Explain briefly how the design of a condensing gas boiler differs from a non-condensing one. How come heat engines are more efficient when run at high temperatures? Explain how the bursting of cycle tubes is an adiabatic process. Is it an isochoric process? It...
Calculate the work performed by a mole of gas during an isothermal expansion quasi-static of initial volume v_i and final volume v_f when the equation of state is pv = R (1 - B/v); with R constant and B = f( ) a function of . one mole o...
Introducing hard-to-ignite fuels such as methane, biogas, or sewage gas and modifying the combustion process in SI-Engines to reach diesel-like efficiency (combustion of diluted mixtures or introducing diffusion-controlled spark ignited combustion schemes at high compression ratios) demands novel strateg...
Typically, the wall is set as an adiabatic wall, ignoring the heat dissipation caused by the heat conduction of the wall—that is, the side wall effect. (2) The particle size of the mixture has only been covered in a few number of published studies when paired with the DEM method. The...
(NOx) emissions. Co-firing ammonia with an industrial by-product gas (with CH4and CO being the main combustible materials) is a cost-effective and convenient method of improving the combustion characteristics of ammonia, but attention still needs to be paid to the NOxgeneration. Currently, the ...
Friedel [17] developed a correlation derived from an extensive dataset of 25,000 observations collected from adiabatic flow within channels, each having a hydraulic diameter (Dh) exceeding 1 mm. The factors fvofvo and floflo are calculated according to Equation (3), representing the friction fact...
Walls of the nozzles are made of cast iron, and therefore, they were assumed as impermeable. The entire transient process lasted very short time period as it will be shown in subsequent Section 4. Hence, the walls of the nozzles were assumed adiabatic which was crucial due to thermodynamic...
When an alloy specimen is deformed at high strain rates, the dissipation of the instantaneous power will cause a temperature rise due to the effect of adiabatic heating [30,31]. According to the actual temperature measured by a thermocouple attached to the compressive specimen, it is found that...