AC COOLING FAN - SANYO DENKI EUROPE - #45

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44 AC Fans Sanyo Denki succeeded in the mass-production of AC fans in 1965. Sanyo Denki was the first Japanese manufacturer to have succeeded at this. �œ High performance �œ High reliability �œ Safety DC Fans Sanyo Denki succeeded in the mass-production of DC fans in 1982. �œ High performance �œ Low power consumption �œ Low vibration �œ Low leakage of fl ux �œ High reliability Fan motor is widely used to extend life of your system by cooling off heat of the system that many electrical components are mounted in a very high density and dissipating heat. Since we Sanyo Denki developed “San Ace” which is the fi rst AC fan in Japan in 1965, we have increased fan motor lineup until now meeting customer’s needs rapidly based on our tremendous career. We Sanyo Denki will continue to develop new fans with large air fl ow, low noise, low vibration, and energy - saving design. Overview Overview and characteristics of fan Characteristics The following example is a guideline regarding how to select an appropriate fan for cooling your system 1. Determining of your system specifi cations and conditions Determine the temperature rise inside your system and obtain the total heating value inside your system on the basis of its inputs and outputs. �@Example V : Total heating value of your system�iW�j=100�iW�j �¢ T : Inside temperature rise�iK�j=15�iK�j 2. Calculating the Required Air fl ow for Cooling After the equipment specifi cations and conditions of your system have been determined, calculate required air fl ow to meet the conditions. (Note that the formula shown below only applies when the heat radiation is performed only by cooling air from the fan.) �@Example �@Q': Motion air fl ow�im3/min�j V 100�iW�j Q’= 20 �¢ T = 20 × 15�iK�j �à 0.33�im3/min�j 3. Selecting the Fan After the motion air fl ow has been calculated, select an appropriate fan motor based on the value.The motion air fl ow when the fan motor is actually mounted in your system can be obtained using the air fl ow-static pressure characteristics curve and system impedance.However, the system impedance cannot be measured without a measuring equipment, so fan with 1.5 to 2 times higher air fl ow than the actual maximum air fl ow should be selected (operating air fl ow is one-third to two-thirds of maximum air fl ow). Example �@Q: Maximum air fl ow�im3/min�j Q’=Q × 2/3 Q=Q’× 3/2=0.33 × 3/2 �à 0.5�im3/min�j Next, In case that you select a fan having an air flow of 0.5 (m3/min.) or more and a appropriate size for the space inside your system. For example, If you need a fan of 80mm square, 25mm thickness and 100V, you should select is 109S030 (maximum air fl ow = 0.553/min.). 4. Confi rming the Selected Fan Calculate the temperature rise inside your sysetem when your sysetem having 100 (W) of total heating value is forcefully cooled down by a 109S030 fan. �@Example �@ Q’ =Q × 2/3=0.53 × 2/3 �à 0.367�im3/min�j �@ �¢ T =V/20Q’=100�iW�j/20 × 0.367�im3/min�j�à 13.6�iK�j From the above, the temperature rise inside your system is calculated as 13.6�iK�j. Since the value obtained from the above equation is only a rough target, fi nal fan selection should be based on your actual installation test. How to select an appropriate fan Guideline in selecting a fan V T Q' System Heat source Fan �Ž Static pressure System impedance Operating air flow Air flow Pressure loss Characteristics of air flow versus static pressure and those of pressure losses of equipment We can roughly devide fan into two types which are AC and DC. Sanyo Denki currently has a wider variety of products like Long Life Fan, CPU cooler, Splash Proof Fan, and Oil Proof Fan etc to meet all customer needs. Technical Material Option�ETechnical Material