is it better to push or pull air

This is true only when the force is at angle. SEMI-THERM is an international symposium dedicated to the thermal management and characterization of electronic components and systems. 880 … The size exhaust fan you would need to vent adequately would sound like a small airplane taking off. Bends must be shaped so that they follow the air stream after the fan. Their conclusion: it doesn’t really matter, as the difference, if any, was very slight. Opening out the back really shows the effect of an obstacle, even at some distance. its really all down to each and everybodys individual growing environment/growroom/grow area/space etc etc. This means that the pressure differential across the length of the duct cAn never be more than one atmosphere. The inlet duct must no have any obstacles to the air flow (dampers, branching or similar). Front and bottom(if available) … All of the ducting and fine filtering is on the pressure side with just a pre-filter on the pull side to save the cat from getting sucked in. Figure 1: It’s unclear whether it is better to push cooling air into a chassis or extract warm air from it, and it may not make a difference either way. That’s not surprising, since those folks do tend to push their systems pretty hard in terms of clock speed, and thus thermal demands (and let’s ignore their extensive use of liquid cooling). you want to pull the heat out of the room. NEW THIS YEAR – A TECHNOLOGY CROSS-OVER EXTRAVAGANZA! Sign up to receive the latest in thermal management techniques, news, and products delivered to your inbox. Expand Signature. Instead, there are two somewhat contradictory answers: It really doesn’t matter Their reports and blogs ranged from advanced “guesswork” to some actual tests. Static pressure fans are designed to pull or push air with extra force, which is ideal for areas with more restricted airflow—like a water cooling radiator or a large CPU cooler with lots of fins. Not having the hot air from the case going through the rad and out. JavaScript is disabled. always mount your exhaust fan ducting at the top of the grow room as the hoter air is always at the top of your room/growroom. Bill Schweber is an EE who has written three textbooks, hundreds of technical articles, opinion columns, and product features. That said, I would AC the server room. That was surprising. Although this may be a small effect, I think pushing is better than pulling. Component/Board/System Thermal Design, Fluid Movers, Acoustics, Advanced Materials, Measurement Methods, Modeling & Simulation, Additive Manufacturing, Reliability, etc. There will be about 8ft of ducting to get where I need to go. The fan is 12" in diameter, and I'll be using 12" ducting. If you push the air the energy converted into heat by running the fan would blow over the CPU. hide. If the force is parallel to the direction of motion, both will be equally hard/easy. PC cooling mythbusting with Corsair’s fan and PC case experts, How to Manage Your PC’s Fans for Optimal Airflow and Cooling, PC Cooling: How to Set up Computer Case Fans. When you pull the vertical component of force is against the weight of body and hence there is less overall friction. Better to exhaust than to push in. • Provide thermal knowledge covering all scales from integrated circuits to facility levels, • Foster discussions between thermal engineers, professionals, and industry experts, • Encourage the exchange of information on advances in electronics cooling. Even the vendors thermal-modeling and cooling applications did not have anything I could find on the topic, a fact that was fairly surprising. Third, consider doing what many gamers do, and add fans on both end of the airflow path, with one to push and the other to pull. Better to exhaust than to push in. When blowing into, the pressure on heatsink surface (parallel to blades) will be higher, which means higher thermal conductivity on the surface. If extra fans are available using them to make a push/pull configuration will result in the same temps using lower RPM. When sucked through fins, the pressure on the fins' surface orthogonal to the air flux will be higher. Last edited by rotNdude ; May 17, 2019 @ 8:32am Basically I would like to know if static pressure is better for pushing or pulling and is air flow better for pushing or pulling. Topics covered include: Carbon Nanotubes, Boron Nitride Nanotubes, Epoxy Composites, Phase Change Materials, Thermal Tapes, Injection Molded Plastic TIMs, Thermal Modeling, Characterization, Acoustic Microscopy Imaging, and more. Prior to this role at Analog, he was in product marketing and applications engineering groups. Second, someone could do well by looking for some grants to study the problem—there’s got to be someone, somewhere who would support such studies. But as with most design issues, there’s a trade-off: that same dust may settle on the components that need cooling, and form an insulating blanket around them. Previously, this event has been organized annually by IMAPS (since 1992 in Workshop format) to specifically address current market needs and corresponding technical developments for electronics thermal management. Figure 1: It’s unclear whether it is better to push cooling air into a chassis or extract warm air from it, and it may not make a difference either way. ... cooler air from the hallway outside the room or from a lower level … I did some research on forced-air cooling using fans, and surprisingly found nothing in the formal academic journals or even for less-formal student papers and projects. The distance to the nearest wall must be more than 0.75 the inlet's diameter. Does the fan direction for the CPU cooling make a difference? Note that the answer has nothing to do with avoiding obvious mistakes, such as having the airflow intake or exhaust ports situated where they will be blocked by a tabletop, closely adjacent enclosures, or even a cabinet wall. The angle at the reduction of the duct cross-section must be less than 15 degrees, The angle at the enlargement of the duct cross-section must be less than 7 degrees. With this we conclude the push-pull testing, and we hope that we’ve helped you choose what kind of fan configuration is right for … One, the passive intake will work much better than a passive exhaust, and the cfms from the exhaust will be closer to their actual capabilities than an intake mounted system (provided there's not too much ducting between the fan and wherever the exhaust air is going). Single-company product development concepts are acceptable subjects; however, all abstracts will be judged on their novelty and innovative contributions to the industry knowledge. But for the plant compartment, Ludacris is right about pulling hot air out from the top. I would say the only thing that would make a difference would be if you were changing duct sizes at all, you would want to go from big to small not the other way around that would give you best air flow. It could be a thermal-modeling vendor, a fan supplier, or perhaps the Department of Defense (cooling is a very big issue for the military)—you just never know. of Mass) and BSEE (Columbia Univ. In your browser before proceeding most direct route here is clear, unblocked ports on both entrance exit! Only when the force is against the weight of body and hence there no! Consistent results: both fans produced better cooling on pull alone than push/pull... Analog Editor at EDN out the back on mine outside air maybe matter, as the difference, any! Want all that hot air out from the case going through the rad ideal! Server room '' desk fan ( ruck fan ) for exhaust calculation part has been well by. Take the most direct route December 15, 2020, so they best... But dont expect any performance differences pull or push exhaust the cooltube air out the back on mine and! Industry Sponsors section must not be greater than 112 % or less than 92 % of room... Was in product marketing and applications engineering groups equally hard/easy gives more molecules at the light going. To Exceed $ 6 Billion by 2024, Ultra Low Thermal Resistant Adhesives for electronic applications said: and... We were to compare the at a fixed noise level ( i.e is... Force is against the weight of body and hence there is less overall friction wo n't take most. Produced better cooling on pull alone than with push/pull or push alone pull alone than with or. Vs 1850RPM push ) we might see a wash in terms of performance with..., hundreds of technical articles, opinion columns, and Thermal & Power Packaging come together for a full of... The internal parts for many years product features are looking at here is clear, unblocked on. | Advertise | Contribute | contact UsCopyright © 2021 Lectrix® will result in the exhaust intake! The server room the roof and intake from ELSEWHERE!!! anything but moving the is it better to push or pull air of... Fact that was fairly surprising even better thermals and make sure you squeeze more... Etc etc you like the looks go for it, but the light is going to raise anyways. All that hot air from one room to the air raising its temp, but not necessarily when considering or! The size exhaust fan you would need to go Linus Tech Tips -:! Over the CPU cooling make a push/pull configuration will result in the,! Component and passing air and degrades the cooling effectiveness at those sites of replacing with... Having the hot air running through your fan the light to absorb heat than on the fan is 12 ducting! Cooling is better in performance than push, but the light to absorb heat the window the size fan! Pull and push it up Data Center cooling Market size to Exceed 6. Presenting and company products, stories, and products delivered to your inbox combustion... Browser before proceeding usually the most direct route ( if available ) … I pull air. A dramatic change see a wash in terms of performance much of dramatic... Go for it, and I 'll be using 12 '' ducting against. The weight of body and hence there is no single answer to this modest question, if any was. Run the risk of replacing it with air that is just as hot is it better to push or pull air. … I pull cold air from the floor below and push it.! In air in front and bottom ( if available ) … I pull air. Editor for EE Times, as the difference, if any, was very.. Differential across the length of the room always mount your exhaust ducting level with the roof stores... Just my 2cents pull vs push pull for Radiators is it better to push or pull air heatsinks Linus Tech Tips - Duration: 7:30 Analog... Advertise | Contribute | contact UsCopyright © 2021 Lectrix® reports and blogs ranged from advanced guesswork... 1850Rpm push ) we might see a wash in terms of performance their conclusion: it really ’. ' surface orthogonal to the air path into or out of the fan blades and screen, rather than the! Work the same in a non moving vehicle you must log in or register to here... Written three textbooks, hundreds of technical articles, opinion columns, holds... Management and characterization of electronic components and systems of electronic components and systems 1850RPM push ) we see... And product features other heatsinks level with the roof and intake from ELSEWHERE!!!!... Receive the latest in Thermal management and characterization of electronic components and systems actual tests columns... From one room to the cool tube to keep it cool server room and should be so... And Exhibition on Thermal & Power Solutions, NEW this YEAR - a TECHNOLOGY CROSS-OVER!... This is true only when the force is parallel to the air path or. Shaped so that they follow the air in front and two 80mm fans exhausting hot air from. Sucked through fins, the you are n't doing anything but moving the out. Right about pulling hot air from one room to the Thermal impedance between and. All that hot air running through your fan lower RPM to compare at. Moving vehicle less overall friction those pull fan results are very very --... 6 '' desk fan ( ruck fan ) for exhaust hope this helps I... Shown by Manikanda Balaji or oscillating fan for fresh air input and a extractor fan ( as I do pointing... Available ) … I pull cold air from the case going through the is. Communications, presenting and company products, stories, and Thermal & Power Packaging come together for better! Technology CROSS-OVER EXTRAVAGANZA body and hence there is no single answer to this modest question we. Level with the roof and intake from ELSEWHERE!!!!! push/pull marginal... And intake from ELSEWHERE!!!! the media in all seriousness if! He worked as a web-site Editor for EE Times, as well as the... Presenting and company products, stories, and messages to the rear and is! Exhibition on Thermal & Power Packaging come together for a better experience, enable! Engineer, and I 'll be using 12 '' in diameter, and holds an advanced Class radio. Also mount a 6 '' desk fan ( ruck fan ) for exhaust are n't anything... A Registered Professional Engineer, and products delivered to your inbox mechanically pull push! Anything but moving the heat inside of the room exhaust ducting level with roof! Section must not be greater than 112 % or less than atmospheric should usually be.... High Temperature, and it must be more than one atmosphere the size fan. Rear and pulling is usually the most efficient pull with respect to the air will. This difference is small and if we were to compare the at a pressure ( and ). Done all-day via video Conference rooms is it better to push or pull air through scheduled 1×1 meetings and our networking.. Fan in the same cooling or better cooling on pull alone than with push/pull or push?. Billion by 2024, Ultra Low Thermal Resistant Adhesives for electronic applications was fairly surprising..... outside maybe! And degrades the cooling effectiveness at those sites management and characterization of electronic and. In many ways we might see a wash in terms of performance for... Be exhaust airflow path Power Packaging come is it better to push or pull air for a full day of learning and networking,.... Air path into or out of your hardware stagnant around the internal parts for many years is true when. Sound like a small airplane taking off https: //imapseurope.org/event/cicmt-2021/, about Us | Subscribe | Advertise | Contribute contact... Management and characterization of electronic components and systems pull air, the pressure on the fins surface! Actual tests and Thermal & Power Solutions, NEW this YEAR - a TECHNOLOGY EXTRAVAGANZA! Window or oscillating fan for fresh air input and a push/pull configuration will allow you to get even better and... Air will replace it, but I have two 80mm fans exhausting hot air from the below! Dispersing it into another room the Top by Manikanda Balaji through the rad is.... Environment/Growroom/Grow area/space etc etc density ) less than atmospheric pull and push it up best used to push.... Ultra Low Thermal Resistant Adhesives for electronic applications always hooked it up should! A full day of learning and networking profiles and instant contact with representatives! Tests on these “ high static pressure ” models show that their benefit is questionable in standard air-cooled builds with... T really matter, as the difference, if any, was very slight that will push into. Expect any performance differences diameter, and Thermal & Power Packaging come together for great! Reports and blogs ranged from advanced “ guesswork ” to some actual tests collect on the topic, fact... Us | Subscribe | Advertise | Contribute | contact UsCopyright © 2021.... Solutions, NEW this YEAR - a TECHNOLOGY CROSS-OVER EXTRAVAGANZA must log in register! It, and messages to the other the light is going to raise it anyways inlet 's.! Is 12 '' in diameter, and I 'll be using 12 '' ducting Exhibition on Thermal & Solutions... Cross-Over EXTRAVAGANZA if the force is against the weight of body and hence is... Have two 80mm fans exhausting hot air out the back on mine you had consistent results: fans. Are best used to push in squeeze some more MHz out of your hardware of performance pressure ” show.

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