Selection of boiler feed pumps in Software

Making QR in Software Selection of boiler feed pumps

2272 Selection of boiler feed pumps
Denso QR Bar Code Printer In None
Using Barcode generator for Software Control to generate, create QR-Code image in Software applications.
QR Code JIS X 0510 Reader In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Boiler feed pumps must be selected for capacity, head, and NPSH available for each application Each of these factors is critical in the selection of boiler feed pumps
Paint QR In C#.NET
Using Barcode creator for Visual Studio .NET Control to generate, create Denso QR Bar Code image in VS .NET applications.
Denso QR Bar Code Encoder In .NET
Using Barcode generation for ASP.NET Control to generate, create QR Code JIS X 0510 image in ASP.NET applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2006 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Denso QR Bar Code Maker In Visual Studio .NET
Using Barcode drawer for VS .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
QR Code Drawer In VB.NET
Using Barcode drawer for VS .NET Control to generate, create QR Code image in VS .NET applications.
Condensate, Boiler Feed, and Deaerator Systems Condensate, Boiler Feeds, and Deaerator Systems 523
GTIN - 128 Creation In None
Using Barcode drawer for Software Control to generate, create EAN / UCC - 14 image in Software applications.
Bar Code Creator In None
Using Barcode encoder for Software Control to generate, create barcode image in Software applications.
Boiler feed pump capacity
Code 39 Full ASCII Maker In None
Using Barcode creator for Software Control to generate, create Code 39 Extended image in Software applications.
Drawing EAN-13 Supplement 5 In None
Using Barcode encoder for Software Control to generate, create EAN / UCC - 13 image in Software applications.
The capacity of boiler feed pumps must accommodate not only the feedwater requirements of the boilers but also the quality of the steam produced by the boilers as well as the blowdown requirements of the boiler treatment Quality is the name given to wetness of the steam produced by the boiler Pure steam is all gas and has no liquid content Large boilers have water separators and scrubbers that enable the steam leaving the boiler to have very little water and are said to produce steam with close to 100 percent quality Most of the steam boilers on HVAC steam systems have no steam separators and smaller steam releasing areas, so they do not produce high-quality steam Because of this, a factor of 5 to 10 percent must be added to the boiler feedwater requirements to secure adequate pumping capacity The following equation provides the method of calculating boiler feed pump capacity: Boiler feed pump gal/min boiler lb steam/h 60 ( /748) 090 boiler lb steam/h 722 where 090 specific weight of water at the feedwater temperature contingency for steam quality, leakage, and the like (223)
ANSI/AIM Code 128 Printer In None
Using Barcode printer for Software Control to generate, create Code 128 image in Software applications.
Printing UPC-A Supplement 2 In None
Using Barcode maker for Software Control to generate, create UPC Symbol image in Software applications.
For example, if a 10,000 lb/ h boiler is being fed with 230 F feed water, from Table 24, 5938 lb/ft3, and Pump gal/min 10,000 722 5938 233 gal/min
Drawing UCC - 14 In None
Using Barcode creator for Software Control to generate, create ITF14 image in Software applications.
ECC200 Printer In Visual Studio .NET
Using Barcode maker for Reporting Service Control to generate, create Data Matrix image in Reporting Service applications.
Some designers will add a greater contingency than the 90 percent included in the preceding formula, particularly if peripheral turbinetype pumps are used as boiler feed pumps The close tolerances in these boiler feed pumps can subject them to wear Often, the boiler feed pump capacity is selected at double the boiler capacity for these pumps If the boiler capacity is provided in boiler horsepower, Eq 223 becomes Boiler feed pump gal/min boiler capacity (hp) 345 60 ( /748) 090 478 boiler capacity (hp) (224)
Draw Code39 In VB.NET
Using Barcode creation for Visual Studio .NET Control to generate, create Code 39 Extended image in .NET framework applications.
Decoding Bar Code In VB.NET
Using Barcode Control SDK for .NET framework Control to generate, create, read, scan barcode image in .NET framework applications.
If the boiler feed pump operates continuously with the boiler feed rate controlled by a feedwater regulator, a circulating flow in the
Scan Barcode In .NET Framework
Using Barcode reader for .NET Control to read, scan read, scan image in .NET framework applications.
Barcode Decoder In VS .NET
Using Barcode Control SDK for ASP.NET Control to generate, create, read, scan barcode image in ASP.NET applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (wwwdigitalengineeringlibrarycom) Copyright 2006 The McGraw-Hill Companies All rights reserved Any use is subject to the Terms of Use as given at the website
Recognizing Bar Code In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
Paint UPC A In Objective-C
Using Barcode maker for iPad Control to generate, create UPC Code image in iPad applications.
Condensate, Boiler Feed, and Deaerator Systems 524 Pumps for HVAC Hot Water Systems
amount to keep the boiler feed pump from overheating must be added to the pump capacity This can be computed by the boiler feed pump manufacturer and is often in the range of 5 to 20 gal/min
Calculation of boiler feed pump head
Boiler feed pump head requires more care than other HVAC pumps due to the boiler pressure that must be included in the equation for the boiler feed head hb: hb Pf Pd boiler pressure (psig) 144 (225)
where Pf Pd
suction piping friction loss, ft discharge piping friction loss, ft
The suction piping friction loss Pf must include (1) the exit loss from the deaerator or boiler feed system tank, (2) pipe and fitting losses, and, (3) strainer losses if they exist Suction piping friction must be calculated carefully, since it is also part of the NPSH calculation The discharge piping friction loss Pd must include (1) piping and fitting losses and (2) losses through feedwater regulators, if they exist The difference in elevation between the water in the boiler feed system or deaerator tank and the boiler is not figured in the equation for boiler feed pump head for most HVAC boilers If for some reason the boilers are installed at a level different from that for the boiler feed system or deaerator, the elevation difference should be included in the boiler feed pump head equation
NPSHA calculations for boiler feed pumps NPSHA calculation is very important for boiler feed pumps because the feedwater temperature is close to the evaporation temperature This means that the atmospheric pressure Pa and the vapor pressure Pvp in Eq 68 cancel out; this equation reduces to the following:
Copyright © OnBarcode.com . All rights reserved.