Search for dissertations about: "CHP"

Showing result 6 - 10 of 86 swedish dissertations containing the word CHP.

2. 6. National Energy System Modelling for Supporting Energy and Climate Policy Decision-making: The Case of Sweden

   Author : Anna Cecilia Krook Riekkola; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; climate policy; district heating; TIMES-Sweden; ancillary benefits; energy system models; cross-border trade; energy-economics; soft-linking.; CHP; system analysis; Energy Engineering;

   Abstract : Energy system models can contribute in evaluating impacts of energy and climate policies. The process of working with energy system models assists the understanding of the quantita-tive relationships between different parts of the energy system and between different time periods, under various assumptions. READ MORE

4. 7. Sustainable production of bio-energy products in the sawmill industry

   Author : Anna Vidlund; KTH; []
   Keywords : sawmill industry; energy efficiency; heat recovery; integration; biofuel; upgrading; district heating; fuel pellets; CHP; VOC; CO2;

   Abstract : One of the great challenges facing society is to convert theglobal energy system to a sustainable process. Currently, 80%of the world´s energy is supplied through the combustionof fossil fuels. Not only are the fossil resources limited, theutilisation also increases the level of greenhouse gases in theatmosphere. READ MORE

5. 8. Modelling Towards Control of Dynamic Systems : Applications on RDF Fired CFB Performance and DHN Distribution

   Author : Nathan Zimmerman; Konstantinos Kyprianidis; Carl-Fredrik Lindberg; Erik Dahlquist; Natasa Nord; Mälardalens universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Heat and Power; Circulating Fluidized Bed Boiler; District Heating; Model Predictive Control; Feed-Forward; CHP; Energy- and Environmental Engineering; energi- och miljöteknik;

   Abstract : The combination of global warming along with increasing energy demand necessitates the importance of improving processes pertaining to the production and consumption of energy in combined heat and power plants. This thesis brings to light transient factors currently burdening process performance for circulating fluidized bed boilers (CFBs) combusting refuse derived fuels (RDFs) and district heating networks (DHN). READ MORE

6. 9. Retrofitting CHP Plant and Optimization of Regional Energy System

   Author : Song Han; Jinyue Yan; Eva Thorin; Mats Westermark; Mälardalens högskola; []
   Keywords : annual performance; combined heat and power; drying; ethanol; integration; part-load.; årliga prestation; kraftvärme; torkning; etanol; integration; del-last.; Energy- and Environmental Engineering; energi- och miljöteknik;

   Abstract : The use of biomass-based combined heat and power (CHP) plants is considered by the EU administration to be an effective way to increase the use of renewables in the energy system, to reduce greenhouse gas emissions and to alleviate the dependency on imported fossil fuels. At present in Sweden, most of the CHP plants are operated in part-load mode because of variations in heat demand. READ MORE

7. 10. Analysing the transient operation of the boiler and the TES tank for improving the flexibility in biomass CHP

   Author : Milan Zlatkovikj; Hailong Li; Lei Feng; Mälardalens universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flexibility; combined heat and power CHP ; boiler; thermal energy storage TES ; feed-forward model predictive control FF MPC ; Energy- and Environmental Engineering; energi- och miljöteknik;

   Abstract : The uncertainty in the energy systems due to the continuously growing share of variable renewable energy sources (VRES) increases the requirements for flexibility. From the multiple mechanisms to improve flexibility, biomass-fired combined heat and power plants (CHPs) have gained attention due to their sustainability and high efficiency. READ MORE