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A steel bottle V = 0.1 m3 contains R-134a at 20°C, 200 kPa. It is placed in a deep freezer where it is cooled to -20°C. The deep freezer sits in a room with ambient temperature of 20°C and has an inside temperature of -20°C. Find the amount of energy the freezer must remove from the R-134a and the extra amount of work input to the freezer to do the process.
a rigid tank is divided into two equal parts by a partition. one part of the tank contains 3.1 kg of compressed liquid
what are the two possible arrangements for a concentric tube heat exchanger? for each arrangement what restrictions are
a bathroom door which is 0.91 m wide and 2.13 m high is equipped with a torsional spring and a torsional rotational
steam at 95 bar and 400 c is supplied in turbine. the condenser pressure is 0.035 bar. if the plant operates as a
Which exerts more pressure: 25 feet of Acetaldehyde with a specific gravity of 1.59 or 25 feet of water? How did you know? Calculate the pressure.
Determine the transfer functions from input voltage to angular velocity and from load torque to angular velocity for a PM DC motor rigidly connected to an inertial load. Assume resistance and inductance parameters Ra , La let the armature constant be..
air enters a counterflow cooling tower at a rate of 100 m3s at 30 degree c dbt and 40 relative humidity. air leaves at
The inclined manometer, shown in Fig. 2.73, is used to measure pressure. If the total length of mercury in the tube is L, find an expression for the natural frequency of oscillation of the mercury
a wet compression refrigeration cycle uses hfc-134a as the working fluid and operates between 75 f and 8 f. use a mass
(a) Draw and label a schematic of the system. (b) Determine the mass flow rate (kg/s) of water vapor neededand (c) the rate of exergy destruction (kW)
Find the natural frequencies of the cantilever beam carrying an end mass M shown in Fig. 12.34, using a one-beam element idealization.
Determine the heat transfer coefficient for laminar flow over this cylinder. First, at your discretion, select an available set of experimentally obtained data from the literature. Then, this would provide you with a set of Reynolds numbers.
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