Parallel connection.
1. Parallel connection is literally understood as a parallel connection, there are more than two resistors, one end of them is connected together, the other end is also connected together, the two nodes are applied voltage, forming a branch circuit, which is called parallel circuit.
2. It cannot be connected in series. If connected in series, the supply voltage will be 760V for the sum of the voltages of the two heating tubes.
3. Star connection method and triangular connection method cannot be used. The number of heating tubes for star connection and triangular connection must be a multiple of 3.
4. If it is a three-phase power supply, one end can be separated and connected to phase A. The other two ends can be connected to the B and C phases.
Electric heating tube principle: the use of resistance wire inside the electric heating tube to heat.
An electric heating tube is a kind of consumption of electrical energy converted into heat energy to heat the material to be heated. In the work, the low-temperature fluid medium enters its input port under pressure through the pipe, and follows the specific heat exchange flow channel inside the electrically heated vessel, using the principle of fluid thermodynamics to design the path.
Take away the high-temperature thermal energy generated in the work of the electric heating element, so that the temperature of the heated medium rises, and the outlet of the electric heating tube obtains the high-temperature medium required by the process.
