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Very large complex DES

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Thu, 10/14/2010 - 20:29

The logic for a points cap is that the DES may not be very efficient. In the old DES guidance, the plant efficiencies had to be included, so a project connected to a poorly performing plant might not any points. At least with this new guidance your project could get some credit. What are the thermal losses on a 15 mile heating pipe? Why would you not want to consider a stand-alone system?

Fri, 10/15/2010 - 05:09

Hi Christopher Thank you for your reply. The DES is very efficient. Compared to oil or gas there is a significant smaller CO2-outlet by using DES. The thermal losses of a large system of heating pipes are of course accounted for in this CO2-calculation. This solution is a lot cheaper to establish than a stand-alone system, and there is also a requirement i the danish building regulation that we should use district heating. So environmental , economic and legislative issues have influenced the choice of district heating. I think you need to understand that this is a very large system and not just a system covering a campus or something similar. Most of the city of Copenhagen (approx. population 1 million) is covered by district heating, so it is not a 15 mile heating pipe, but a network of heating pipes supplying all the households in the capital of Denmark. So bottomline is that I have taken the most environmental friendly heating supply, I have designed a building that uses less than 25% of the baseline building, but I still can't get the maximum number of points. Is the way to go a more detailed narrative about the danish district heating and attach this in Alternative Compliance. Kind regards Niels Varming

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