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What is the thermal and mechanical efficiency for this engine when used as heat pump and refrigerator with the following propties;
Temperature difference (with respect to 21° C): Refrigerator: -4 K (reservoir: +6 K) Heat pump: +13 K (reservoir: -1 K)
Power varies (1_4)W
RPM varies (1000_650)
Generator voltage=6 V
R134a flowing at 12 m/s enters a 25 mm diameter tube at a quality of 15%, at 36 0C and exits the tube at 10 bar as a saturated liquid. Determine (a) the mass flow rate of the R134a in kg/s, (b) the velocity of the R134a at the exit in m/s and (c) the..
consider air in a piston-cylinder assembly. initially the air is at p1 2bars and t1 600k . the air is compressed
you are interested in determination of a steady state temperature profiles in a cylinder conducting the electrical
A cylindrical specimen of some metal alloy 8.7 mm in diameter is stressed in tension. A force of 1390 N produces an elastic reduction in specimen diameter of 0.0041 mm. Calculate the elastic modulus (in GPa) of this material if its Poisson's ratio is..
Using the data shown in Callister Figure 7.19, draw an approximate stress-strain curve for the 1040 steel at 0% cold work and at 30% cold work, clearly indicating the yield strength, ductility, and tensile strength of the steel before and after cold-..
Calculate the range of typical machining time for face milling a 10-in. long, 2-in. wide cutter with a depth of cut of 0.1-in , the cutter has 10 teeth .for the following work piece materials :1.low-carbon steel 2.titanium alloys 3.alumminum alloys 4..
What is the discharge revised discharge pressure (guage pressure) of the compressor ? Is the assumption of change in temperature valid for calculating the discharge pressure of the compressor ?
Water is to be supplied at a rate of 5000 kg/s to a hydro-electric generator located at the bottom of a lake at a height h. If the efficiency of the turbine-generator is 75% and of the generator 95%;
Calculate the pipe diameter D in inches to 2 decimal places required to give the fluid velocity of 4 ft/sec in the following situation: The formula for the velocity is given by: velocity =Flow rate / Pipe Area And the flow rate = 21 gpm and the Pipe ..
What kind(s) of mechanism (include barker classification if applicable) might be best to use for the following applications? Converting a rotating gear motion into the intermittent motion of a second hand on a watch. Converting the motion of a motor ..
Two slender rods of negligible weight are pin-connected at A and attached to the 18-lb block B and the 80-lb block C as shown. The coefficient of static friction is 0.55 between all surfaces of contact. Determine the range of values of P for which..
consider a combined gass steam power plant that has a net power output of 450 mw. the pressue ratio of the gas turbine
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