This paper presents a steady-state model that is useful for predicting the performance of centrifugal liquid chillers over a wide range of operating conditions. The model employs an elemental NTU-E methodology to model both the shell-and-tube condenser and the flooded evaporator. The approach allows the change in heat transfer coefficients throughout the heat exchangers to be accounted for, the...

Selective catalytic reduction (SCR) technology plays a crucial role in flue gas denitration. The nonuniform distribution of catalyst inlet parameters causes the NO concentration at outlet, thus affecting accuracy ammonia injection. Regarding this issue, paper describes impacts velocity and temperature on both confidence measured single measuring point outlet denitration efficiency, which can pr...

this thesis looked at the effect of clay and silt soil blocking the heat transfer area of the radiator and its effect on the engine coolant through the conduct of experiments and a mathematical model developed. the results indicated that the percentage area covered resulted in a proportional increase of the inlet and outlet temperatures of the coolant in the radiator. the mathematically model d...

This article presents the results of study heat transfer in a ex-changer where working fluid is crude oil prepared for desalination, and thermic agent re-circulating heavy gasoline fraction. Firstly, Reynolds numbers have been computed using temperatures flow rates fluids as input variables. Then, general regression neural network multi-layer perceptron were used outlet estimation inlet The bes...

In this paper, generalized predictive control based on particle swarm optimization (PSO-GPC) was applied to the control of linear Fresnel distributed collector system, of which the purpose was to reduce the system error in the dynamic process. The main goal of solar thermal power generation system control was to control the collector outlet temperature in a certain range. Using the the rate of ...

The objective of this paper is to optimize defrost/demist performance in a vehicle. However, to initiate the problem, it is necessary to have a thorough understanding of flow behavior within the compartment. So a full-scale model of passenger compartment has been modeled and the air stream from very near to the windshield up to back of the compartment has been analyzed applying computational fl...