Letters

摘要

To the Editor: A quick search on the Internet verified that the adiabatic flame temperature of jet fuel burned in air is about 3,140℉. The adiabatic flame temperature of natural gas burned in air was listed from 3,308 to 3,542℉, and hydrogen was listed at 3,650℉. It appears that aviation and industrial gas turbines are approaching the plateau of the highest possible inlet temperatures burning carbon/hydrogen-based fuels (April cover story, "Fahrenheit 3,600").During graduate school and then later with a major gas turbine OEM, I conducted performance optimization studies on advanced gas turbine cycles. My optimization studies (and related research I reviewed in the process) indicated that the efficiency of a simple-cycle gas turbine improved most when both the pressure ratio and inlet temperature were increased.