skip to main content
Idioma:

Automotive exhaust gas flow control for an ammonia–water absorption refrigeration system

Rêgo, A.T. ; Hanriot, S.M. ; Oliveira, A.F. ; Brito, P. ; Rêgo, T.F.U.

Applied thermal engineering, 2014-03, Vol.64 (1-2), p.101-107 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

Texto completo disponível

Citações Citado por
  • Título:
    Automotive exhaust gas flow control for an ammonia–water absorption refrigeration system
  • Autor: Rêgo, A.T. ; Hanriot, S.M. ; Oliveira, A.F. ; Brito, P. ; Rêgo, T.F.U.
  • Assuntos: Absorption refrigeration ; Applied sciences ; Automotive components ; Automotive engineering ; Automotive engines ; Control systems ; Dynamical systems ; Energy ; Energy. Thermal use of fuels ; Engines and turbines ; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc ; Exact sciences and technology ; Exhaust ; Exhaust emissions ; Flow control ; Heat transfer ; Internal combustion engine ; Refrigeration ; Refrigerators ; Theoretical studies. Data and constants. Metering
  • É parte de: Applied thermal engineering, 2014-03, Vol.64 (1-2), p.101-107
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
    ObjectType-Article-1
    ObjectType-Feature-2
  • Descrição: A considerable part of the energy generated by an automotive internal combustion engine is wasted as heat in the exhaust system. This wasted heat could be recovered and applied to power auxiliary systems in a vehicle, contributing to its overall energy efficiency. In the present work, the experimental analysis of an absorption refrigeration system was performed. The exhaust system of an automotive internal combustion engine was connected to the generator element of an absorption refrigeration system. The performance of the absorption refrigerator was evaluated as a function of the supplied heat. The use of a control strategy for the engine exhaust gas mass flow rate was implemented to optimize the system. Exhaust gas flow was controlled by step-motor actuated valves commanded by a microcontroller in which a proportional-integral control scheme was implemented. Information such as engine torque, speed, key temperatures in the absorption cycle, as well as internal temperatures of the refrigerator was measured in a transient regime. The results indicated that the refrigeration system exhibited better performance when the amount of input heat is controlled based on the temperature of the absorption cycle generator. It was possible to conclude that, by dynamically controlling the amount of input heat, the utilisation range of the absorption refrigeration system powered by exhaust gas heat could be expanded in order to incorporate high engine speed operating conditions. •An absorption refrigerator was driven by automotive exhaust gas heat.•A system for controlling the refrigeration system heat input was developed.•Excessive exhaust gas heat leads to ineffective operation of the refrigerator.•Control of refrigerator's generator temperature led to better performance.•The use of exhaust gas was possible for high engine speeds.
  • Editor: Kidlington: Elsevier Ltd
  • Idioma: Inglês
Links
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.