Sökning: "Cooling requirements"
Visar resultat 6 - 10 av 68 avhandlingar innehållade orden Cooling requirements.
6. Thermal Modelling of Power Modules in a Hybrid Vehicle Application
Sammanfattning : Hybrid electric and full electric vehicles have attracted growing attention during the last decade. This is a consequence of several factors, such as growing environmental concerns, increasing oil prices and a strive for oil independency. LÄS MER
7. Magnetic Refrigeration for Near Room-Temperature Applications
Sammanfattning : Refrigeration plays a crucial role in many different sectors and consumes about 17% of the electricity produced globally. This significant energy consumption implies large share of refrigeration in primary energy consumption and other environmental impacts. LÄS MER
8. The Penning trap mass spectrometer SMILETRAP II and evaporative cooling of highly-charged ions
Sammanfattning : Accurate mass values have wide-ranging applications in physics and metrology, allowing, for example, to test quantum electrodynamics and fundamental symmetries, to determine fundamental constants, and to establish weight standards. This thesis describes the new high-precision double-Penning trap mass spectrometer SMILETRAP II which aims at relative uncertainties in the mass determination of 10-10 and below. LÄS MER
9. Aerodynamic Design and Installation Effects of Automotive Electric Cooling Fans
Sammanfattning : Electric cooling fans play a crucial role in automotive thermal management. They generate the airflow required for heat rejection from the expended coolant circulating within the heat exchanger. This thesis focuses on the aerodynamic design and installation effects of electric cooling fans or "E-fans". LÄS MER
10. Thermal models of buildings : determination of temperatures, heating and cooling loads : theories, models and computer programs
Sammanfattning : The need to estimate indoor temperatures, heating or cooling load and energy requirements for buildings arises in many stages of a buildings life cycle, e.g. at the early layout stage, during the design of a building and for energy retrofitting planning. Other purposes are to meat the authorities requirements given in building codes. LÄS MER