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How to calculate the PES (Annex III)

How to calculate the PES (Annex III). CHP Heat η or Heat η is the heat efficiency (of the cogeneration production)  calculated according to Annex II

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How to calculate the PES (Annex III)

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  1. How to calculate the PES (Annex III) CHP Heat η or Heat ηis the heat efficiency (of the cogeneration production)  calculated according to Annex II CHP Electricity η or Electricity ηis the electrical efficiency (of the cogeneration production) defined as annual electricity (from cogeneration)  calculated according to Annex II Ref Heat ηis the efficiency reference value for separate heat production extracted from the matrix of reference values Ref Electricity ηis the efficiency reference value for separate electricity production extracted from the matrix of reference values

  2. Efficiency reference values for electricity (3) gaseous

  3. Reference value matrix heat efficiency

  4. Exercise: Calculation PES from CHP PES = ???

  5. Equation to calculate CHP see CWA page 18 Power to heat ratio Electrical efficiency without heat generation: Plant specific values:- p (total electricity)- qCHP (CHP heat)- f (total fuel)- fnon-CHP,q (fuel used to generate heat in separate boilers)- b (power loss coefficient) Reference value:- hCHP (overall efficiency of state-of-the-art CHP plant e.g. 75 to 80%) CHP fuel:

  6. Exercise: Calculation of CHP Power to heat ratio (sCHP) = ??? CHP electricity (pCHP) = ??? CHP fuel (fCHP) = ???

  7. Homework 1: Example from Textile Industry Needed for the textile process is only saturated steam of temperature 158.5 °C. Question 1: Does it make sense to use the superheated steam from extraction of 7 bar for additional power generation? Yes or no? Question 2: If yes: which components you have to buy new ? Question 3: If yes: Will there be any consequences for longer operation?

  8. Homework 2: Topping Cylce What has to be done to calculate P el CHP ?

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