barcode generator source code in javascript The velocity V can then be determined from in Software

Draw QR Code JIS X 0510 in Software The velocity V can then be determined from

The velocity V can then be determined from
QR-Code Maker In None
Using Barcode printer for Software Control to generate, create QR Code image in Software applications.
QR Code ISO/IEC18004 Recognizer In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Figure 817 Hot-wire anemometer
QR-Code Encoder In C#.NET
Using Barcode encoder for .NET framework Control to generate, create QR Code image in .NET applications.
QR Code JIS X 0510 Generator In VS .NET
Using Barcode creation for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
QR Code ISO/IEC18004 Creator In .NET
Using Barcode drawer for VS .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
Generating QR Code In Visual Basic .NET
Using Barcode maker for Visual Studio .NET Control to generate, create QR Code image in .NET framework applications.
Design Procedures: Part 6 Design Procedures: Part 6 237
EAN 13 Printer In None
Using Barcode maker for Software Control to generate, create EAN-13 Supplement 5 image in Software applications.
GS1-128 Printer In None
Using Barcode generation for Software Control to generate, create EAN / UCC - 13 image in Software applications.
Figure 818 Pitot-tube ow sensor
Code128 Drawer In None
Using Barcode printer for Software Control to generate, create Code 128 Code Set C image in Software applications.
UPC-A Generation In None
Using Barcode encoder for Software Control to generate, create GS1 - 12 image in Software applications.
C VP
Drawing Barcode In None
Using Barcode generator for Software Control to generate, create barcode image in Software applications.
Drawing Bar Code In None
Using Barcode creation for Software Control to generate, create bar code image in Software applications.
(84)
Making ISSN - 10 In None
Using Barcode creation for Software Control to generate, create ISSN - 10 image in Software applications.
Encode UPC Symbol In Java
Using Barcode creation for Java Control to generate, create Universal Product Code version A image in Java applications.
where, for HVAC work, V is in feet per minute and VP is in inches of water; C is a constant related to the density of the uid For standard air, C is equal to 4005 For other than standard air, the value of C is corrected by dividing 4005 by the square root of the new air density ratio For example, the air density ratio at 5000-ft elevation (with respect to standard air) is 0826 The value of C at 5000 ft is therefore Calt 4005/ 0826 4400
ANSI/AIM Code 39 Drawer In None
Using Barcode maker for Excel Control to generate, create Code 39 Full ASCII image in Microsoft Excel applications.
Printing EAN / UCC - 13 In VB.NET
Using Barcode printer for VS .NET Control to generate, create GTIN - 13 image in .NET applications.
The pitot tube can be used for measuring the velocity pressure of any uid with a known density It is often used for measuring water ow The accuracy depends on the accuracy of the device being used to measure the differential pressure The ori ce plate (Fig 819) is used for measuring the ow of all types of uids In HVAC systems, it is used primarily for water and steam ow but can also be used for air ow The reduction of the conduit cross section causes an increase in uid velocity and velocity pressure, thereby reducing the static pressure The change in static pressure can be measured and used to determine total ow rate Q CA H (85)
Bar Code Generation In Visual Studio .NET
Using Barcode creator for .NET Control to generate, create barcode image in .NET applications.
Reading Barcode In Java
Using Barcode Control SDK for BIRT reports Control to generate, create, read, scan barcode image in BIRT applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Generate Code 128 Code Set C In None
Using Barcode creator for Office Excel Control to generate, create Code 128 image in Excel applications.
Bar Code Generation In Java
Using Barcode creator for BIRT Control to generate, create bar code image in Eclipse BIRT applications.
Design Procedures: Part 6 238 Eight
Figure 819 Ori ce plate ow measurement
where Q A H C
ow rate cross-sectional area of conduit static-pressure change constant relating to ori ce and conduit areas and uid density
All values must, of course, be in consistent units The ori ce plate is simple and relatively inexpensive, and therefore it is widely used It creates a dynamic loss because of the abrupt contraction and expansion Its accuracy falls off rapidly as ow decreases below about 20 percent of design (The turndown ratio is, therefore, about 5:1) The dynamic losses of an ori ce meter can be eliminated or decreased by using a venturi (Fig 820), in which the area changes are gradual The ow equation for the venturi is Q C H (86)
where C is a constant determined by the manufacturer and related to size and physical characteristics A turbine ow meter is a small propeller mounted in the uid stream and connected by a gear train to a measuring/totalizing mechanism
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Design Procedures: Part 6 Design Procedures: Part 6 239
Figure 820 Venturi meter ow measurement
The propeller speed is proportional to the uid velocity Because of hysteresis and friction in the gear train, the accuracy of measurement will vary in a nonlinear way and must be corrected for The rotatingvane anemometer, used for measuring air ow, is also a turbine type of meter The paddle wheel type meter is turned by the owing uid, with speed being proportional to velocity This device is connected magnetically to the measuring mechanism and is accurate over a wide range of ow There are other ways of sensing ow rates, but those described above are representative of HVAC use Note that all the modulating sensors may also be used for two-position ow detection
832 Controllers
Controllers may be classi ed by the type of control action and type of energy used for the control signal Control action may be two-position or modulating, with modulating control utilizing proportional, integral, or differential modes or some combination of these Control energy sources include pneumatic, hydraulic, electric, electronic, and self- or system-generated The continued development of transistor technology into microchip technology with programmable control adds the words analog and digital to the vocabulary Analog suggests continuous modulation of a signal by voltage or current ow, while digital
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Copyright © OnBarcode.com . All rights reserved.