If the fan has a small propeller or blade, the airstream will be drawn towards the outside of the fan. If the fan has a large propeller or blade, the airstream will be drawn towards the center of the fan. The easiest way to determine fan airflow direction is to look at the fan’s propeller or blade. PC fans come in a variety of shapes and sizes, so it can be difficult to determine their airflow direction. When looking at the temperature graph produced by the probe, you will see a line that corresponds with the direction of air flow. The probe should be placed at the front or back of the fan, depending on which side the air is coming out of. The temperature probe is a small, low-cost device that attaches to the computer fan, allowing you to determine the direction of air flow. To use a dynamic meter, place the meter near where you want to measure airspeed (in front of or behind the object being measured) and watch as the reading changes with movement of the object being measured. The reading will be higher if the fan is blowing air toward the meter and lower if the fan is blowing air away from the meter. To use a static meter, place the meter near the fan inlet and note the reading. Static meters use a stationary object to measure airflow speed dynamic meters use a moving object to measure airspeed and rotary meters use a spinning disk or fan to measure airflow volume. There are three basic types of flow meters: static, dynamic and rotary. For example, a flow meter is used in chemical labs to determine how much gas passes through a tube. To determine which way the air is flowing, you need to use a flow meter or a temperature probe.įlow meters are devices used to measure the airflow rate through an opening. But how do you know which way the airflow should go? You can’t just look at the fans, because they might be spinning in opposite directions because of airflow restrictions. If you have a gaming PC, it’s likely that the fan on the graphics card is spinning in one direction and the fan on the CPU is spinning in another. Determining The Direction Of PC Fan Airflow Poor fan airflow can also lead to overheating and system failure. This is especially important when a computer system is running intensive applications or games. Additionally, it helps to remove dust and other pollutants from the system. The air flow helps to keep the computer cool by moving heat away from the system components and out of the case. By changing the intake and exhaust sides, you can also change the PC fan airflow direction in a PC.4 Calculating The Pressure Of PC Fan Airflow What Is Fan Airflowįan airflow refers to the air that flows through a PC fan (or fans). Like any fan, the blowers in your PC have intake and exhaust sides.You need to check them to see if the arrangement is reasonable. Then, they will also arrange the PC fans according to these parts’ locations. Every case may arrange the PSU, CPU, GPU, and hard drive locations differently.By changing the number of PC fans, you can change the case fan direction. If your PC has left extra locations for PC fans, you can then add ones accordingly. In addition, most cases come with one or more fans already installed. The number, location, and size of PC fans are determined by the PC case.When you design the PC airflow diagram of your PC, you need to be aware that: What Determines the PC Airflow Diagram?.This post from MiniTool Partition Wizard will show you how to do that. When you build a PC, you may want to know how to set up the PC fan direction so that your PC can keep cool for a long time.
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