Sökning: "pump"

Visar resultat 11 - 15 av 568 avhandlingar innehållade ordet pump.

1. 11. Flow Pulsations in Fluid Power Machines - a Measurement and Simulation Study

   Författare :Liselott Ericson; Linköpings universitet; []
   Nyckelord :noise; pump; motor; measurement; optimisation; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Stricter requirements for better working environment involve noise and vibration control of hydraulic machines. The operational conditions for hydraulic machines, such as pressure and rotational speed, are also increasing and this makes it even more difficult to develop a quiet, vibration-free machine due to the interdependence between noise and escalating operational conditions. LÄS MER

3. 12. Heterogeneous Technologies for Microfluidic Systems

   Författare :Gunjana Sharma; Klas Hjort; Sami Franssila; Uppsala universitet; []
   Nyckelord :actuator; biosensor; fluidic circuit board; heterogeneous technology; ion track; microfluidic; pump; stainless steel; super-hydrophobic; valve; Viton; TECHNOLOGY; TEKNIKVETENSKAP; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

   Sammanfattning : In this thesis, conventional and unconventional technologies have been studied and combined in order to make heterogeneous microfluidics with potential advantages, especially in biological applications. Many conventional materials, like silicon, glass, thermoplastic polymers, polyimide and polydimethylsiloxane (PDMS) have been combined in building heterogeneous microfluidic devices or demonstrators. LÄS MER

4. 13. Apply heat pump systems in commercial household products to reduce environmental impact : How to halve the electricity consumption for a household dishwasher

   Författare :Peder Bengtsson; Jonas Berghel; Per Lundqvist; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; household appliance; electricity consumption; heat pump; environmental impact; Miljö- och energisystem; Environmental and Energy Systems;

   Sammanfattning : In the household appliance industry, heat pump systems have been used for a long time in refrigerators and freezers to cool food, and the industry has driven the development of small, high-quality, low-price heat pump components. In the last few decades, heat pump systems have been introduced in other household appliances, with the express purpose of reducing electricity consumption. LÄS MER

5. 14. Solar heat pump systems for heating applications : Analysis of system performance and possible solutions for improving system performance

   Författare :Stefano Poppi; Per Lundqvist; Chris Bales; Kai Siren; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar heat pump systems; techno-economics; solar thermal; system improvements; cost-effectiveness; Energiteknik; Energy Technology; MacSheep;

   Sammanfattning : Solar heat pump systems (SHPs) are systems that combine solar energy and heat pumps. SHPs have been investigated for several decades and have been proven to increase the share of renewable energy and reduce electric energy demand in residential heating applications. LÄS MER

7. 15. A minimally invasive axial blood flow pump : an experimental and clinical study

   Författare :Urban Lönn; Howard Frazier; Linköpings universitet; []
   Nyckelord :Axial blood flow pump; Hemopump; LVAD; Beating heart CABG; MEDICINE; MEDICIN;

   Sammanfattning : The first aim of this thesis was to evaluate a new minimally invasive axial blood flow pump for treatment of patients needing circulatory support after open heart surgery. This system, the Hemopump temporary cardiac assist device, is a very small catheter mounted intracorporeal pump, which is introduced transvalvularly into the left ventricle. LÄS MER