Advanced search

Showing result 1 - 5 of 19 swedish dissertations matching the above criteria.

  2. 1. Carbon Dioxide in Supermarket Refrigeration

    University dissertation from Stockholm : KTH

    Author : Samer Sawalha; Björn Palm; Eckhard Groll; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CO2; carbon dioxide; refrigeration system; supermarket; cascade; indirect; trans-critical; modelling; simulation; experiment; safety analysis; comparison; TECHNOLOGY Engineering mechanics Mechanical and thermal engineering Mechanical energy engineering; TEKNIKVETENSKAP Teknisk mekanik Mekanisk och termisk energiteknik Mekanisk energiteknik;

    Abstract : This thesis theoretically and experimentally investigates different aspects of the application of CO2 in supermarket refrigeration. Theoretical analysis has been performed using computer simulation models developed to simulate CO2 indirect, NH3/CO2 cascade, CO2 trans-critical and direct expansion (DX) R404A systems. READ MORE

  4. 2. Indoor Thermal Environment in Supermarkets. A study of measured and perceived comfort parameters

    University dissertation from Stockholm : KTH

    Author : Ulla Lindberg; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; refrigeration systems; supermarket; display cabinets; thermal comfort; thermal environment; interdisciplinary;

    Abstract : In the supermarket environment three different groups must be considered: food (food quality), personnel (working conditions) and customers. Customers are of particular interest since they make up the commercial basis for the supermarket. Currently, however, there are no recommendations on the indoor environment for this category. READ MORE

  5. 3. Energy Usage in Supermarkets - Modelling and Field Measurements

    University dissertation from Stockholm : KTH

    Author : Jaime Arias; Per Lundqvist; Denis Clodic; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Supermarket; Energy Performance; System Analysis; Modelling; Simulation; Field Measurements; Refrigeration Systems; Indirect Systems; Heat Recovery; Floating Condensing; TEWI; LCC.; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : This thesis investigates a special type of energy system, namely energy use in supermarkets through modelling, simulations and field studies. A user-friendly computer program, CyberMart, which calculates the total energy performance of a supermarket, is presented. READ MORE

  6. 4. Vertical Display Cabinets in Supermarkets - Energy Efficiency and the Influence of Air Flows

    University dissertation from Stockholm : KTH

    Author : Monica Axell; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; display cabinet; model; simulation; supermarket; CFD; air curtain; energy; performance; air distribution; display case; infiltration;

    Abstract : This thesis concerns investigations of the performance of vertical refrigerated display cabinets. Such cabinets are in widespread use and account for a considerable proportion of the energy used in shops. The open front is important for the shop-owner, who wants the chilled items in the cabinet to be well exposed and easily accessible. READ MORE

  7. 5. Ice Slurry as Secondary Fluid in Refrigeration Systems Fundamentals and Applications in Supermarkets

    University dissertation from Stockholm : KTH

    Author : Cecilia Hägg; Per Lundqvist; Mats Strömblad; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ice slurry; refrigeration; supermarket; TECHNOLOGY Engineering mechanics Mechanical and thermal engineering Thermal energy engineering; TEKNIKVETENSKAP Teknisk mekanik Mekanisk och termisk energiteknik Termisk energiteknik;

    Abstract : This thesis summarises the work performed within the project known as ICE-COOL at the Royal Institute of Technology (KTH) on low tem-perature applications of ice slurry. The ICE-COOL project is a Euro-pean Community funded project within the 5th Framework Program. READ MORE