Methodology : ID_PM033

Methodology No. ID_PM033
Sectoral scope 1. Energy industries (renewable – / non-renewable sources); 3. Energy demand
Title Installation of gas engine cogeneration system with absorption chiller to supply electricity, heating energy and cooling energy
Summaries GHG emission reduction measures : Electricity and heating energy generated by a CGS installed in a project site substitute all or part of grid and/or captive electricity as well as heating energy. Absorption chiller utilizing heating energy generated by a CGS is also introduced to save energy for cooling energy demand. Installation of CGS and absorption chiller leads to efficient energy use of recipient facility(ies) and in turn GHG emission reductions.
Calculation of reference emissions : [Reference emissions for CGS] Reference emissions are CO2 emissions from the use of grid and/or captive electricity and heating energy (e.g. steam and hot water) generated by a reference boiler, which are calculated with the amount of electricity consumed by the recipient facility(ies) which is generated by the CGS, the amount of heating energy consumed by the recipient facility(ies) which is generated by the CGS, CO2 emission factors for consumed electricity in the recipient facility(ies), reference boiler efficiency and CO2 emission factor for fossil fuel consumed by the reference boiler. [Reference emissions for absorption chiller] Reference emissions are GHG emissions from using reference chiller(s) which is determined as centrifugal chiller in this methodology. Reference emissions are calculated with cooling energy of project chiller(s), COP of reference chiller, and CO2 emission factor for electricity consumed. GHG emissions from using chilled water pump, cooling water pump and cooling tower are excluded from calculation since those pumps exist in both reference and project chiller system and they can cancel each other out.
Calculation of project emissions : [Project emissions from CGS] Project emissions are CO2 emissions from the use of CGS, which are calculated with the amount of gas fuel consumed by the CGS, net calorific value of gas fuel consumed by the CGS, and CO2 emission factor for gas fuel consumed by the CGS. [Project emissions from absorption chiller] Project emissions are GHG emissions from using project chiller(s), which are the sum of emissions from electricity consumption and fossil fuel consumption. GHG emissions from electricity consumption are calculated with electricity consumption of pumps absorbing solution and refrigerant built in the project chiller(s) and CO2 emission factor for electricity consumed. GHG emissions from fossil fuel consumption, where applicable, are calculated with fuel consumption of project chiller(s) and CO2 emission factor for fuel consumed. GHG emissions from using chilled water pump, cooling water pump and cooling tower are excluded from calculation since those pumps exist in both reference and project chiller system and they can be canceled each other out .
Monitoring parameters : Electricity consumption by the recipient facility(ies) which is generated by the CGS; Heating energy consumption by the recipient facility(ies) which is generated by the CGS; Cooling energy generated by the project absorption chiller; Gas fuel consumption by the CGS; Electricity consumption by the project absorption chiller; Gas fuel consumption by the project absorption chiller, where applicable; The amount of fuel consumed and/or the amount of electricity generated by captive power, where applicable.
Status Public comments closed
Methodology Proponent DENSO CORPORATION
Proposed Methodology
Public comments
  • 12 May 20   -  26 May 20