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When a centrifugal fan is to be installed for any industrial process, the airflow requirement has to be determined before considering different fan arrangements to accomplish the desired performance. Fans typically work better when they have optimal size that fits ideally in the designated area, placed in the right location to withstand the operational conditions and have proper drive method to modulate the speed. When considering different centrifugal fan arrangements, the motor will have various placement settings with respect to the drive side of the fan. The fan can use different drive methods, depending on whether the motor is independent of the fan as in belt drive arrangement or motor connected directly to the fan axle or shaft as in direct drive configuration.Here are some typical fan arrangements defined for single width single inlet and double width double inlet centrifugal fans.Arrangement 1 : SWSI (Single Width Single Inlet)This is for belt or direct drive connection.

The impeller is overhung on the motor shaft and two bearings mounted on pedestal base.Alteative arrangement: Bearings mounted on independent pedestal, with or without inlet box.Arrangement 2 : SWSI (Single Width Single Inlet)This type of arrangement is similar to the above except that the impeller is directly overhung to the shaft with bearings and a coupling mounted on bracket supported by fan housing or casing.Arrangement 3 : SWSI (Single Width Single Inlet) & DWDI (Double Width Double Inlet)This is for belt or direct drive. Impeller is mounted on shaft between bearings supported by the fan casing.Alteative: Bearings mounted on independent pedestal with inlet box.Arrangement 4 : SWSI (Single Width Single Inlet)It is harmonic reducer direct drive arrangement where the fan wheel is connected direct to the motor shaft. No requirement for pulleys, belt drives or additional shaft bearings.Prime mover is mounted to the full length pedestal base.Because of close coupling of the motor, centrifugal fans in Arrangement 4 have a limitation of usage under high temperatures.To obtain optimal performance, it is common to add air volume control devices like dampers, vanes and VFDs.Arrangement 7 : SWSI (Single Width Single Inlet) & DWDI (Double Width Double Inlet)This is similar to Arrangement 3, except that it's motor base is attached to the drive side.It is a direct drive arrangement through flexible coupling, but with a base for prime mover.Arrangement 8 : SWSI (Single Width Single Inlet)Directly connected to the fan shaft and bearing combination through coupling.

Same as Arrangement 1, but with a base for prime mover.Since the motor is away from the shaft, the arrangement can be used for higher air stream temperatures.Arrangement 9 : SWSI (Single Width Single Inlet)For belt drive, similar as Arrangement 1, except that motor is mounted on the fan, either on the left or right side of the bearing pedestal, rather than on the floor.Limitation on the airstream temperatures because of close proximity of motor to the fan scroll.Arrangement 10 : SWSI (Single Width Single Inlet)Same as Arrangement 9 for Single Width Single inlet, but with motor mounted inside bearing pedestal.Since the motor is fitted under bearing pedestal, the motor gets moderate protection from outside weather conditions. However, the arrangement allows a restriction on motor frame size.The proximity of motor to the fan scroll allows a limitation on airstream temperatures. To avoid the effects of high operating temperatures on fan motor, an insulating panel can be used separating them.

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برچسب : نویسنده : drivegears drivegears بازدید : 204 تاريخ : دوشنبه 27 اسفند 1397 ساعت: 9:06

Suspension lift kits are a significant part of 4WD as they offer various benefits when used in different situations. As an owner, you must have the required idea to optimize the performance. If you want to buy suspension lift kits for your 4WD, and not thought about, which one to buy, there are a couple of questions and situations you want to consider before buying. Getting a life kit for your drive also means that there will be few enhancements in your vehicle like a smoother ride, better ground clearance with an improved look and feel.

Though you will look for these things in your kit initially, but after buying the kit, you will understand that there are a lot more things to consider. Do a little bit of research first and you can understand the variety available in the market and buy the ideal one for your vehicle. Performance or Budget? The first things you need to decide before buying 4wd suspension lift kits is you are buying it for the sake of Hydraulic butt fusion welding machines performance or to enhance the overall look of the car? If you are buying it to lift the car so that the ride is smooth on a bumpy terrain, then a suspension lift kit is the way to go. However, if the only look of the vehicle is your primary conce, then buying a body lift is your option. They are cost effective. As they are cost effective, if you are tight in budget, the body lifts are just the right kind for you. Are You Going To Install It All By Yourself? There are some suspension lift kits, which are incredibly easy to lift. On the other hand, there are some that require professional guidance. The professional help to install your lift kits is also significant as there are various parts in it requiring a lot of adjustments to ensure your drive’s performance is optimized. Thus, you got to think about it before buying any.

Do You Know The Right Size? Buying a lift kit which has adjustable height measurements will help you complement the drive accordingly. The lift affects the various parts that might also need further adjustments. Thus, it is highly recommendable to consult a professional before buying or installing the drive as things might get overwhelming. If you are looking for the different kinds of suspension lift kits available in the market then, here is an overview of what you might get. Spring Over Axle- It is quite a popular thing among the rock crawlers as it is best for articulation. It is the term used for up and down wheel travel. Shackle Reverse- It is a truck lift kit whose primary work is to provide smooth rides on mild terrains like forests, deserts, and scenic trails too. Coil Suspension- It is the best match for any four wheel drive and you can use it under expert guidance. Consult the experts before buying if you are confused which one to buy for your drive.

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برچسب : نویسنده : drivegears drivegears بازدید : 197 تاريخ : دوشنبه 20 اسفند 1397 ساعت: 9:07

Do you have a desire to travel around Delhi, in a new car every now and then? Most of us wishes for the same and the matter of the fact is this can actually be done. Now, you may ask how? The answer to your question is Voler cars. Voler is definitely the most practical and stylish way of getting a self drive car rental service. Irrespective of the car we acquire, be it a big swanky one or a small budget friendly car, we have an equal shared responsibility towards it. Getting a self drive car rental in Delhi is not going to be very simple.

As consumers, we have a shared responsibility towards the car that we hire. Here are few rules that you must keep in mind, before getting a car on self drive. Before any car hire company gives you a car on rent, they would want to know you as a driver. Nobody would want to hand over an asset from their company to someone who has a terrible driving record. For those with a clean driving precision gear reducer record, getting a car on rent at discount will never be hard. Next, after you have got the car on hire, be cautious with your speed limit. When you are driving a rented car, you have to be extra cautious. Of course you can drive around the city in the rental car at a speed as high as possible, but as a dependable citizen you must showcase some responsibility and keep the speed limit between 80-100 km/hr.

Lastly, the car that you hire must be retued back to the car company in a condition as good as it was given to you. Your car should not smell foul or must not contain any garbage in it. It is true that it is not your car, but being inconsiderate to the car hire company should be the last thing that you would want to do. To get a car on rent you can visit the web portal of the car hire company that you can trust. Enter all the necessary details, mention the pickup and the destination spot and have a car waiting for you at the desired time. One can also make use of a mobile application to get a car on hire from a cab company. Download the app and follow the steps as required to get your booking confirmed. You can also call the company on its toll free number to make your car booking.

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برچسب : نویسنده : drivegears drivegears بازدید : 190 تاريخ : دوشنبه 13 اسفند 1397 ساعت: 12:21