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HP Pavilion dv9000, dv8000, dv3000, dv2000, dv1000 series The HP Pavilion dv6000 was a model series of laptops manufactured by Hewlett-Packard Company that featured 15.4" diagonal 16:10 displays. [ 1 ]
Due to the low pressure, high volume air flows they create, most fans used in computers are of the axial flow type; centrifugal and crossflow fans type. [7] Two important functional specifications are the airflow that can be moved, typically stated in cubic feet per minute (CFM), and static pressure. [8]
HP Pavilion a367c (2003) HP Pavilion HPE 580jp (2011) HP offers about 30 customizable desktops as of 2012 [update] ; of these, 5 are standard HP Pavilion, 4 are Slimline, 6 are High Performance Edition (HPE), 5 are "Phoenix" HPE Gaming editions*, 5 are Touchsmart, and 5 are All-In-One.
The affinity laws (also known as the "Fan Laws" or "Pump Laws") for pumps/fans are used in hydraulics, hydronics and/or HVAC to express the relationship between variables involved in pump or fan performance (such as head, volumetric flow rate, shaft speed) and power. They apply to pumps, fans, and hydraulic turbines. In these rotary implements ...
In the case of an ideal lossless fan system (i.e. =) the SFP is exactly equal to the fan pressure rise (i.e. total pressure loss in the ventilation system). In reality the fan system efficiency is often in the range 0 to 60% (i.e. η t o t < 0.6 {\displaystyle \eta _{tot}<0.6} ); it is lowest for small fans or inefficient operating points (e.g ...
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A low pressure ratio fan (such as that used on a high bypass ratio turbofan) has a range of working lines. At high flight speeds, the ram pressure ratio factors up the cold nozzle pressure ratio, causing the nozzle to choke. Above the choking condition, the working lines tend to coalesce into a unique steep straight line.
When a centrifugal fan is specified for a given CFM and static pressure at conditions other than standard, an air density correction factor must be applied to select the proper size fan to meet the new condition. Since 200 °F (93 °C) air weighs only 80% of 70 °F (21 °C) air, the centrifugal fan creates less pressure and requires less power.