Settling down district heating
  • Dominant trend: The reduction in working fluid temperatures
  • Heat recovery and wider integration requirements
  • Focus on thermal energy storage applications
District cooling – a hot topic
  • Demand for cooling energy is likely to leap 33-fold towards end of this century
  • Capitalising on some of the most dynamic changes within energy sector
  • District cooling services: The supreme environmental advantage
New old frontiers
  • District Heating and Cooling: A new bid to reduce prime fuel consumption
  • Continuous technological development of an age-old concept
  • Cogeneration and economies of scale

Within the last 100-150 years district heating went trough a steady transformation. First generation systems used steam as the working fluid. The latest fourth generation schemes are based on the circulation of medium temperature water (50-70°C) for integration with other sources of energy, such as waste heat.

Some of pioneering groups are developing a next generation of networks allowing the utilisation of low temperature fluids to enable even wider integration possibilities. One of the main drivers behind introduction of the networks of Fourth and Fifth generation schemes is the need to integrate thermal energy storage within systems.

Worldwide demand for air-conditioning is rising at an exponential rate. It is predicted that within next 50 years cooling requirements will match and exceed the total demand for space heating.

Despite a slow response to fast growing market, the expansion of district cooling systems in developed countries is a new reality. Centralised cooling offers advantages over individual systems, including: greater efficiency; more reliable; wider use of natural refrigerants in place of synthetic gases characterised by high GWP (Global Worming Potential); and overall reduced cost.

District energy schemes represent one of the most heated frontlines in the struggle for a more sustainable future. District Heating and Cooling (DHC) at the top of modern energy chains is a long established concept that has been undergoing improvements throughout its history.

Nowadays most of the energy used to fuel DHC is sourced from far afield. However, district energy schemes are capable of reducing the consumption of the prime fuel by cogeneration at Combined Heat & Power (CHP) plants and by enabling mechanisms of the economies of scale.

Important Note:
Seal Navitas is not currently operating an open licensing programme. At present time we are ready only to support selected projects with partners who are prepared to participate in the development of the necessary standards to support design, construction and life cycle operation processes by ensuring compatibility and flawless functionality of the ESN integrations. All highly integrated projects incorporating various components from different technology and manufacturing vendors that can be supplied (replaced) by various fabricators, installers and maintenance groups outside unified standards, which may seriously affect performance.