The calculation formula of heater power

The calculation of the power of the heater can be easily carried out in the following three steps through standardized and unified calculation:

1. Calculate the actual power required to maintain the temperature under the premise of maintaining the medium temperature unchanged

2. Calculate the power required to heat from the initial temperature to the set temperature within the specified time

3. According to the above two calculation results, select the type and number of heaters. The total power is the best value of the above two kinds of power and the 1.2 coefficient is considered.

1. Maintain the power required for medium-temperature pumping

KW=C2M3△T/864+P

Where: M3 added media kg/h per hour

2. Power required for initial heating

KW = ( C1M1△T + C2M2△T )÷ 864/P + P/2

Where: C1C2 is the specific heat of the container and the medium (Kcal/Kg℃), respectively.

M1M2 is the mass of the container and the medium, respectively (Kg)

T is the difference between the required temperature and the initial temperature (° C)

H is the time required to heat the initial temperature to the set temperature (h)

P Heat dissipation of the container at final temperature (Kw)

A performance curve is often used in heater calculations.