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This paper describes the experimental study of a hybrid ejector-based air-conditioning system using R134a. The proposed system can be operated under different modes. A series of experiments have been conducted to investigate the effect of the generating, condensing and evaporating pressure on the system performance and entrainment ratio. The results indicate that: the performance of hybrid system...
The research on energy saving of air conditioning mainly base on isolated device,and air conditioning is complex system composed of multiple device, with the changes in the environment of the air conditioning system load changes, how to determine the energy consumption of different load composed air conditioning system, the lowest standard device problems such as how to run the most reasonable, rely...
In this paper, a simple, yet accurate hybrid modeling technique for condensers is presented. The method starts with fundamental physical principles but captures only few key operational characteristic parameters to predict the system performances. The advantages of the methods lie that linear or non-linear least squares methods can be used to determine those key operational characteristic parameters...
A neural control scheme for variable air volume (VAV) air-conditioning system is proposed. The neural network is trained online by the simultaneous perturbation stochastic approximation (SPSA) method instead of the standard back-propagation algorithm. The closed-loop stability of the proposed control scheme is guaranteed based on the conic sector theory. The new control scheme provides the desired...
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