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A gasoline engine is converted to run on propane. Assume the propane enters the engine at 25?C, at the rate 40 kg/h. Only 90% theoretical air enters at 25?C such that 90% of the C burns to form CO2, and 10% of the C burns to form CO. The combustion products also include H2O, H2 and N2, exit the exhaust at 1000 K. Heat loss from the engine (primarily to the cooling water) is 120 kW. What is the power output of the engine? What is the thermal efficiency?
superheated steam can be cooled by injecting liquid water into it and this process is termed desuperheating. a flow of
An Otto cycle and a Carnot cycle working between the same maximum and minimum temperature limits does not have the same efficiency, nor does a Rankine and the corresponding Carnot cycle have the same efficiency.
the sphere of mass m1 travels with an initial velocity v1 directed as shown and strikes the sphere of mass m2. for a
four tug boats are having a contest to see who is strongest. each boat attaches a rope to a very strong metal ring.
One easy way to measure diffusion coefficients is the diaphragm cell shown in Fig. 2.2-4. These cells consist of two well-stirred volumes separated by a thin porous barrier or diaphragm. In the more accurate experiments, the diaphragm is often a sint..
for other properties fixed in a rakine cycle raising the condenser temperature causes what changes in the work and heat
helium in an ideal diesel cycle is compressed from 4 l to 0.25 l and then it expands during the constant pressure heat
Calculate the net cycle work in kJ assuming air is an ideal gas with constant specific heats.
an open feedwater heater operates at steady state with liquid water entering at inlet 1 at 50 degrees celsius and 1
low level heat energy is exhausted continually to a large body of water at the rate of 22mjhour. assuming the lake
steam flows through a horizontal adiabatic throttle which controls the flow to 25.0 ft3s and then through an adiabatic
the unit cells of several orthorhombic crystals are described below. what is the bravais lattice of each and how do you
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