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EModel: A New Energy Optimization Modeling Language
December 14, 2010
Energy and climate pressures in todays society have created a demand to use energy more eciently
and intelligently. In this chapter we present
St e am De live re d (Klbs)
44951 6207 5
8 2 30
7 8 019 6
2011 CT/DB Fuel Burn Estimates
2005 Actual (mCFT)
Ownership Demarcation Reference Only Not Reflection of Contract
University of Florida Co-Generation and Steam
255,000 lb per hour capability With
Full Duct Firing
(220,000 lb per hour UF delivery capability
with Duct Firing
Looking on Amazon you find a 1 RT 20 SEER ductless system for $999 and a similar 1RT 13 SEER unit for $718. If energy
costs $0.20/kWh and the unit is used 2000 hours a year at full load how much energy is saved by using the 20 SEER unit?
How long will t
Question 5: Draw the Delta and Wye 3 phase circuit diagrams.
Question 6: If the line current of a Delta circuit is 100A what is the phase current?
For Delta Circuits:
Question 7: What is the line voltage if the phase voltage is 120V of a 3 Phas
6) A F32T8 fluorescent bulb that has a rated output of 2800 Lumens is installed in a fixture with a ballast that has a BF (Balla st
Factor) of 0.88. What is the light output of the light?
FVro[lm]=Luminous Flux Rated Output (rated total o
A warehouse replaces 500 400W Metal Halide bulbs with 50W ballasts (the ballasts consume an
extra 50W) with a florescent high bay system that contains 4 F54T5HO bulbs with the fixture
consuming a total 234W. How much money is saved a year ($6/kVa/month
H5 Lighting Solutions
The demand reduction is
DR = 20 (100 26)[W ] = 1.5kW ;
The demand cost savings are
DS = DR 12[month] $6 = $108.
The energy cost savings
ES = DR 8760[hours] $0.12[/kW h] = $1576.
The total savings therefore are
S = $1684.
A company is implementing an air leak program. They measures that it takes 20 minutes to go from 120 psig to 60 psig
when no equipment is running. If the system has a 6000 gallon air receiver (storage) how many CFM is going to leaks?
What is the percen
To ensure high availability a company has a fully redundant dust collection system (only one unit is used at a
time with the other used as backup). The system consists of two 100HP 20,000 CFM systems. Neglecting motor
efficiency and VFD efficiency what
H08-2: How much cooling power (in RT) does a 3kW (4 HP, 10,239 Btu/h) ideal R134a chiller (the compressor is 3kW)
provide if the evaporator runs at -80F and the condenser runs at 50F? Draw the complete refrigeration cycle on the
chart and write the enthal
2011 UF COGEN STEAM DEMAND SUMMARY
C ond Ret urn 70#
Boiler 5 Boiler 4 T ot al
C ond Ret urn 70#
Boiler 5 Boiler 4 T