Sökning: "air curtain"

Hittade 5 avhandlingar innehållade orden air curtain.

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

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

    Sammanfattning : 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. LÄS MER

  3. 2. Computational fluid dynamics application in indoor air quality and health

    Författare :Parastoo Sadeghian; Sasan Sadrizadeh; Sture Holmberg; Ann Tammelin; Olof Sköldenberg; Catherine Noakes; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ventilation systems; Indoor air quality IAQ ; Bacteria-carrying particles BCP ; Infectious respiratory disease; Operating room OR ; Thermal comfort; Computational fluid dynamics CFD ; ventilationssystem; bakteriebärande partiklar; infektionssjukdomar i luftvägarna; operationsrum; termisk komfort; numerisk strömningsmekanik; Strömnings- och klimatteori; Fluid and Climate Theory;

    Sammanfattning : Indoor air quality directly affects the comfort, performance, and well-being of occupants. Indoor pollution can cause immediate or long-term health effects and has been responsible for 4.1% of global deaths in recent decades. LÄS MER

  4. 3. Numerical predictions and measurement of non-isothermal airflows : evaluation of buoyant wall jets and airflow through large openings

    Författare :Tobias Törnström; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : How can we attain a good indoor climate and at the same time reduce energy consumption? These issues are of particular interest in countries with cold climates, where the need for heating is large. It is important to design a HV AC (Heating, Ventilation and Air Conditioning) system that achieves a desirable indoor climate, where discomfort due to draft and thermal discomfort is avoided. LÄS MER

  5. 4. Water Curtains in Gas Storage. An Experimental Study

    Författare :Carl-Olof Söder; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; analytical simulations; unlined gas storage; jointed rock; gas migration; gas containment; geo-hydrological test methods; hydromechanical breakdown;

    Sammanfattning : Water curtains have been used for more than 20 years to prevent the escape of gas from caverns excavated in rock. Today, the use of water curtains appears to be increasing, with applications in various forms of storage caverns. LÄS MER

  7. 5. Subjective perception and prediction model of vehicle stability under aerodynamic excitations

    Författare :Arun Kumar; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; human-vehicle interaction; prediction model; drivability; unsteady aerodynamics; Driving simulator; driver perception.; vehicle stability;

    Sammanfattning : The current automotive era is moving towards electrified vehicle propulsion. As a result, an energy efficient vehicle design becomes one of the top priorities. From an aerodynamics point of view, the vehicle should be more streamlined for minimal aerodynamic drag. LÄS MER