Local stability of an endoreversible heat pump with linear phenomenological heat transfer law working in an ecological regime | Zendy

Xiaohui Wu | Zendy; Lei Chen | Zendy; Y.T. Ge | Zendy; Fengrui Sun | Zendy

Open Access

Local stability of an endoreversible heat pump with linear phenomenological heat transfer law working in an ecological regime

Author(s) -

Xiaohui Wu,

Lei Chen,

Y.T. Ge,

Fengrui Sun

Publication year - 2012

Publication title -

scientia iranica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.299

H-Index - 51

eISSN - 2345-3605

pISSN - 1026-3098

DOI - 10.1016/j.scient.2012.10.012

Subject(s) - heat pump , heat transfer , phase portrait , steady state (chemistry) , working fluid , perturbation (astronomy) , thermodynamics , mechanics , stability (learning theory) , heat flux , heat sink , materials science , environmental science , physics , chemistry , bifurcation , computer science , heat exchanger , nonlinear system , quantum mechanics , machine learning

Based on the optimal ecological performance parameters of a heat pump with linear phenomenological heat transfer law between working fluid and heat reservoirs, the local stability analysis of the endoreversible heat pump working in an ecological regime is studied. The steady state of the heat pump working at the maximum ecological function is steady. After a small perturbation, the system state exponentially decays to steady state with either of the two relaxation times. The effects of temperatures of heat reservoirs and heat transfer coefficients on the local stability of the system are discussed. Distribution information of phase portraits of the system is obtained. It is concluded that both the energetic properties and local stability of the system should be considered for designing the real heat pumps

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