Design of base load heat sources in District Heating networks
This article explores how heat sources should be designed for the next generation of district heating networks and how this will benefit consumers and society. Originally district heating heat source design When buildings in an urban zone are designated to be sup- plied from district heating networks, the heat sources com- monly are chosen and designed to cover demand and deliver security of supply. It is also designated to deliver low or zero car- bon emissions and ensure affordable heat prices by combining heat sources and technologies suitable for different purposes. Heat sources for district heating were originally mainly based on the waste heat from power production in CHP plants, heat from waste incineration, and in some cases, waste heat from industrial production plants. In most cases, the heat sources existed, and the possible heat delivery was higher than the demand in the district heating network being built for using these waste heat sources. Figure 1 shows the combination of waste heat and the needed reserve capacity that district heat- ing networks need to cover the waste CHP supply when this unit is stopped for maintenance or if it falls out. By expanding district heating networks, building transmission lines, and intelligent design of heat sources in combination with heat storages fitting to heat demand profiles, it is possible to use waste heat sources 100%. This way, you can avoid losses, get peak load heat demand covered by non- fossil solutions, keep affordable heat prices, and deliver a supply of security to heat consumers, all at the same time.
By John Tang Jensen, BEIS
The baseload waste heat source can supply all heat in the dis- trict heating system, and reserve capacity is only built to ensure
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