The calculation method of electric heater power varies according to specific circumstances. Here are some common calculation methods: Method 1: Calculate the power required to heat from the initial temperature to the set temperature within the specified time:

C1 and C2 are the specific heat of the vessel and the medium (Kcal / Kg ℃) respectively; M1 and M2 are the mass (Kg) of the vessel and the medium; (℃) how the electric heater calculates the difference between the required temperature and the initial temperature; H is the time (h) required to set the initial temperature; P is the heat dissipation (Kw) of the vessel at the final temperature.

Calculate the power to maintain the temperature of the medium:

Where M3 is the increased hourly medium mass (kg / h).

The total power takes the maximum value of the above two powers,and considers a certain coefficient (e. g.,1.2).

Method 2: In the case that the thermal efficiency of the electric heating is similar to 1,the power of the electric heater can be considered as the heat generation value.

Power selection considers the following points:

From the initial state,realize the heating medium to the set temperature (operating temperature).

Under working conditions,the heat value is sufficient to maintain the medium temperature.

There should be a certain safety margin,generally take 1.25.

That is,the larger part of the power obtained from points 1 and 2 is selected and multiplied by the safety margin to obtain the appropriate power.

The specific formula is as follows:

Where P is the power required by the electric heater,C is the specific heat of the heated medium,M is the mass of the heated medium,how does the electric heater calculate power how the electric heater calculates the difference between the set temperature and the initial temperature,and t is the time specified from the initial temperature heating medium to the set temperature.

Flow-through fluid heating:

Among them,F is the heating medium flow rate (generally taking the maximum flow rate),and M increase is the increased medium mass per hour.

For example,the heating medium is known to be water with a flow of 2 cubic meters per hour,the temperature is heated from 20 degrees to 80 degrees,and the specific heat of water is 1kcal / kg ℃.

The power is calculated as follows:

In practical application,a certain margin needs to be considered,which can be appropriately multiplied by the coefficient (such as 1.2). At the same time,in order to accurately calculate the power of the electric heater,it is necessary to understand the specific heating conditions in detail,including the type of medium,initial temperature,setting temperature,heating time,container characteristics,environmental conditions and other factors. If complex systems or special requirements are involved,more specialized engineering calculations or reference to related standards may be required.

In addition,if the resistance value and rated voltage of the electric heating pipe are known,its power can be calculated by the formula power voltage voltage resistance. However,it should be noted that this formula is only applicable to the already made electric heating pipe.