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BerichtGeplaatst: 19-06-2018 09:25:33    Onderwerp: Continuously welded Reageren met citaat
BEIJING Mario Edwards Jr Jersey , July 28 (Xinhua) -- Typhoon Nesat, the ninth typhoon of the year, will hit southeast China Saturday, bringing some relief from the sweltering heat in the region, the country's national observatory said Friday.


The National Meteorological Center (NMC) issued a yellow alert for typhoon Nesat on Friday morning, saying that most parts of southeast China will see rain from Saturday to Tuesday with downpours in some areas.


Rain is expected to bring some relief to central and eastern regions, which have seen sweltering heat since June 26, said the national observatory.


The NMC renewed an orange alert on Friday for high temperatures in southeast China and predicted temperatures to decline starting Sunday


Meteorologists suggested local governments in the provinces of Fujian, Zhejiang, Guangdong and Jiangxi take precautions against possible geological disasters, and recommended ships in affected areas return to ports.


The public was reminded to pay attention to weather changes and take precautions during the summer travel peak.


Heat waves have hit most of the country's southeast over the past month. The eastern metropolis of Shanghai, for example, recorded a temperature of 40.9 degrees Celsius on July 21, the highest on record in the city in 145 years.


The extreme hot weather has increased the number of people suffering from sunstroke. The city government has suspended most outdoor work and warned the elderly and children to avoid outdoor activities between 10 a.m. and 4 p.m.


China has a four-tier color-coded system for severe weather, with red being the most serious, followed by orange, yellow and blue.


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Chinese premier meets former WHO chief


Annual maximum peak of Hukou Waterfall seen due to heavy rainfall


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Big year for China's military as PLA to celebrate 90th birthday


China's biggest automated cargo wharf to start operation by end of 2017


Hukou Waterfalls in N China enter summer flood period


Chinese research vessel "Kexue" conducts operation in South China Sea

Industrial Pressure Blower Co's new high pressure small vaneaxial fan finally resolves the problem of boosting air flow in long ventilation ducts of today's large residential houses.

For a long time the efficient ventilation of remote rooms in the large houses could be done only with two independent air supply sources (like a furnace). Ventilating ductwork in contemporary large houses becomes so long and elaborated that even a high pressure furnace fan couldn't generate enough static pressure to blow through the whole length of such a duct. The existing low pressure booster duct fans, even though compact enough to be installed in-line in the house ventilation ductwork, still do not provide enough booster pressure airflow. The usual solution to this problem was installation of two independent furnaces with different air ducts, which is rather expensive option.

A new high pressure (up to 1.5" WG) small vaneaxial Series VA fan is an ideal booster fan for prolonged ducts. Unlike inline centrifugal ventilator, that also generates rather high pressure, the air comes out not from a peripheral outlet ring area, but distributes evenly across its outlet opening like in true axial blowers.

The other advantages of VA Series vaneaxial ventilators is their intrinsic spark-resistant construction because of all-aluminum construction; quiet operation of true vaneaxial design; lower energy consumption due to efficient wheel design.

Eight different sizes from 6" DIA to 10" DIA offer wide performance range for any ventilation duct design. Direct drive design ensures long live, maintenance-free operation. Explosion proof motors are available too, as well as sliding dampers, various mounting options, additional sound isolation.

Another high pressure in-line fan developed by Industrial Pressure Blower Co. is CB Mixed Flow Fan. Mixed Flow fans are an excellent choice for return air, supply, or general ventilation applications where low sound is critical. As compared to similarly sized tubular centrifugals and vane axials, a mixed flow fan will be 5-20 dB quieter! In addition, the mixed flow wheel is extremely efficient and will cut down on operating expenses.

Unique features of the MVA Mixed Flow Fans include:

- Universal Mounting System that allows the unit to be field rotated at the job site
- Compact design with standard slip-fit duct connections for ease of installation
- ULCSA listing for electrical is available
- Continuously welded housing with a standard powder paint finish suitable for indoor or outdoor applications
- A complete three plane vibration test of all assembled fans prior to shipment

Model MVAB:

* Belt drive construction with motor out of the airstream
* Air Handling Quality bearings selected with a minimum life in excess of L(10) 50,000 hours at the maximum operating speed
* Performance capacities from 1,000 to 100,000 cfm (1,700 - 165,000 m3hour) and pressures up to 8 in. wg. (2000 Pa)

Model MVAD:

* Direct drive construction eliminates belts, pulleys, and shaft bearing maintenance
* MVAD design is more compact for space critical application
* Partial wheel widths allow for wide performance capacities ranging from 500 to 105,000 cfm (900 - 170,000 m3hour) and pressures up to 9 in. w.g. (2300PA)

For additional information please refer to http:www.industrialpressureblowerfan.

Oleg Tchetchel
Ventilation Systems Engineer
Industrial Pressure Blower Co.
http:www.industrialpressureblowerblower
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