|Ultra High Efficiency Power Generation from Victorian Coal|
|By Louis J Wibberley, CSIRO Energy Techology|
|Continued from previous page|
- MRC from Yallourn coal combusts under engine conditions to produce the same highly bimodal flyash size distribution as in pf boilers – micron size sulphate fume, and large mostly fused flyash comprising either iron-rich cenospheres or smaller fused silicates. Only quartz particles larger than 20µm remain essentially unfused.
- Metal wear tests have shown that Victorian coal and ash create wear scars on the engine cylinder that are similar to or smaller than those produced using clean lubricant.
- Achieving high thermal efficiency with DICE will depend on optimising a range of operational factors. R&D is underway to maximise engine efficiency using fuel pre-heating, optimised fuel injection profiles, and blast atomisation of higher calorific value paste-type MRC. With successive generations of the fuel cycle, an overall thermal efficiency of around 54 per cent LHV (52 per cent HHV) is expected – which will reduce CO2 intensity by more than 50 per cent compared to current plants.
- Techno-economic analysis shows that DICE is likely to give the lowest cost of electricity for likely future gas and carbon prices. A range of carbon capture options were included in the study.
|A key objective of the project is to develop an engineered proposal for a Victorian DICE demonstration that could lead to commercial deployment before 2018. |
Discussions have started with possible participants in the demonstration program. MAN Diesel and Turbo has taken the lead in developing a program that could lead to a production-ready low speed engine within three years.
The program is being developed with joint MAN and Australian industry funding, with the opportunity for other parties to contribute.
|Above: Air blast atomisation of brown coal MRC paste in a 10 MPa chamber (left without blast, right with)|
|A DICE development network is being established to support, facilitate and help integrate DICE pilot / demonstration projects internationally. |
The DICE development network intends to participate in shared development of DICE, by facilitating integration of the development of DICE and its associated fuel cycle (from carbon fuel resources through to delivered power), to fast track commercialisation, and to maximise the benefits that the technology provides.
More information on this network can be obtained from BCIA or the email below.
|For more information, contact:|
Dr Louis Wibberley
Leader, Advanced Carbon Power
CSIRO Energy Technology
|For more information on the DICE project, go to the previous page of this e-newsletter.|