P9
HEAT SUPPLY IN URBAN AREAS
heating to cover around 20% of production. Moreover, Marstal DH company and four other companies have developed and tested the heat storage pit and increased the share of solar heat up to 60%. The heat storage pit combines the heat storage tank and landfill technology with a floating insulated cover. Thus, the solar heat has paved the way for an efficient heat storage pit technology, which can store any other cheap surplus heat and renewable energy, e.g. from the fluctuating wind, industrial surplus heat, CHP plants and surplus heat from district cooling. It can even be used as a cold storage.
Hot water district heating and the preinsulated pipe technology has been the key to lower cost and larger market shares.
District heating supplies 63% of all homes. The heat production based on renewable energy and surplus heat is 60% today, but can be increased to 100 % to meet the energy policy objectives.
CONCLUSION The historic development of Danish district energy has led to a very modern and innovative infrastructure system. Use of district energy infrastructure is unavoidable for designing low-carbon or carbon neutral cities. Luckily, the Danes have paved the way by inventing the technology needed around the world. But there is still a potential for improvements, in particular digital solutions for active energy management and interaction with the end users and more integration of district heating and cooling. If all end-users connect in the smartest way and establish low temperature heating systems, it will pave the way for even more efficient distribution, production and storage.
For further information please contact:
Rambøll Att.: Anders Dyrelund Hannemanns Allé 53 DK-2300 København S
Phone: +45 5161 8766 AD@ramboll.com
“In 2058, the most dramatic change in our
”In 2058, the most dramatic change in our energy system will be that green energy free
energy system will be the proliferation of district
energy systems to enable efficient thermal sharing and more resilient local microgrids in clusters, cities, communities and campuses.” Rob Thornton, President and Chief Executive Officer, International District Energy Association (IDEA)
from CO2 is available as an (almost) unlimited resource for all locally and globally.” Carsten Bach, Energy Political Spokesman, Liberal Alliance
www.dbdh.dk
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