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Multistack - Trane

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Scenario 1<br />

Chiller Cooling = 0.6 kw/Ton @ $0.11/kwh<br />

= $0.55/100 MBTU<br />

Boiler Heating = $1.10 THERM Natural Gas @ 95% Efficiency<br />

= $1.45/125 MBTU<br />

Total = $2.00<br />

Scenario 2<br />

Economizer Cooling = 100 MBTU Free Cooling (Outside<br />

Air)<br />

Boiler Heating = $1.10 THERM Natural Gas @ 95%<br />

Efficiency<br />

= $1.45/125 MBTU<br />

Total = $1.45<br />

5/16/2012<br />

17

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