EXPERIMENTAL ANALYSIS OF AN ABSORPTION REFRIGERATION CYCLE OPERATING IN TRANSIENT CONDITIONS / ANÁLISE EXPERIMENTAL DE UM CICLO DE REFRIGERAÇÃO POR ABSORÇÃO OPERANDO EM REGIME TRANSIENTE

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

The present work is related to an experimental analysis of an absorption refrigeration cycle operating in transient regime, leading to the study of the techcnical feasibilty for the application of absorption refrigeration cycles in automotive air conditioning systems. In such system, waste heat from the exhaust or cooling systems acts as the heat source for the cycle. This heat source is typically variable in power and temperature. The work is divided din three parts. First, the steady state performance of the cycle, operating with an electrical resistance as the heat source, is studied. In the second part of the work, an electrical blower simulates the flow of exaust gases from an internal combustion engine. If compared with traditional vapor compression cycles for automotive applications, absorption refrigeration cycles have the advantage of not requiring mechanical power from the engine, as well as presenting less environmental impact and ease of maintainance. Power and rotational speed may vary rapidly and considerably in internal combustion engines. To cope with a varying heat source, the use of a static regenerator is studied in the third part of the work. This use confirmed the expectations of having temperature and power variations considerably attenuated.

ASSUNTO(S)

absorption automotive air conditioning ammonia refrigeracao automotiva water refrigeration cycle absorcao ciclos de refrigeracao amonia agua

ACESSO AO ARTIGO

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