| 1. |
- Johnsson, Filip, 1960, et al.
(författare)
-
Regional Distribution of Renewable Energy and the Abundance of Fossil Fuels
- 2016
-
Ingår i: Clean Coal Technology and Sustainable Development. Proceedings of the 8th International Symposium on Coal Combustion (ISCC). Tsinghua Univ, Beijing, Peoples rep of China, 19-22 Juli, 2015. - Singapore : Springer Singapore. - 9789811020223 ; 0, s. 11-19
-
Konferensbidrag (refereegranskat)abstract
- This paper discusses the extent to which technologies developed for the exploitation of renewable energy sources ( RES) can be expected to substitute for fossil fuels, toward the goal of reducing usage of fossil fuels. We compare the changes in fuel mix for primary energy consumption and for electricity generation over the past decade between regions with large and small domestic fossil fuel resources. We conclude that for newly industrialized countries rich in domestic fossil fuels, there is only a moderate or no increase in primary energy from RES, coupled with significant increases in primary energy consumption from fossil fuels although recent but preliminary data show these trends to weaken. We use the notion of a "fossil fuel curse," which implies that it is not obvious that countries with large domestic fossil fuel resources will allow these assets to remain unexploited. This obviously imposes a tremendous threat to climate change mitigation leaving only two choices for fossil-rich economies: leave the fossil fuels in the ground and apply carbon capture technologies, both options calling for a sufficiently high cost to emit CO2 or other policy intervention in order to take place.
|
|
| 2. |
- Sette, Erik, 1984, et al.
(författare)
-
3-Dimensional Particle Tracking in a Fluid Dynamically Downscaled Fluidized Bed Using Magnetoresistive Sensors
- 2016
-
Ingår i: Clean Coal Technology and Sustainable Development. Proceedings of the 8th International Symposium on Coal Combustion (ISCC). Tsinghua Univ, Beijing, Peoples rep of China, 19-22 July, 2015. - Singapore : Springer Singapore. - 9789811020223 ; 0, s. 317-322
-
Konferensbidrag (refereegranskat)abstract
- This paper presents a measurement technique for continuous tracking of particles in 3-dimensional bubbling fluidized beds operated according to scaling laws. By applying Glicksman's full set of scaling laws to both bulk solids and tracer particle, the bed is assumed to be fluid dynamically similar to a combustor operated at 900 C-circle with the tracer particle corresponding to a fuel particle with properties similar to anthracite coal. Two different gas distributors with varying pressure drop are used to investigate the influence of bed design on fuel mixing. Flow structures formed around rising gas bubbles, the so-called bubble paths, are identified, and the tracer particle traverses the entire bed for a gas distributor yielding a high pressure drop. For a gas distributor yielding a low pressure drop, flow structures are less pronounced, and the tracer particle is not circulating the entire bed.
|
|
