Formulas & Quick Estimates

Heat Calculations Equations - Equations for heat-up and operating requirements with additional considerations for heat loss and other factors

Heat Calculation Examples - Examples of applications utilizing the heat calculation equations and charts.

Room Heating Examples with Heat Losses - Room heating calculations with factors for construction, outdoor temperatures, and other variables considered

Watt Density Equations - Equations for calculating values for heater watt density utilizing heater surface area and heater wattage.

Watt Density Examples - Examples of examples utilizing the watt density equations with actual products

Ohms Law- Common equations derived from Ohms Law stating the relationship between Current, Voltage, and Resistance

Quick Estimates:

Wattage Required To Heat Air Flows - Wattage required to heat air at various CFM flows and temperature rises

Wattage Required To Heat Water In An Insulated Tank - Wattage required to heat water in a tank based on known gallons or cubic feet with a target temperature increase in degrees F.

Wattage Required To Heat Flowing Water - Wattage required to heat flowing water based on known gallons per minute flow rate or cubic feet per minute with a target temperature increase in degrees F.

Wattage Required To Heat Oil In An Insulated Tank - Wattage required to heat oil in a tank based on known gallons or cubic feet with a target temperature increase in degrees F.

Wattage Required To Heat Flowing Oil - Wattage required to heat flowing oil based on known gallons per minute flow rate or cubic feet per minute with a target temperature increase in degrees F.

Wattage Required To Heat A Room - Wattage required to heat a room based on known cubic feet (Length x Width x Height of room). Four heating curves are provided based on thermal conditions such as insulation and related construction.

Wattage Output At Operating Voltages Other Than Rated - Charts compare output wattage when units are operated at input voltages other than actual rating

Amperage For Wattage and Voltage Combinations - Resulting amperage values for several wattage and voltage combinations including single phase and 3 phase circuits

Surface Area (FT2) for Cylindrical Tanks - Surface area of tanks ranging in diameters from 2 feet to 50 feet and wall tank height from 1/2 foot to 50 feet