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             PDrop Pressure Calculation Software

The Fastest and Easiest Way to Calculate Pressure Drops in HVAC Systems!

Most HVAC ductwork and piping systems are sized using duct-u-lators and pipe sizing tables respectively.  Its done this way by thousands of engineers and contractors for one simple reason - its the fastest method.   However, after sizing the systems, an accurate pressure drop must be calculated to size the fan or pump.  A mistake can cause costly change orders.

P-DROP quickly and easily calculates air pressure drop in duct systems that have been sized using a duct-u-lator. The software also calculates water pressure drop for systems sized by charts.

These pressure drops can be used to select fans and pumps more accurately.

P-DROP was developed by Design and Consulting Engineers for use by Engineers, Contractors, and Architects.  The program has been used daily by engineers on thousands of actual projects all over the United States, the Middle East, Australia, and other countries.

FEATURES

• Calculates Air Pressure Drop in Supply, Return, and Exhaust Ductwork systems.

• Calculates allowable duct clearances and prints detail

• Calculates Pump Head Pressure for Open or Closed Systems.

• Reduce Design Errors.

• Reduces design time.

• Easy to Learn Spreadsheet Type Interface.

• Saves calculations in project friendly format.

• Prints out all calculations for great-looking documentation

Quality control will be improved in the design of all projects since the program helps users not to "forget" important pressure losses in duct and piping systems.

Ductwork Pressure Drop                      Fan Demo

P-DROP allows you to quickly calculate air pressure drops for any fan, AHU, DX, FCU and other HVAC or fan system.  Simply size the ductwork using your duct-u-lator as you always have.  Then select the most critical leg of the system. It only takes 2 minutes to enter the information into the P-Drop program for each fan system.

You may customize the calculations based upon average friction drop and average velocity used to size the system.  Standard loss coefficients for each type of device is included, but you may customize as you wish.

Piping System Pressure Drop         Pump Demo

P-DROP also uses a simplified approach to calculate the head pressure drop in the most critical leg of a piping system that has been sized using a pipe sizing chart or tool.

But P-DROP takes 1/10 the time to estimate pressure drop when compared to other computer programs.     The input only takes a couple of minutes instead of hours required by the Trane, ELITE, and Carrier programs.

Never underestimate pump head again! P-DROP's simplified method has been used by Consulting Engineers for years to quickly and accurately calculate head loss without entering a lot of data.

Using the P-DROP method will reduce design time and make sure fans and pumps are sized correctly.

PROJECT FRIENDLY.  The program helps document design calculations and allows you to save design data for multiple projects.  This helps organize all fans and pump calculation for a job in one file so changes can be made in seconds.

Bonus Feature - Ceiling Clearance Calculator

Do you know how Architects never want to give you enough ceiling clearance?  One of the most critical calculations needed at the beginning of every job is to calculate how much space is needed for ducts and piping.   P-Drop not only calculates the maximum duct depth with existing structures, but the printout can be faxed to an architect so they understand ceiling space requirements graphically for new buildings.  This lets even junior engineers get it right without forgetting things like structure, lights, fire protection, and duct insulation.  

Minimum System Requirements:

• Windows 2000, Xp

• 15 MB HD

• 256k Memory