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Assume that an actual compressor has the same exit pressure and specific heat transfer as the ideal isothermal compressor in Problem 7.27, with an isothermal efficiency of 80%. Find the specific work and exit temperature for the actual compressor.
Problem 7.27
A compressor is surrounded by cold R-134a, so it works as an isothermal compressor. The inlet state is 0?C, 100 kPa and the exit state is saturated vapor. Find the specific heat transfer and the specific work.
A sample of aggregates weighs 400 grams. After drying at 112oF, its weight was 398.5 grams and absorption is 10%. Determine the moisture content and the free moisture.
You are designing a new thermometer using Galinstan, an alloy of gallium, indium, and tin that is a liquid at normal living temperatures. The coefficcient of thermal expansion is 190*10^-6 (1/kelvin)
Draw the shear and moment diagrams for each member of the frame. Assume the joints at A,B and C are pin connected
Carnot engine working between a source temperature of T2 and sink temperature of T1 has efficiency of 25%. if the sink temperature is reduced by 20 degrees Celsius the efficiency is increased to 30%. find the source and sink temperature
Parallel pipes, fixed overall H, ?EGL or hl = 75'. Elevated Tank A water surface is at El 625, 3000' away is Tank B with free surface El 550 They are connected by a 12" dia cast iron pipe.
HOCL is added to water in a tank as a disinfectant. After equilibrium is reached it is found that the pH of the water in the tank is 8.2 and the gas phase partial pressure is the head space of the tank is 0.2E-7 atm.
Discuss the changes in moisture content and the effects of these changes on a piece of dimension lumber from the time the tree is cut, through its processing, and until it has been in service in a building for an entire year
How many syllables are in the word masonry
determine the composition of the vapor phase of this mixture. Saturation pressure of NH3 at 30°C is 1167.4 kPa.
Two 8-kg blocks A and B resting on shelves are connected by a rod of negligible mass. Knowing that the magnitude of a horizontal force P applied at C is slowly increased from zero
a pre-engineering base line was run down a very steep hill.rather than measure horizontaily down hill with steel tape
A large steel tower is to be supported by a series of steel wires; it is estimated that the load on each wire will be 19,000N. Determine the minimum required wire diameter assuming a factor of safety 5 and that the yield strength of the steel is 900M..
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