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A "friend" asks you to construct the phase diagram for a new binary alloy of A and B. The clues are: (i) A and B are completely immiscible in each other and no solid solutions exist in the diagram.
An insulated mixing chamber receives 4 lbm/s R-134a at 150 lbf/in.2, 220 F in a line with low velocity. Another line with R-134a as saturated liquid 130 F flows through a valve to the mixing chamber
Assume that the Mercury 50 operates on an ideal Brayton cycle (no regeneration), and that the working fluid is air with variable specific heat, determine i) the thermal efficiency, ii) power output.
Consider a well 12 inches in diameter. There are 1000 feet of 10x4 inch collars and 9000 feet of 5x4.26 inch drill pipe. The bit has 3 nozzles of diameter 13/32 inch.
A refrigerator removes 1.5 kJ from the cold space using 1 kJ work input. How much energy goes into the kitchen and what is its coefficient of performance?
200 kPa, and that the compression and power stroke efficiencies are 90%. Using the provided engine data, determine the charge mass (grams).
A flow of liquid glycerine flows around an engine, cooling it as it absorbs energy. The glycerine enters the engine at 140 F and receives 13 hp of heat transfer. What is the required mass flow rate
Calculate the mass of the fluid present, the value of n in the first process and the net work done on or by the fluid in the cycle. Sketch the cycle on the p-V diagram.
Two flows of air both at 200 kPa of equal flow rates mix in an insulated mixing chamber. One flow is at 1500 K and the other is at 300 K. Find the irreversibility in the process per kilogram of air
The maximum stress developed in the spring is 150,000 psi. What is the required diameter of the torsional helical spring, the initial angular deformation of the spring and the number of active coils
A supply of steam at 100 kPa, 150°C is needed in a hospital for cleaning purposes at a rate of 15 kg/s. A supply of steam at 150 kPa, 250°C is available from a boiler and tap water at 100 kP
What are the temperature on the left edge of the wall, the maximum temperature in the wall, and the heat flux q'' in kw/m^2 going through the right side of the plate?
Air at 20 degree C, 40% RH is mixed adiabatically with air at 40 degree C, 40% RH in the ratio of 1 kg of the former to 2 kg of the latter on a dry basis.
It is known that the compressor consumes 1.2kW of electricity at this operating condition. Determine 1) heat rejection rate to the surrounding; 2) cooling rate; and 3) the COP of the refrigerator?
What do you understand by closed packed planes and closed packed direction in the arrangement of atoms? Justify their presence in many metals? State the effect of grain size on mechanical behavior o
An air conditioner can produce a 120 kJ/min cooling effect while rejecting 2.5kW of heat. What is its COP and the electricity it consumes?
An air compressor takes air in at the state of the surroundings 100 kPa, 300 K. The air exits at 400 kPa, 200°C at the rate of 2 kg/s. Determine the minimum compressor work input.
A heat pump has a coefficient of performance of 2 using a power input of 2 kW. Its low temperature is To and the high temperature is 80oC, with an ambient at To. Find the fluxes of exergy associate
The heat engine does maximum work equal to 600kJ. Determine the heat supplied to the heat engine, heat rejected to the heat sink, and the temperature of the heat sink.
If the cylinder head is milled so that the original clearance is reduced to 0.4 cm, by what percentage will the engine efficiency change if the engine retains the original stroke?
A single metallic crystal is oriented such that the normal to the slip plane and slip directions are at angles of 50 and 40 degrees respectively, with the tensile axis.
We want to achieve a concentration of 0.5%wt of carbon at a depth of 0.2 mm below the surface of the slab of a metal. The initial concentration of carbon in the metal is 0.1wt%.
Water at 10 degrees C flows throug a smooth 60-mm-diameter pipe with an average velocity of 8m/s. Would a layer of rust of height 0.005mm on the pipe wall protrude through the viscous sub layers? E
Consider a system operating a power cycle between thermal reservoirs at temperatures Th and Tc where Th>Tc. Using 1st and 2nd law of thermodynamics, derive the maximum thermal efficiency possibl
A diesel engine has a state before compression of 95 kpa, 290 k, a peak pressure of 6000 kpa, and a maximum temperature of 2400 K. Find the volumetric compression ratio and the thermal efficiency.