Sökning: "superheater"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet superheater.

1. 1. Solid solution strengthening effect on creep strength of austenitic stainless steel

   Master-uppsats, KTH/Materialvetenskap

   Författare :Sara Abouzari; [2012]
   Nyckelord :;

   Sammanfattning : Sanicro 25 is a newly developed austenitic stainless steel, designed for the next generation of Ultrasupercritical coal-fired boilers in electrical power plants. This material is applicable in reheater and superheater tubes, where the material temperature is up to 700°C. LÄS MER

3. 2. Modelling Heat Transfer in the Cooling Pass of a

   H-uppsats, Chalmers tekniska högskola/Institutionen för energi och miljö

   Författare :Louise Axelsson; [2012]
   Nyckelord :Model; Heat Transfer; Radiation; CFD; Power Boiler; EfW; FBC;

   Sammanfattning : In EfW (Energy from Waste) boilers, flue gases can create corrosion of the superheatersand economisers, caused by deposits of the melted ashes. Due to this, the flue gases arecooled with water wall panels and water tube walls in a cooling pass before reaching theheat transfer surfaces, thus limiting the power output. LÄS MER

4. 3. Modelling Heat Transfer in the Cooling Pass of a Refuse-Fired Fluidised Bed Combustor

   H-uppsats, Chalmers tekniska högskola/Institutionen för energi och miljö

   Författare :Louise Axelsson; [2012]
   Nyckelord :Model; Heat Transfer; Radiation; CFD; Power Boiler; EfW; FBC;

   Sammanfattning : In EfW (Energy from Waste) boilers, flue gases can create corrosion of the superheaters and economisers, caused by deposits of the melted ashes. Due to this, the flue gases are cooled with water wall panels and water tube walls in a cooling pass before reaching the heat transfer surfaces, thus limiting the power output. LÄS MER

5. 4. Analysis of simultaneous cooling and heating in supermarket refrigeration systems

   Master-uppsats, KTH/Tillämpad termodynamik och kylteknik

   Författare :Johan Marigny; [2011]
   Nyckelord :refrigeration;

   Sammanfattning : In this master thesis project, conventional supermarket refrigeration systems using R404A are compared with refrigeration system solutions using natural refrigerants such as carbon dioxide and ammonia. This systems analysis considers the behavior of those systems in floating condensing and heat recovery mode. LÄS MER

7. 5. Modeling of Heat Transfer

   Master-uppsats, Mälardalens högskola/Akademin för hållbar samhälls- och teknikutveckling

   Författare :Tobias Wahlberg; [2011]
   Nyckelord :Boiler; steam; superheater; condenser; overall heat transfer coefficient; heat exchanger; Dymola; Modelica; heat transfer; fouling; economizer; process; simulator; evaporator; värmeöverföring; kondensor; överhettare; ekonomiser; värmeväxlare; ånga; ångteknik; kondensering; energiteknik; förångare; simulator;

   Sammanfattning : Modeling of heat transfer using Dymola. In this report a evaporator, economizer and superheater where modeled. The report describes how the models where modeled and what input was most suitable for a accurate model.. LÄS MER