Conventional heating systems in single-family houses and apartment buildings consist of a central heat source and central DHW production. Today, renovated or new buildings are obliged to make at least partial use of renewable energy sources. All buildings must comply with strict DHW hygiene regulations.
In nearly all cases, it makes financial sense to heat multiple apartments, buildings or houses via a central system rather than individually. Modern central heating systems can use buffer tanks to combine different energy sources.
Buildings with decentralized DHW production need only three rather than the usual five supply lines to provide hygienically safe drinking water. If the volume of water held between the water heater and the taps is less than 3 liters, no regular hygienic testing is required.
Each building and apartment has a directly connected substation or flat station with integrated production of domestic hot water. Single or multiple heating circuits (e.g. radiator, floor heating system) are supplied with heated water from the central heat source.
Features and benefits
Domestic hot water is produced on demand, without storing
Heating systems can combine different energy sources
Product range
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Substations for direct heating have no heat exchanger separating the primary flow from the secondary flow. Therefore the supply from the network or the central oil-/gas boiler will flow directly into the network in each flat. Direct substations are recommended for maximum PN10 or PN6 networks.
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Substations for direct heating have no heat exchanger separating the primary flow from the secondary flow. Therefore the supply from the network or the central oil-/gas boiler will flow directly into the network in each flat. Direct substations are recommended for maximum PN10 or PN6 networks.
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Substations for indirect heating have a heat exchanger separating the primary flow from the secondary flow. Indirect substations are recommended for PN16 networks and higher pressure classes. Substations for direct heating have no heat exchanger separating the primary flow from the secondary flow and are recommended for maximum PN10 or PN6 networks. The domestic hot water is heated in a cylinder by the district heating water flow in a coil within the cylinder.
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Brochure | Specifying the right district heating substation makes commercial sense | Croatian | Croatia | 06 Aug, 2015 | 2.5 MB | |
| Brochure | Specifying the right district heating substation makes commercial sense | German | Multiple | 16 Mar, 2020 | 3.1 MB | |
| Brochure | Specifying the right district heating substation makes commercial sense | Romanian, Moldavian, Moldovan | Romania | 29 Aug, 2015 | 2.3 MB | |
| Brochure | Specifying the right district heating substation makes commercial sense | English | Multiple | 05 Mar, 2015 | 2.4 MB | |
| Brochure | Specifying the right district heating substation makes commercial sense | Bulgarian | Bulgaria | 31 Jul, 2015 | 11.3 MB | |
| Brochure | Specifying the right district heating substation makes commercial sense | Slovenian | Slovenia | 21 Jul, 2015 | 5.2 MB | |
| Brochure | Specifying the right district heating substation makes commercial sense | Ukrainian | Ukraine | 18 Sep, 2015 | 2.2 MB | |
| Brochure | Specifying the right district heating substation makes commercial sense | Slovak | Slovakia | 21 Jul, 2015 | 2.4 MB |
Tools and apps
Heat Selector
Danfoss Heat Selector is the best-in-class online selection tool that optimizes planning process for heating application experts.
Case stories
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Suzhou city was founded in 500 BC. is nowadays a major city located in the south-eastern Jiangsu Province of East China, about 100 km (62 mi) northwest of Shanghai. It is a big economic center and local point of trade and commerce, and the second largest city in the province, after its capital Nanjing.
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The Saleska Valley district heating network is the second largest network in Slovenia, dating back to 1959. Since then, the demands have changed significantly and have challenged the hydronic balancing of the system which was optimized with new intelligent controllers Virtus.
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In Europe, 30 percent of all energy consumption goes to heat or cool buildings. Danfoss has the solution to lower energy usage and improve indoor climate by adding a digital element: Leanheat software.
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Since its launch in 2016, the SONDEX® branch of Danfoss Brasil has worked hard to become the leading manufacturer of plate heat exchangers for customers across Latin America. In December 2017, the company took giant strides towards fulfilling its high ambitions when it delivered four evaporators to Bioenergética Aroeira for use in the production of sugarcane ethanol – the biggest delivery of its kind ever manufactured in Latin America.
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The world’s largest solar heating plant in Silkeborg, Denmark harnesses energy to heat the homes and workplaces of 40,000 citizens. It supplies 18-20% of the annual heat consumption in the city of Silkeborg, Denmark, which has an ambitious target of CO2 neutrality in heat production by the year 2030.
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In December 2017, the European Swimming Championships took place in the brand-new Royal Arena in Copenhagen. The arena normally hosts major names from the international music scene but for five days of competition, it was transformed into an international swim stadium.
