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A refrigerant leases a condenser us a saturated liquid at a temperature of 25 °C, and is throttled to a pressure of l.143 bar where it enters the evaporator. Using the properties of refrigerant given as Table 3.4, calculate the dryness fraction of the refrigerant sapour entering the evaporator.
A 75 kg metal block initially at 80 degrees Celsius is dropped into a well insulated tank that contains 50 kg of water at 1 atm pressure and 20 degrees Celsius. The metal block and water are allowed to reach thermal equilibrium at a temperature of 35..
1. Two pounds of air initially at 200°F and 50 lbf/in.2 undergo two processes in series: Process 1-2: Isothermal to p2 5 10 lbf/in.2
A Pitot-static probe connected to a water manometer is used to measure the velocity of air. If the deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.2..
an instrument to measure the acc. of gravity on mars is made of a spring from which hangs a mass of 0.24 kg. at a place
Hydrogen gas at 35ºC and unknown pressure (State 1) enters a steady, insulated system which has no work interaction with the surroundings. Half of the gas exits at 2 bars and 90ºC (State 2) and the other half exits at 2 bar and -20ºC (State 3).
fe transforms from a bcc to fcc crystal structure at around 911 degrees c. fcc fe has an atomic radius .129 nm. what is
Steels and low carbon iron alloys are by far the most common metals in industrial use. The main element of these materials is iron (Fe). Fe has a BCC crystal structure. Show for Fe the unit cell edge length a and the atomic radius R are related throu..
Due to drought, the water level of a 10-acre pond is five feet below normal. If you wanted to fill the pond to normal capacity by using a hose connected to your kitchen faucet, how long would it take to fill the pond? Select an appropriate unit of ti..
consider a steam power plant that operates between the pressure limits of 10 mpa and 20 kpa. steam enters the pump as
the effort required to maintain a scanning electron microscope is known to increase by a fixed percentage each year. a
Briefly describe the phenomenon of passivity. Name two common types of alloy that passivate. Why does chromium in stainless steels make them more corrosion resistant in many en- vironments than plain carbon steels?
A single stream exits the mixing chamber at 66°F, 1 atm, and 60% relative humidity, with a volumetric flow rate of 1500 ft3/min. Determine for stream 2 the relative humidity.
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