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Refrigerant 134a at 140 F (60C) and 125 psia (840 kPa) enters the condenser of a chiller at 800lb/h (.1 kg/s) and exits as a saturated liquid at the same pressure. If the cooling water enters at 85F (30C) and leaves at 104F (40C) what is the mass flow rate of the cooling water? Assume that the water is a compressed liquid at 30 psia (205 kPa).
a gas in a piston-cylinder assembly undergoes two processes in series. from state 1 to state 2 there is energy transfer
a beam of 2-mev photons with intensity 108 cm-2s-1 irradiates a small sample of water. a how many photons-water
ethanol c2h5oh is burned with air in a sie with a fuel-rich mixture. consider mon 89 and ron 107 for this fuel.
determine diameter of a circular rod of ductile material with a fatigue strength ,e=280 Mpa. Add a tensile yield strength of 350 Mpa. The member is subjected to a varying axial load from 700 kN to -300kN. Assume Kt=1.8 and factor of safety=2.
consider a roof of a house of thickness l 20 cm thermal conductivity k 1 wm k and emittance of the external surface
a construction vehicle of mass 30 mg is used to unload sand in a horizontal line through a port on the bottom of the
determine the work done in lifting a 250-lb refrigerator 4 ft vertically into a van. alternatively the refrigerator
a ball of diameter 0.05 m and specific gravity 0.5 is dropped from a height of 1 m into a large pool of water.
an adiabatic air compressor is to be powered by an adiabatic steam turbine. steam enters the turbine at 12.5 mpa and
a space is at a temperature of 75 f 24 c and the relative humidity is 45 percent. find a the partial pressures of the
Your rich godfather has offered you a choice of one of the three following alternatives: $10,000 now; $2,000 a year for eight yeaers; or $24,000 at the end of eight years
Show that the total true strain is the sum of the true strains in each step, that is the true strains are additive. Show that using engineering strains, the strain for each step cannot be added to obtain the total strain.
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