Sökning: "Adiabatic change in temperature"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Adiabatic change in temperature.

  1. 1. Temperature analysis of fire exposed load-bearing structures of mono glazed balconies

    Master-uppsats, Luleå tekniska universitet/Byggkonstruktion och brand

    Författare :Andreas Lilja; [2020]
    Nyckelord :CFD; FDS; FEM; TASEF; EKS; Eurocode; Simulation; Fire; Balcony; CFD; FDS; FEM; TASEF; EKS; Eurokoderna; Simulering; Brand; Balkong;

    Sammanfattning : Previous to the now acting construction regulations EKS and Eurocode, the fire resistance of the load-bearing structures of mono glazed balconies were designed with a fire test called the SP fire 105. In 2011, when EKS replaced the previous construction regulations called Boverkets konstruktionsregler, BKR, the SP fire 105 was no longer the requirement for mono glazed balconies. LÄS MER

  3. 2. Effekt av fasändringsmaterial på hydratiseringprocessen hos Portlandcement: En experimentell studie

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Lubna Al-Khaffaf; Hala Khalil; [2020]
    Nyckelord :Phase change material PCM ; established environmental requirements; hydration properties; heat flow; cement hydration; set time; energy consumption; slump flow; density; compressive strength.; Fasändringsmaterial PCM ; etablerade miljökraven; hydratiseringsegenskaperna; värmeflöde; cementhydratisering; inställningstid; energiförbrukning; slumflöde; densitet; tryckhållfasthet;

    Sammanfattning : The Phase change materials (PCM) have the ability to absorb and release heat as the temperature changes from high to low temperature and vice versa. The use of phase change materials has increased in the construction sector due to the established environmental requirements and the various application benefits, especially in the thermal comfort of building applications and construction of sustainable infrastructure around the world (Berardi and Gallardo, 2019). LÄS MER

  4. 3. Best practice of extracting magnetocaloric properties in magnetic simulations

    Master-uppsats, Uppsala universitet/Materialteori

    Författare :Johan Bylin; [2019]
    Nyckelord :Magnetocaloric effect; Thermodynamics; Statistical mechanics; Monte Carlo simulations; Metropolis algorithm; Wang-Landau method; Isothermal change in entropy; Adiabatic change in temperature; Numerical methods; Effective spin models;

    Sammanfattning : In this thesis, a numerical study of simulating and computing the magnetocaloric properties of magnetic materials is presented. The main objective was to deduce the optimal procedure to obtain the isothermal change in entropy of magnetic systems, by evaluating two different formulas of entropy extraction, one relying on the magnetization of the material and the other on the magnet's heat capacity. LÄS MER

  5. 4. EVALUATING THE ORGANIC RANKINE CYCLE (ORC) FOR HEAT TO POWER : Feasibility and parameter identification of the ORC cycle at different working fluid with district waste heat as a main source.

    M1-uppsats, Mälardalens högskola/Framtidens energi

    Författare :Salman Mohamad; [2017]
    Nyckelord :Organic Rankine cycle; Recuporator; regenerative; heat-to power; working fluids; low temperature heat; power generation;

    Sammanfattning : New technologies to converting heat into usable energy are constantly being developed for renewable use. This means that more interactions between different energy grid will be applied, such as utilizing low thermal waste heat to convert its energy to electricity. LÄS MER

  7. 5. Magnetic Properites in Alloy Systems

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Materialvetenskap

    Författare :Nanny Strandqvist; [2017]
    Nyckelord :Magnetocaloric effect; adiabatic temperature change; magnetic entropy change; magnetocaloric materials; magnetic refrigerator;

    Sammanfattning : The attention for materials displaying high magnetocaloric effect (MCE) has grown during the past 30 years. One of the most important properties of MCE is the adiabatic temperature change ( ). The main aim of this work was to develop a method to measure the temperature change ( ) for magnetocaloric materials in a changing magnetic field. LÄS MER