Question

decrease. Give two reasons. 9.62. The heating value of a fuel oil is to be measured in a constant-volume bomb calorimeter. The bomb is charged with oxygen and 0.00215 lbm of the fuel and is then sealed and immersed in an insulated container of water. The initial temperature of the system is 77.00°F. The fuel-oxygen mixture is ignited, and the fuel is completely consumed. The combustion products are CO2(g) and H2O(v). The final calorimeter temperature is 89.06°F. The mass of the calorimeter, including the bomb and its contents, is 4.62 lbm, and the average heat capacity of the system (C) is 0.900 Btu/(Ib. "F). (a) Calculate All (Btu/lb... oil) for the combustion of the fuel oil at 77°F. Briefly explain your calculation. (b) What more would you need to know to determine the higher heating value of the oil?

Answer 1

using given data and first law of thermodynamics we can find the required variables

s Girem till Mpua +0.00015 bin Mays 4.69 Abm Ti=77°F Tp – 99-06°F = 0.9 BTU Hbf Co o from First Low of the modynamic Quel = Q syn mDU. = May Cu(To-Ti) DU == 4.62xoog (89.86-77) 0.00215 DUe = 93323.47 B10/kom must ne value To determine Know lepent Heat of wete at goven. temp. higher hesting value repourisction of

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