Sökning: "Björn Palm"

Visar resultat 11 - 15 av 38 avhandlingar innehållade orden Björn Palm.

1. 11. Energy Efficiency Improvements in Household Refrigeration Cooling Systems

   Författare :Erik Björk; Björn Palm; Claudio Melo; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Household refrigerator; Domestic refrigerator; Free convection; Plate evaporator; Heat transfer; Flow boiling; Isobutane; R600a; Pressure drop; Two-phase; Cooling system; Charge inventory; Cyclic losses; Thermography;

   Sammanfattning : This thesis is based on eight articles all related to the characteristics of the cooling system and plate evaporator of a household refrigerator. Through these articles, knowledge is provided that can be used to increase the operational efficiency in household refrigeration. LÄS MER

3. 12. Responsible resource management in hotels : attitudes, indicators, tools and strategies

   Författare :Paulina Bohdanowicz; Björn Palm; Ivo Martinac; Walter Jamieson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hotels; energy and water management; energy and water conservation; environmental awareness; environmental reporting; performance indicators; consumption modelling; benchmarking; Mechanical energy engineering; Mekanisk energiteknik;

   Sammanfattning : Hotels constitute one of the main, and still expanding, pillars of the tourism sector and are highly unique among other commercial buildings. Resource intensive and frequently inefficient systems and operational routines applied in the sector, result in considerable environmental impact and indicate an urgent need for more environmentally sound practices and products in the hotel industry. LÄS MER

4. 13. Building as active elements of energy systems

   Författare :Mehmet Börühan Bulut; Björn Karlsson; Fredrik Wallin; Peter Stigson; Jenny Palm; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; smart grid; smart home; cooperation; energy; buildings; Energy- and Environmental Engineering; energi- och miljöteknik;

   Sammanfattning : Buildings account for approximately 40% of the energy demand and 33% of the total greenhouse gas emissions in the European Union. Accordingly, there are several efforts that target energy efficiency in buildings both at the European and Swedish levels. The role of buildings in climate change mitigation, however, is not limited to energy savings. LÄS MER

5. 14. Investigation of Vapor Ejectors in Heat Driven Ejector Refrigeration Systems

   Författare :Jianyong Chen; Björn Palm; Hans Havtun; Ian W. Eames; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vEjector Refrigeration System; Ejector; Efficiency; Performance; Exergy Analysis; Experiment.; Energy Technology; Energiteknik;

   Sammanfattning : Refrigeration systems, air-conditioning units and heat pumps have been recognized as indispensable machines in human life, and are used for e.g. food storage, provision of thermal comfort. These machines are dominated by the vapor compression refrigeration system and consume a large percentage of world-wide electricity output. LÄS MER

7. 15. Thermal and hydraulic performance of compact brazed plate heat exchangers operating as evaporators in domestic heat pumps

   Författare :Joachim Claesson; Björn Palm; Satish G. Kandlikar; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; plate heat exchanger; evaporator; heat pump; flow boiling; pressure drop; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

   Sammanfattning : This thesis investigates the performance of compact brazed plate heat exchangers (CBE) operating as evaporator in heat pump applications. The thesis, and the performances investigated, has been divided into three main sections; One zone evaporator performance; Two zone evaporator performance; and finally Local performance. LÄS MER