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1. The one-dimensional plane wall of Figure 3.1 is of thickness L = 75 mm and thermal conductivity k = 5 W/m · K. The fluid temperatures are Too,1 = 200°C and Too,2 = 100°C, respectively. Using the minimum and maximum typical values of the convection heat trans- fer coefficients listed in Table 1.1, determine the mini- mum and maximum steady-state heat fluxes through the wall for (i) free convection in gases, (ii) free con- vection in liquids, (iii) forced convection in gases, (iv) forced convection in liquids, and (v) convection with phase change.
2. Using the values of density for water in Table A.6, calculate the volumetric thermal expansion coefficient at 300 K from its definition, Equation 9.4, and compare your result with the tabulated value.
calculate the steady state heat transfer rate in jmm2bulls through a rod of copper 10 mm thick if the temperature
an internal combustion engine with clearance volume of 60 cm3 and compression ratio of 8.5 is modeled using the
Steam at 3 MPa,400 degree Celsius is expanded to 30 kPa, 92 percent isentropic efficency.The mass flow rate is 2 kg/s. Determine (a)the power output.
surface geostrophic velocity 0.5 ms density 1026kgm3 gravity 9.8ms ring radius 50km. you take velocity measurment
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1. a 500 ml cylindrical mug is filled level with the top of the mug with 90degc water. what is the water level relative
in cooling situations where the desired temperature range is large two refrigeration cycles can be stacked to create a
A 1000 ft long metal duct is used to transport heated air from one side of a plant to another. The duct is 24in high by 36in wide. The heated air's temperature at the inlet of the duct is 170 F and the volumetric flow rate is 15,000 CFM. If the ambie..
a full revolution press has 100 rpm flywheel rotation.it has two handed trip devices mounted 20 inches from point of operation how many engagement points on the flywheel would be nessary to make this machine safe?
a refrigerator freezer compartment is maintained at a temperature of -15degf by removing heat at a rate of 4500 btuhr.
Calculate the velocity v of the collar as it hits the stop at B if it is elevated from rest at A by the action of the constant 40-N force in the cord. The cord is guided by the small fixed pulleys.
an office building is found to gain 200000 btuh of heat on a hot summer day over the period from 6 a.m. to 6 p.m. the
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