Direct Heated Dryers - Revision history

Admin at 00:03, 2 August 2012

2012-08-02T00:03:44Z

← Older revision		Revision as of 18:03, 1 August 2012
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	[[File:Direct_Heated_Dryers.jpg\|thumb\|200px\|right\|Direct Heated Dryers]]		[[File:Direct_Heated_Dryers.jpg\|thumb\|200px\|right\|Direct Heated Dryers]]
	The '''Direct Heated Dryers''' follow the direct heating or drying process. This Direct heating and drying refers to combustion products mixing directly with the process environment (typically process solids and a forced “air” stream). Because radiation transfer is rapid, typically at high temperature, and ceases upon reaching a boundary (the outer layer of process matter), it is often undesirable and unnecessary. Therefore, natural and forced convection heat transfer engineering may dominate dryer designs. There are a wide variety of process dryers, kilns, calciners, ovens, etc. that incorporate an even greater range of combinations in forced convection, radiation, and conduction (through the material) heat transfer principles to satisfy the product requirements.		The '''Direct Heated Dryers''' follow the direct heating or drying process. This Direct heating and drying refers to combustion products mixing directly with the process environment (typically process solids and a forced “air” stream). Because radiation transfer is rapid, typically at high temperature, and ceases upon reaching a boundary (the outer layer of process matter), it is often undesirable and unnecessary. Therefore, natural and forced convection heat transfer engineering may dominate dryer designs. There are a wide variety of process [[dryers]], [[kilns]], [[calciners]], [[ovens]], etc. that incorporate an even greater range of combinations in forced convection, radiation, and conduction (through the material) heat transfer principles to satisfy the product requirements.


	==~~='''Functions'''=~~==		==Function==
	In all cases, however, the heat energy supplied to a system must perform the following four tasks:		In all cases, however, the heat energy supplied to a system must perform the following four tasks:

Helal at 16:26, 1 August 2012

2012-08-01T16:26:40Z

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 [[File:Direct_Heated_Dryers.jpg|thumb|200px|right|Direct Heated Dryers]]
-==='''Advanced functions'''===
+* Heat the dryer feed to the “light” component’s vaporization temperature.
-* Easy to move
+* Vaporize and/or free the liquid/byproducts above the solids’ surface.
-* Folds flat for an easy storage
+* Heat the solids to the final desired temperature, and for the desired duration of time.
-* 8 electric heating rods for a faster drying
+* Heat the vapor to the final desired temperature.

Helal at 16:11, 1 August 2012

2012-08-01T16:11:46Z

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 * Please start editing this page after the /noinclude
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-This page is still empty. If you know something about this product, please share your knowledge with others.
+[[File:Direct_Heated_Dryers.jpg|thumb|200px|right|Direct Heated Dryers]]

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