"Air-Conditioning" is used to reduce the effects of heat waves in buildings. The technical possibilities range from electrical devices to using climate-friendly thermal energy from the cogeneration of heat and power.

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  • Dresden: -> Geschäftskunden -> DREWAG Dienstleistungen -> Klimakälte aus Fernwärme (in german only)

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    Short description of measure (Dresden)

    Problem to be solved: Overheating in buildings during heat waves

    Goal, potential objective: Limitation of the temperature increase in big buildings during heat waves and providing the basic energy demand for cooling by non-electrical thermal based systems

    Developmental steps: Development of single pilot projects in prestigious buildings; in a second step: connection of several buildings by "district cooling systems"

    Instruments, implementation mechanism: Extra financing in the case of pilot projects; price advantages of thermal energy during summer

    Area of implementation: Local and district systems

    Responsibilities: Energy supply companies in cooperation with architects and building owners; local administration/planning office in the case of district systems

    Time horizon: Medium term in case of existing systems of district heating; long term in case of development of new district heating systems

    Economic aspects: Price advantages in the delivery of heat from cogeneration during summer (use of waste heat); reduction of peak demand in electricity; longer operating times (more than 25 years) in relation to compressor machines are expected

    Promoters, obstacles, risks: Sale interests of the local supplier of thermal energy (minimum temperature of about 80°-90° is necessary); in case of low flow temperatures higher technical effort and more space is required; generally critical increase in return temperature

    Side effects: Efficient possibility for using thermal and solar energy in summer; lower noise level of air-conditioning systems compared to compressor machines (turbines)

    Bridge to mitigation: Saving electrical energy during peak demand in summer; higher efficiency of district heating systems on the basis of cogeneration