Instead of fan some air coolers are equipped with blower with multiple speed controls. The FDS … Seems a bit close. 06-20-10 07:52 PM - Post# 1933478 In response to RunAndGun Sean, take a look at the distance between … The optimum distance has been specified on the base of flow and on-coil temperature parameters. Figure 4 - Fan Discharge Elevated so Top of Unit Is Higher Than Top of Wall CORRECT Induced Draft Counterflow Unit Layout NOTE: Fan cowl extensions require external support, supplied by other for: Fan cowls over 48.75" from the fan deck for 8.5x units and smaller, and fan cowls 51.25" from the fan deck for 3Mx and larger units. Cooling performance of fans placed in an array was also explored by Kimber and Garimella [19]. User Info. 2. As shown in the figure, it is assumed that a shroud is present to confine air flow to the fin channels. Download : Download full-size image; Fig. Simulation 2.1. ->You are running a single electric 16" fan. Too far out of the shroud and the fan will pull air from around the shroud and not through the radiator. 1.3.6. This will leave 25" from each wall to the blades and 50" between the blades of each fan as shown above. Caution This is Not Always The Fan Shroud. tos. If the fan is too far forward the fan will cause a cavitation of air in the shroud. The optimum distance between radiator fan and radiator is 0.3 x fan diameter. Answer Save. 5) Is a curved blade fan better than a straight blade fan? Once the ventilation ducts are in place, the installation of the range hood is relatively simple. Don't forget air is a fluid. Thread starter Matrices; Start date May 28, 2010; May 28, 2010 #1 M. Matrices Supreme [H]ardness. When you try to squeeze in a pusher fan in front it gives you very little clearance (1/4-1/2") between the fan and radiator. I am going to mount the radiator externally on top of my case, and realize I obviously need to allow for a gap to allow the fans to draw air through the radiator. Status Not open for further replies. During this process the fan draws the required air from outside into the unit through the cooling pads. Is there any point in placing distance between a fan and radiator if you have no shroud? They found the array spacing, or distance between fans, could have a significant effect on the thermal performance of the array. The distance between the fan blade and fan ring should preferab ly not exceed 6 mm as shown in the figure. does any distance, say 1/2" from the radiator help? Sponsors. Still have questions? Prior to yesterday, I was running a WH staggered 4 core with a Duff pusher fan in front and the stock fan and shroud behind the radiator. The height, or the distance between the range and range hood, varies according to the type of cooktop, suction and exhaust capacity, and the type of unit. 0 0. Get your answers by asking now. Trending Questions. Because the fins and/or tubes of the radiator do not match exactly the same spacing and line up correctly with the AC coil, it is advised to design a space in between the AC coil and the radiator to let the air move in semi straight/deflected lines, but not eddy or build unorganised pressure to any extent behind the AC coil. Distance between radiator and fan? The generally recommended minimum distance between a axial fan intake and the back of a cooling coil for example is about 1.5 times the diameter of the fan. I like lots of clearance and a fan shroud. 1984 4WD Short Step Side 305 4Bl Quadrajet, 700R4 Email Report Don M Contributor Posts: 152 Loc: Tampa, Fl. Answer: Sometimes a curved fan is better than a straight fan, but not always. And does the above answer change if the fans blow air onto the rad instead of sucking air off the rad, or vice versa? Send Private Topic View Profile. If you restrict the fan intake area you are adding pressure losses that the fan must overcome. Re: Fan Clutch to Radiator Distance 07-20-06 04:46 AM - Post# 972018 In response to ss3964spd You're right Dan, There is no spacer used between the fan clutch and waterpump pulley.The spacer that I am referring to is the shroud type spacer between the radiator support and the radiator. I have just under 1/2" between the fan and radiator. As part of the LS swap, I am using a 2005 GTO radiator and fan setup. In order to ensure full coverage of the coil a minimum distance between the fan and the heat exchange coil is required. My gut feeling is biased toward the inlet to try to knock down the temp early. New radiator was installed and I've again been driving the car for past 1 1/2 weeks...but while changing my engine oil yesterday at my brother's house, he pointed out the widened gap between the shroud for the electric fan and the radiator core. SN Certified Technician. Typically, the axial fans used in a unit cooler draw air through the coil exhausting chilled air out through its mounting guard. 130-150 mm is acceptable as a minimum distance. The recommendation is that there should be at least 1/3 of the fan diameter distance as a minimum . A. DWDI fans minimum 24” or one wheel diameter between the side walls and the fan inlets on both sides of the fan. At 12 feet, I'd try anything between 5 and 8 feet. The fan blades should be 1/2 in, 1/2 out of the shroud opening. Noe that it is mounted there is just enough clearance to get the belts between the fan and radiator (scraped a bit, but still goes on). The velocity and temperature distributions were analyzed via FDS simulation. Relevance. Joined Feb 5, 2003 Messages 5,256. I have the heavy duty RV cooling fan and fan clutch installed with a modern aluminum 4 tube core radiator.....Sean. The optimum spacing was found to be approximately 1.5 times the vibration amplitude. is a certain distance too small to have any effect or certain distance too far? With a shroud, the fan can be as far away as you want as long as the shroud is sealed to the radiator. Decreasing the spacing between fins increases efficiency and it is an inexpensive solution. As a general rule, the closer the hood is to the cooking surface, the more effective the suction and evacuation of foul air will be. The radiator is set back because I originally planned on using a GTO condenser as well. It makes the fan pull air through the radiator and it contains the fan if it breaks. I am going to be pulling 3 Sanyo Denki 1011s through a PA120.3 radiator (thickness approximately 2.5 in). The fan blades are centered in the shroud like it shows in the assembly manual. Following types of fans have externally mounted inlet vanes and require additional With ambient temperatures down to -40 o C, … forced air cooling fan curve pressure drop maximum fin density baseplate backplane fin height thermal management improving performance This paper discusses the optimum fin spacing for a fan-cooled heat sink. Given the diameter of the motor hub, the outer diameter of the fans used on the typical race radiators curve for optimal design is minimal. In cooling mode, at least eight inches of clearance between the fan and the ceiling is required to allow optimum airflow into the fan blades. Today, many jets are tested using numerical CFD techniques and models that consider multiple variables (Król and Król, 2018). 1 Answer. What should the distance be from fan to radiator on a 1966 Barracuda with 225 Slant Six, original 5-blade fan and 3-core v-8 radiator? You can vary this formula quite a bit. The heat sink geom-etry is shown in Figure 1. Join. Then divide the span of the fan by 2 to find the radius or center location of the fan (26"). Check FEAD Pulleys, Crankshaft Damper, Crankshaft Pulley Etc. Distance to Rad and Shroud Overlap. Apr 27, 2001 896 68 59 Cincinnati Ohio. i notice that many folks using the PA120.3 does not use the shroud... is it because of the amount of space required for a shroud? The shroud serves 2 purposes. In this case that is 51" (25" plus 26"). 130-150 mm is acceptable as a minimum distance. These fans do a better job of creating a low-pressure area behind the radiator than they do of pushing air through a radiator. Assume that the distance between the walls is defined by L and the distance of condensing unit from the supporting wall is defined by D. Fig. 1/2" should be max distance from radiator for proper cooling if you don't have a shroud. At least 2 -3 ins. This is often not possible due to lack of space. The optimum distance between radiator fan and radiator is 0.3 x fan diameter. If you sit 12 feet back, separate the front left and right speakers by about 6 feet. Caution Not Always The Radiator. Fin spacing is the distance between fins which are used on air coolers, dry coolers, evaporators and condensers. To Rear of Fan – Minimum of 1” (25.40 mm) Clearance Between The Trailing Edge Of The Fan To The Closest Object. Favorite Answer. As in, biased towards the inlet side or the outlet side. The stock metal fans weren't designed for high rpm. Re: Optimum distance between fan and radiator « Reply #27 on: July 28, 2010, 10:26:50 am » air doesn't "bend" going through the radiator core, it changes direction once through the core as it is drawn into the fan blade. A pusher fan, in the context of a car's cooling system, is a fan mounted to the front of the radiator. Fan blade clearances are intended to allow for engine shift due to severe braking or engine torque, fan loading or unloading with on / off fan drives, open or closed shutters, etc. USA Reg: 09-22-07. Then, add the distance from the wall to the radius of the fan to locate the distance from the wall to position the fan mounting hardware on your ceiling. The Zhong Liangshan tunnel of Metro Line 1 of Chongqing city, China was chosen as a case study of the optimal distance between jet fans. Therefore, the optimum solution is to have as little spacing as possible. 1.3.5. Trending … The farther you go, the closer the distance between the numbers approaches the ratio that can never be reached: 1.618033988… to infinity, to 1. Jul 28, 2016 #1 I am sizing up a radiator for a newly built room. Start by separating your front left and right speakers by about half the distance that you sit from the speakers. When using dual fans (DWDI or SWSI) and fan inlets face each other, minimum clearance between fans to be 24” or 1-1/2 wheel diameters. A fin spacing of 1.5-5.0 mm is used for dry air cooling. so how much distance between a fan and a radiator will be efficient? Reaction score 1. Discuss Radiator distance from floor / window cill in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net. ->There is simply not enough room for a shroud.->The fans is configured as a puller Is there an optimum mounting position for the fan on the radiator? However, I ended up ordering the Vintage Air surefit kit based on the price of new GTO parts. Most of the buyers do not really pay much attention to the air cooler types because they care only about tank size and efficiency. Is this normal? There is flex in the body mounts and motor mounts. I have 3 row stock radiator and mechanical clutch fan with large plastic fan shroud. ->The fan does not cover the radiator surface (31x19). Golden Ratio can be derived from an exponential progression known as the Fibonacci sequence or summation numbers: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89… etc. Mar 10, 2015 #2 The fan shroud kinda eliminates any need for getting the fan real close to the radiator. 2 shows the boundary conditions of the model. Fire dynamics simulator. Russel. For Possible Interferences Blade Tip Clearances – Blade Tips (Ends) Should Be ¾ “ (.19.05 mm) From The First Obstacle To The Sides. Ask Question + 100. My question is this: how many inches should I allow between the case and the radiator to allow the fans to perform … Like Dean said, the fan needs to be halfway in and halfwy out of the shroud regardless of the distance to the radiator. We were required to have a metal shroud on the dirt track cars. Join Yahoo Answers and get 100 points today. 2. The pressure losses are static pressure, which is what the fan performance is rated on. The distance between the fan blade and fan ring should preferab ly not exceed 6 mm as shown in the figure. Don H. 1 decade ago. Now, the bay window is quite large so the space underneath it isn't much. This is often not possible due to lack of space. What is the ideal distance between fan blade and radiator? Is biased toward the inlet to try to knock down the temp early are pressure. Do a better job of creating a low-pressure area behind the radiator than they of! Back because i originally planned on using a GTO condenser as well, 2010 ; May,. 5 ) is a fan and radiator is 0.3 x fan diameter mounted to the radiator forward the blade! Chilled air out through its mounting guard [ 19 ] area behind the radiator Matrices ; date! Losses are static pressure, which is what the fan blades should be 1/2 in, towards! Equipped with blower with multiple speed controls May 28, 2010 ; May optimum distance between fan and radiator, 2010 # 1 am... 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