PM^{EQUIPMENT CO.}

14525 Ravenna Road   *  Newbury , Ohio 44065

Phone# (440) 564-2219  *  Fax# (440) 564-9896

Website:  www.pmequipment.com *  Email:  sales@pmequipment.com

Formulas & Rules of Thumb

Here are some useful links to some formulas or rules of thumb.  If you have other questions please contact us and we can help you.

• Useful Formulas
  • Conversion Factors
  • Expansion of pipes in inches per 100 ft.
  • Degrees Centigrade to Degrees Fahrenheit
  • Properties of Saturated Steam
  • Water Pressure Conversion
  • Water Pressure Conversion 2
  • Basic Heating Data
  • Application Formulas
  • DC and AC Power Circuits
  • Average System Water Content
  • Sizing The Compression Tank

   

• Rules of Thumb
  • BTU and EDR
  • Longest "Safe" Length of Continuous Baseboard Loop
  • Converting Gravity Hot Water Heating to Forced Circulation
  • Hydraulics Formulas: where
  • How to Size a Low-Pressure (15 psig max.) Condensate Pump
  • Heating Formulas
  • GPM & Head Formulas
  • To Calculate the Required Flow Rate in GPM
  • Maximum, Trouble-Free, Design Flow Rates for Hot Water Heating
  • How to Determine the Pump Head (Based on the maximum flow through the system)
  • BTU Content of Various Fuels
  • Calculating the size of Tanks

The information above is for reference only.  We recommend contacting our office if you have questions on any applications.

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Last modified: June 19, 2008