The structural and physical stability of solid dispersions have not been adequately explored during spray drying manufacturing processes. In this study a wide range of compositions of naproxen/PVP-VA 64 (poly(1-vinylpyrrolidone-co-vinyl acetate)) and miconazole/PVP-VA 64 solid dispersions prepared by different laboratory spray dryers were collected from various selected locations and used to in...

1. APPLICATION OF FULL FACTORIAL DESIGN IN THE MEASUREMENT OF DRYING RATES OF A ROTARY DRYER Drying is a physical separation process which enables to remove the liquid phase from a solid, semisolid or liquids by means of thermal energy. The aim of the experiment is to observe how various operational parameters affect the drying process in a rotary dryer. In drying process, heat is transferred b...

The main objective of the work is study process dehydration fruits and vegetables, using two different types equipment for dehydration: convective dryer, equipped with drying trays; microwave field instalation, continuous flow. In case divided products will be placed evenly on trays following specific parameters determined: initial final humidity products; air temperature; air. equipment, in a ...

Abstract The urbanised living in Malaysia is progressing toward having clothes dryers as essential household equipment. major problems with the commercially available dryer are high-power consumption and possible damage to environment. This study aims mitigate these issues an eco-friendly heat pump dryer. principle derived based on waste from condenser side of indoor air conditioner units. anal...

Application of tray dryer is widely used in agricultural drying because of its simple design and capability to dry products at high volume. However, the greatest drawback of the tray dryer is uneven drying because of poor airflow distribution in the drying chamber. Implementing the proper design of a tray dryer system may eliminate or reduce non-uniformity of drying and increases dryer efficien...

An experimental methodology was developed to improve the energy design of paddle dryers for sewage sludges. A laboratory batch dryer with a vertical agitator has been especially designed and instrumented to determine the heat flux densities. To determine the drying kinetic and the evaporating flow rates, the specific heat and the total heat of desorption of the sludge were measured using calori...

BACKGROUND Hair dryers are commonly used and can cause hair damage such as roughness, dryness and loss of hair color. It is important to understand the best way to dry hair without causing damage. OBJECTIVE The study assessed changes in the ultra-structure, morphology, moisture content, and color of hair after repeated shampooing and drying with a hair dryer at a range of temperatures. METH...

A mathematical model of the coupled heat and mass transfer has been developed to calculate the drying process in a mixed-flow grain dryer. Periodical discharge operation of the dryer causes strong variations of temperature and moisture of the material. A series of quasi-stationary drying experiments have been carried out. These results are used to test and to improve the dryer model. The calcul...

This study was conducted to determine that carrot powder obtain by different drying methods (oven and vacuum-freeze dryer) of carrot unfit for human consumption that whether feed additives in animal nutrition or not. Carrots randomly divided 2 groups. First group was dried by using oven, second group was by using vacuum freeze dryer methods. Dried carrot prepared from fresh carrot was analysed ...