Sökning: "ASHRAE"

Visar resultat 1 - 5 av 26 uppsatser innehållade ordet ASHRAE.

  1. 1. ENERGIEFFEKTIVISERING MED HJÄLP AV STANDARDER FÖR INOMHUSKLIMAT PÅ MUSEER

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Anna Clément; [2022-11-09]
    Nyckelord :Standard; inomhusklimat; museum; energieffektivisering;

    Sammanfattning : Preventive conservation is a large part of the work to preserve cultural heritage and is about creating as gentle an environment for the objects as possible. In order to minimize the risk of climate-related degradation, museums use various standards and guidelines that allow only small fluctuations in temperature and relative humidity. LÄS MER

  3. 2. Modelling an air handling unit, building and occupant, regarding energy, moisture and frost protection

    Master-uppsats, Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

    Författare :Marius Daugela; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Frost formation in heat exchangers is an often accruing issue in cold climates. The aim of the project is to calculate the risk of frost formation in different Swedish cities by modeling vapor and frost behavior in heat exchangers... LÄS MER

  4. 3. Performance Analysis of CO2 Heat Pumps in Different Applications

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Jaykumar Thanggavelu; [2022]
    Nyckelord :CO2 Heat pump; COP; District heating; commercial buildings; residential buildings; field measurement data; Propane; Ammonia; R-134a; CO2 Värmepump; COP; Fjärrvärme; kommersiella byggnader; bostadshus; fältmätningsdata; Propan; Ammoniak; R-134a;

    Sammanfattning : This study focuses on researching the performance of CO2 heat pumps in different real-time applications and in some studies, it compares the performance to synthetic and other natural refrigerants based on heat pump data provided from buildings. The research on the performance of the CO2 heat pump is performed based on Sweden's climatic conditions. LÄS MER

  5. 4. Performance Evaluation of a Photovoltaic/Thermal (PVT) Collector with Numerical Modelling

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Mila Ebrahim; [2021]
    Nyckelord :Solar energy; Renewable energy; Photovoltaic thermal collector; PV Thermal; PVT Collector; Performance; Numerical modelling; COMSOL Multiphysics; Ground Source Heat Pump; Solenergi; Förnybar energi; kominerad solcell solfångare; PVT panel; Prestanda; Numerisk modellering; COMSOL Multiphysics; Bergvärme;

    Sammanfattning : In Photovoltaic/Thermal (PVT) technology, both PV and solar thermal technology are integrated in the same module for simultaneous electricity and heat production. Research has shown that there are multiple benefits from integrating PVT collectors with a ground source heat pump (GSHP) system, since it allows for seasonal storage of thermal energy over the year. LÄS MER

  7. 5. KEY FACTORS AND PROBLEMS IN THE PERFORMANCE OF KITCHEN VENTILATION SYSTEMS

    Magister-uppsats, Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

    Författare :ÁLVARO ROS; [2020]
    Nyckelord :RESTAURANT KITCHEN VENTILATION; KITCHEN HOOD; VENTILATION SYSTEM; AIRFLOW; AIR QUALITY; PRESSURE DROP; HOOD PERFORMANCE; EFFICIENCY;

    Sammanfattning : Regarding the great importance of a good working environment, in this research, ventilation systems installed in kitchens of restaurants were studied in order to avoid problems and to understand the key factors that can influence on the performance of the system. The results obtained were taken into account to provide some recommendations to a real ventilation system of a restaurant called Pastaria in Gävle (Sweden). LÄS MER