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#Pipenet spray sprinkler module tutorial manual
PIPENET VISION TRAINING MANUAL SPRAY: CHAPTER 1PAGE 4 OF 48 REVISION 2.1, SEP 2010 The Hazen-Williams Equation is an empirical formula that gives an explicit expression for thefrictional pressure loss. However, by default,the roughness or C-factor of each pipe will be determined by the pipe type of a particular pipe. It should be noted that, for maximum flexibility, the user is allowed to override the roughnessor C-factor value of the pipe type when entering the individual pipe data. With this method, the pipe C-factor is used in the calculations, and so the C-factor must besupplied. The friction factor is represented in PIPENETVISION by the following empirical formulae (in which r is the surface roughness of the pipe).Ģ.1.2 Friction Pressure Losses - Hazen-Williams Method
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The standard values for f can be obtained from a graphicalrepresentation known as the Moody Diagram. PIPENET VISION TRAINING MANUAL SPRAY: CHAPTER 1PAGE 3 OF 48 REVISION 2.1, SEP 2010 The Fanning friction factor depends on the relative roughness of the pipe (i.e., pipe roughnessdivided by pipe diameter) and the Reynolds Number, Re, which is defined as L is the pipe length,Le is the equivalent length of any pipe fittings,f is the Fanning friction factor,u is the fluid velocity, Based on the work of the French engineer Henri Darcy (180358) the followingequation is obtained. The pressure drop due to friction effects can beįound by comparing the theoretical results from the Bernoulli Equation with results obtained inexperiments. Pfric is determined using the Bernoulli Equation, which is a theoretical equation that gives thepressure in pipes, ignoring frictional effects. Pfric is the pressure loss due to friction and fittings,Pelev is the pressure loss due to elevation change,Pplat is the pressure loss due to any orifice plate fitted.įull details of the equations that are used to calculate these pressure losses are describedbelow. PIPENET VISION TRAINING MANUAL SPRAY: CHAPTER 1PAGE 2 OF 48 REVISION 2.1, SEP 2010 The pressure loss, P, in a pipe is described as In this document, the main concepts and features that are specific to theSpray/Sprinkler Module are described. Most of the concepts and capabilities introduced in Chapter 1 User Interface of PIPENETVISION are relevant to this module and should be read prior to reading the training manualsįor this module.
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#Pipenet spray sprinkler module tutorial manuals
In the suite of training manuals for the PIPENET VISION Spray/Sprinkler Module, Chapters 2and 3 are the core of the training course, whereas Chapters 1 and 4 provide useful readingmaterial. One of the differences between the Spray/Sprinkler Module and the other modules ofPIPENET VISION is that, with the Spray/Sprinkler Module, it is not possible to enter a networkuntil either (a) a Sunrise Data File (*.SDF) has been entered and saved or (b) an existingSunrise Data File is opened. The Spray/Sprinkler Module complies with the NFPA rules, which are the universal rulesgoverning the design of fire protection systems in the process plant industry, as far ashydraulic calculations are concerned. The Spray/Sprinkler Module is a steady-state modelling program for designing systems, withthe objective being to ensure that the sizes of pumps, pipes, nozzles, etc. Where necessary, PIPENETVISION can be used to size orifice plates in order to balance or reduce the flow rates. The objective is to ensure that pipes, pumps,hydrants, nozzles and other items perform satisfactorily. Simple and fast to perform these calculations. Such systems are characterised bycomplex firewater ringmains, deluge systems, sprinkler systems, foam injection systems, etc.For these systems, it is usually necessary to perform calculations under several scenarios,such as different fire scenarios and different pump scenarios.
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The Spray/Sprinkler Module of PIPENET VISION was specifically developed for the type offire protection systems that are used in process plants and similar plants, such as refineries,petrochemical plants, offshore plants, and terminals. PIPENET VISION TRAINING MANUAL SPRAY: CHAPTER 1PAGE 1 OF 48 REVISION 2.1, SEP 2010