scholarly journals (151)Theoretical Study on the Tempera- ture Distribution in Self-Heat-Exchanger-Type Reaction Chambers X Some Supplementary Remarks to IX.

1951 ◽  
Vol 54 (5) ◽  
pp. 303-305
Author(s):  
Shinjiro Kodama ◽  
Kenich Fukui ◽  
Hideo Tanaka
Keyword(s):  
Heat Exchanger ◽  
Theoretical Study ◽  
Type Reaction ◽  
Reaction Chambers

A Numerical Investigation of the Cooling Effect of Compressed Natural Gas Throttling on Engine Delivery Ratio

1999 ◽  
Vol 121 (1) ◽  
pp. 121-128
Author(s):  
Y. Yacoub ◽  
L. Marbun ◽  
R. Bata
Keyword(s):  
Heat Exchanger ◽  
Natural Gas ◽  
Thermodynamic Model ◽  
Theoretical Study ◽  
Operating Conditions ◽  
Cooling Effect ◽  
Delivery Ratio ◽  
Pressure Regulation ◽  
Compressed Natural Gas ◽  
Fuel Delivery

A theoretical study was conducted to investigate the cooling effect of throttling compressed natural gas during the pressure regulation process. The concept of using this effect in cooling down the induction air was investigated. A thermodynamic model was developed for a typical fuel delivery system used on a vehicle fueled with compressed natural gas. The model was based on a set of integral conservation laws applied to each component of the fueling system. Several heat exchanging arrangements between the throttled gas and the inlet air were examined. The effect of the added heat exchanger on engine delivery ratio was examined for different engine sizes as well as for different operating conditions. An increase of 1 to 2.5% in engine delivery ratio was predicted due to the added heat exchanger.

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