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The temperature of the mixture is 50C and the total pressue is 2 MPa. The partial pressure of the water vapor is 5 KPa. Calculate the heat transfer when the contents of the tank are cooled to 10C
The upper capor compression refrigeration system (VCRS) uses water as its working fluid. Determine the mass flow rate of R-134a and water in their respective cycles.
An open feed water heater incorperated with the steam cycle operates at a pressure of 0.6 MPa. The condenser pressure is 20 KPa. Determine the mass flow rate ratio of air to stream.
The compression ration in an air-standard otto cycle is 8. At the begining of the compression stroke the pressure is 14.7 Lbf/in^2. Determine mean effective pressure.
Draw Mohr's Circle for a point on top of the cross-section of the beam where the maximum bending moment occurs. Determine the principal stresses and draw an element showing the principal planes.
The temperature of the parallel surfaces at the both ends of the rod is 34 oC. An air flow at 24 oC is crossing over the rod at 1 m/s. Determine the temperature of the rod at 0.12 m from the fixed s
Find the mass flow rate that can generate 85 MW of power and determine the thermal efficiency of your system. The condenser is cooled by running the cooling water from a nearby lake through the tubes
Calculate (a) the power required by the compressor in kW (b) the isentropic compressor efficiency (c) the rate of heat transferred to the interior of the house in kW.
A heat engine absorbes 25 MW from a 400 C combustion chamber and rejects 15 MW to the atmosphere at 30 C. Find the actual and Carnot thermal efficiencies of this engine.
Draw a schematic of the ideal Rankine cycle and the corresponding T-s diagram. Determine the R-134a mass flow rate needed for this cycle to produce 750 kW of power.
For fluid flow through a tube with a uniform surface heat flux, how does the mean temperature of the fluid vary with distance from the tube entrance in (a) the entrance region and (b) the fully deve
As manifested by the number of transfer units, are there limitations to the foregoing trends? What penalty is associated with increasing the size of a heat exchanger? With increasing the overall heat
What are the two possible arrangements for a concentric tube heat exchanger? For each arrangement, what restrictions are associated with the fluid outlet temperatures?
What effect do finned surfaces have on the overall heat transfer coefficient and hence the performance of a heat exchanger? When is the use of fins most appropriate?
Discuss the key motivations leading to the three classes of composite materials: polymermatrix composites (PMC), metal-matrix composites (MMC) and ceramic-matrix composites (CMC).
If the volumetric flow rate of the air stream is 80 m^3/,min, calculated the amount of liquid water removed and the total heat and the total heat transfer through the water removal.
Draw a diagram of the system, and state necessary assumptions. Specify inlet and outlet states for the pump, boiler, turbine and condenser.
Obtain a relation for the variation of pressure in the troposphere (a) by ignoring and (b) by considering the variation of g with altitude. The troposphere extends to an altitude of 11 km.
Determine the volume flow rate and the density of the gas at the inlet and the volume flow rate at the exit using a) the ideal gas equation b) the generalized compressibility charts.
Determine a) overall efficiency of the pump-motor unit and b) the pressure difference between the inlet and the exit of the pump. Draw the process diagram.
Using the real efficiency value of 8%, calculate the output of a geothermal power plant that processes 50 lb/s of groundwater at 180 ºF and discharges it on the surface at 70 ºF.
What is the pressure of gase's molecules inside spherical balloon that has a radius of .1 m at temperature of 27 C. if the number of molecules of the gas is three times as the number of Avogadro.&nb
The following fluids in a 2-in schedule 40 pipe. If the temperature is in F, do it in the english system. If the temperature is in C, do it in the metric system. Calculate the reynolads number of W