I believe the gains in the 38mm showing more benefit in push is due to pressure and turbulence. A pull set-up is Infact the most effective. Push, pull or push/pull after all? Optimally you would want to do the same with a AIO cooler, just for better cooling performance. If, however, the fans are behind the radiator and they pull the air through them, that’s called «pull». - Duration: 7:58. In case you were still wondering about placement... Great video I watched a few months back! Is this difference in speed okay or should I match the top and bottom with the same fan speed? Large (read fat or thick) radiators can perform much better if you're using low RPM fans with a deadzone in pull configuration, this also gives you a fair amount of silence. I have a 97 dodge neon and I'm curious if the fans are moving the wrong way. The key is to find the correct ratio between the 'push' and 'pull' fans. In my experience, push produces (marginally) better results than pull because all the air and pressure a fan produces i all used to cool radiator/cooler body. The simplest mechanical radiator fans are “always on,” in that they spin and either push or pull air whenever the engine is running. It does not push. Remember, shrouds cannot be used on pushers. That's a whole lot of the radiator (or heatsink for air cooling) that's not getting any air over it. Mechanically pull and push will work the same in a non moving vehicle. Currently, the fans pull air from the case through the rad, and into the environment. An electric fan is very useful for vehicles that will be idling as it assists with bringing the fresh air into the engine Push or (Pusher) Fans mount on the front or (grill) side of the radiator. Radiator thickness and number of fins per inch (FPI) increase heat dissipation surface, but also make it harder for the fan to blow air through it. Well, since either option should pretty much do a decent job, then I'll just stick to my current configuration. That's the direction the air is traveling through the engine bay when you drive. That is because a pusher fan actually limits some of the air passing over the radiator when cruising at higher speeds. If your fan dies in a pusher it will overheat (at … As a general rule, you want to draw air in from the front of the case, and push it out the back, or top, of the case. Use pushpull (fans on both sides) on the Rad if you want it to intake lots of air. Using the same fans in both push and pull would cause the pull fan to out perform the push fan no matter what fans you use because there is nothing blocking the airflow of the pull fan, it will obviously blow a higher cfm.. on a car, the fan on the rad pushes air through, should it be the same for an AIO in a pc? Pull or (Puller) Fans mount on the back (engine) side of the radiator. This is assuming the fan being used is a static pressure fan, since those are supposed to have a more focused flow for restricted air flow situations, like a radiator. So, an obvious question arises: is it better to use the fan to push fresh air into the unit to be cooled—positive pressure—or to put the fan on the exhaust side and pull heated air through and out of it—negative pressure. Using the same fans in both push and pull would cause the pull fan to out perform the push fan no matter what fans you use because there is nothing blocking the airflow of the pull fan, it will obviously blow a higher cfm.. Pushing or pulling shouldn't matter, as long as it follows the flow, but I think the majority that I see push air through the cooler. the fan should pull air through the radiator, and push the air at the motor. If your fan dies in a pusher it will overheat (at … I want to make the push fans at 1800 rpm and the pull fans 3000 rpm. Fans move air through the radiator assisting in cooling the engine. Pull fans: these fans pull air through the radiator and are located on the engine side of the radiator. level 1 Bitwit 269,126 views. It seems to me it should be pulling air through the radiator. If you suck air away from the CPU you lowering the density of the air making less atoms available to pick up the heat in every given moment. All rights reserved. Pull in push - pull config produces marginally (but some times important) help to push fans to do do their job. If the fan is not OEM, the air volume may be off and the electrical characteristics could be different. However, there are a couple different types of fan clutches that can allow a mechanical cooling fan to “switch” off and on according to the temperature of the engine. - Duration: 7:58. Before the advent of electrical fans for cooling radiators, the mechanical fan was exclusively driven by a fan belt attached to the front of the engine. These are usually the factory location for electric fans. Exhausting air form inside the case through a radiator may give you a few degrees higher CPU temp in games because GPU makes a lot of hot air. This 4-5mm difference can mean fan will be much noisier and sometimes does is not able to pull air into itself as well and it can push it out. Alienware m17 R3, can the I7 10750H be delidded and have Thermal Grizzly Liquid Metal applied? The overall configuration will either be for intake (air from the outside) or exhaust (air from the case). A pusher fan sits in front of the radiator. The wisest course is to remove the fan and install a GM supplied part. Stand alone, off of the car, the fans push and pull the same cfm, mounted to the car they will have the exact same surface exposure to the radiator face of the radiator, the area of blockage face and back of the radiator is the same as caused by the fan body. Español - Latinoamérica (Spanish - Latin America). Push vs Pull. Does the Radiator Cooling fans pull or push air or can it do both on a 93 Chevy Lumina 3.1 L. Cheers. Static Pressure vs Air Flow Fans - How to choose the right fan! I have a 97 dodge neon and I'm curious if the fans are moving the wrong way. Kitguru, “Fan config: Does it matter? When a vehicle is moving, a pusher fan can obstruct airflow due to its positioning in front of the radiator. When the fans are placed in front of the radiator and air pushes through them it’s called «push». ... Is it better to have a THICKER radiator or PUSH/PULL?? If it was efficient the car companies would have put it in place. If you do internal installation then you want to push the hot air out of the case, you don't want to pull the cold air to cool the rad and cause your case overheated. This way we can assess whether fan configuration makes much difference whether you are using a radiator or a more typical heatsink tower. The fan should pull air from outside the car through the radiator into the engince compartment. 2 fans Push/Pull vs others - It was very clear that when using two fans per radiator section, that the radiator intself acts as a flow spreader and provided great benefit to straightening out the air for the second fan in a push/pull configuration. This isn't the classic push vs. pull question, because my question is not about positioning of the fans relative to the radiator, but rather, about air direction. When you pull air there is no added heat from the fan motor. It makes no difference to the airflow. When you pull air there is no added heat from the fan motor. Yes, on a pull/push setup. You don't want your fan to fight against wind. When a vehicle is moving, a pusher fan can obstruct airflow due to its positioning in front of the radiator. If you do internal installation then you want to push the hot air out of the case, you don't want to pull the cold air to cool the rad and cause your case overheated. I have a 280 cooler master liquid cooling closed loop which I mounted to the top of my case. Should a radiator fan pull air through the radiator or push air out? ... Is it better to have a THICKER radiator or PUSH/PULL?? For a better experience, please enable JavaScript in your browser before proceeding. A puller fan on the other hand sits right behind the radiator. It all depends on your setup. All shrouded fans should be on the engine side of the radiator. Depends on how it's mounted. - Duration: 7:19. The important is to draw a fresh cool air to cool the rad and you want to exhaust the hot air away from the case. You don't want your fan to fight against wind. In most cases it will make little difference where you mount it. Pull trim: the fan (s) suck in the air as if/they were installed below the radiator and "pull" the air across the radiator fins. This works whether the fan is a pusher or puller. 3. well it all depends how you installed your rad, internal or external. This time 1300RPM Push/Pull vs 1400RPM Push: I would run it as exhaust (air out) simply because it would heat up the rest of the case otherwise (such as the GPU and the VRM which has little cool airflow to begin with). Using radiator as intake on the other hand hardly effects GPU temps in game. It seems to me it should be pulling air through the radiator. I have a 280 cooler master liquid cooling closed loop which I mounted to the top of my case. Both sets of fans should be blowing air in the same direction. 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). The push vs. pull question appears to really depend on the fan power. © Valve Corporation. instead of trying to push air through the radiator which I imagine would be pretty hard at 65mph. Sep 7, 2004. At speed, that flow is enhanced by the natural flow through the radiator (front to back), the fan clutch cooks, and hence allows the fan to freewheel. Exhausting air form inside the case through a radiator may give you a few degrees higher CPU temp in games because GPU makes a lot of hot air. Always use the right shroud with your fan. 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. Static Pressure vs Air Flow Fans - How to choose the right fan! Look at like this....a car radiator takes in clean air across it and the fan pushes that recycled hot air and throws it across the engine. Additionally, pushing the air will cause the fan to be in front of the radiator, blocking some of the air from actually getting to the radiator through normal air flow. Better to exhaust than to push in. More important than push/pull is proper shrouding and giving the air a place to go after traveling through the radiator. You can attach fans to both sides of the radiators. The Mustang's stock fan indeed PULLS air through the radiator. Push + pull should increase airflow, but keep dead zones in mind. In other words ANY radiator with push/pull fans is significantly better than ANY radiator with push only fans at similar RPM. The fluid won’t be cooled much more with it. Without flapper valves, too much air enters into the shroud causing the air to go around the radiator instead of through it, resulting in the car overheating. In many applications, the radiator fan will actually be bolted up to the water pump pulley. The AF fan would be better at pulling. This isn't the classic push vs. pull question, because my question is not about positioning of the fans relative to the radiator, but rather, about air direction. The reason being is if I have the fan on the outside and have it push the air I'll end up with a large amount of grass clippings caught between the fan and the radiator. The fluid won’t be cooled much more with it. Obviously, if the fan is mounted between the motor and the radiator, it would have to pull air. If you put your fan after your intake but before your long ducting both your intake and exhaust are not compromised and will be able to operate at its highest CFM. The manufacturer recommends that the fans on the radiator pull air in. I know the issue has been resolved, but thought this may help... Vibrating/ Crackling/Clicking sound like a sound a HDD would make is coming from where my liquid cooler is mounted over the CPU and the back also. This is because exhaust side of fan has the framework from surrounding housing to center where motor is. A pusher fan sits in front of the radiator. They sell the cooler pre-installed with both fans for an extra $20 or so. This time 1300RPM Push/Pull vs 1400RPM Push: Should a radiator fan pull air through the radiator or push air out? Yes, on a pull/push setup. That's a whole lot of the radiator (or heatsink for air cooling) that's not getting any air over it. where dissipates and exists out the bottom of the engine bay. For the Hyper 212 LED, I used CoolerMaster’s Air … Testing push vs pull vs push/pull” net, “Push or pull air across radiator fins?” Tom’s Hardware, “Liquid cooling – should it pull the air INTO the case or push out?” Tech Radar, “PC cooling mythbusting with Corsair’s fan and PC case experts” Ars Technica, “Push vs pull … Electrical fans can either push air through the radiator or pull air through it. Fan shrouds need a way to mount to the radiator. Notice that the fan is located on the radiator hose side of the radiator. Push + pull should increase airflow, but keep dead zones in mind. Preference should be given to a "pull" vs. a "push" fan. Large (read fat or thick) radiators can perform much better if you're using low RPM fans with a deadzone in pull configuration, this also gives you a fair amount of silence. JavaScript is disabled. Posted by hhechmi on Apr 14, 2009 Push trim: The fan (s) suck in the air as if it/they were installed on top the radiator and "push" the air across the radiator fins. Just interpolating from that, and the fact that most manufacturers market their coolers with the fans oriented as push, I'd probably believe that push is better for an air cooler too. On the 780, you should be able to supplement your air intake with a bottom fan. So, if you want optimal overall temps, you should give your radiator fresh air. A puller fan on the other hand sits right behind the radiator. At these stronger speeds, the added pressure compressing the air along with higher turbulence across the … So as the title I want to make my AIO water cooler a push/pull style and I got 4 fans with 2 different max fan speeds. They pull Note: This is ONLY to be used to report spam, advertising, and problematic (harassment, fighting, or rude) posts. Preference should be given to a "pull" vs. a "push" fan. The objective of any of the fans on or in a PC is to remove the heat. Is 50-55C with liquid temp of 36-40C good when gaming, CPU temperature very unstable with liquid cooling, i9-10900k Temperatures high even with liquid cooling. A single 120 or 140 at medium speed likely improves intake air volume more than the doubling up on the restrictive radiator. Posted by hhechmi on Apr 14, 2009 Seems to be the general concensus. 1 Yes this is true. Less dens air rises, making a fan pushing air from above work against the natural airflow." Does the Radiator Cooling fans pull or push air or can it do both on a 93 Chevy Lumina 3.1 L. Cheers. If you have a blower style GPU it really doesn't matter that much but if you have an open-air style card i would mount the radiator in the front to keep the CPU as cool as possible. If a pusher fan is the only fan used, cover as much of the radiator core as possible. -Dan. Some users choose to mount the radiator to pull in fresh air from the outside; others choose to have it push air out of the case. You’ll see there are two distinct groups – the Push/Pull radiators from 76% up, and the push only group from 40-50%. Really glad to see y'all got straightened out here. Best direction Push/Pull isn't what the manufacturer claims is best. Mounted on the engine side of the radiator, a pull fan does not interfere with airflow at highway speeds. A pull set-up is Infact the most effective. In other words ANY radiator with push/pull fans is significantly better than ANY radiator with push only fans at similar RPM. Push or pull makes no difference for the radiator. Generally the push fans are high static pressure (usually 3-pin DC). The "Pull" fans are the radiator exhaust and blow air away from the radiator. So the SP fan would be good to use for PUSHING the air into the Radiator. Having a plenum between the fan and radiator lets the airflow change direction more gradually, reducing both turbulence and noise. If you push the air the energy converted into heat by running the fan would blow over the CPU. why is it on cars and trucks the rad is in front of instead of behind the engine? All trademarks are property of their respective owners in the US and other countries. Bitwit 269,126 views. Simple question really, should a fan setup for an AIO be between the case and rad (pushing air through the rad) or mounted onto the rad (mounted to the case) pulling air through the rad. I have a large heatpipe/radiator on my processor which came with one fan installed that blows air across the fins (a push fan). Push vs Pull. The key is to find the correct ratio between the 'push' and 'pull' fans. Let’s double check that at medium fan speeds. So the SP fan would be good to use for PUSHING the air into the Radiator. The custom car world almost unanimously agrees that puller fans are more efficient, though there's not really any data out there. And the general belief is that if you are over heating on the freeway its problably due to a radiator that has to small of coolant capacity or restrictive air flow in the engine bay. This is true regardless of where fans being mounted and used .. be it on case vents, cooler or radiator. The simplest mechanical radiator fans are “always on,” in that they spin and either push or pull air whenever the engine is running. I'll build a small circuit to reverse the direction of the fan every few minutes for 20 seconds or so to clear the grass anyway. Sure since you are pushing air through the long ducting it might take a longer time for your cold air to get to the bulb, but eventually it does and it will push the hot air out. So the more FPI and the thicker the radiator is, the higher the heat dissipation increase will be by having fans in push-pull configurations. Is it more efficient an effective for cooling performance to have a fan push air into a radiator or pull air out of a radiator ? Let’s double check that at medium fan speeds. Stand alone, off of the car, the fans push and pull the same cfm, mounted to the car they will have the exact same surface exposure to the radiator face of the radiator, the area of blockage face and back of the radiator is the same as caused by the fan body. Using radiator as intake on the other hand hardly effects GPU temps in game. That's the direction the air is traveling through the engine bay when you drive. This forced the fan to "suck" air through the radiator. From Figure 1, it seems like a simple-enough question, and it … The AF fan would be better at pulling. instead of trying to push air through the radiator which I imagine would be pretty hard at 65mph. When the fans are placed in front of the radiator and air pushes through them it’s called «push». Pusher fans: these fans push air through the radiator and are located on the front of the radiator (grill side). So you have a top mounted AIO, and you want to know if you can flip the fans to exhaust? All shrouded fans should be on the engine side of the radiator. If it was efficient the car companies would have put it in place. Electrical fans can either push air through the radiator or pull air through it. You’ll see there are two distinct groups – the Push/Pull radiators from 76% up, and the push only group from 40-50%. Push/pull is the best, pull is the second best and push is the worst. A pretty informal test I'd seen written up showed a 1-2C advantage to setting up fans as PUSH on a radiator. The radiator functions as an airflow straightener so the push/pull of 2 fans does increase the single fan pressure rating so they overcome the resistance of radiator better which results is an increase in airflow, especially at lower rpm. They push fresh air that enters from the grill through the radiator. The important is to draw a fresh cool air to cool the rad and you want to exhaust the hot air away from the case. Generally the push fans are high static pressure (usually 3-pin DC). Fans move air through the radiator assisting in cooling the engine. Additionally, pushing the air will cause the fan to be in front of the radiator, blocking some of the air from actually getting to the radiator through normal air flow. Always use the right shroud with your fan. dont forget to hose down your motherboards. When the crank shaft rotates, the fan pulley also rotates, and the fan either pushes or pulls air through the radiator. Mechanically pull and push will work the same in a non moving vehicle. Currently, the fans pull air from the case through the rad, and into the environment. well it all depends how you installed your rad, internal or external. In a push/pull scenario, the "Push" fans are the radiator intake and blow air into the radiator. What is the normal idle temps for Ryzen 9 3900xt with Liquid cooler? #6. Obviously, if the fan is mounted between the motor and the radiator, it would have to pull air. Push or pull makes no difference for the radiator. You can attach fans to both sides of the radiators. That said, some basic tests on these “high static pressure” models show that their benefit is questionable in standard air-cooled builds. a good rinse in the sink keeps the dust away. - Duration: 7:19. rads work best with cold air, having them at the intake is best. Of course, if you are after aesthetics or simply want to try push pull go ahead. If, however, the fans are behind the radiator and they pull the air through them, that’s called «pull». Push, pull or push/pull after all? Mounted on the engine side of the radiator, a pull fan does not interfere with airflow at highway speeds. cpu water cooler do i need to change the liquid if so when and how. The fan should blow air toward the engine (i.e., same direction as the air flow when the vehicle is in motion). 3. These are usually used to supplement a mechanical fan if they are cooling … The assembly is set up to be able to add a second fan on the opposite side to pull air out of the radiator (push-pull configuration). Push or pull makes no difference for the radiator. Do you want your GPU to run a bit hotter or your CPU? It makes no difference to the airflow.

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