By new advancements in vehicle manufacturing vehicle quality evaluation and assurance has become a more critical issue. In present work, the vibration transfer path analysis and vibration path ranking of a car interior has been performed. The method is similar to classical multilevel TPA methods but has distinct differences. The method is named VIVS which stands for Vehicle Interior Vibratio...

A new semiempirical approach is presented for predicting air-to-water oxygen transfer rates in mixed tanks and gravity sewers, using methods adopted from mixing theory. First, a flocculation unit was used to impart selected mean velocity gradients (G) into a completely mixed tank, from which oxygen was first removed, and dissolved oxygen concentrations were measured with time. Regression analys...

The disposal of Waste Activated Sludge is a major problem. The paper presents several disposal routes. The ultimate steps in these routes are indirect drying and subsequent incineration. Although the design of the indirect dryers is straightforward from a required heat input, operating temperature difference between sludge bed and heating medium and the heat transfer coefficient, this coefficie...

In order to illuminate the effect of the scale on the oxygen transfer in stirred tank reactors, a combined study of the hydrodynamics and the mass transfer has been carried out. The air water system was used to study the behaviour of different impellers against the gas phase and its result in the volumetric mass transfer coefficient. The correct prediction of the rate of oxygen transfer by mean...

In this paper, we analyze the thermal radiation and chemical reaction impacts on MHD peristaltic motion of the Eyring-Powell fluid through a porous medium in a channel with compliant walls under slip conditions for velocity, temperature, and concentration. Assumptions of a long wave length and low Reynolds number are considered. The modeled equations are computed by using the perturbation metho...

In the case of multi-component condensation the ‘condensing vapour contains a mixture of components having different boiling points, which condense over a wide temperature range, either in presence of or absence of non-condensing material. In this work, a design algorithm for the condensation of a multi-component vapour mixture in shell side of a shell and tube vertical condenser has been devel...

Microreactor technology shows great potential in the enhancement of liquid–liquid mass transfer, which is important especially when highly viscous fluids are involved. This provides an attractive way to intensify extractive desulfurization (EDS) using ionic liquids (ILs) as effective technique for ultralow-sulfur diesel production. work concerns extraction dibenzothiophene model by [BMIM]PF6 a ...

Flow boiling heat transfer with the refrigerants R-134a and R-245fa in copper microchannel cold plate evaporators is investigated. Arrays of microchannels of hydraulic diameter 1.09 mm and 0.54 mm are considered. The aspect ratio of the rectangular cross section of the channels in both test sections is 2.5. The heat transfer coefficient is measured as a function of local thermodynamic vapor qua...

Nomenclature a = stoichiometric coefficient av = surface-to-volume ratio C;, Cb; = surface and bulk concentration, vol % Da = Damkohler number Eif R = activation energy, K F = steady-state function h = heat-transfer coefficient K, = adsorption equilibrium coefficient k, k0 = reaction rate constant and preexponential factor, respectively kc = mass-transfer coefficient l = apparent reaction order...