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The hot-water needs of a household are met by a 60-L electric water heater whose heaters are rated at 1.6 kW. The hot-water tank is initially full with hot water at 80 C. Somebody takes a shower by mixing a constant flow of hot water from the tank with cold water at 20 C at a rate of 0.06 kg/s. After a shower period of 8 min, the water temperature in the tank is measured to drop to 60 C. The heater remained on during the shower and hot water withdrawn from the tank is replaced by cold water at the same flow rate. Determine the mass flow rate of hot water withdrawn from the tank during the shower and the average temperature of mixed water used for the shower.
Subject a piece of steel to a case hardening process in which carbon is forced by diffusion through a layer on the surface of the piece. For this purpose, the piece of steel will be placed in a carbon-rich atmosphere in a special furnace.
Steady State Thermal analysis can be use to simulate and obtain results to support the design optimization / objectives
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a flow of 30.5 kgmin of water from a hot water tank at 51oc is mixed with a 29.1 kgmin flow of 20oc water. determine
I would expect somthing like the requirement to execute the equation, please explain each term in the equation with its engineering units.
a four cylinder four stroke diesel engine has a bore of 212 mm and a stroke of 292 mm. at full load at 720 revmin the
steam enters a nozzle with a low velocity at 300f and 30 psi and leaves as saturated vapor at 10 psi. there is heat
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