Two experiments What comes to your mind? Experiment #1 © Volume changing?Mass?Density?Pressure?Work? Energy? Liquid nitrogen?Why liquid?Temperature?T-V relation of gaseous air?Property?Cold?Warm?Heat Transfer? Volume changing?Work?Thermal Energy<->Work? Experiment #2 Startup (transient)-steady?Volume changing?Work output?Electricity?Continuous running>cycle?Energy conversion?Combustion? Friction?Efficiency?Why high temperature? 上游充通大 February 26,2019 5 SHANGHAI JLAO TONG UNIVERSITYFebruary 26, 2019 5 Two experiments Volume changing? Mass? Density? Pressure? Work? Energy? Liquid nitrogen? Why liquid? Temperature? T-V relation of gaseous air? Property? Cold? Warm? Heat Transfer? Volume changing? Work? Thermal Energy<->Work? What comes to your mind? Startup (transient) – steady? Volume changing? Work output? Electricity? Continuous runningcycle? Energy conversion? Combustion? Friction? Efficiency? Why high temperature? Experiment #2 Experiment #1