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Sam Dekker Clippers Jersey
Tweet Topic Started: Mar 20 2018, 01:24 AM (101 Views)
wuming Mar 20 2018, 01:24 AM Post #1
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MEXICO CITY Pirates Drew Hutchison Jersey , July 24 (Xinhua) -- The Mexican Formula 1 driver Sergio Perez, from the Sahara Force India team, suffered an accident on Friday during the first practice for the Hungary Grand Prix.


According to reports Pirates Dave Parker Jersey , he suffered a suspension failure on the right-rear side as he came out of a turn at high speed. The jolt sent his car into a crash barrier but it spun back onto the track. However, one of the front wheels was bent beneath the chassis by the impact, causing the car to flip over.


Thankfully Pirates Bill Mazeroski Jersey , the driver was able to walk away from the crash and medical tests revealed he had sustained no injury.


In a Facebook post, he wrote "Thanks for all your support. We had a little failure on the rear suspension of the car, which was what caused the incident. Thank God I'm alright and we're ready for the rest of the weekend."


Sahara Force India has opened an investigation to determine the full cause of the malfunction.


Prior to the accident Pirates Barry Bonds Jersey , Perez had set the eighth fastest time on the track but the practice session was dominated by the Mercedes duo of Lewis Hamilton and Nico Rosberg.


The Hungary GP will take place on Sunday, with Hamilton, Rosberg Pirates Andrew McCutchen Jersey , and Sebastian Vettel seen as the favourites.

Fans and Blowers Company air-handling units (AHU) can be used effectively for negative pressure control at manufacturing facilities.

Space Pressure Control is used to minimize and control the exchange of air between the building and the outside environment or from one building area to another. This may be accomplished in three ways:

- Constant air supply with variable-speed exhaust;

- Variable air supply with constant-speed exhaust;

- Variable Return-Air.

Fans and Blowers Company produces Make-Up Air Units for larger industrial plants ventilation requirements.

Negative Air Pressure in industrial manufacturing facilities can create problems such as:

* Exhaust fans losing performance, as the building pressure becomes negative.

* Pilot light outages and exhaust system failure on natural draft gas equipment.

* Cold air drafts and infiltration of dirt and contamination from outside.

* Difficulty opening or closing exterior doors.

Constant air supply with variable-speed exhaust is recommended where a hot or contaminated environment must be ventilated while maintaining room pressure. Unit may be interlocked to that it only operates with the exhaust system.

Variable Air Supply with constant-speed exhaust may be preferred where fume exhausters or fume hoods are used to provide critical ventilation of contaminants from a “clean” environment while make-up air is used to maintain a positive pressure to prevent infiltration.

In either case, when the system is enabled Willie Stargell Jersey , a pressure sensor in the building space monitors room pressure. When a high or low pressure reading is detected, the air supply or exhaust is adjusted to compensate.

When controlling a Variable Air Supply unit (or VAV Unit - Variable Air Volume), two methods are available:

- Damper Control - Unit discharge damper is adjusted using the damper motor.

- VFD (Variable Frequency Drive) – Controller adjusts the speed of the blower motor Discharge Damper adjustment is an older method of controlling discharge air volume. Its main advantage is that it only requires positional control of a small discharge damper motor. The major disadvantage is the wasted Horsepower of the blower motor at lower delivery rates.

In recent years Tony Watson Jersey , fan speed control using VFDs has become economical. In this application, a standard energy efficient motor is usually adequate down to 75% of normal motor speeds. For a fan speed down to 25%, a premium efficiency motor is required. Inverter duty motors are not usually necessary since at 25% of normal fan speed Starling Marte Jersey , air delivery is minimal.

Variable Frequency Drives are also programmable. They are used to provide soft starts and to ramp motor speed up or down in response to signals from the control system.

Finally, in a generally “clean” environment without a critical need to remove large quantities of contaminants, a simple solution to building pressurization is a Return Air Unit with the return air damper motor controlled by building a pressure sensor. When building pressure increases Roberto Clemente Jersey , more inside air is returned through the unit, relieving the pressure. When building pressure falls, more outside air is supplied to the building in order to “pump up the pressure”. Precise control of building pressure by a single piece of equipment can thus be achieved.

Additional information can be found at the Canada Blower company web site http:www.fansandblowers.netwallpropellerfans

Susan Terlitski
Air handling Systems Designer
fans@cogeco.ca
Fans and Blowers Company
http:www.fansandblowers.netupblastfans
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