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Code Manual for CONTAIN 2.0 - Federation of American Scientists

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4tmosphere Internal Ener~:<br />

Table 4-7<br />

Thermodynamic State Equations<br />

Ui = 3 m~h~(Ti) + mvhv(Ti,pv) + mlh~i,pi) - pivi<br />

k=l<br />

?OO1Internal Ener~:<br />

where<br />

up, = ‘p,ihj(Tp,i~pi)-‘i ‘p,i<br />

><br />

Ui = internal energy <strong>of</strong> gases, coolant vapor, and homogeneously dispersed<br />

liquid coolant in cell i;<br />

N gas = number <strong>of</strong> gases that are treated as ideal gases;<br />

m~ = mass <strong>of</strong> gas component k in cell i;<br />

h~(Ti) = specific enthalpy <strong>of</strong> ideal gas component k at temperature T,;<br />

Ti = atmosphere temperature;<br />

% = mass <strong>of</strong> coolant vapor;<br />

hv(Ti,Pv) = specific enthalpy <strong>of</strong> coolant vapor. See Section 3.2 <strong>for</strong> the expressions <strong>for</strong><br />

~ <strong>for</strong> the ideal and non-ideal equations <strong>of</strong> state;<br />

P, = coolant vapor partial pressure;<br />

4 = mass <strong>of</strong> homogeneously dispersed liquid coolant in the atmosphere;<br />

ht(TijPi) = specific internal energy <strong>of</strong> liquid coolant. See Section 3.2 <strong>for</strong> the<br />

expressions <strong>for</strong> h4<strong>for</strong> the ideal and non-ideal equations <strong>of</strong> state;<br />

Pi = atmosphere total pressure;<br />

Vi = free volume (cell volume - pool volume);<br />

Pp,i = pool volume.<br />

Rev O 4-46 6/30/97

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