Hello to everyone once again,

I posed a question similar to this and Otto S. was kind enough to steer me
in the right direction but I am looking for a bit more assistance if anyone
if familiar with cogeneration or just generator modeling in general. I need
to add a 75 kW co gen unit as an improvement, I was told that this is to be
modeled in a copy of my file and then compared to from the original. So I
went ahead and created a gas fired generator and added a sale meter and all
the appropriate rates, connected the heat output to the DHW loop, and the
model acts as if there is nothing there. My original and my cogen building
look almost identical in sim outputs.

Any help would be greatly appreciated. Below I?m pasting my BDL output that
relates to this

*14237* $ *********************************************************

*14238* $ ** **

*14239* $ ** Electric & Fuel Meters **

*14240* $ ** **

*14241* $ *********************************************************

*14242*

*14243* $ ---------------------------------------------------------

*14244* $ Electric Meters

*14245* $ ---------------------------------------------------------

*14246*

*14247* "Electric Meter" = ELEC-METER

*14248* TYPE = UTILITY

*14249* ..

*14250* "Cogen Meter" = ELEC-METER

*14251* TYPE = ELECTRIC-SALE

*14252* DEM-UNIT-INDEX = 1

*14253* COGEN-TRACK-MODE = MAX-OUTPUT

*14254* COGEN-TRACK-SCH = "Cust 1 Elec Season Sched"

*14255* ..

*14256*

*14257*

*14258* $ ---------------------------------------------------------

*14259* $ Fuel Meters

*14260* $ ---------------------------------------------------------

*14261*

*14262* "Nat. Gas Meter" = FUEL-METER

*14263* TYPE = NATURAL-GAS

*14264* ..

*14265* "Oil Meter" = FUEL-METER

*14266* TYPE = FUEL-OIL

*14267* ..

*14268*

*14269*

*14270* $ ---------------------------------------------------------

*14271* $ Master Meters

*14272* $ ---------------------------------------------------------

*14273*

*14274* "MASTER-METERS 1" = MASTER-METERS

*14275* MSTR-ELEC-METER = "Electric Meter"

*14276* MSTR-FUEL-METER = "Nat. Gas Meter"

*14277* SOURCE-FUEL-METE = "Oil Meter"

*14278* HEAT-FUEL-METER = "Oil Meter"

*14279* SUPP-FUEL-METER = "Nat. Gas Meter"

*14280* DHW-FUEL-METER = "Oil Meter"

*14281* ..

*14389* $ ---------------------------------------------------------

*14390* $ Electric Generators

*14391* $ ---------------------------------------------------------

*14392*

*14393* "Cogeneration" = ELEC-GENERATOR

*14394* TYPE = GAS-TURBINE-GENERATOR

*14395* CAPACITY = 65

*14396* MAX-RATIO = 1.15

*14397* HEAT-INPUT-RATIO = 3.22

*14398* ELEC-METER = "Cogen Meter"

*14399* EXH-LOOP = "DHW Plant 1 Res Loop (1)"

*14400* EXH-RCVR = 0.67

*14401* ..

* 1 * $LIBRARY-ENTRY GasTurbine-HIR-fPLR CURVE-FIT
GasTurbine Gen

* 2 * TYPE=QUADRATIC COEF=( 0.44297900, 0.39740000,
0.15696210)

* 3 * INPUT-TYPE COEFFICIENTS ..

* 1 * $LIBRARY-ENTRY GasTurbine-Exh-fPLR CURVE-FIT
GasTurbine Gen

* 2 * TYPE=QUADRATIC COEF=( 0.29562600, 0.49301940,
0.21135480)

* 3 * INPUT-TYPE COEFFICIENTS ..

* 1 * $LIBRARY-ENTRY GasTurbine-Cap-fPLR CURVE-FIT
GasTurbine Gen

* 2 * TYPE=LINEAR COEF=( 1.24000000,-0.00410000)

* 3 * INPUT-TYPE COEFFICIENTS ..

*14402*

*15812*

*15813* $ *********************************************************

*15814* $ ** **

*15815* $ ** Metering & Misc HVAC **

*15816* $ ** **

*15817* $ *********************************************************

*15818*

*15819* $ ---------------------------------------------------------

*15820* $ Equipment Controls

*15821* $ ---------------------------------------------------------

*15822*

*15823*

*15824*

*15825* $ ---------------------------------------------------------

*15826* $ Load Management

*15827* $ ---------------------------------------------------------

*15828*

*15829*

*15830*

*15831* $ *********************************************************

*15832* $ ** **

*15833* $ ** Utility Rates **

*15834* $ ** **

*15835* $ *********************************************************

*15836*

*15837* $ ---------------------------------------------------------

*15838* $ Ratchets

*15839* $ ---------------------------------------------------------

*15840*

*15841*

*15842*

*15843* $ ---------------------------------------------------------

*15844* $ Block Charges

*15845* $ ---------------------------------------------------------

*15846*

*15847* "Cust 1 Elec Uniform Blk1" = BLOCK-CHARGE

*15848* BLOCK-SCH = "Cust 1 Elec Season Sched"

*15849* SCH-FLAG = 1

*15850* BLOCK1-TYPE = ENERGY

*15851* BLOCKS-1 = ( 1 )

*15852* COSTS-1 = ( 0.1613 )

*15853* ..

*15854* "Custom Gas Uniform Blk1" = BLOCK-CHARGE

*15855* BLOCK-SCH = "Custom Gas Season Sched"

*15856* SCH-FLAG = 1

*15857* BLOCK1-TYPE = ENERGY

*15858* BLOCKS-1 = ( 1 )

*15859* COSTS-1 = ( 1.36 )

*15860* ..

*15861*

*15862*

*15863* $ ---------------------------------------------------------

*15864* $ Utility Rates

*15865* $ ---------------------------------------------------------

*15866*

*15867* "Custom Elec Rate" = UTILITY-RATE

*15868* TYPE = ELECTRICITY

*15869* ELEC-METERS = ( "Electric Meter" )

*15870* ENERGY-CHG = 0.24

*15871* BLOCK-CHARGES = ( "Cust 1 Elec Uniform Blk1" )

*15872* ..

*15873* "Custom Gas Rate" = UTILITY-RATE

*15874* TYPE = NATURAL-GAS

*15875* FUEL-METERS = ( "Nat. Gas Meter" )

*15876* ENERGY-CHG = 1.95

*15877* BLOCK-CHARGES = ( "Custom Gas Uniform Blk1" )

*15878* ..

*15879* "Custom Oil Rate" = UTILITY-RATE

*15880* TYPE = FUEL-OIL

*15881* FUEL-METERS = ( "Oil Meter" )

*15882* ENERGY-CHG = 2.29

*15883* ..

*15884* "Electric Sale Rate" = UTILITY-RATE

*15885* TYPE = ELECTRIC-SALE

*15886* ENERGY-CHG = 0

*15887* ELEC-SALE-METERS = ( "Cogen Meter" )

*15888* ..

*15889*

Thank you,

Alexander Czank

Energy Systems Analyst

R3 Energy Management Audit & Review LLC

Office: 914.909.3940 x107

Cell: 914.218.7779

Fax: 914.909.3941

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