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5 kg/s of steam at 950 kPa and 650oC, with an enthalpy of 3809.6 kJ/kg and leaves at 50oC and 10 kPa, with an enthalpy of 2592.9 kJ/kg.
If the heat capacity of the cooling water is 4.2 J/mol°C, the inlet temperature is 25°C, and the outlet temperature cannot be greater than 40°C, what is the flow rate of the cooling wate
What is the maximum temperature (i.e., the adiabatic flame temperature) that can be achieved by burning canola oil in a 25:1 air:fuel mass ratio?
There are 3,785 cm3 in a gallon. a. How many kg are in one gallon of canola oil? b. How much energy is released by burning a gallon of canola oil?
100 mol/s of propane enters a turbine at 350 K and 30 bar. It leaves the turbine at 1 bar. You can assume that Cp=9R.
Determine the rate of heat transfer from the stack assuming a) there is no wind and b) the stack is exposed to 20 km/h winds.
Using this expression as well as dR=(R^2/(E*h))dp, derive an expression for R in terms of the inlet radius R0, mu, the flow rate Q, E, tube thickness h, and the axial position within the tube, x.
If I MeV of energy is deposited in an anthracene crystal and 2000 scintillation photons are produced, what is the scintillation efficiency?
Assume constants m=.001kg, Cv=.8, k=1.4, T1=300K, and T3=2000K. Plot work as a function of compression ratio r and determine the r that yields maximum work.
If the turbine has an isentropic efficiency of 60%, determine the work out of the turbine and the exit temperature of the fluid and quality if applicable.
Develop the explicit finite difference formulation for this wall for the case of no heat generation but with the indicated solar flux.
Determine the amount of heat per unit mass leaving the condenser. Find the quality at the entrance to the condenser. Calculate the net work output. Find the thermal efficiency of the cycle.
The superheated water vapor at 50 kPa and 100°C is compressed isentropically in a closed system to 4 MPa. Determine the final temperature of the water and the specific work required, win , in kJ
Determine the mass fractions of alpha and beta phases. Determine the mass fractions of primary alpha and eutectic micro-constituents. Determine the mass fraction of eutectic alpha.
High pressure steam is at 8Mpa and 600C it passes through an isentropic turbine and the pressure drops to 6MPa and 350C. Find the total power output of all three turbines.
Determine the horizontal force required (a) to start the car moving, (b) to keep the car moving at a constant speed. Neglect rolling resistance between the wheels and the rails.
Hot combustion gases enter a gas turbine at 1 Mpa and 1500 k at a rate of 0.5 kg/s the gases exit at 0.2 MPA and 900 k if heat is input at 15 kj/s find the Carnot efficiency and the power of the gas
How many fissions occurred? (b) Three months after the accident, what is the rate (W) at which energy is released by all the fission products left in the building?
A boiler shell is 1.5 in diameter and has plates of thickness 10mm. If the efficiency of the longitudinal joint is 80% then calculate the working pressure assuming a safe working pressure of 50 N/mm
(a) How much 235^U is consumed per year (in g/y) to produce enough electricity to continuously run a 100 W light bulb? (b) How much coal (in g/y) would be needed (coal has a heat content of about 12
If the volumetric efficiency if found to be 110% when the engine is running at 3400 rpm and at standard air conditions, determine the mass flow of intake air in kg/min.
Determine. a. The velocity of cylinder A as it strikes the ground, b. the total distance that block B moves before coming to rest.
You should determine the velocity as a function of r, R. viscosity, and pressure gradient. Draw the velocity distribution and the shear stress distribution vs. r for this flow.
What are the measured (Tg) values for (i) polyethylene, (ii) polyvinyl chloride, and (iii) polymethyl methacrylate? Are the (Tg) values constants?
Specify the number of degrees of freedom at each of the points- that is, the number of externally controllable variables that need be specified to completely define the system.