Search for dissertations about: "payback"

Showing result 16 - 20 of 30 swedish dissertations containing the word payback.

2. 16. 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

4. 17. Product innovation in small established enterprises : Managing processes and resource scarcity

   Author : Lars Löfqvist; Lars Bengtsson; Jenny Janhager-Stier; Matti Kaulio; Helena Forsman; KTH; []
   Keywords : innovation process; small enterprises; product innovation; resources; resource scarcity; SMEs; bootstrapping; cash flow; commercialization; design process; lead users; motivation; NPD; small companies; small firms; innovation management; Penrose; resource dependence theory;

   Abstract : This thesis examines product innovation processes in small established enterprises. The research questions are: (1) what motivates small established enterprises to innovate, (2) how do small established enterprises perform product innovation, and (3) how do small established enterprises manage resource scarcity in their product innovation processes? To answer the research questions, a multiple case study approach was chosen with three small established enterprises as cases and different product innovation processes as embedded units of study. READ MORE

5. 18. Environmental Assessment of Battery Systems: Critical Issues for Established and Emerging Technologies

   Author : Carl Johan Rydh; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photovoltaic cells; battery; environmental indicators; substance flow analysis; energy analysis; metal recycling; energy efficiency; materials management; rechargeable; life cycle assessment; renewable energy;

   Abstract : Energy and material flows associated with portable and industrial rechargeable batteries have been quantified in a life-cycle perspective, as guidance for development of battery systems. The study included portable batteries based on nickel-cadmium, nickel-metal hydride and lithium-ion. READ MORE

6. 19. Techno-economic viability of battery storage for residential applications

   Author : Masoume Shabani; Jinyue Yan; Erik Dahlquist; Fredrik Wallin; Daniel Brandell; Mälardalens universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy- and Environmental Engineering; energi- och miljöteknik;

   Abstract : Battery storage has emerged as a promising solution in various energy systems. However, challenges exist regarding the viability of batteries in practical stationary applications. READ MORE

7. 20. Performance Analysis and Optimal Design of Heat Exchangers and Heat Exchanger Networks

   Author : Lieke Wang; Värmeöverföring; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; applied thermodynamics; Thermal engineering; flexibility; pinch technology; optimization; heat exchanger networks; thermal efficiency; multi-stream; plate-fin heat exchangers; plate heat exchangers; steam condensation; heat exchangers; Termisk teknik; termodynamik; Gases; fluid dynamics; plasmas; Gaser; fluiddynamik; plasma;

   Abstract : This thesis presents a study on performance analysis and optimal design of heat exchangers and heat exchanger networks. The study includes an experimental investigation of steam condensation in plate heat exchangers, optimal design of plate heat exchangers and plate-fin heat exchangers, and optimization of heat exchanger networks. READ MORE