multi-purpose solutions for total pump head (pressure drop) calculation in series (branch) pipe + loop ring main pipe network. Hardy Cross method with Hazen-Williams equation or Darcy-Weisbach equation are used in solving loop ring main pipe network. Various selection and calculation tools are provided. They are: - Flow unit converter, Length unit converter, Pressure unit converter. - Pipe diameter sizer, Pipe material & ID selection. - Valve & Fitting selection (Equivalent length Le method or Resistance coeff K method). - Orifice plate pressure drop calculator.

a push for mobility and productivity - the ultimate multiple pipes friction loss calculator on Windows Please enable JavaScript to view this page content properly. Please enable JavaScript to view this page content properly. Please enable JavaScript to view this page content properly. To take a glance at all pocketEngineer software and OS requirements, click . Managing pipe pressure drop (total pump head) design calculations every other day...... there is no magic to the solutions. But, (designers and solution providers) are always looking for a better way to do things and deliver the solutions in a quicker and easier way .... easy.Pipe.Friction (ePF) : A practical yet simple, efficient way of pressure drop (head loss) calculations for different field services. : Provide solutions to meet your deliverables at anytime, anywhere. : Pipe distribution network in series (single or multiple) and/or pipe in single loop ring main; General water piping, Sewerage and drainage pumping system, Chilled water and Condenser water piping, Irrigation piping, Fire hydrant, Fire hose reel, Wet rising main, Standpipe, etc. : This program is not designed for fire sprinkler 'Tree or Grid' system and the like. Also, it is not designed for pipe network with two loops conjoined by a common link pipe. : Just-in-time results to meet your deliverables. Results are saved in text file. You can reformat, cut and paste, edit, and so on to suit your desired format. Hardy Cross method and Hazen-Williams equation or Darcy-Weisbach equation are used in solving loop ring main pipe network. The flow (Q) and Pressure drop (Pdrop) in each pipe segment are iteratively solved by relationship equations between head loss and flow. Any series (branch) pipe that joins the loop (upstream and/or downstream) is calculated separately using series pipe calculation. The total pressure drop (head loss) in the system is the summation of all components causing resistance to flow. : This program is designed with one set of units system for all calculations. For input simplicity, built-in units conversion tools are available. Pressure Drop (Pdrop) is displayed with the following units Various selection and calculation tools are provided. They are: The Loop Model adopted in ePF Loop program is a source, a with one or more discharge outlets. Each pipe segment can have an outflow discharge. There is no limitation to the number of pipes that can be created in the system. Options available for major and minor losses calculations are Hazen-Williams equation (with equivalent length Le method), or Darcy-Weisbach equation (with resistance coefficient K method). The simplest loop pipe network is formed by 3 pipes as shown in the diagram below. The loop has a single-input source. For a given looped pipe network, the outflow discharges (Qout) are known. However, the flow (Q) in each pipe of the looped pipe network and its head loss (Pdrop) are unknown. This involves solving non-linear equations iteratively by the Hardy Cross Method, i.e., Q = 0 at a junction (known as Kirchhoff's law) Pdrop = 0 around a loop (known as Kirchhoff's law) Notice that the calculated flow and pressure drop in pipes 102 & 103 are negative (-ve). The -ve flow (Q) means the flow in that pipe segment is in an anti-clockwise direction. Likewise, the -ve pressure drop (Pdrop) in that pipe segment simply indicates that the flow is in the anti-clockwise direction. The results obtained using is shown below: The results obtained using is shown below: In series model, ePF Loop program is capable of computing pressure drop in single pipe or multiple pipes without limitation to the number of pipes that can be created in the system. The methods employed in the calculations are: (1) Hazen-Williams equation and equivalent length (Le) method for valves and fittings. (2) Darcy-Weisbach equation and resistance coefficient (K) method for valves and fittings. The total friction loss is the sum of all the friction losses in each section of the pipe plus local losses. For a pipe network that contains series pipes and a single loop ring main, the pressure drop in the series pipes and looped pipe are calculated separately. The total pressure drop (head loss) in the system is the summation of series + loop components. If you need to plot 2 pumps in parallel curves and system curve, see . >> see results comparison example (ePF Loop vs a 3rd party program) >> Analysis example: Loop pipe ring main, see at Please enable JavaScript to view this page content properly. Please enable JavaScript to view this page content properly.]]>

Pipe_f.Loss is specially developed to feature 2-K Method for pipe friction loss & pressure drop calculations. It's a plug-and-use Windows PC program. (a)built-in selections for valves & fittings losses using 2-K Method developed by Hooper. (b)4 options (Colebrook, Swamee, etc) for solving friction factor. (c)design as easy as "Select & Click" with full built-in database, conversion calculators, guides, etc. (d)save/open project, save results to Rich Text File (.rtf) for formatting & printing. (e)fully mobile â??plug-and-useâ?? program with no setup requirement. (f)in SI & IP units. For worked example, see http://pocketengineer2.sharepoint.com]]>

A handy design tool for pipe sizing + pipe friction loss, chilled-water flowrate, etc. Pipe Sizer employs 2 options for pipe friction loss calculation, i.e., Hazen-Williams equation or Darcy-Weisbach equation. (a)chilled, condenser & hot water calculations (Find capacity, flowrate, dT). (b)pipe sizing + pipe frictional loss rate (Hazen-Williams or Darcy-Weisbach methods). (c)cold pipe insulation thickness calculation. (d)"save-to-file" function for printing. (e)in SI units. For worked example, see http://pocketengineer2.sharepoint.com]]>

Traditionally, tables or charts are used for manual calculations. With CompAir program designed for mobility, you can now do pipe sizing at anytime, anywhere. CompAir program is engineered for ultimate flexibility with 3 built-in model equations for solving flowrate, pipe size and pressure drop. The 3 model equations adopted in CompAir program are (1) General Compressible Flow Equation. (2) IoP (Institute of Plumbing) / CAGI (Compressed Air and Gas Institute) model. (3) BCAS (British Compressed Air Society) model. In individually selectable SI-IP units. See worked example at http://pocketengineer2.sharepoint.com]]>

Qcondensate program, an HVAC mobile design tool, performs quick calculations for AHU coil condensate, air mixing and state point psychrometric air properties. It is specially designed by a professional engineer to replace the conventional psychrometric chart (restricted scale and barometric pressure). (a)calculate AHU coil condensate flowrate. (b)calculate air mixing and state point psychrometric air properties. (c)accurate formulation based on ASHRAE Fundamentals 2009. (d)save results to text file for printing. (d)fully mobile program without setup requirement. (e)in SI & IP units. See worked example at http://pocketengineer2.sharepoint.com]]>

KitchenExhaust is a commercial Kitchen Hood Exhaust calculation software designed for Windows PC. It is specially engineered by a professional engineer for design mobility & quick calculations. (a)calculate kitchen exhaust airflow rate for various built-in hood configurations in accordance to Singapore Standard SS 553 (formerly CP13). (b)filter sizer. (c)louvre sizer. (d)built-in data & guides. (e)"save-to-file" function for printing. (f)mobile & independent program (no setup is required). (g)in SI & IP units. For worked example, see http://pocketengineer2.sharepoint.com]]>

Battery room ventilation to EN 50272-2 & EN 50272-3 Standards. (a)battery room ventilation calculations by Hydrogen concentration dilution method. (b)"Select & Click" with built-in data like Igas, battery rated capacity, etc. (c)louvre sizer. (d)save results for printing. (d)in SI & IP units. For details, see http://pocketengineer2.sharepoint.com]]>

Qcool Check program provides fast and easy access to various common cooling load check figures. The check figures provide an estimation of total building cooling load needs. (a)select/display cooling load check figures at your finger tips. (b)various published cooling check figures options based on Ashrae pocket guide, Carrier table, & Carrier CSQR. (c)function for user to edit and keep own project records. (d)fully mobile program without setup requirement. (e)selectable units available in SI and IP. For details, see http://pocketengineer2.sharepoint.com]]>

Handy calculator to determine required insulation thickness for duct and pipe. (a) calculate insulation thickness and Heat gain for cold duct, cold pipe & hot pipe. (b)embedded data - just "select & click". (c)results "save-to-file" for printing. (d)in SI & IP units. For worked example, see http://pocketengineer2.sharepoint.com]]>

- duct sizing using equal friction or velocity method
- find duct fictional loss rate (duct sizing by duct dimensions method)
- duct sizer for different duct materials
- duct converter (round, rectangular, oval)
- built-in tools for louvre sizer, duct gauge browser, duct velocity guide, pyschrometric air properties calculator, fan motor kW.
- in SI & IP units

- Staircase Pressurisation to Singapore Standard SS CP 13 (in-line with Australia Standard AS 1668.1).
- Door-opening force calculation to ASHRAE guideline.
- Differential Pressurisation, Airflow & Leakage Area calculations for room pressurisation conditions.
- Louvre sizing.
- in SI units.

- light-weight, mobile and super easy tool for Air Testing And Balancing (AirTAB) at job site
- measure, calculate and record at job site
- no guessing, arbitrarily, or trial and error
- save hundreds of man-hour in air balancing
- specially designed to assist commissioning engineers and contractors in air TAB