Dioxins in the combustion gas of municipal solid waste incinerators (MSWIs) are resynthesized when the combustion gas passes from the outlet exaust gas boiler to the outlet gas duct. The objective of the study was to estimate if the suppression of the formation of dioxins depends on the inlet gas temperature and diameter and/or temperature of droplet spray water using an actual incinerator oper...

Water obtained from any source may contain impurities induced by erosion, dissolved minerals, dissolved gases and material produced from organic matter decomposing. If the amount of these substances exceed a certain limit, not only the water would not be potable, but the water containing the material will not be suitable to be used in most applications, or at least before treatment cannot be ap...

high levels of turbidity and suspended solids are the major disadvantages of aerated lagoons. aerated lagoon effluent filtration was investigated by horizontal roughing filter (hrf). removal efficiencies were determined by examining total phosphorus (tp) and total kjeldahl nitrogen (tkn) from hrf influent and effluent, simultaneously. hrf pilot system located on effluent pump station of qom was...

Abstract The tee structure is an integral part of the water distribution system, and pollutants diffuse in complex ways within structure. In this paper, diffusion pattern contaminants was examined using a combination numerical simulations experiments. coefficient variation chosen as evaluation indicator, uniform length (LU) defined to quantify location Several factors were used investigate poll...

In the present study, a tailor-made plug-flow reactor with 3D-printed parts and multi-position monitoring of pH-value, conductivity ORP at inlet, center outlet part is introduced applied in anaerobic digestion order to investigate whether i) formation gradients can be detected, ii) ideal single or multiple spots for location sensors during an acidification process identified, iii) spatial gradi...

A low speed, open circuit, laboratory wind tunnel has been redesigned for use in turbine blade cooling experiments. The two dimensional contraction was designed using a sixth order polynomial. This paper outlines the process of design optimisation, using Computational Fluid Dynamics (CFD) to model the contraction. The parameters that were varied were the location of the point of inflection and ...

intake system design as well as inlet ports and valves configuration is of paramount importance in the optimal performance of internal combustion engines. in the present study, the effect of inlet ports design is investigated on om-457la diesel engine by using a cfd analysis and the avl-fire code as well. a thermodynamic model of the whole engine equipped with a turbocharger and an intercooler ...

In conventional vapor compression systems, electronic expansion valves (EXVs) are used for refrigerant flow control. Subcooled refrigerant enters the expansion device and is expanded to the evaporation pressure while the valve opening is modified to achieve the desired mass flowrate. The relationship between the inlet and outlet conditions, the opening, and the mass flowrate has been extensivel...

Abstract The cross joint is one of the standard connection types for urban water supply pipelines. A pipeline containing joints was taken as research object using NaCl tracer. turbulent mixing characteristics and pollutants at pollutant migration diffusion were studied analysed by numerical analysis experimental measurement. primary purpose to check comprehensive influence six factors pipe diam...