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District Heating and Cooling

How to achieve sustainable goals in cities

The power of networks. Cities have a central role to play in the transition to sustainable energy. They account for over 70 % of our global energy use, and half of that goes to heating and cooling. The best way to reduce primary demand is by collectivizing it through District Heating and Cooling networks. District networks offer the least-cost and most powerful solution to scale up efficiency for climate-proof and conscience-free energy.

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The UN estimates that modern district energy systems could result in a 7% reduction in overall capital investment in the power sector by 2030 – an investment savings of $795 billion by replacing the use of electricity for heating and cooling and thereby reducing peak and overall power demand. Cities, governments and independent agencies increasingly understand, and realize this potential, as demonstrated by UNEP, who launched a District Energy in Cities (DEC) initiative to facilitate our energy transition in this way.

Infrastructure to connect demand with supply

Managing interdependent services and utilities, cities are uniquely placed to enable the initiation and integration of such solutions. They can facilitate the infrastructure necessary to rapidly advance both energy efficiency and renewable energy. Both user and producer rely on networks that function as a locally attuned backbone that enable the energy exchanged between them. We strive for lower (total) investment per house connection, durability and system implementation reliability. Whether dealing with a greenfield roll-out, renovating or expanding an existing network, or retrofitting an existing community with a new network; Thermaflex ensures a future proof solution.

Total Benefit of Ownership

In order to meet current and anticipate future stakeholder needs, we drove innovation further with focus on Total Benefit of Ownership by network design, speed and quality of installation, environmental impact, efficiency, sustainability and logistics. New tailor-made solutions address key requests, like minimal disturbance to the existing environment and speed and safety of installation.


  Pressure drop PB-pipes PDF 44 KB Preview Download Mail

Pressure drop PB-pipes


  New ‘Slimnet’ for 4,000 homes is blueprint for the future PDF 562 KB Preview Download Mail

Purmerend’s district heating resurrection at steep returns: In September 2015, the multiannual renovation project for 4,000 homes concluded for the city of Purmerend, the Netherlands. The cooperation between Thermaflex and local district heating company Stadsverwarming Purmerend saw the successful end of SVP’s ‘SlimNet’ program, aimed at reviving Purmerend’s deteriorated district heating network. Read the full article here.

  EuroHeat&Power: Optimized heating and cooling systems PDF 270 KB Preview Download Mail

New economic connection solution for flexible piping: optimized heating and cooling systems for low energy housing developments. 

(EuroHeat&Power Magazine, English Edition, Feb. 2013)

  EuroHeat&Power: Innovative concept with flexible pipes PDF 435 KB Preview Download Mail

Innovative Concept with flexible pipes: 

New Record: 1,5 hours for ten house connections.

(EuroHeat&Power Magazine, English Edition, Nov. 2014)

Technical Datasheets

  Drukverliezen PB-leidingen PDF 44 KB Preview Download Mail

Drukverliezen PB-leidingen


  Practical Experience of 4th Generation District Heating (4DH) PDF 1527 KB Preview Download Mail

Projects from Austria and the Netherlands help to understand best practice district energy solutions realized by Thermaflex, related to low temperature district heating and cooling, helping to combine scientific work with practical applications and stakeholder know-how. 

  Future proofing the DHC network PDF 612 KB Preview Download Mail

During the District Heating and Cooling Symposium 2010 in Tallinn Thermaflex presented 5 papers addressing the benefits of flexible pipe systems and tailored prefabricated solutions over the entire network lifetime, exemplified by the pre-insulated piping system Flexalen 600. Since that time Thermaflex achieved a global acceptance of the introduced solutions as they have been successfully implemented in numerous District Heating and Cooling network applications all over the world. This formed the basis for further developments since 2010. Production facilities have been up-scaled to meet an increasing demand and quality level. The cooperation of R&D with key stakeholders focused on responding to their challenges with new and improved solutions.

  Engineering functionality PDF 374 KB Preview Download Mail

Awareness of the total costs of heating & cooling networks is rapidly increasing. Optimisation and smart designs offer more options and choices to important added value. Thermaflex focusses on minimizing “total cost of ownership” and maximizing the speed of implementation of these networks. A support program for innovative network design, available to all professional designers/engineers, offers the right solution/tool in combination with Flexalen network concepts.

Environmental Certifications

  What is an EPD? PDF 421 KB Preview Download Mail


  Earth Quake resistance certificate PDF 735 KB Preview Download Mail

Technical report of dynamic tests performed on Flexalen pre-insulated pipe systems, simulating seismic with 7-9 intensity on the MSK-64 scale.
Flexalen is recommended for applications in the regions with seismic activity of 7-9 magnitude.

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