Heat pumps in district heating networks

Torben Schmidt Ommen, Wiebke Brix Markussen, Brian Elmegaard

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    Abstract

    In the current Danish energy system, the majority of electricity and heat is produced in combined heat and power plants. With increasing shares of intermittent renewable power production, it becomes a challenging task to match power and heat production, as heat demand and production capacity constraints limit the power plants. Efficient heat pumps can be used to decouple the constraints of electricity and heat production, while maintaining the high energy efficiency needed to match the politically agreed carbon emission goals. The requirements in terms of COP, location, capacity and economy are calculated using an energy system model which includes power plants, heat pumps and district heating consumption profiles. The model is developed with focus on accurate representation of the performance of the units in different locations and operating modes. The model can assist in investment decisions and strategic planning in the energy sector. The paper presents a case study of optimal implementation of heat pumps in the present energy system of the Copenhagen area. By introduction of the correct capacity of heat pumps, a 1,6 % reduction in fuel consumption for electricity and heat production can be obtained at present conditions in a month with high heating demand.
    Original languageEnglish
    Publication date2013
    Number of pages9
    Publication statusPublished - 2013
    Event2nd Symposium on Advances in Refrigeration and Heat Pump Technology - Odense, Denmark
    Duration: 7 Mar 2013 → …
    Conference number: 2
    http://www.coolenergy.dk

    Conference

    Conference2nd Symposium on Advances in Refrigeration and Heat Pump Technology
    Number2
    Country/TerritoryDenmark
    CityOdense
    Period07/03/2013 → …
    Internet address

    Keywords

    • Combined heat and power
    • Heat pumps
    • District heating
    • Energy systems analysis
    • Optimisation

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