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c_direct_elec_emissions [2014/07/30 12:22] – codinac_direct_elec_emissions [2023/11/16 15:21] (current) – external edit 127.0.0.1
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 +====== Direct electric heating emissions ======
 +The emissions per kWh of heat supplied are equal to the sum of the emissions related to the electricity production and distribution plus the emissions of the production, installation and decommissioning of the direct electric heating system.
 +
 +The emissions related to the electricity supply (production&distribution) cannot be calculated as they are scenario dependent.
 +
 +The emissions related to the production, installation and decommissioning of a direct electric heating system come from the Ecoinvent V2.2 dataset <sup>[[#References|[1]]]</sup>: auxiliary heating, electric, 5kW, at plant, CH, [unit].
 +
 +^CO<sub>2</sub>-eq. emissions [kgCO<sub>2</sub>-eq./unit] |6.71 |
 +^Deposited waste [UBP/unit] |1423 |
 +
 +Knowing the capacity factor (0.3) and the life time of the system (25 years), the emissions per kWh of heat supplied can be calculated:
 +
 +^CO<sub>2</sub>-eq. emissions [kgCO<sub>2</sub>-eq./kWh<sub>th</sub>] |5.67E-06 |
 +^Deposited waste [UBP/kWh<sub>th</sub>] |0.0012 |
 +
 +If these emissions are compared to those for the actual electricity supply in Switzerland (0.125 kgCO<sub>2</sub>-eq./kWh<sub>e</sub> and 179.27 UBP/kWh<sub>e</sub>), it can be stated that the emissions attributed to the heating system are negligible.
 +
 +===== References =====
 +[1] [[http://www.ecoinvent.ch/|Ecoinvent V2.2]]
  

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