rotary atomizers are commonly used in spray dryers to atomize feed. one destructive effect of wheel rotation is the creation of a vacuum inside the wheel that conducts hot air from the chamber into the wheel and can lead to atomizer blockage and an explosion. the present work determined the air-pumping characteristics of a rotary atomizer with a 50 mm wheel diameter. the vacuum pressure and pow...

monitoring the effective parameters of drying crops is necessary to evaluate and determine system performance under real conditions. hence, a monitoring system was constructed to determine the performance of a vegetation forced-convection solar dryer. digital temperature sensors were set up in the air inlet and outlet of the collector and the air outlet of the drying chamber. a program was writ...

Ammonium perchlorate particles have been dried in a laboratory spouted bed dryer (screen-bottomed type) which is categorized as a fluidized bed dryer. The solid particles obtained in this process of drying were semi-porous and known as the group D of Geldart classification. The variations of moisture content with resident time, the effects of bed height on the pressure dro...

In this research, an industrial spray dryer was used and the effects of atomizer speed on the physicochemical properties of milk powder, the textural and sensory characteristics of white cheese made from this milk powder were evaluated. For this purpose, whole milk was converted into powder by using three different speeds (10,000, 11,000, and 12,000 rpm). The results showed that by increasing a...

This paper proposes an indirect-mode forced convection solar dryer equipped with a PV/T air collector. The collector generates both heated and electrical energy, which are used to force in the dryer. Experiments were carried out on selected tomato slices for temperature humidity readings as well masses of dried samples instantaneously recorded two days. A thermal analysis was performed drying s...

Hebel brick is used in making the walls of house. One materials hebel bricks sand. The water content sand will affect quality bricks. less sand, better In order to get with a little content, it necessary do drying process. To overcome this problem, rotary dryer for using renewable energy, particular biomass energy sources was designed. It can be placed quarry near river or beach. designed have ...

In preparation for routine deployment in a network of greenhouse gas monitoring stations, we have designed and tested a simple method for drying ambient air to near or below 0.2 % (2000 ppm) mole fraction H2O using a Nafion dryer. The inlet system was designed for use with cavity ring-down spectrometer (CRDS) analyzers such as the Picarro model G2301 that measure H2O in addition to their princi...

background: microwave thermotherapy has been gradually used in radiotherapy and it is reported that microwave radiation increases bone demineralization rate independently of temperature. furthermore, it becomes more and more widespread that the damage caused by the synergistic effect of microwave radiation and hypergravity. the experiment was designed to investigate the effect of microwave radi...

who offered both ever-insightful comments and encouragement. My committee member Matthew Dryer, who spent much of his time reading and commenting on this project, in spite of his extremely busy schedule. My committee member Leonard Talmy, who gave me support and warm encouragement.