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Why we need to avoid processes excessively large or excessively small thermodynamic driving forces(differences in temperature,pressure,composition)? Why we want to minimize the use of combustion? Why we do not heat refregerated streams with a stream at a temperature above ambient? For heat exchanger networks why we consider pinch method and exeegy related methods?
steam is the working fluid in an ideal reheat rankine cycle. steam enters the first-stage turbine at 8.0 mpa 480oc and
The system shown anchors a stanchion of cable-suspended roof. If the tension in cable AB is 900 kN, what are the tensions in cables EF and EG?
Calculate the static thrust of the turbojet engine having mass flow 88lbm/sec the ratio of air and fuel mass flowing into the turbojet is 50:1 and it's exhaust plane the velocity is 1640 ft/sec and pressure is same as ambient pressure?
nitrogen at 100c and 600 kpa expands in such a way that it can be approximated by a polytropic process with n 1.2.
steam at 80 bar 440oc enters a turbine at 1operating at steady state with a volumetric flow rate of 236 m3min. twenty
capacitor with capacitance 6.00 microf is connected to a resistor with r 780 o in series and an emf source of 25.0 v
Find the enthalpy of the steam discharged into the condenser and the thermal efficiency of the cycle.
water is the working fluid in a vapor power cycle. the pressure and temperature at the turbine inlet are 1600 psia and
fixed costfc 2000000 variable costvc 120.005q total costtc fc vc x q unit sales price p250nbspa determine the values
the piston has a mass of 4kg and cross-sectional area of 35cm^2. A compressed spring above the piston exerts a force of 60N on the piston. if the atmospheric pressure is 95kPa, determine the pressure inside the cylinder.
Estimate the mass of the gas in the tank in kg assuming the gas behaves as an ideal gas. If the gas warms up to 35 deg C as it sits in the sun all day, what would the pressure rise to?
air enters a device operating at steady state at 18 bar and 572 k and leaves at 1.5 bar and 520 k with a volumetric
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