Compressed Air Dryers - Revision history

Helal at 03:08, 4 August 2012

2012-08-04T03:08:46Z

← Older revision		Revision as of 21:08, 3 August 2012
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	==Deliquescent Dryer==		==Deliquescent Dryer==
	A deliquescent dryer typically consists of a pressure vessel filled with a hygroscopic media that absorbs water vapor. The media gradually dissolves—or deliquesces—to form a solution at the base of the pressure vessel. The liquid must be regularly drained from the vessel and new media must be added. The media is usually in tablet or briquette form.		A deliquescent dryer typically consists of a pressure vessel filled with a hygroscopic media that absorbs water vapor. The media gradually dissolves—or deliquesces—to form a solution at the base of the pressure vessel. The liquid must be regularly drained from the vessel and new media must be added. The media is usually in tablet or briquette form.
	Deliquescent dryers have no moving parts and don't require electrical power for operation. Common applications therefore often involve remote, hazardous, or mobile worksites. Deliquescent dryers are used for removing water vapor from compressed air, natural gas, and waste gases such as landfill gas and digester gas.		Deliquescent dryers have no moving parts and don't require electrical power for operation. Common applications therefore often involve remote, hazardous, or mobile worksites. Deliquescent dryers are used for removing water vapor from compressed air, natural gas, and waste gases such as landfill gas and digester gas.
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	==Desiccant Dryer==		==Desiccant Dryer==
	The term [[Desiccant Dryers]] refers to a broad class of dryers. Other terms commonly used are regenerative dryer and twin tower dryer, and to a lesser extent [[Absorption Dryers]].		The term [[Desiccant Dryers]] refers to a broad class of dryers. Other terms commonly used are regenerative dryer and twin tower dryer, and to a lesser extent [[Absorption Dryers]].
	The compressed air is passed through a pressure vessel filled with an absorbent media such as activated alumina, silica gel, molecular sieve or other desiccant material. The desiccant can bring the dew point of the water vapor in the air down to −40 °C (−40 °F) or below. This means that the air will not condense (deposition) water until it is cooled to −40 °C (−40 °F). In practice, two cylinders with desiccant are used; one is drying the air, while the other vessel is being regenerated. The switching of the vessels and the regeneration sequence is typically done automatically via solenoid operated valves. The regeneration of the desiccant vessel can be during three different methods:		The compressed air is passed through a pressure vessel filled with an absorbent media such as activated alumina, silica gel, molecular sieve or other desiccant material. The desiccant can bring the dew point of the water vapor in the air down to −40 °C (−40 °F) or below. This means that the air will not condense (deposition) water until it is cooled to −40 °C (−40 °F). In practice, two cylinders with desiccant are used; one is drying the air, while the other vessel is being regenerated. The switching of the vessels and the regeneration sequence is typically done automatically via solenoid operated valves. The regeneration of the desiccant vessel can be during three different methods:
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	==Membrane Dryer==		==Membrane Dryer==
	Membrane dryer refers to a dehumidification membrane that removes water vapor from compressed air.		Membrane dryer refers to a dehumidification membrane that removes water vapor from compressed air.
	Typically, the compressed air is first filtered with a high-quality [[Coalescing Filters\|Coalescing Filter]]. This filter removes liquid water, oil and particulate from the compressed air. The water vapor–laden air then passes through the center bore of hollow fibers in the membrane bundle. At the same time, a small portion of the dry air product is redirected along the outside surface of the fibers to sweep out the water vapor which has permeated the membrane. The moisture-laden sweep gas is then vented to the atmosphere, and clean, dry air is supplied to the application. The membrane air dryers are designed to operate continuously, 24 hours per day, 7 days per week. Membrane air dryers are quiet, reliable and require no electricity to operate.		Typically, the compressed air is first filtered with a high-quality [[Coalescing Filters\|Coalescing Filter]]. This filter removes liquid water, oil and particulate from the compressed air. The water vapor–laden air then passes through the center bore of hollow fibers in the membrane bundle. At the same time, a small portion of the dry air product is redirected along the outside surface of the fibers to sweep out the water vapor which has permeated the membrane. The moisture-laden sweep gas is then vented to the atmosphere, and clean, dry air is supplied to the application. The membrane air dryers are designed to operate continuously, 24 hours per day, 7 days per week. Membrane air dryers are quiet, reliable and require no electricity to operate.
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	==Usages==		==Usages==
	* Drying air for use in commercial or industrial processes that demand dry air		* Drying air for use in commercial or industrial processes that demand dry air
	:*Telecomm industry (pressurizes its underground cables to repel moisture and avoid shorts		:*Telecomm industry (pressurizes its underground cables to repel moisture and avoid shorts

Helal at 12:28, 30 July 2012

2012-07-30T12:28:52Z

← Older revision		Revision as of 06:28, 30 July 2012
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	==Refrigerated ~~dryer~~==		==Refrigerated Dryer==
	Refrigeration dryers employ two heat exchangers, one for air-to-air and one for air-to-refrigeration. The goal of having two heat exchangers is that the cold outgoing air cools down the hot incoming air and reduces the size of compressor required. At the same time the increase in the temperature of outgoing air prevents re-condensation.		Refrigeration dryers employ two heat exchangers, one for air-to-air and one for air-to-refrigeration. The goal of having two heat exchangers is that the cold outgoing air cools down the hot incoming air and reduces the size of compressor required. At the same time the increase in the temperature of outgoing air prevents re-condensation.

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	==Deliquescent ~~dryer~~==		==Deliquescent Dryer==
	A deliquescent dryer typically consists of a pressure vessel filled with a hygroscopic media that absorbs water vapor. The media gradually dissolves—or deliquesces—to form a solution at the base of the pressure vessel. The liquid must be regularly drained from the vessel and new media must be added. The media is usually in tablet or briquette form.		A deliquescent dryer typically consists of a pressure vessel filled with a hygroscopic media that absorbs water vapor. The media gradually dissolves—or deliquesces—to form a solution at the base of the pressure vessel. The liquid must be regularly drained from the vessel and new media must be added. The media is usually in tablet or briquette form.
	Deliquescent dryers have no moving parts and don't require electrical power for operation. Common applications therefore often involve remote, hazardous, or mobile worksites. Deliquescent dryers are used for removing water vapor from compressed air, natural gas, and waste gases such as landfill gas and digester gas.		Deliquescent dryers have no moving parts and don't require electrical power for operation. Common applications therefore often involve remote, hazardous, or mobile worksites. Deliquescent dryers are used for removing water vapor from compressed air, natural gas, and waste gases such as landfill gas and digester gas.
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	==Desiccant ~~dryer~~==		==Desiccant Dryer==
	The term [[Desiccant Dryers]] refers to a broad class of dryers. Other terms commonly used are regenerative dryer and twin tower dryer, and to a lesser extent [[Absorption Dryers]].		The term [[Desiccant Dryers]] refers to a broad class of dryers. Other terms commonly used are regenerative dryer and twin tower dryer, and to a lesser extent [[Absorption Dryers]].
	The compressed air is passed through a pressure vessel filled with an absorbent media such as activated alumina, silica gel, molecular sieve or other desiccant material. The desiccant can bring the dew point of the water vapor in the air down to −40 °C (−40 °F) or below. This means that the air will not condense (deposition) water until it is cooled to −40 °C (−40 °F). In practice, two cylinders with desiccant are used; one is drying the air, while the other vessel is being regenerated. The switching of the vessels and the regeneration sequence is typically done automatically via solenoid operated valves.		The compressed air is passed through a pressure vessel filled with an absorbent media such as activated alumina, silica gel, molecular sieve or other desiccant material. The desiccant can bring the dew point of the water vapor in the air down to −40 °C (−40 °F) or below. This means that the air will not condense (deposition) water until it is cooled to −40 °C (−40 °F). In practice, two cylinders with desiccant are used; one is drying the air, while the other vessel is being regenerated. The switching of the vessels and the regeneration sequence is typically done automatically via solenoid operated valves. The regeneration of the desiccant vessel can be during three different methods:
	The regeneration of the desiccant vessel can be during three different methods:


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	==Membrane ~~dryer~~==		==Membrane Dryer==
	Membrane dryer refers to a dehumidification membrane that removes water vapor from compressed air.		Membrane dryer refers to a dehumidification membrane that removes water vapor from compressed air.
	Typically, the compressed air is first filtered with a high-quality [[Coalescing Filters\|Coalescing Filter]]. This filter removes liquid water, oil and particulate from the compressed air. The water vapor–laden air then passes through the center bore of hollow fibers in the membrane bundle. At the same time, a small portion of the dry air product is redirected along the outside surface of the fibers to sweep out the water vapor which has permeated the membrane. The moisture-laden sweep gas is then vented to the atmosphere, and clean, dry air is supplied to the application. The membrane air dryers are designed to operate continuously, 24 hours per day, 7 days per week. Membrane air dryers are quiet, reliable and require no electricity to operate.		Typically, the compressed air is first filtered with a high-quality [[Coalescing Filters\|Coalescing Filter]]. This filter removes liquid water, oil and particulate from the compressed air. The water vapor–laden air then passes through the center bore of hollow fibers in the membrane bundle. At the same time, a small portion of the dry air product is redirected along the outside surface of the fibers to sweep out the water vapor which has permeated the membrane. The moisture-laden sweep gas is then vented to the atmosphere, and clean, dry air is supplied to the application. The membrane air dryers are designed to operate continuously, 24 hours per day, 7 days per week. Membrane air dryers are quiet, reliable and require no electricity to operate.
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	==~~Usage~~==		==Usages==
	* Drying air for use in commercial or industrial processes that demand dry air		* Drying air for use in commercial or industrial processes that demand dry air
	:*Telecomm industry (pressurizes its underground cables to repel moisture and avoid shorts		:*Telecomm industry (pressurizes its underground cables to repel moisture and avoid shorts

Helal at 13:40, 29 July 2012

2012-07-29T13:40:18Z

← Older revision		Revision as of 07:40, 29 July 2012
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	* Please start editing this page after the /noinclude		* Please start editing this page after the /noinclude
	* -------------------------------------------------></noinclude>		* -------------------------------------------------></noinclude>
	[[File:~~Compressed-air-dryer-826445~~.jpg\|thumb\|right\|200Px\|Compressed Air ~~Dryer~~]]		[[File:Compressed_Air_Dryers.jpg\|thumb\|right\|200Px\|Compressed Air Dryers]]
	'''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from compressed air.		'''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from compressed air.
	The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.		The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.
	Excessive water in compressed air, in either the liquid or vapor phase, can cause a variety of operational problems for users of compressed air. These include freezing of outdoor air lines, corrosion in piping and equipment, malfunctioning of pneumatic process control instruments, fouling of processes and products, and more.		Excessive water in compressed air, in either the liquid or vapor phase, can cause a variety of operational problems for users of compressed air. These include freezing of outdoor air lines, corrosion in piping and equipment, malfunctioning of pneumatic process control instruments, fouling of processes and products, and more.
	There are various types of compressed air dryers. Their performance characteristics are typically defined by the dew point.		There are various types of compressed air dryers. Their performance characteristics are typically defined by the dew point.


	* [[Regenerative Desiccant Dryers]], often called [[Regens]] or [[Twin Tower Dryers]]		* [[Regenerative Desiccant Dryers]], often called [[Regens]] or [[Twin Tower Dryers]]
	* [[Refrigerated Dryers]]		* [[Refrigerated Dryers]]
	* [[Deliquescent Dryers]]		* [[Deliquescent Dryers]]
	* [[Membrane Dryers]]		* [[Membrane Dryers]]


	Water vapor is removed from compressed air to prevent condensation from occurring and to prevent moisture from interfering in sensitive industrial processes.		Water vapor is removed from compressed air to prevent condensation from occurring and to prevent moisture from interfering in sensitive industrial processes.

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	==Refrigerated dryer==		==Refrigerated dryer==
	Refrigeration dryers employ two heat exchangers, one for air-to-air and one for air-to-refrigeration. However, there is also a single TRISAB heat exchanger that combines both functions. The compressors used in this type of dryer are usually of the hermetic type and the most common gas used is R-134a. The goal of having two heat exchangers is that the cold outgoing air cools down the hot incoming air and reduces the size of compressor required. At the same time the increase in the temperature of outgoing air prevents re-condensation.		Refrigeration dryers employ two heat exchangers, one for air-to-air and one for air-to-refrigeration. The goal of having two heat exchangers is that the cold outgoing air cools down the hot incoming air and reduces the size of compressor required. At the same time the increase in the temperature of outgoing air prevents re-condensation.

	Most manufacturers produce "cycling dryers". These store a cold mass that cools the air when the compressor is OFF. When the refrigeration compressor runs, the large mass takes much longer to cool, so the compressor runs longer, and stays OFF longer. These units operate at lower dew points, typically in the 35–40 °F range. When selected with the optional "cold coalescing filter", these units can deliver compressed air with lower dew points.
	~~Some manufacturers are marketing compressors with built-in refrigeration dryers, but these have had a mixed acceptance in the market~~.		Most manufacturers produce "cycling dryers". These store a cold mass that cools the air when the compressor is OFF. When the refrigeration compressor runs, the large mass takes much longer to cool, so the compressor runs longer, and stays OFF longer. These units operate at lower dew points, typically in the 35–40 °F range. When selected with the optional "cold coalescing filter", these units can deliver compressed air with lower dew points.
	Commonly a coalesing prefilter is installed immediately upstream of a refrigerated dryer to remove lubricating oil and other contaminants that have the potential to foul the dryer's heat exchangers.		Commonly a coalesing prefilter is installed immediately upstream of a refrigerated dryer to remove lubricating oil and other contaminants that have the potential to foul the dryer's heat exchangers.

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	The compressed air is passed through a pressure vessel filled with an absorbent media such as activated alumina, silica gel, molecular sieve or other desiccant material. The desiccant can bring the dew point of the water vapor in the air down to −40 °C (−40 °F) or below. This means that the air will not condense (deposition) water until it is cooled to −40 °C (−40 °F). In practice, two cylinders with desiccant are used; one is drying the air, while the other vessel is being regenerated. The switching of the vessels and the regeneration sequence is typically done automatically via solenoid operated valves.		The compressed air is passed through a pressure vessel filled with an absorbent media such as activated alumina, silica gel, molecular sieve or other desiccant material. The desiccant can bring the dew point of the water vapor in the air down to −40 °C (−40 °F) or below. This means that the air will not condense (deposition) water until it is cooled to −40 °C (−40 °F). In practice, two cylinders with desiccant are used; one is drying the air, while the other vessel is being regenerated. The switching of the vessels and the regeneration sequence is typically done automatically via solenoid operated valves.
	The regeneration of the desiccant vessel can be during three different methods:		The regeneration of the desiccant vessel can be during three different methods:


	* Heatless "pressure-swing" drying, which uses part of the dry compressed air coming from the other vessel to dry the desiccant in the vessel being regenerated at lower pressure.		* Heatless "pressure-swing" drying, which uses part of the dry compressed air coming from the other vessel to dry the desiccant in the vessel being regenerated at lower pressure.
	* [[Heated Dryers\|Heated dryer]], which uses a hot air blower, so there is no loss of compressed air.		* [[Heated Dryers\|Heated dryer]], which uses a hot air blower, so there is no loss of compressed air.

Admin at 12:05, 22 July 2012

2012-07-22T12:05:32Z

← Older revision		Revision as of 06:05, 22 July 2012
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	* -------------------------------------------------></noinclude>		* -------------------------------------------------></noinclude>
	[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]		[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]
	~~The~~ '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from ~~'''Compressed Air Dryers'''~~.		'''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from compressed air.
	The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.		The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.
	Excessive water in compressed air, in either the liquid or vapor phase, can cause a variety of operational problems for users of compressed air. These include freezing of outdoor air lines, corrosion in piping and equipment, malfunctioning of pneumatic process control instruments, fouling of processes and products, and more.		Excessive water in compressed air, in either the liquid or vapor phase, can cause a variety of operational problems for users of compressed air. These include freezing of outdoor air lines, corrosion in piping and equipment, malfunctioning of pneumatic process control instruments, fouling of processes and products, and more.
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	:* Feed air for Zeolite type Oxygen and Nitrogen generators		:* Feed air for Zeolite type Oxygen and Nitrogen generators
	* Truck and Train Air brake systems.		* Truck and Train Air brake systems.


	==Video==		==Video==
	<youtube>OajNMRIv868</youtube>		<youtube>OajNMRIv868</youtube>

Admin at 12:03, 22 July 2012

2012-07-22T12:03:01Z

← Older revision		Revision as of 06:03, 22 July 2012
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	* -------------------------------------------------></noinclude>		* -------------------------------------------------></noinclude>
	[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]		[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]
	~~[[File:Polar_compressed_air_dryer-005.jpg\|thumb\|right\|200Px\|Polar Compressed Air Dryer]]~~
	The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.		The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.
	The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.		The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.
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	==Video==		==Video==
	~~<youtube>u68VI18Jso4</youtube>~~
	<youtube>OajNMRIv868</youtube>		<youtube>OajNMRIv868</youtube>

Helal: /* Video */

2012-07-22T07:51:59Z

Video

← Older revision		Revision as of 01:51, 22 July 2012
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	==Video==		==Video==
	[youtube]u68VI18Jso4[/youtube]		<youtube>u68VI18Jso4</youtube>
	[youtube]OajNMRIv868[/youtube]		<youtube>OajNMRIv868</youtube>

Helal at 07:50, 22 July 2012

2012-07-22T07:50:29Z

← Older revision		Revision as of 01:50, 22 July 2012
Line 68:		Line 68:
	:* Feed air for Zeolite type Oxygen and Nitrogen generators		:* Feed air for Zeolite type Oxygen and Nitrogen generators
	* Truck and Train Air brake systems.		* Truck and Train Air brake systems.

			==Video==
			[youtube]u68VI18Jso4[/youtube]
			[youtube]OajNMRIv868[/youtube]

Helal at 07:46, 22 July 2012

2012-07-22T07:46:53Z

← Older revision		Revision as of 01:46, 22 July 2012
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	* -------------------------------------------------></noinclude>		* -------------------------------------------------></noinclude>
	[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]		[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]
	[[~~Img~~:Polar_compressed_air_dryer-005.jpg\|thumb~~\|Middle~~\|right\|200Px\|Polar Compressed Air Dryer]]		[[File:Polar_compressed_air_dryer-005.jpg\|thumb\|right\|200Px\|Polar Compressed Air Dryer]]
	The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.		The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.
	The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.		The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.

Helal at 07:44, 22 July 2012

2012-07-22T07:44:18Z

← Older revision		Revision as of 01:44, 22 July 2012
Line 8:		Line 8:
	* -------------------------------------------------></noinclude>		* -------------------------------------------------></noinclude>
	[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]		[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]
			[[Img:Polar_compressed_air_dryer-005.jpg\|thumb\|Middle\|right\|200Px\|Polar Compressed Air Dryer]]
	The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.		The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.
	The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.		The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.

Helal at 07:40, 22 July 2012

2012-07-22T07:40:39Z

← Older revision		Revision as of 01:40, 22 July 2012
Line 7:		Line 7:
	* Please start editing this page after the /noinclude		* Please start editing this page after the /noinclude
	* -------------------------------------------------></noinclude>		* -------------------------------------------------></noinclude>
			[[File:Compressed-air-dryer-826445.jpg\|thumb\|right\|200Px\|Compressed Air Dryer]]

	The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.		The '''Compressed Air Dryers''' are commonly found in a wide range of industrial and commercial facilities. The [[Air Dryers]] are used to remove water vapor from '''Compressed Air Dryers'''.
	The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.		The process of air compression concentrates atmospheric contaminants, including water vapor. This raises the dew point of the compressed air relative to free atmospheric air and leads to condensation within pipes as the compressed air cools downstream of the compressor.