The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
To realize the high control efficiency and the low energy consumption for the present drying oven control on the condition of a great number of complex control parameters and the single control method, this paper presented a drying oven control method on the extension control. First the drying oven basic element model was built including the control features. Secondly, the correlation calculation...
A study was conducted using LabPlant SD-06 mini-spray dryer of laboratorial scale to produce spray-dried roselle-pineapple powder. Roselle calyces and pineapples were extracted under optimum condition. Three different maltodextrin DE 10 concentrations (3%, 5% and 10%) were added (w/w) as the encapsulating agent prior to spray drying. Inlet temperatures were varied at 140??C, 160??C, 180??C and 200??C...
In this paper a dynamic model of a drying process, specifically established for model predictive control (MPC) strategy, is derived. An MPC controller is implemented at the real plant and the performance of classical PID feedback control and MPC is compared. This paper especially addresses the following issues: 1. Modelling of a continuous convective through-air-drying process for viscose staple fibres...
For characterization of the procedure for preparation of dried radix rehmanniae, the processing procedure was simulated in laboratory by varying the dried temperature from 40degC to 100degC during more than 50 h. The attenuated total reflectance (ATR) FTIR of the sample at different time periods were measured, then the measured IR spectra were pretreated by continuous wavelet transform (CWT), and...
The presence of condensate in dryer cylinders during the start up produces an important increase of the required torque and power that adversely affects the drive and mechanical components of the drive train. The paper presents a complete evaluation of the condensate effects in an experimental setup with a 380 mm diameter cylinder, during operation without and with spoiler bars, and covering from...
The branchlet and nutshell of Camelliaoleifera are produced in quantity while picking and processing the nut each year. However, the abundant branchlet and nutshell of C.oleifera are still underutilized and hence wasted to pollute environment. Therefore, GC/MS technology was used to analyze the top value-added components from the branchlet and nutshell of C.oleifera. After treated with freeze-drying,...
A new device for correction of eyelid problems due to facial palsy was studied. Ineffectiveness of the upper eyelid of the paralyzed side for totally closure is called lagophthalmos which may cause drying and irritation rabbits were injected with local anesthetics to induce temporary facial palsy and Lagophthalmos. In order to provide functionality to the upper eyelids, Ferromagnetic pieces were placed...
The aim of this work consists in investigating the sewage sludge solar drying speed with the objective to find out the natural solar drying application possibilities in different seasons. The sewage sludge samples were drying in a lab greenhouse without active ventilation during summer, autumn and winter and the correlations between drying speed and weather were found out. Furthermore, surface configuration...
Drying characteristics of sewage sludge were investigated using hot air of a temperature range of 50~80degC and an air velocity range of 0.60~1.48 m/s at a laboratory scale dryer. Several mathematical models available in the literatures were fitted to the experimental data by multiple nonlinear regression analysis. Four statistical parameters: coefficient of determination (R2), reduced chi-square...
This paper presents the application of fuzzy logic controller (FLC) to a grain dryer plant. Grain dryer plant is very difficult to control due to long delay process and non-linear behaviour. The controller consists of two inputs; error between actual grain moisture content and set-point, and rate of change of error. There is one fuzzy output that is used to drive the grain flow rate. Simulation tests...
The effect of temperature and heating rate on density, pore size, porosity, bending strength and water flux of sintered Al2O3 body was studied in this research. Carboxymethyl Cellulose (CMC) 3% by Al2O3 weight was used as additive. The Al2O3 particle sizes were varied at Al2O3 5 mum and the mixture of Al2O3 0.7 mum (50 wt%) and Al2O3 5 mum (50 wt%). The mixture was then extruded, dried and sintered...
The mathematical model, the effectivity method and calculation program of non-stationary drying process of material in a pyramidal MWF chamber are developed.
In order to heat and dry thin material in multimode cavity resonator, circular polarizing patch array to generate surface wave is developed. The patch array is valid to make the electric field distribution uniform inside the cavity. The heating and drying material is set and moved on the surface of the patch array substrate. The high electric field by surface wave on the patch makes the low loss thin...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.