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A Quantitative Examination of the Efficiency of a Biogas-Based Cooling System in Rural Regions
Version 1
: Received: 19 May 2023 / Approved: 22 May 2023 / Online: 22 May 2023 (03:43:46 CEST)
A peer-reviewed article of this Preprint also exists.
Saka, K. A Quantitative Examination of the Efficiency of a Biogas-Based Cooling System in Rural Regions. Processes 2023, 11, 1983. Saka, K. A Quantitative Examination of the Efficiency of a Biogas-Based Cooling System in Rural Regions. Processes 2023, 11, 1983.
Abstract
This study investigates the efficiency of a biogas-powered cooling system through the utilization of energy and exergy calculations. Biogas, which can be generated and stored in small-scale plants as needed, serves as a viable fuel source for absorption cooling systems. The present research focuses on the biogas consumption of a triple-effect absorption cooling system, specifically designed to supply a fixed cooling load of 100 kW under varying operational conditions. The study highlights the COP (Coefficient of Performance) and ECOP (Exergetic Coefficient of Performance) values of the system, along with the exergy destruction rates of its individual components, at the optimal temperatures of operation. Furthermore, to determine the necessary biogas consumption, the study explores the establishment of dedicated farms for various animal species, ensuring an adequate number of animals for biogas production. The findings reveal a COP of 1.78 and an ECOP of 35.4% at the optimized operating temperatures. The minimum mass flow rate of biogas is determined to be 0.0034 kg/s, facilitating the operation of the boiler with a methane content of 65%. The study concludes that a total of 290 head of cattle is required to generate the annual biogas consumption necessary for the cooling system. Also, number of the cattle is enough to establish 284 biogas plants in Bursa province in Türkiye.
Keywords
Efficiency analysis; biogas-powered cooling system; energy and exergy analysis; small-scale plant; absorption cooling system; triple-effect; ECOP; animal species; methane content
Subject
Engineering, Mechanical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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