HRY14 Immersion Electric Heater Working Pressure
Darui Electric recommends
SRY2-3 (HRYl4) tubular electric heater is improved based on SRY2 ordinary tubular electric heater, with upgraded wiring device and heating structure. It uses three heating tubes as a group, effectively reducing the surface load of the heater and can directly replace SRY2-SRY4 heaters.
This electric heater is constructed by welding bent tubular elements onto a flange. Since the heater is directly placed in oil for heating, it has high thermal efficiency and long service life.
Main technical parameters, specifications, length:
Rated voltage: Single-phase 220V, Three-phase 380V
Working medium: Mineral oil, water, and other media with good heat dissipation
Surface heating power: 1KW～4KW 1.5w/cm2, 5KW～8KW 2.5w/cm2
Working pressure: 0.6Mpa
Instructions:
1) The working voltage must not exceed 1.1 times its rated value, and the shell should be effectively grounded.
2) Dimension "B" in the figure must be fully immersed in oil (and checked regularly) to avoid burning. The heated oil should be free of corrosive gases.
3) The mounting hole size of this electric heater is φ65mm.
4) This model heater is designed according to JB2379-78 flowing oil standard, with a surface load of 2-3.8w/cm2.
5) When selecting, determine the heater size based on the actual size of the heating medium.
Note: This heater can be directly mixed with SRY2 and SRY4 types.
Power calculation
1. Calculate the power required to heat from the initial temperature to the set temperature within the specified time.
2. Calculate the power required to maintain the medium temperature under the premise of constant medium temperature.
3. Based on the above two calculation results, select the model and quantity of the heater. The total power takes the maximum of the 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 mass of medium added per hour (kg/h)
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
