Question

Question 4 The bottom of a mechanically polished pan, 0.3 m in diameter is maintained at 106°C by an electric heater to heat water. The water is at 1 atm and 100°C. 4.1 Determine the boiling regime. 4.2 Calculate the rate of heat transfer, stating any assumptions you have made. 4.3Determine the evaporation rate. (3) (18) (4) Use table of properties for water from Question 3. The surface tension for water at 100°C is 0.0589 N/m. Properties of saturated water Epansion Specific Heat Vaporization c, kg-K Enthalpy of Thermal Conductivity Prandt Saturation Pressure Density , kg/m Dynamic Viscosity , kg/m-s Coefficient , 1/K Number Pr k, W/m-H Temp. T. C Pt kPa Liquid Vapor Liquid Vapor hk/kg Liquid Vapon Liquid Vapor Liquid Vapor Liquid 0.01 0.6113 999.8 68 x 0.0048 2501 0.561 0.0171 1.7592 x 10 0.922 x 10 13.5 4217 000.008 0.0176 1.307 x 10-3 0.946 x 10- 0.0179 1.138 x 10- 0.959 x 10- 1.00 0.733 x 10-3 1 2276 999.7 9 45 10 0.0094 2478 4194 1862 0.580 1.7051 999 1863 0.589 15 0.0128 2466 4185 8.09 1.00 0.138 x 10- 1.00 0.247 10 1875 0.615 0.0189 0.798 x 10 1.001 x 10 5.42 1.00 0.294 x 10 607 0.01R6 0 891 10 0 987 v 10 5 6.14 3.169 g97 c 0.0231 2445 4180 1870 30 4.246 996.0 0.0304 2431 4178 0.0196 0.653x 10 1031 10- 3 0.0200 0.596 x 10- 1.046x 10- 3.91 2407 1895 0.631 7 384 g92 1 0.0512 4179 1 00 0.377 101 45 9.593 990.1 0.0655 2395 4180 1892 0.637 1.00 0.415 x 10-* 88. d183 0 649 09 9 484 10-3 1.00 0.517 x 10- 1.00 0.548 x 10 0.0212 0.467 x 10- 1.093 x 10- 60 983.3 0.1304 2359 4185 1916 0.654 0.659 0.0216 0.433 x 10 1.110 x 10- 2.99 19.94 2346 65 25.03 980.4 0.1614 4187 1926 2.75 31.19 0.1983 2334 0.0230 0.355x 10 1.159 x 10 2.22 0.0235 0.333 x 10-3 1.176 x 10- 2.08 1.00 0.653 x 10 1.00 0.670 x 10- 2309 0.3536 2296 80 47.39 971.8 0.2935 4197 1962 1977 0.670 85 57.83 968.1 4201 0.673 2270 4212 1 85 1.210 x 10- 1.00 0.716x 10-2 0.677 0.0246 0.297 x 10- 0.679 0.0251 0.282 x 10- 84 55 0 5045 961.5 2010 957.9 0.5978 2257 4217 1.227 x 10- 1.75 1.00 0.750 x 10 100 101.33 2029 2203 198 53 4244 2120 0.6830.0275 0.232 x 10 1.296x 10: 1.330 x 10 1.365 x 10 144 120 943 4 1.121 1.00 O.858 x 10 130 270.1 934.6 1.496 174 4263 2177 0.684 0.0288 0.213 x 10 1.33 1.24 1.02 0.970 x 10 1.01 0.913 x 10 140 361.3 921.7 1.965 2145 4286 2244 0.683 0.0301 0.197 x 10 sgeg99

Answer 1

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