The oil in the pipelines must be heated to a certain temperature in some oil fields in north of China. Otherwise, the oil will freeze because of much paraffin mixed in it. A method to detect the direction of the pipeline underground accurately is described in the paper. The temperature of the pipelines can conduct to the surface of the soil and be detected by an uncooled focal plane arrays (UFP...

A numerical simulation for analysis and optimization of the performance NOx production was applied to a natural gas fuel boiler in South Pars Gas Complex. For this purpose, nine actual environmental operational parameters were measured recorded every two hours then averaged daily year. Using thermodynamic laws, important such as body exhaust flue losses, well thermal efficiency exergy efficienc...

Consumption of fossil energy continues to increase and therefore reserves are decreasing, thus the switchover using into new renewable is necessary. Biomass especially from oil palm empty fruit bunches one potential resource as that can mixture with coal fuel for power plant. However, biomass has several weaknesses fuel; it containing high potassium content low heating value. Potassium will rea...

Abstract The objective of this study was to analyse the life cycle coconut oil industry and process improvement alternatives. analysis (LCA) method are based on scope gate gate. This shows that input for production consists copra as main raw material several supporting materials energy. outputs oil, pulp pellets, waste (liquid, solid, gas). total potential GHG emissions, acidification, eutrophi...

This thesis goes into the task of analysing a bubbling fluidized bed (BFB) bark boiler and the structure of its automatic control system. The boiler being discussed is located at Billerud Karlsborg AB, although the results are to be able to be used on any BFB bark boiler. The main objective is to try to answer the following question: Exists there any changes to be made to the current structure ...

In this paper we compare and discuss the performance of a boiler evaporator system when the system is controlled by a traditional PID-type strategy and when the system is enhanced by using fuzzy logic blocks to provide set-points for the system. The strategy used in fuzzy logic controllers (FLCs) is called fuzzy supervisory control and it generates set-points for the conventional controllers. T...