Chapter 1 Basics of Heat Transfer1-43Water is heated in an insulated tube by an electric resistance heater. The mass flow rate of water through the heater is to be determined. Assumptions1 Water is an incompressible substance with a constant specific heat.2 The kinetic and potential energy changes are negligible, ΔΔkepe≅≅0 . 3 Heat loss from the insulated tube is negligible. Properties The specific heat of water at room temperature is Cp= 4.18 kJ/kg·°C (Table A-9). AnalysisWe take the tube as the system. This is a control volumesince mass crosses the system boundary during the process. We observethat this is a steady-flow process since there is no change with time at any
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This note was uploaded on 01/14/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.