A simplified modular dynamic model of a gas-gas cross-flow shell-and-tube heat exchanger and its experimental validation are carried out in this paper. The is used to analyze the transient response of a combustion exhaust gas-air industrial heat exchanger by evaluating the time variations of exchanger outlet air temperature due to step variations on both the temperature and mass flow rate of the combustion gas at the exchanger inlet. The developed mathematical model is validated by means of experimental data measured on a test plant which was especially realized and instrumented. The computational analysis provided numerical values of response times that are consistent with the experimental values, showing how the mathematical model is adequate for the analysis of the heat exchanger transient behavior.
Experimental Validation of a Gas-Gas Heat Exchanger Computational Dynamic Model
SPINA, Pier Ruggero;
1996
Abstract
A simplified modular dynamic model of a gas-gas cross-flow shell-and-tube heat exchanger and its experimental validation are carried out in this paper. The is used to analyze the transient response of a combustion exhaust gas-air industrial heat exchanger by evaluating the time variations of exchanger outlet air temperature due to step variations on both the temperature and mass flow rate of the combustion gas at the exchanger inlet. The developed mathematical model is validated by means of experimental data measured on a test plant which was especially realized and instrumented. The computational analysis provided numerical values of response times that are consistent with the experimental values, showing how the mathematical model is adequate for the analysis of the heat exchanger transient behavior.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
