Essays about: "exergy"

Showing result 11 - 15 of 33 essays containing the word exergy.

1. 11. A hybrid low - temperature heating system in geothermal retrofitting for public buildings in the Mediterranean climate

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Boumediene Bizimana; [2019]
   Keywords : Hybrid low-temperature floor heating; Energy performance; Thermal comfort; Indoor air quality; Lågtemperaturgolvvärme; Energiprestanda; Termisk komfort; Inomhusluftkvalitet;

   Abstract : More than 50 % of EU’s yearly energy demand is spent on heating and cooling systems with which most of its source is generated from non-renewable fossil fuel [1]. Furthermore, half of the EU buildings are heated with a non-efficient boiler of about 60% or less efficiency [1]. READ MORE

3. 12. Thermoeconomic analysis of LNG physical exergy use for electricity production in small-scale satellite regasification stations

   University essay from Högskolan i Gävle/Energisystem och byggnadsteknik

   Author : Dominykas Balciunas; [2019]
   Keywords : LNG; exergy; thermodynamics; economics; thermoeconomic analysis; small scale; satellite; regasification;

   Abstract : Liquefied natural gas (LNG) cold utilization in small scale regasification stations is a novel topic in the industry, while such systems have been proven feasible in large scale LNG facilities. Cold recovery and utilization in LNG regasification facilities would increase the thermodynamic efficiency and reduce cold pollution. READ MORE

4. 13. Relating gas turbine performance to combined cycle efficiency

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Simon Frick; [2018]
   Keywords : combined cycle efficiency; second law efficiency; exergy; HRSG; irreversibility; heat engine; thermodynamics; T-q diagram; Technology and Engineering;

   Abstract : The gas turbine has been around for over a century, providing power for a variety of applications. The efficiency, i.e. the amount of power produced per kilogram of fuel provided, has increased steadily over the years and is today greater than 44 percent in a state of the art gas turbine. READ MORE

5. 14. Enhancing the production of biomethane : A comparison between GoBiGas process and new process of combining anaerobic digestion and biomass gasification

   University essay from Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

   Author : Daheem Mehmood; [2016]
   Keywords : Aspen Plus; Biomethane; Biomass; Cold gas efficiency; GoBiGas process; Gasification; GoBiGas model;

   Abstract : In recent years, there is a rapid growing interest in the use of biomethane for the transport sector. A new method of combining anaerobic digestion and biomass gasification is proposed.The feasibility study shows that more biomethane can be produced; resulting in an increase in the revenue compared to individual biogas plants. READ MORE

6. 15. Efficiency comparison between Heat Pump andMicro CHP located in two different location inSweden

   University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

   Author : Omar Al-samuraaiy; [2016]
   Keywords : Micro CHP; Heat Pump;

   Abstract : Efficiency of a ground source heat pump with thermal capacity of 6 kW determined in two differentlocations in Sweden. In the north side with low average temperature which could go down to -10 ᵒCand in the south side, with low average temperature with +2 ᵒC. READ MORE