![]() move the case away from its closest obstacle. Let it run for 10 or 15 minutes and then change something, let it run, and see what happens. Hit everything hard so you're creating the most heat you can. Here's what I do to test things out, and maybe someone can comment on this method. Transfer of thermal energy is proportional to the size of your temperature gradient - so if you idle at 40C when the ambient temp is 20C, then you'll idle closer to 50C when room temp is 30C (airflow and load being equal). This guide aims to help you maximize air flow through your case. Blowing room-temperature air across heatsinks is an effective way to mitigate heat. Obviously ambient temp is going to have a big difference too. ExtremeTechs guide to air cooling your PC. If it's in a corner or up against a wall, you may be creating a pocket of warm air. If your case is inside a desk cabinet like mine is, temps suffer for sure. Two things to consider are the airflow around your case and the ambient temp. In addition, installing extra components can change the fan's operating environment, so this also needs to be taken into account when designing devices.Your setup looks reasonable. In such cases, it can happen that parts with high mounting density are left with little ventilation. But, it should be noted that combining them in one enclosure might render the fan in enclosure A almost non-functional.Īs in the above example where there are multiple enclosures in a device, it is common for thermal design to be optimized for individual enclosures. For example, each of enclosures A and B have a fan mounted, and both fans have sufficient blowing capacities in individual enclosures. The CORSAIR RapidRoute cable management system makes it simple and fast to route. A high-airflow optimized steel front panel delivers massive airflow to your system for maximum cooling. Moreover, when multiple enclosures with fans are combined, lower-capacity fan's performance might be severely hindered. The 5000D makes a stunning, showpiece-worthy PC easy to build, and even easier to keep cool with the space and flexibility to mount multiple 360mm radiators. When two fans are placed right next to each other, the interference increases even more, further deviating from the above-mentioned theoretical values. However, under real-world conditions, the air flow from each fan interferes with each other, so they rarely exactly double. Theoretically, combining them in series will double the static pressure, and combining them in parallel will double the airflow. For example, let's think about combining two of the same fan. When multiple fans are combined, parallel and serial configurations result in different P-Q performance curves. Using this rule, you can approximate the P-Q performance curve for your desired rotational speed from the base P-Q performance curve given in our catalogs. For example, doubling the rotational speed will double the airflow and quadruple the static pressure. In principle, airflow is proportional to rotational speed and static pressure is proportional to the square of the rotational speed. The shape of P-Q performance changes when fan speed is altered, and also when multiple fans are used. The airflow and static pressure values under the fan's operating conditions lie between these two points. This session will explain P-Q performance using a typical axial fan as an example.Īs the above P-Q performance curve shows, airflow is at its maximum when static pressure is 0 Pa, and static pressure is at its maximum when airflow is 0 m3/min. static pressure characteristics, also called P-Q performance curves, show the performance characteristics of fans, and vary with the fan type and model. The airflow and static pressure values under the fan's operating conditions are the points on the curve.Īirflow vs. In our catalogs, every fan model is provided with a curve titled "Airflow - Static Pressure Characteristics" separate from the specifications table. So, what are the airflow and static pressure under real operating conditions? It is impossible, however, to meet either of these conditions in real-world operation, so a fan's maximum airflow and maximum static pressure can never actually be obtained.Īirflow vs. The maximum static pressure is the static pressure when the fan's outlet is completely blocked. The maximum airflow is defined as the airflow when there are no obstructions on either the inlet or outlet sides of a fan. Higher static pressure means that the fan can even ventilate inside equipment with high mounting density. Definitions of Maximum Airflow and Maximum Static PressureĪirflow indicates the volume of air that a fan can move per unit of time, and static pressure is the ability of a fan to push air against resistance. In this fourth session, let's learn about fan airflow and static pressure. However, neither of the maximum airflow and maximum static pressure values can ever be obtained in real systems. When you evaluate the performance of fans, you probably look at the maximum airflow and maximum static pressure ratings in catalogs.
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