Search for dissertations about: "Cooling Airflow"

Showing result 11 - 15 of 21 swedish dissertations containing the words Cooling Airflow.

  2. 11. Demand Controlled Ventilation (DCV) Systems in Commercial Buildings. Functional Requirements on Systems and Components

    Author : Mari-Liis Maripuu; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DCV; CO2-sensors; indoor climate control; energy efficiency; CAV; mixedgas;

    Abstract : Demand controlled ventilation (DCV) is considered as an energy efficient solution forair-based cooling and indoor air quality control. Considerable energy savings can beachieved when the airflow rate is continuously adapted to the actual load condition. READ MORE

  4. 12. Investigation of Surface Formation in As-Cast and Homogenized 6xxx Aluminium Billets

    Author : Nazlin Bayat; Torbjörn Carlberg; Håkan Olin; Yanjun Li; Mittuniversitetet; []
    Keywords : DC casting; surface segregation; surface defects; intermetallic phase; phase transformation; homogenization;

    Abstract : The direct chill (DC) casting technique to produce billets for extrusion and ingots for rollingwas developed in the 1930s. The principle, which is still valid, is a two-stage cooling with a primary cooling at a mould surface followed by water spraying directly on the surface. READ MORE

  5. 13. Computational fluid dynamics application in indoor air quality and health

    Author : Parastoo Sadeghian; Sasan Sadrizadeh; Sture Holmberg; Ann Tammelin; Olof Sköldenberg; Catherine Noakes; KTH; []
    Keywords : 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;

    Abstract : 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. READ MORE

  6. 14. The open absorption system : energy savings in different applications

    Author : Lars Johansson; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

    Abstract : The open absorption system is a technique that makes it possible to recover energy in different processes using moist air. In most applications the latent heat in moist air is difficult to recover because of the low temperature. Processes using outdoor air to carry away moisture therefore have high energy demands. READ MORE

  7. 15. cfd modelling and experimental study on the fluid flow and heat transfer in copper heat sink design

    Author : Bijan Karimpourian; Jafar Mahmoudi; Mahram Mosfegh; Mälardalens högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; copper heat sink cfd fluent modelling simulation; Chemical energy engineering; Kemisk energiteknik; Energi- och miljöteknik;

    Abstract : AbstractThis thesis is studying the heatsinks new designs for copper heatsinks which utilizes modelling and simulation by CFD, construction of prototypes and experimental works. Challenges and complications in manufacturing of copper heatsinks are expressed and finding the solutions to these hindrances involve in this work. READ MORE