1 Kn=d' Three regimes are generally identified:(2.1) 1. Free Molecular Flow. The mean free path is of the same order as, or greater than, the characteristic dimension (the range of relatively large Knudsen numbers)~ and gas dynamics are dominated by molecular collisions with the walls of the retaining vessel or pipe. 2. Continuum Flow. Fluid Pressure Drop Along Pipe Length of Uniform Diameter = Velocity of fluid flow (m/sec) D = Diameter of Pipe (m) v = Kinematic Viscosity (m 2 /s) = Density of fluid (kg/m 3) l = Characteristic length, thoe chord of an airfoil . Kinematic Viscosity . Example kinematic viscosity values for air and water at 1 atm and various temperatures. Air Kinematic Viscosity m
Sizing of Piping Sections To determine the size of each section of pipe in any system using piping specific table*, and proceed as follows:(1) Measure the length of the pipe from the gas meter location to the most remote outlet on the system. *(2) Locate that total length in the left-hand column of sizing table , or the next longer distance where GAS PIPE LINE CALCULATION SIZING - El Dorado Sizing of Piping Sections To determine the size of each section of pipe in any system using piping specific table*, and proceed as follows:(1) Measure the length of the pipe from the gas meter location to the most remote outlet on the system. *(2) Locate that total length in the left-hand column of sizing table , or the next longer distance where Natural Gas - Pipe Sizing - Engineering ToolBoxfittings factor 1.5 - equivalent pipe length = pipe length + 50%; pressure drop 125 Pa; energy content in natural gas 37 MJ/m 3; steel pipes schedule 40; Natural Gas - Pipe Sizing-
pipe runs 1-2, 2-4 and 22mm tube for pipe run 4-6, the reworked progressive pressure drops are 0.18 + 0.13 + 0.17 = 0.48mbar, which shows that these tube sizes will be adequate to supply the new boiler. Brian Curry:March 2008 Table 2 Tabulation form - gas pipe sizing Pipe length Power (kW) Flow rate {col 2x 3.6} cv (m3/hour) Assumed diameter PIPE SIZING CHART Natural Gas :Pipe Sizing ChartPipe length must include additional length for all fittings. Add approximately 5 feet of pipe per fitting. Natural Gas Example:A machine with a burner that requires 440,000 BTU would need a 1 -1/4 pipe for a 20 long run. NOTE:The sizing charts above list the specific pipe sizes required for the amount of BTUs for a new gas line PROJECT STANDARDS AND SPECIFICATIONS piping R Universal gas constant, in 8314.3/M (J/kg. mol. K) R e Reynolds number R em Modified Reynolds number R gl Gas/liquid ratio in m³ (gas)/m³ (liquid) at MSC S Relative liquid density (water = 1) T Flowing temperature, in kelvin (K) T o Base temperature = (273 + 15) = 288 K
Pipe diameter and flow velocity calculation use the continuity equation that gives the relation between flow rate, flow velocity, and interior pipe diameter. For gas flow, the equation for perfect gas is used to calculate density from gas constant, absolute pressure, and temperature. Piping material for hydrogen service - W. M. Huitt Co= Outside diameter of pipe (inches) y = Coefficient. 0.4 for ferritic steel in temperatures below 900°F. t = Specified wall thickness minus mechanical and corrosion allowance and manufacturing tolerance. 4 = Safety Factor Therefore:MAWP For a 1" sch. 40 pipe, using the same criteria, the results would be: Refrigerant Piping Design GuideThe liquid line is composed of the following elements: 30 ft (9.14 m) of 1-3/8 inch (35 mm) piping 4 long radius elbows 1 filter drier 1 sight glass 1 globe type isolating valve To determine the equivalent length for the refrigerant accessories use Table 4 and Table
Shop Steel Pipe & Fittings - Products Reece products at a Reece store near you. We stock a ride range of Steel Pipe & Fittings - Products Reece products to suit every home or job. Shop Online for Steel Pipe & Fittings - Products Reece products or visit a branch to chat with one of our friendly staff about your Steel Pipe & Fittings - Products Reece needs. Steel Pipe & Fittings - Products ReeceShop Steel Pipe & Fittings - Products Reece products at a Reece store near you. We stock a ride range of Steel Pipe & Fittings - Products Reece products to suit every home or job. Shop Online for Steel Pipe & Fittings - Products Reece products or visit a branch to chat with one of our friendly staff about your Steel Pipe & Fittings - Products Reece needs. Steel Pipe Dimensions Chart ANSI B36.10 & 36Steel Pipe Dimensions Chart ANSI B36.10 & 36.19 Nominal Pipe Size Outside Diameter (mm) Nominal Wall Thickness Schedule NPS DN OD SCH 5s SCH l0s SCH 10 SCH 20 SCH 30 SCH 40s SCH STD SCH 40 SCH 60 SCH 80s SCH XS SCH 80 SCH 100 SCH 120 SCH 140 SCH 160 SCH XXS 1/8 6 10.3 1.24 1.73 1.73 1.73 2.41 2.41 2.41
Two-Phase Gas/Liquid Pipe Flow Ron Darby PhD, PE Professor Emeritus, Chemical Engineering Texas A&M University Two-Phase Gas/Liquid Pipe Flow - AIChETwo-Phase Gas/Liquid Pipe Flow Ron Darby PhD, PE Professor Emeritus, Chemical Engineering Texas A&M University Pipe diameter and flow rate calculator, onlinePipe diameter and flow velocity calculation use the continuity equation that gives the relation between flow rate, flow velocity, and interior pipe diameter. For gas flow, the equation for perfect gas is used to calculate density from gas constant, absolute pressure, and temperature.
Post A Require