Sökning: "flow regulator"

Visar resultat 6 - 10 av 41 uppsatser innehållade orden flow regulator.

  1. 6. Current Control and Modelling of an Inspiration Valve

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Astrid Lindstedt; [2021]
    Nyckelord :Current Servo; Cascade Control; Solenoid Model; Ventilator; Strömregulator; Kaskadreglering; Solenoid modell; Respirator;

    Sammanfattning : An analog current servo of an intensive care ventilator is being developed at Getinge in Stockholm. The current servo is used to control the output gas flow of an inspiration valve to a patient’s lungs. The ventilator’s control system is in a cascade design of two closed-loops, of which the current servo is the controller for the inner loop. LÄS MER

  3. 7. Design and Development of an Experimental Test Rig for Heat Sinks

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Gabriel Kaduvinal Abraham; [2020]
    Nyckelord :Cooling; Experimental Setup; Flow rate; Heat sink; Plumbing; Sensors; Thermal Efficiency; Kylning; experimentell installation; flödeshastighet; kylfläns; VVS; sensorer; värmeeffektivitet;

    Sammanfattning : Heat sinks are used mainly to take away the excessive heat which are produced in a component. This transfer of heat enables a smooth operation of the system with the heat generating component. The efficiency of heat sink is often dependent on the amount of heat it can take away within the smallest duration of time. LÄS MER

  4. 8. Considerations and Development of a Ventilation on Demand System in Konsuln Mine

    Master-uppsats, Luleå tekniska universitet/Geoteknologi

    Författare :Seth Gyamfi; [2020]
    Nyckelord :Ventilation on demand VOD ; Swedish Occupational Health Safety OH S regulations; Threshold Limit Value TLV ; Ventilation model; Diesel; battery-powered; heat; and blast simulations; Contaminants;

    Sammanfattning : Ventilation on demand (VOD) concept has earned significant worldwide attention by several mining companies in recent years. It is a concept where airflow is provided only to areas that require ventilation. The implementation of the concept has resulted in significant savings in annual energy consumption and cost for several companies globally. LÄS MER

  5. 9. Monitoring air quality indicators and energy consumption in Dalarnas Villa during operation of a demand-controlled exhaust ventilation system

    Magister-uppsats, Högskolan Dalarna/Energiteknik

    Författare :Ian Garman; Ahmad Haj Ahmad; [2020]
    Nyckelord :Ventilation; demand control; airflow; frånluft; exhaust; carbon dioxide; CO2; indoor air quality; IAQ; air monitoring; villa; single family house; småhus; energy efficiency;

    Sammanfattning : A real-world study was undertaken of the indoor air quality in a recently-built single family home in central Sweden, to establish whether demand controlled ventilation provided superior interior conditions, when compared with other air supply strategies, including the standard used by the Swedish buildings regulator. The property was highly airtight, with ventilation achieved using a forced exhaust system. LÄS MER

  7. 10. A Passive Constant Flow Regulator for Drug Delivery to the Human Lung in Portable Inhaler Systems

    Master-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Maria Pereverzina; [2020]
    Nyckelord :Inhalation systems; flow regulator; passive; portable; prototype;

    Sammanfattning : Respiratory diseases, such as asthma and chronic obstructive pulmonary disease (COPD), are pathological conditions affecting the airways of the respiratory system. Currently more than 90 million people are suffering from respiratory diseases, and COPD is predicted to become the third leading cause of death in the world by 2030. LÄS MER