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...

The development of technology has triggered humans to learn knowledge science and increase innovation through various techniques. Basically, a drying system requires so that it can work optimally produce high efficiency work. use cloth wardrobe will run well when its performance is also improved.This experimental research investigated the effects time variation toward dryer system. In addition,...

The purpose of this study was to evaluate the performance Hohenheim Aceh type solar tunnel dryer with application proportional integral derivative (PID) controller for outlet fans . instrumentations used were Aceh, HTC-meter, anemometer, pyranometer, and other supporting equipment s results showed that during drying process irradiation had fluctuat ed , where average 649 W/m 2 temperature in ch...

In this study, an air heated solar collector (AHSC) dryer was designed to determine the drying characteristics of the pear. Flat pear slices of 10 mm thickness were used in the experiments. The pears were dried both in the AHSC dryer and under the sun. Panel glass temperature, panel floor temperature, panel inlet temperature, panel outlet temperature, drying cabinet inlet temperature, drying ca...

Appropriate technology for the conversion of solar radiation to thermal energy is vital for food dehydration. Commercial producers of dried foods need reliable drying technologies for continuity technologies for continuity of production. However, solar radiation is not available whenever it is needed to drying. This limitation discourages many of these producers from investing in solar technolo...

In recent years, there has been growing interest to use computational fluid dynamics (CFD) for exploring dropletparticles interaction under the turbulent flow of air inside spray dryer systems. The final goal is to predict the dried solid particle size and mass flux distributions under the conditions of collision, coalescence and agglomeration of the droplets and particles. The coarse-grained s...