Oxy-fuel combustion is one of the energy utilization technologies for CO2 capture which is ready for commercial demonstration. System steady-state simulation is an effective tool to help us understand the thermodynamic properties and adjust operation conditions of oxy-fuel combustion system. Moreover, dynamic simulation is essential for understanding the dynamic characteristics of the system, w...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Teemu Sarjovaara Name of the doctoral dissertation Studies on Heavy Duty Engine Fuel Alternatives Publisher School of Engineering Unit Department of Energy Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 208/2015 Field of research Internal combustion engines Manuscript submitted 11 September 2015 D...

The influence of various waste mixtures on the combustion process in a grate furnace was investigated at the test plant TAMARA. Measurements were carried out inside the combustion chamber by monitoring temperatures and sampling gaseous combustion products and heavy metals. The data were verified by element and energy bal­ ances. The different fuel fractions influence the combustion process by p...

A fuel cell can be thought of as a cold-combustion power source that generates electrical energy directly from (stored) chemical energy. Due to minimal heat transfers, it is unfettered by conversion-efficiency limitations characteristic of hot-combustion devices. Unlike batteries, but similar to internal combustion engines, a fuel cell is a continuous-flow system in which fuel and oxidant are e...

Non-deforestation fire – i.e., fire that is typically followed by the recovery of natural vegetation – is arguably the most influential disturbance in terrestrial ecosystems, thereby playing a major role in carbon exchanges and affecting many climatic processes. The radiative effect from a given atmospheric CO2 perturbation is the same for fire and fossil fuel combustion. However, major differe...

Hypersonic air-breathing engines rely on scramjet combustion processes, which involvehigh speed, compressible, and highly turbulent flows. The combustion environment andthe turbulent flames at the heart of these engines are difficult to simulate and study in thelaboratory under well controlled conditions. Typically, wind-tunnel testing is performedthat more closely approximates ...

Micro-cogeneration with locally produced biogas from waste is a proven technique for supporting the decarbonization process. However, strongly variable composition of can make its use in internal combustion engines quite challenging. Dual-fuel offer advantages over conventional SI and diesel engines, but there are still issues to be addressed, such as low-load thermodynamic efficiency nitrogen ...

the hcci combustion process is initiated due to auto-ignition of fuel/air mixture which is dominated by chemical kinetics and therefore fuel composition has a significant effect on engine operation and a detailed reaction mechanism is essential to analysis hcci combustion. a single zone-model permits to have a detailed chemical kinetics modeling for practical fuels. in this study a single-zone ...