Search for dissertations about: "heat pumps"
Showing result 16 - 20 of 97 swedish dissertations containing the words heat pumps.
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16. Optimum Design of Heat Exchanger Networks in Retrofit Situations
Abstract : Today, the most important activity in heat exchanger network synthesis is the retrofitting, rather than grass-root design, of networks. There is a vast potential for energy improvement in many processes by increasing the level of internal heat exchange. READ MORE
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17. Two-Stage Industrial Heat Pumps - A Design Study
Abstract : .... READ MORE
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18. Non-Azeotropic Mixtures as Working Fluids in Heat Pumps: A theoretical and experimental study
Abstract : Due to the fact that CFC (Chloro-Fluoro-Carbon) fluids will be forbidden as working fluids in heat pumps for environmental reasons, there is an urgent need for alternatives. As one alternative type of fluid, non-azeotropic mixtures have been suggested. This thesis deals with such mixtures. READ MORE
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19. Distributed thermal response tests : New insights on U-pipe and Coaxial heat exchangers in groundwater-filled boreholes
Abstract : U-pipe Borehole Heat Exchangers (BHE) are widely used today in ground source heating and cooling systems in spite of their less than optimal performance. This thesis provides a better understanding on the function of U-pipe BHEs and Investigates alternative methods to reduce the temperature difference between the circulating fluid and the borehole wall, including one thermosyphon and three different types of coaxial BHEs. READ MORE
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20. Large Heat Networks in District Heating Systems
Abstract : District heating (DH) systems have experienced three generations since the 1880s. In chronological order, high temperature steam and pressurized hot water above and below 100 degrees have been used to carry heat over these three generations. READ MORE