and the total emissions are lower by up to 11.20%. However, the all-CO2 multi ejector system performs better in cold and mild warm climate. In the NH3/CO2 cascade, the high temperature NH3 system can be designed to be isolated from the accessible locations of the supermarket. Here, the work presented is expected to help adoption of natural refrigerants such as CO2 and NH3 for commercial application in extreme warm climate conditions prevailing in many cities of Middle East and India.
- Authors:
-
[2];
[2];
[4];
- BITS Pilani, Rajasthan (India)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Royal Institute of Technology (KTH), Stockholm (Sweden)
- Jaume l Univ., Castellon (Spain)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1494002
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energy (Oxford)
- Additional Journal Information:
- Journal Name: Energy (Oxford); Journal Volume: 165; Journal Issue: PA; Journal ID: ISSN 0360-5442
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 29 ENERGY PLANNING, POLICY, AND ECONOMY; CO2; NH3/CO2 cascade; Supermarket; Integrated; Natural; Warm climate
Citation Formats
Purohit, Nilesh, Sharma, Vishaldeep, Sawalha, Samer, Fricke, Brian A., Llopis, Rodrigo, and Dasgupta, Mani Sankar. Integrated supermarket refrigeration for very high ambient temperature. United States: N. p., 2018.
Web. doi:10.1016/j.energy.2018.09.097.
Purohit, Nilesh, Sharma, Vishaldeep, Sawalha, Samer, Fricke, Brian A., Llopis, Rodrigo, & Dasgupta, Mani Sankar. Integrated supermarket refrigeration for very high ambient temperature. United States. https://doi.org/10.1016/j.energy.2018.09.097
Purohit, Nilesh, Sharma, Vishaldeep, Sawalha, Samer, Fricke, Brian A., Llopis, Rodrigo, and Dasgupta, Mani Sankar. Sun .
"Integrated supermarket refrigeration for very high ambient temperature". United States. https://doi.org/10.1016/j.energy.2018.09.097. https://www.osti.gov/servlets/purl/1494002.
@article{osti_1494002,
title = {Integrated supermarket refrigeration for very high ambient temperature},
author = {Purohit, Nilesh and Sharma, Vishaldeep and Sawalha, Samer and Fricke, Brian A. and Llopis, Rodrigo and Dasgupta, Mani Sankar},
abstractNote = {This paper analytically investigates and compares the performance of a proposed ‘all-natural’ NH3/CO2 cascaded booster system to a conventional R404A direct expansion system as well as to an ‘all-CO2’ system with multi-ejector unit and flooded evaporator. Performance comparison is made based on the annual combined COP and Life Cycle Climate Performance (LCCP) for operation in selected cities of Middle East and India. Our results show that in extreme warm climate, the energy efficiency of the proposed configuration exceeds that of all-CO2 configuration by a maximum of about 12.23% and the total emissions are lower by up to 11.20%. However, the all-CO2 multi ejector system performs better in cold and mild warm climate. In the NH3/CO2 cascade, the high temperature NH3 system can be designed to be isolated from the accessible locations of the supermarket. Here, the work presented is expected to help adoption of natural refrigerants such as CO2 and NH3 for commercial application in extreme warm climate conditions prevailing in many cities of Middle East and India.},
doi = {10.1016/j.energy.2018.09.097},
journal = {Energy (Oxford)},
number = PA,
volume = 165,
place = {United States},
year = {Sun Sep 16 00:00:00 EDT 2018},
month = {Sun Sep 16 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
A Theoretical Comparative Study of CO2 Cascade Refrigeration Systems
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Thermodynamic Analysis of a CO2 Refrigeration Cycle with Integrated Mechanical Subcooling
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