2. Evaluate the following energy calculation The total enthalpy (H) is a propert
ID: 1860494 • Letter: 2
Question
2. Evaluate the following energy calculationThe total enthalpy (H) is a property that results from combining the internal energy (U) and flow energy (PV) for a fluid, H = U + PV. What is the value of the total enthalpy in BTU if the internal energy (U) is 1103.5 BTU, the pressure is 85 psi and the total volume is 5.17 ft3? Really straight forward just watch the its. 2. Evaluate the following energy calculation
The total enthalpy (H) is a property that results from combining the internal energy (U) and flow energy (PV) for a fluid, H = U + PV. What is the value of the total enthalpy in BTU if the internal energy (U) is 1103.5 BTU, the pressure is 85 psi and the total volume is 5.17 ft3? Really straight forward just watch the its.
Explanation / Answer
Internal Energy, U = 1103.5 BTU
Pressure, P = 85 psi
Volume, V = 5.17 ft^3
Now, PV = 85X5.17= 439.45 psi-ft3 = 439.45 x 0.185 = 81.298 BTU
( 1 psi-ft3 = 0.185 BTU)
Enthalpy, H = U + PV = 1103.5 + 81.298 = 1184.798 BTU
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