The General Energy balance equation is:(adsbygoogle = window.adsbygoogle || []).push({});

∑EN_{in}- ∑EN_{out}+ E_{gen}= E_{st}(in rate form- don't know how to put the dot above)

I know that E_{st}is 0 when the system operates at Steady State Steady Flow (SSSF).

I have 2 formulas for ΔE in "Q-W = ΔE"

1) ΔE = ΔU + ΔKE + ΔPE

2) ΔE = m[h_{2}- h_{1}+(V_{2}-V_{1})^{2}/2 + g(z_{2}-z_{1})]

How do I know which one to use in which scenario?

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# Thermo - Simple Energy balance equation

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