On a gas turbine engine, a high outside air temperature can cause high turbine inlet temperature, low mass/weight of air flow through the turbine, and which of the following conditions?
• Relationship between air temperature, air density, and mass flow in gas turbines • How compressor work changes when inlet air is hotter and less dense • Effect of high outside air temperature on overall engine efficiency and power output
• If the outside air is hotter and less dense, what happens to the amount of oxygen entering the engine for the same intake volume? • When the compressor receives less dense air, does it have to work harder or easier to reach the same pressure ratio? Why? • How would these changes logically affect the energy required in the compression stage and the resulting exhaust gas temperature?
• Be clear on how air density decreases as temperature increases (at the same pressure). • Think about how a reduced mass flow rate impacts compressor loading and required work to achieve the same pressure ratio. • Check which options are consistent with high turbine inlet temperature plus low mass flow, and eliminate any that conflict with that trend.
No comments yet
Be the first to share your thoughts!