1. Calculate the power required to heat from the initial temperature to the set temperature within the specified time
2. Calculate the power actually required to maintain the medium temperature unchanged
3. Based on the above two calculation results, select the model and quantity of the heater. The total power takes the maximum of the above two powers and considers a factor of 1.2.
Formula:
1. Power required for initial heating KW = ( C1M1T + C2M2T ) ÷ 864/P + P/2
Where: C1C2 are the specific heat of the container and medium respectively (Kcal/Kg℃)
M1M2 are the mass of the container and medium respectively (Kg)
T is the difference between the required temperature and the initial temperature (℃)
H is the time required to heat from the initial temperature to the set temperature (h)
P is the heat dissipation of the container at the final temperature (Kw)
2. Power required to maintain the medium temperature KW = C2M3T/864 + P
Where: M3 is the medium added per hour kg/h
