Sökning: "Substation performance"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden Substation performance.

  1. 1. District Heating Substations. Performance, Operation and Design

    Författare :Janusz Wollerstrand; Energihushållning; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extreme value; heater; sizing; domestic hot water; drag reducing additives; microbial fouling; heat exchanger fouling; simulation; design; performance; District heating; substation; Energy research; Energiforskning;

    Sammanfattning : This thesis work is concerned with the efficient layout and operation of substations, i.e. those district heating (DH) system units which connect the network and internal building heating systems, such as radiator heating systems and domestic hot water distribution networks. LÄS MER

  3. 2. District Cooling – Towards Improved Substation Performance

    Författare :Maria Jangsten; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control strategy; heat exchanger; district cooling; HVAC; operational data; energy transfer station; substation; low delta-T; high temperature district cooling;

    Sammanfattning : The global cooling demand in buildings is rapidly increasing and to supply this demand, district cooling is one solution. However, many district cooling systems suffer from low delta-Ts (receiving low return temperatures from the buildings connected to the system). LÄS MER

  4. 3. Effektivisering av abonnentcentraler i fjärrvärmenät

    Författare :Lena Råberger; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; consumer substation; district heating system; efficiency; performance;

    Sammanfattning : .... LÄS MER

  5. 4. Low-temperature based thermal micro-grids: operation and performance assessments

    Författare :José Fiacro Castro Flores; Viktoria Martin; Bruno Lacarrière; Justin NingWei Chiu; Vittorio Verda; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-temperature district heating; active thermal micro-grid; substation operation; performance assessment; distributed heat resources; chauffage urbain basse température; micro-réseaux de chaleur urbains actifs; fonctionnement de la sous-station; évaluation de la performance; sources de chaleur distribuées; lågtemperatur fjärrvärme; aktiv fjärrvärmemikronät; fjärrvärmecentral operation; prestationsbedömning; distribuerada värmekällor; Energy Technology; Energiteknik;

    Sammanfattning : Energy use in the urban environment is vital for the proper functioning of our society, and in particular, comfort heating –or cooling– is a central element of our energy system often taken for granted. Within this context, district energy systems and especially, district heating (DH) systems must evolve to adapt to the upcoming decades-long transition towards a sustainable energy system. LÄS MER

  7. 5. Spot the difference! : On the way towards automated fault handling in district heating buildings

    Författare :Sara Månsson; Energihushållning; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Customer installations; Customer data; Data analysis; District heating; Experience from industry; Fault detection; Fault handling; Fault labelling; Return temperatures; Substation performance; Taxonomy;

    Sammanfattning : This thesis focuses on how district heating utilities may work with fault handling in customer installations as a tool to reduce their return temperature levels. Reduced return temperatures would make it possible to improve the efficiency of the district heating systems and decrease their environmental impact. LÄS MER