AME 230 Lecture Notes - Lecture 2: Exergy, Diesel Cycle
16 Mar 2016
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Page 1 of 5 - today 8:4 8 am. Nothing happens in this universe without a lack of equilibrium. Generally we care about a pressure or temperature imbalance. Exergy is measuring how far something is from dead state/equilibrium with the dead state, kj/kg exergy >= 0 always because you don"t have to add work to get to equilibrium. Page 2 of 5 - today 8:4 9 am. Intensity of solar radiation on earth: about 1000 w/m^2 in space: about 1400 w/m^2. Plants are green because they absorb energy from the sun and if they were black they would burn, reaping the maximum photovoltaic voltage without destroying themselves. Homework: difference between air standard and cold air standard analysis air standard: cold air standard: u2 - u1 = cv * (t2 - t1 ) using 300k to get cv. Dual cycle: some heat addition is constant volume and some is constant pressure, break up the heat addition into two parts.
