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Topic: Reciprocating compressor

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Centrifugal compressor

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Compressor

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Piston

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Isobaric process

	Gas compressor - Wikipedia, the free encyclopedia
		Compressors are closely related to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe.
		As gases are compressible, the compressor also reduces the volume of a gas, whereas the main result of a pump raising the pressure of a liquid is to allow the liquid to be transported elsewhere.
		Larger reciprocating compressors up to 1000 HP are still commonly found in large industrial applications, but their numbers are declining as they are replaced by less costly rotary screw compressors.
	en.wikipedia.org /wiki/Gas_compressor (1148 words)

	RECIPROCATING COMPRESSORS
		Our most popular reciprocating compressor model is the versatile 450XL® It's designed to use virtually any industrial refrigerant, operating at compression ratios of up to 8:1 with ammonia and up to 12:1 with some halocarbons.
		Other reciprocating compressor models include the popular 440, long recognized as the "workhorse of the industry;" and the 350ES, designed specifically for industrial and commercial halocarbon applications.
		Compressors are available in three (3) models having 4, 6, and 8 cylinders with a gross displacement of 134 to 268 CFM at 1200 rpm.
	www.index-west.com /in03003.htm (448 words)

	CONTROLS (Site not responding. Last check: 2007-11-04)
		The reciprocating compressor operates as the trim unit to handle the fluctuating air demands that are over the capacity of the rotary screw.
		At 105 psig, the reciprocating compressor is supposed to partially unload and the rotary screw is supposed to continue on as the base load unit.
		Direct connections to the discharge air line of a reciprocating compressor produces pulsations which may be harmful to the pressure gauges, check valves, controls and the air oil separator element in the rotary screw compressor.
	www.afe.org /members/journal/march-april2002/Wise.html (1285 words)

	Compressor Facility [Williams.com]
		The size and the number of compressors varies, based on the diameter of the pipe and the volume of gas to be moved.
		It should be noted that except for the small amount of debris and liquids captured to protect the compressors, and the natural gas needed to run the compressor station, all the natural gas that enters a compressor station leaves it again through the pipeline.
		Deciding between which type of compressor to use is based on the flowrate through the compressor as well as the amount of pressure that is needed.
	www.williams.com /northeastexpansion/compressor.asp (801 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		Generally, a reciprocating compressor is constructed such that a piston of the compressor is integrally combined with the armature (moving element) of a reciprocating electric motor, instead of using a crank shaft.
		However, in the conventional reciprocating compressor as described above, only the front end of the inner stator is supported by the frame, and the rear end of the inner stator is left free as it is, and therefore the inner stator can not be fixed strongly.
		The general operation of the reciprocating compressor having the stator supporting apparatus according to the present invention is similar to that of the conventional art.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/88373.011122&ELEMENT_SET=DECL (1383 words)

	Reciprocating Refrigeration Compressor Failure Diagnostics
		Compressor Oil Loss: Quantity of oil returning from the system is less than that leaving the compressor.
		Often a combination is applied where the compressor at the off-cycle will continue running until the crankcase pressure has dropped to a predetermined pressure, after which, the compressor is locked out only to recycle on load demand while then a crankcase heater acts to keep refrigerant from settling in the oil.
		Unless the compressor is much unloaded, the loss of power to one half of the total winding or one of the tandem windings will result in over working and thus overheating of the remaining half winding.
	fridgetech.com /articles/recipfailmodes (1866 words)

	How To Diagnose Air Conditioning Compressors
		The compressors on a residential heat pump or air conditioner is usually hermetic that means the motor and the part that pumps is built into one box also called a can.
		Compressor trips breaker or blows fuses as soon as contactor is pulled in (two pole contactor) same as above...
		Compressor (reciprocating) is going off on internal relief: (It will Scream/hiss like a "Banshee in a bear trap" You will hear it over 1/4 of a mile away.
	toad.net /~jsmeenen/compressor.html (1226 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		Background of the Invention In the reciprocating compressors with a linear motor, the reciprocating movement of a piston inside a cylinder is effected by means of an actuator, which supports a magnetic component activated by the linear motor.
		The aim of connecting the piston to the resonant spring by means of a flexible connecting rod is to minimize the transmission of moments of the piston resulting from alignment errors between the center of the resonant spring and the center of the cylinder.
		In the illustrated prior art construction, the compressor has a non-resonant structure 1, including a cylinder la, inside which is provided a piston 2 coupled to an actuator 3, usually tubular and external to the cylinder la and provided with a magnet 4, which is axially impelled by energization of the electric motor (figure 1).
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/18393.010315&ELEMENT_SET=DECL (810 words)

	Air Compressor Selection
		Reciprocating air compressors are available either as air-cooled or water-cooled in lubricated and non-lubricated configurations, may be packaged, and provide a wide range of pressure and capacity selections.
		Oil less compressors are designed with a low-friction coating on their moving parts to eliminate the need for oil, are generally less expensive than their oil-lubricated counterparts and don't require you to change the oil on a regular basis.
		The "cut-in" pressure (the pressure level that kicks on the compressor), in compressors currently on the market, is about 95 psi, while the new 2-stage compressors have a cut-in pressure of about 145 psi, so the compressor keeps a significant reserve for long blasting jobs.
	www.sandcarver.org /air_compressor_selection.htm (3064 words)

	Improving Reciprocating Compressor Valve Life
		The purpose of the valves in a reciprocating compressor is to let air in and out of the cylinder during the compression process.
		Compressor valves serves as check valves for the inlet and discharge passages of the cylinder and will open and close once for every revolution of the crankshaft.
		It is possible to run reciprocating compressors with valves out of tolerance and it happens more than you think.
	www.plant-maintenance.com /articles/valve_life.shtml (1587 words)

	Reciprocating Compressor
		The suction pressure of the first stage of the reciprocating compressor is maintained at 62.5 PSIG and the discharge pressure of the second stage is maintained at 1000 PSIG.
		Since reciprocating compressors displace a constant volume of gas regardless of operating conditions, the compressor must be configured to displace slightly more gas than is required.
		Alternatively, the speed of the compressor may be adjusted to trim the amount of gas displaced, however, this is not a typical arrangement since most reciprocating compressors are designed to run at a constant speed.
	simtronics.com /catalog/spm/spm1300.htm (1008 words)

	Reciprocating Compressor (Site not responding. Last check: 2007-11-04)
		The compressor capacity is fixed due to speed and it's recip characteristics, so the volumetric capacity is larger than required at times.
		Because of the feed gas is hydrocarbons, the hazard of sucking a partial vacuum with the reciprocating compressor is always present.
		This is an oversight in the compressor design that you must correct or otherwise you run the risk of sucking in air and forming a combustible mixture in the hydrocarbon feed gas.
	www.cheresources.com Forums - !http: //www.cheresources.com/forums/forum1/messages/10535.shtml (1848 words)

	Reciprocating Compressor (Site not responding. Last check: 2007-11-04)
		As crankshaft speed is one of the important operating parameters of reciprocating compressor, the information obtained from the speed signature--IAS contain the status of the whole compressor system including not only the compressor but also transmission system and the driving motor.
		This case study investigates the IAS characteristics of a reciprocating compressor for condition monitoring.
		It addresses issures including the dynamics of reciprocating compressor, the measurement of IAS, signature extraction of IAS, the IAS characteristics of reciprocating compressor and the capability of fault detection.
	www.eng.man.ac.uk /mech/merg/ias/Case_studies_RC.htm (245 words)

	Reciprocating Compressor Sizing (Site not responding. Last check: 2007-11-04)
		For multi-stage compressors, iterstage cooling is applied with the assumption that the compressed gas or vapor is non-condensible.
		A Process Associates proprietary correlation reflecting typical reciprocating compressor efficiencies is used.
		The correlation is derived from all the major compressor manufacturers data.
	www.processassociates.com /process/rotating/recip_s.htm (217 words)

	Compressor Products (Site not responding. Last check: 2007-11-04)
		Air Compressor Repair: Reciprocating Compressors - Principles and Troubleshooting - This lesson explains the normal operating conditions for a reciprocating air compressor.
		Air Compressors and Blowers, Part 3 - Third in series covers rotary blower disassembly; removing the timing gears; removing head plate and shafts; removing the bearings; installing the bearings and the seal; installing the timing gears; and adjusting the timing and reassembly.
		Compressor Performance - This book will be appreciated as a handy reference book by compressor design engineers and compressor maintenance engineers as well as engineering students.
	www.maintenanceresources.com /productsshowcase/productlisting/compressorpage.htm (652 words)

	Hasegawa VK/VKL Reciprocating Compressor Series (Site not responding. Last check: 2007-11-04)
		With its state-of-the-art design, compactness and efficiency, the VKS, VK and VKL compressor series are proof of Hasegawa's continued commitment to the advancement of the refrigeration industry.
		The VK compressors have a 2 3/4" stroke whereas the VKL compressors have a 3 11/32" stroke.
		Both the VK and VKL compressors can operate at speeds as high as 1800 RPM and are available for R-717, R-22, R-404a, as well as other refrigerants.
	www.hasegawa-usa.com /vk2.htm (193 words)

	Ship Technology - Burckhardt Compression - Reciprocating Compressor Design, Manufacture, Maintenance and Repair
		These industries use compressors to raise the pressure, to reduce the volume and to cool or liquefy gases such as hydrocarbon gases, industrial gases and boil-off gases.
		Reciprocating compressor field service comprises: compressor installation and commissioning; scheduled maintenance; major and minor overhauls and retrofits; analyses of operation and maintenance data; and troubleshooting.
		Burckhardt Compression's reciprocating compressors are used to raise the pressure, to reduce the volume and to cool or liquefy gases such as hydrocarbon gases, industrial gases and boil-off gases.
	www.ship-technology.com /contractors/pumps/burckhardt (629 words)

	[No title]
		Reciprocating compressors are used in small and medium-sized refrigeration systems, and like gasoline engines they employ cylinders, pistons, connecting rods, crankshafts and valves.
		These compressors utilize two meshing helical rotors (a male one with lobes, and a female one with gullies) in a close-fitting housing.
		Most compressor manufacturers recommend that this ratio not be allowed to exceed 12.
	www.cop.com /SEUhtmDOCS/3SE6.htm (918 words)

	Gardner Denver - Reciprocating Air Compressors (Site not responding. Last check: 2007-11-04)
		Lubricated 1/2 to 30 HP Reciprocating Air Compressor - A wide variety of splash and pressure lubricated reciprocating compressors.
		These compressors are available in 50 or 60 HZ and gas and diesel driven.
		Gardner Denver’s Belliss & Morcom reciprocating air compressors are available for PET bottle-blowing, breathing air, process gas, industrial gas, power generation and CNG natural gas compressor service.
	www.gardnerdenver.com /GDCorpPortal/RouteRequest?route=to&id=1129 (273 words)

	Reciprocating gas compressor bound for Spain: News from Peter Brotherhood
		The block mounted compressor is based around what appears to be a typical four-cylinder reciprocating gas compressor - but two cylinders of the machine will handle hydrogen make-up gas whilst the other two simultaneously handle hydrogen recycle gas for diesel fuel hydrofining.
		This compressor configuration is known as a "combination compressor".
		Peter Brotherhood has supplied a number of combination compressors to refineries in China which have proved highly successful in operation.
	www.engineeringtalk.com /news/pth/pth111.html (387 words)

	Vilter Products
		The Vilter Single Screw Compressor is the newest concept in screw compressor technology, and it’s Vilter’s latest release in a long, respected line of compressors used for industrial cooling applications.
		Vilter’s Single Screw Compressor is a rotary, oil injected, positive displacement machine that can operate with any of the commonly used industrial refrigerants.
		Other reciprocating compressor models include the popular 440, long recognized as the "workhorse of the industry;" the 350ES, designed specifically for industrial and commercial halocarbon applications; and the 32O, our compact open-type air conditioning compressor.
	www.wbservice.com /vilter.htm (501 words)

	Automation, analyzers, controls and instruments for reciprocating engines and compressors (Site not responding. Last check: 2007-11-04)
		Reciprocating compressors and engines have many predictable failure modes that can be detected and corrected before they significantly affect the machine's performance or availability.
		Our approach was to develop a list of typical engine and compressor faults and then use these analysis tools to illustrate each of them.
		This graphic indicates where to collect data on a reciprocating compressor.
	www.dynalco.com /article.cfm?hid=27 (308 words)

	The Kilgore Reciprocating Compressor Program (Site not responding. Last check: 2007-11-04)
		Data files for Ariel and Gemini compressors may be obtained from their respective manufacturer.
		If compressor data files are not available, the required data may be by keyboard entry from manufacturer and/or vendor data.
		Compressor performance may be calculated for single-acting double action cylinders (either lifting or removing cylinder suction valves) and/or disabling a stage.
	www.engineerswebsite.com /kilgore/Reciprocating.htm (570 words)

	Reciprocating Compressor
		compressors used by the NCF are almost identical to
		the compressor, but in the trailer that carries the unit.
		compressor in the NCF is the oil-injected rotary vane
	www.tpub.com /content/construction/14050/css/14050_197.htm (327 words)

	[No title]
		Figure 1, Compressor cylinder time waveform with insignificant impact There is no correlation to compressor piston position for these captured signals although looseness is more likely at points of rod reversal.
		An example, for a smooth running compressor, would be to set the alarm for 3 or 4 counts and the shut down for 7 or 8 counts.
		The focus of this writing is on measuring impact in the compressor cylinder area on a reciprocating compressor.
	www.homestead.com /nfvibinst/files/Vib_Inst_Impact_Paper_11_21_02_New_York.doc (3480 words)

	Reciprocating Compressor (Site not responding. Last check: 2007-11-04)
		Over the years, millions of Ingersoll-Rand small reciprocating compressors have been sold to auto and truck repair shops, body shops, service businesses and industrial plants.
		Today, our reciprocating Type-30 is the number one air compressor in the 2.0 to 30 hp range.
		For air compressors in the 30-hp-and-under class, our field tests prove that the Type-30 two stage reciprocating compressor has the most efficient design and offers the greatest value.
	www.kgpowersystems.com /products/air_compressors/reciprocating.html (143 words)

	Tyler Scroll Compressor Systems
		Available in low and medium temperatures, scroll compressor systems require a fraction of the space as compared with reciprocating compressor systems.
		Scroll compressors are more tolerant to liquid refrigerant than reciprocating compressors, thereby improving compressor reliability.
		Scroll compressors are smaller and weigh less than reciprocating compressors.
	www.tylerrefrigeration.com /mechanical/scroll.htm (133 words)

	Anderol: Royco 800® Series Optimizes Reciprocating Compressor Performance in Gas Gathering Operations
		By switching to Royco® 889, a reciprocating compressor lubricant supplied by ANDEROL Inc., Thunder Energy was able to minimize crankcase rust, double operating intervals between compressor overhauls, increase production by $18,000 a month, reduce energy consumption, and improve the quality of its natural gas.
		Traditionally, mineral oil and synthetic-based compressor lubricants are soluble in gas, and gas is soluble in the lubricant.
		With reciprocating compressors using the gas it extracts as a power source, contaminants in the gas often cause deposits on the exhaust valves of the equipment.
	www.imakenews.com /anderol/e_article000382649.cfm?x=b11,0,w (953 words)

	Reciprocating Compressor Repair, Reciprocating Compressors, Reciprocating Compressor Parts
		We have refurbished and serviced in excess of 12,000 reciprocating compressors for large industrial facilities.
		Under our maintenance program it is not uncommon to reduce OandM cost by half, double valve life and reduce cost of parts by 30% over OEM levels.
		If required we can design or remanufacture steam recompression systems, steam driven compressors, high pressure soot blowing compressors, booster compressors, landfill gas compressors, special ammonia, hydrogen freon, methane coke gas compressors.
	www.precisioncompressorparts.com /reci.htm (538 words)

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