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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
An exergy analysis of combined cooling and power systems using absorption chillers: a comparative approach
Submission Author:
Matheus Protasio de Lima , SC
Co-Authors:
Matheus Protasio de Lima, João Damasceno Xavier Neto, Edson Bazzo
Presenter: João Damasceno Xavier Neto
doi://10.26678/ABCM.ENCIT2020.CIT20-0243
Abstract
Combined cooling and power has been appointed as a good alternative to supply energetic demands in several commercial sectors. In addition, natural gas has became a feasible source to power these systems. In this study, four cogeneration scenarios are evaluated considering power and cold generation in an effort to point out the most technically workable one. First and second laws of thermodynamics are applied. The scenarios consider internal combustion engine and microturbine as prime movers with a nominal power of 1200 kWe. For the refrigeration system, steam and hot water fired chillers are studied. In general, the results indicate the scenario composed by engine and hot water absorption chiller as the best alternative. This configuration has presented 88,2% and 49,9% of thermal and exergetic efficiencies, respectively.
Keywords
Natural gas cogeneration, Gas engine, Gas Turbine, absorption chiller
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