Archive for chp
Abstract:
An objective, but broadly sympathetic, view has been taken of the future of cogeneration in the UK. Although its current problems, appear to have resulted from the market economy, the basis to these difficulties is structural. These arguments are supported by discussions on the electrical and CHP efficiencies of various prime movers. These include IC engines, gas turbines, large scale power plants, nuclear CHP, and micro CHP systems. The future could be difficult too, with CCGT plants being developed to reach electrical efficiencies in the 70-75% range, natural gas prices going even higher, and energy conservation reducing heat demand to a fraction of that today. Renewable heat is both a challenge and an opportunity. The way cogeneration will need to change varies from country-to-country.
Only Denmark appears to have a well thought out policy, in which fossil fuels will be phased out and biomass will supply a greater fraction of the fuel required for CHP and pure district heating schemes. The UK has a huge natural gas infrastructure which creates serious problems for the advancement of CHP in this country. For other European countries, which have extensive town based district heating systems there is a strong argument for basing these on advanced CCGT-Cogeneration or coal based steam plant with CHP. The biggest concern for CHP is that, because it is fossil fuel based, the long term prospects must be in some doubt.
For full paper see: http://www.claverton-energy.com/?dl_id=405
NOTE – THE PAPER CONTAINS PICTURES WHICH WILL ONLY APPEAR IF YOU OPEN IT IN WORD WITH “WEB VIEW” ENABLED.
to place your power plant FOR SALE or WANTED ad, register on the site and wait to be made an author, then post it. Instructions on the menu ” HOW TO”.
6,6MWe CHP station :in storage since dismantled and stored by generator specialists in Barcelona.
- 3 Wartsila 12V25G at 2.2MW at 6.6kV, plus waste heat boiler with fired section. 10barg steam. ( estimate 8-10 ton/hr)
- 2 x Thermal oil heaters which are in the exhaust stream.
- CHP Heating water system from the Jacket water and lube oil.
- Aftercooler and heat dump radiators.
- 6.6/25kV distribution transformer
- 6.6/0.4kV auxiliaries transformer
- All HV, LV and control panels.
- SCADA system and PC’s
- 6.6/25kV step up power transformer Read More→
Owning and Operating Costs of Waste and Biomass Power Plants
Posted by: | CommentsClaverton Energy Conference, 23/24/25th October 2009
Dave Andrews, DAEC
(Note - this is a general note about one manufacturer. For a a more detailed and recent survey of suitable manufactuers, send an email to tyningroad@gmail.com)
Here are some broad brush head line figures for the owning and operating of a particular kind of advanced staged combustion power plant, obtained from a leading manufacturer, suitable for biomass, waste materials and waste wood. The process is essential combustion, but is referred to as gasification / combustion, meaning the material is first charred on a grate, with the off syngas being burnt in a separate adjacent and low level refractory chamber. The char is then burnt at a later stage as it moves down the great. This leads to greater burn up of fuel and lower emissions. The syngas combustion is maintained within the ceramic, and special gas flows prevent the contaminants in the gases fouling and degrading the ceramics.
This is a big issue in conventional plants since refractories have to be replaced every few years due to chlorine attack.
