During a process, a system loses 35 Btu of energy via heat transfer, gains 51 Btu of energy through work, receives 10.5 Btu of energy through mass flowing through the inlet, and experiences a net increase of energy of 15.2 Btu. What is the amount of energy lost from flow through the outlet during the process?
Given: Q = -35 Btu, W = -51 Btu; Emassflow, in = 10.5 Btu; ?E = 15.2 Btu
What will be an ideal response?
?E = Q – W + Emassflow, in - Emassflow,out, so
Emassflow, out = Q – W + Emassflow, in - ?E = -35 Btu – (-51 Btu) + 10.5 Btu – 15.2 Btu = 11.3 Btu
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