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NC-2009 EAp2:Minimum Energy Performance

Energy Rates for CHP used Project

Profile picture for user simonsiva22
SAMY Chamy
Enginneer
T&T Green
LEEDuser Basic Member
9 thumbs up

Dear All Our Project have CHP (2 CNG Generator 500Kw with VAM Chillier 100TR) what is rate we use for BASE Case and Design Case For Design case we use the Fuel(CNG) cost invested to run a Generator to create Electricity Which rate can we use for Base case as per LEED Reference guide the Back up energy or Electricity cost may be considered as base case cost but I have a doubt in that base case cost arriving 1.we use diesel generator for Electricity back up can we arrive the electrical cost consumption using the specific fuel consumption from catalogue But the cost of electricity is varying for both a cases because of the Specific fuel consumption of CNG Generator, Diesel Generator. Can we take this advantage IN energy Simulation As per this energy rates variation we get 20 - 25% saving can we claim this saving as a benefit of CHP. is it acceptable manner

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Profile picture for user simonsiva22
SAMY Chamy
Enginneer
T&T Green
LEEDuser Basic Member
9 thumbs up

Mon, 02/01/2016 - 04:33

Awaiting for your reply
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 02/01/2016 - 18:39

The rate used for the CHP in the proposed must be identical to the rate used in the baseline. You can't use the diesel rate for the baseline.

Sat, 06/24/2017 - 10:41

I am working on a project where the same scenario exist as mentioned above with natural gas generator for power generation where heat is recovered to run the VAM chiller. So, i modeled the generator and VAM chiller as CHP in the proposed design. Here the backup source is electricity from grid. so is it acceptable to model the baseline design with energy rate of grid sourced electricity? Kindly clarify. Thanks in advance.
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 06/26/2017 - 13:24

Sounds right to me.

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