Many friends ask how to design the power of the electric heating tube? The following is a brief explanation from the perspective of personal work experience:
1. The design calculation of the heating pipe is generally carried out in the following three steps:
1. Calculate the power required to heat from the initial temperature to the set temperature within a specified time
2. Calculate the actual power required to maintain the temperature under the premise of maintaining the temperature of the medium unchanged
3. According to the above two calculation results, select the heater model and quantity. The total power takes the maximum value of the above two powers and considers a factor of 1.2.
Heating pipe
2. Formula:
1. 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℃)
M1M2 are the mass of the container and the medium (Kg)
△T is the difference between the required temperature and the initial temperature (℃)
H is the time required for the initial temperature to heat to the set temperature (h)
P The heat dissipation of the container at the final temperature (Kw)
2. The power required to maintain the temperature of the medium
KW=C2M3△T/864+P
In the formula: the medium kg/h increased by M3 per hour
3. Heating pipe environmental performance curve