Cartridge Heater Watt Calculation

Thus for a 1 2 x 12 heater rated 1 000 watts the watt density calculation would be as follows.

Cartridge heater watt calculation.

Suppose you wanted to calculate the radiation loss. For example a 1 2 x 12 cir heater rated 1000 watts has a watt density of 55 w in2. Kw w x c x t w weight of material in lbs. Kw scfm x delta t 3000 x 1 2 this formula can be used for standard air.

For calcualation purposes stock cartridge heaters have a 1 4 unheated length at each end. Heaters should always be sized for a higher value than the calculated figure. Watt density w π x d x hl. It is the number of watts per square inch of heated surface area.

In order to determine whether a particular heater will perform well in your application you must compare its wattage with your requirements. Cartridge heaters electric insertion heaters immersion heaters square metric imperial cartridge heaters technology for industry toll free. Thus for a 1 2 x 12 heater rated 1000 watts the watt density calculation would be as follows. Kw wt x cp x δ t 3412 x h where.

The size of the safety factor is dependent on the accuracy of the wattage calculation. So the formula for calculating heat loss due to radiation is. Watt density w p x d x hl. Are you looking to calculate surface heater wattage.

Heat calculations watt density for cartridge heaters other heater applications. How to calculate required wattage. The first thing to know is how many pounds of air need to be heated. Follow the formula in this video given by chet omega engineer to understand exactly the type of surfac.

You can use the following formula to determine your required wattage. Kw your kilowatt requirement. A factor of 10 is adequate for small systems that are closely calculated. Calculate watt density and fit after the wattage for each heater has been established the watt density and fit must be calculated.

20 additional wattage is more common. Standard air is 70 degf 14 psi scfm stands for standard cubic feet per minute and delta t exit temperature minus inlet temperature in degrees fahrenheit. For calculation purposes cir stock cartridge heaters have 1 4 unheated length at each end.