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An electric hot plate is maintaned at a temperature of 350 and is used to keep the solution just boiling at 95. The solution is cointaned in an enamelled cast -iron vessel of wall thickeness 25mm and enamel thickness 0.8mm. The heat transfer coefficient for the boiling solution is 5.5kw/m^2k, and the thermal conductivities of cast iron and enamel are 50 and 1.05w/mk respectively. Calculate the resistance to the heat transfer for unit area, and the rate of heat transfer per unit area.
your boss asks you to calculate the flow through a natural gas pipeline. since it is 26 inches inner diameter it is
molecules that are of density row180 kgm3 and spe- cific heat cp 3000 jkg k have an initial relaxed length of l2nm.
consider a steam rankine cycle with superheat. the maximum temperature and pressure are 540 c and 60 bar and the
A small boat hangs from two davits, one of which is shown in the figure. The tension in line ABAD is 82 lb, determine the moment about C of the resultant force exerted on the Davit.
derive a relationship between partial molar excess enthalpy activity coefficient of species i and temperature. assume
water vapor was flowing through the pipeline at 08 mpa pressure and 250 degc temperature. a cylinder-piston mechanism
air was heated by an electric resitance heater in an insulated piston-cylinder device. the piston weight remained
a heat exchanger at an industrial plant uses river water to condense 2x105 kgh of steam from saturated vapor to
how to calculate the adiabatic flame temperatures from the injection pressures during choked conditions.
a cylindrical workpart 125 mm in diameter and 900 mm long is to be turned in an engine lathe. cutting conditions are v
Friction between the piston and cylinder wall can be neglected because the process occurs so slowly. For the air, determine the initial and final pressures in kPa and the boundary work for the process in kJ.
multi-stage flash distillation is used to desalinate seawater so it is fit for human consumption. a flash distillation
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