Industrial Parts Dryers Specifications

Help with Industrial Parts Dryers specifications:

Dryer Type

	Your choices are...
	Tray / Cabinet / Tunnel Dryer		Tunnel dryers consist of an oven-like enclosure. The material is loaded onto trucks or trays that are stacked on a movable truck.  The trucks are rolled into the tunnel where the material is dried. Air is drawn in through an inlet duct and heated to the required temperature for drying. The heated air is then distributed from side-to-side, or bottom-to-top, in a circular motion. The system can be automated with the trucks on a trolley, being moved in and out continuously.
	Predryer		Predryers or preheaters provide initial heating or drying of a material before the unit is passed into a larger dryer. Often, radiant heating dryers are used to pre-dry webs before the material is fed into a hot-air dryer.
	Freeze Dryer		Freeze drying, or lyophilization, is used for the reliable preservation of a wide variety of heat sensitive products and demands the highest standards of reliability and control.
	Centrifugal Dryer		Centrifugal dryers use a spinning action to mechanically enhance the removal of water, and to increase drying line speed. Typically, centrifugal dryers are used for discrete parts or products, or after washing of these components.
	Chamber Dryer		Chamber-type dryers consist of a heated chamber that is usually heated to a higher temperature than other dryers.
	Belt Conveyor Dryer		Conveyor drying uses a perforated belt to transfer feed materials through the dryer. Heated air is either passed under and through, or over and through the belt and product bed before being reheated and re-circulated. Units usually have multiple zones, and may have differing airflow in successive zones. Additionally, each zone may use a different temperature profile and control. Saturated or almost saturated air is exhausted from the dryer via a central exhaust duct.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	Heat Source / Transfer:
	Your choices are...
	Waste Heat		Waste heat is heat generated or left over from another process.
	Direct / Convection		Hot air or combusted (or heated) gas) is directly circulated though the material being dried, to convectively heat and evaporate moisture.
	Combustion		Dryers use heat generated by the combustion of gas, oil, biomass, waste products, or other fuels. The combusted gas may heat the material either directly or indirectly.
	Electric		Electrical resistance heating
	Indirect / Contact / Conduction		Walls, tubes, jackets or discs are heated by steam, gas, thermal oil, or hot air. These heated elements transfer their heat to materials that come in contact with them via conduction. Indirect dryers may be useful when contact with combustible gas or hot air is not desirable due to product or process requirements.
	Radiant / Infrared		Dryers use radiant heat generated by electric or gas-fired infrared heaters. Radiant heat dryers are useful for drying surfaces, flat products or web materials where a clear line of sight can be provided. Straight pass infrared dryers are used to pre-dry web materials before these materials are fed into a conventional, direct, hot dryer.
	Steam		Steam dryers are indirect dryers that use equilibrium or superheated steam. Typically, the steam is passed through tubes (as in a steam tube dryer) or through a jacket or wall passage (as in pan or rotary drum dryers).
	Thermal Oil / Fluid		Thermal oil or fluid is heated and used to indirectly transfer heat to a material through a process wall, jackets, discs or other surfaces.
	RF / Microwave / Dielectric		Radio frequency (RF) generators create an alternating electric field between two electrodes. The material to be heated and dried is conveyed or placed between the electrodes where the alternating energy causes polar molecules in the material to continuously reorient themselves to face opposite poles, much like the way bar magnets behave in an alternating magnetic field. The friction resulting from molecular movement causes the material to rapidly heat throughout its entire mass. Areas in the material with greater moisture content heat up and dry faster.
	Other		Other unlisted or specialized heat sources.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
	Secondary Capability
	Your choices are...
	Coating		Dryers allow coating of the material before, during, or after drying.
	Cooling / Freezing		Materials can be cooled or frozen during or after drying.
	Moisturizing / Humidifying		Dryers can restore a level of moisture to an over-dried and possibly brittle product.
	Preheating		Dryers have an integral preheater or preheating capability. For instance, a slurry could be preheated in a tank before introduction to a drum dryer. This technique reduces the heating demands on the drying unit and increasing line speed.
	Washing / Rinsing		Dryers have an integral washing or rinsing capability. For example, in some pharmaceutical applications, the product may be passed through several rinse and dry cycles to remove liquor.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

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Performance Specifications

	Operating Temperature		The operating temperature in the dryer.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Process Rate		The linear rate that the web moves through the dryer.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Air Flow		The velocity that air flows through the dryer.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
	Evaporation Rate		The rate that water and other fluids are removed in the dryer.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

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Application / Media Selections

	Your choices are...
	Abrasives / Ceramics		Equipment is suitable for drying abrasives, green ceramics, refractories, or clay bodies before firing.
	Metallurgical		Equipment is used for drying metal sheet, metal powders, carbide powders, metal casting or finished products, slags or other components used in winning metals (smelting), or scrap metal prior to recycling.
	Pharmaceutical		Equipment is designed specifically for use in processing pharmaceuticals.
	Polymers / Molding		Equipment is suitable for drying plastics, elastomers, rubbers or other polymeric materials in pellet, finish product, or sheet forms.
	Sanitary		Equipment is designed for sanitary applications. Dryers are constructed of an easily sterilized material and are designed specifically for hygienic purposes such as medical, pharmaceutical, or food processing applications. Usually, the equipment is certified by a national or international organization (USDA, FDA, etc.), but this is not required.
	Electronics / Semiconductors		Equipment is used in semiconductor or electronic manufacturing (e.g., the drying of wafers after etching and rinsing steps).
	Wood / Wood Products		Equipment is used for drying lumber, forest products (logs), wood boards, particle board, plywood or wood chips
	Other		Other unlisted or proprietary applications.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

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