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A power cycle operates between a reservoir at temperature T and a lower temperature reservoir at 280oK. At steady state the cycle develops 40 kW power while rejecting 1000 kJ/min of energy by heat transfer to the cold reservoir. Determine the minimum theoretical value of T in oK.
a refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor-compression refrigeration
Use steam tables to compute the total volume, total enthalpy, and total entropy of 1kg of water at 100o C, half by weight of which is steam and the remainder is liquid water.
a solid circular rod with a diameter of d 18mm. the bar is ade of an aluminum alloy that has an elastic modulus of e
a steel strut is pinned at both ends. the strut has a solid circular cross section and is 6 m long. the strut
Propane gas enters a continuous adiabatic heat exchanger' at 40°C and 250 kPa and exits at 240°C superheated steam at 300°C and 5.0 bar enters the exchanger flowing counter currently to the propane and exits as a saturated liquid at the same press..
r-134a is throttled from 1200kpa and 40oc to 200kpa. it is known that heat of 5kjkg is lost from r-134a to the
identical 9.00 microc charges are fixed to adjacent corners of a square. what charge magnitude and algebraic sign
Beryllium has an HCP unit cell for which the ratio of the lattice parameters c/a is 1.568. If the radius of the Be atom is 0.1143 nm, (a) determine the unit cell volume, and (b) calculate the theoretical density of Be.
a car at point a is 100m away from point b along a circular track distance measured along the tracks perimeter and
Refrigerant 134a at 700 kPa and 40oC is expanded adiabatically in a closed system to 60 kPa. Determine the work produced, in kJ/kg, and final enthalpy for an isentropic expansion efficiency of 80.
the hydrogen spectrum has a red line at 656 nm and a blue line at 434 nm. what is the firstnbsporder angular
a cantilever beam with round cross section is loaded at the tip with a transverse force of 1000 lb. the beam is also
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