Thermal Response of Automotive Hydrocarbon Adsorber Systems

1999 ◽  
Vol 122 (1) ◽  
pp. 112-118 ◽  
Author(s):  
G. C. Koltsakis ◽  
A. M. Stamatelos
Keyword(s):  
Complex System ◽  
Heat Transfer ◽  
Mathematical Model ◽  
Pressure Distribution ◽  
Thermal Response ◽  
Cold Start ◽  
Geometric Parameters ◽  
Response Behavior ◽  
Gasoline Engines ◽  
Flow And Heat Transfer

Modern hydrocarbon adsorbers for gasoline engines are promising candidates for cold start emission control. In this paper, the flow and heat transfer in a typical complex system, comprising a “barrel type” adsorber and two conventional catalysts is studied. A mathematical model is developed and applied for the computation of the flow and pressure distribution, as well as transient heat transfer in the system. The model is aimed at understanding and quantifying the particular thermal response behavior of hydrocarbon adsorber systems. Illustrative results with variable geometric parameters under realistic input conditions are presented. [S0742-4795(00)01701-4]

Experimental Research on Performance of Heat Transfer and Pressure Drop for Primary Surface Recuperator With Mini Channels

2011 ◽  
Author(s):  
Hugen Ma ◽  
Hui Gao ◽  
Wenjing Tu
Keyword(s):  
Heat Transfer ◽  
Mathematical Model ◽  
Pressure Drop ◽  
Experimental Research ◽  
Transfer Factor ◽  
Flow And Heat Transfer ◽  
Good Consistency ◽  
Mini Channels ◽  
Performance Of Heat Transfer ◽  
The Mathematical Model

Based on the single blow technique, experimental research was conducted for the performance of heat transfer and flow drop for six test cores with cross corrugated (CC) or corrugated undulated (CU) primary surfaces for different geometries. After the mathematical model was established for heat transfer under the condition of single blow, a matching numerical solution was obtained for different NTU. The correlations of hear transfer factor j and friction factor f were obtained for three types of cross corrugated primary surfaces (crossed angle 45∼75°) with a range of Re = 120∼800 and three types of corrugated undulated primary surfaces (crossed angle 52.5∼67.5°) with a range of Re = 200∼1200. Hydraulic diameters of all heat transfer surfaces are from 1.2∼1.48mm. Analysis on the flow and heat transfer for cross corrugated and corrugated undulated primary surfaces was made based on the comprehensive evaluating factor j/f. The experimental results were compared to references with good consistency. The regressive errors of correlations were less than 16%.

A mathematical model of glass flow and heat transfer in a platinum downspout

1993 ◽  
Vol 36 (7) ◽  
pp. 1789-1797 ◽  
Author(s):  
Robert Ducharme ◽  
Phiroze Kapadia ◽  
Fred Scarfe ◽  
John Dowden
Keyword(s):  
Heat Transfer ◽  
Mathematical Model ◽  
Flow And Heat Transfer
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