Chapter 10 Boiling and Condensation10-77Water is boiled at Tsat= 100°C by a chemically etched stainless steel electric heater whose surface temperature is maintained at Ts= 115°C. The rate of heat transfer to the water, the rate of evaporation of water, and the maximum rate of evaporation are to be determined.Assumptions1Steady operating conditions exist. 2Heat losses from the heater and the boiler are negligible. PropertiesThe properties of water at the saturation temperature of 100°C are (Tables 10-1 and A-9) Water, 100°C115°CSteam 100°Cρσlvl====957 90600 0589175....kg / mkg / mN/mPr33hfglpl=×⋅=⋅°−2257 100 282 10421733J/kgkg m / sC J/kgCμ.Also, 0.0130 and n= 1.0 for the boiling of water on a chemically etched stainless steel surface (Table 10-3). Note that we expressed the properties in units specified under Eq. 10-2 in connection with their definitions in order to avoid unit manipulations.
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This note was uploaded on 01/24/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.