I. 200KW Vertical Air Electric Heater Technical Parameters:
1. Heating Temperature: Heat to 100°C
2. Power: 200KW
3. Working Pressure: 0.7MPa
II. Overview of 200KW Vertical Air Electric Heater:
The air electric heater is mainly used to heat the required air flow from the initial temperature to the required air temperature. It has been widely used in many scientific research and production laboratories such as aerospace, weapon industry, chemical industry, and higher education institutions. It is particularly suitable for automatic temperature control and high-flow high-temperature combined systems and accessory tests. The air electric heater has a wide range of applications: it can heat any gas, producing hot air that is dry, non-conductive, non-combustible, non-explosive, non-corrosive, non-polluting, safe and reliable, and the heated space heats up quickly (controllable).
III. Technical Features of 200KW Vertical Air Electric Heater
1. It can heat air to a very high temperature, up to 850°C, while the shell temperature is only about 50°C.
2. High efficiency: up to 0.9 or more.
3. Fast heating and cooling rates, up to 10°C/s, with fast and stable adjustment. There will be no lead or lag in the controlled air temperature, causing temperature control drift, making it very suitable for automatic control.
4. Good mechanical performance: because its heating element is made of special alloy material, under the impact of high-pressure air flow, its mechanical performance and strength are better than any other heating element, which is more advantageous for systems and accessory tests that require continuous air heating for a long time.
5. Durable and long-lasting, with a service life of up to ten years when used in accordance with operating procedures.
6. Clean air and small size.
7. Multiple types of air electric heaters can be designed according to user needs.
IV. Overview of 200KW Vertical Air Electric Heater Control System:
1. Overview of Intelligent Fully Automatic Control System:
The electric heating intelligent fully automatic control cabinet is a dedicated temperature control device designed for our company's various electric heating equipment to form an electric heating system. It integrates main circuit protection, temperature measurement and control, and control of flow, pressure, working current, voltage, system pump, etc., into a unit combination equipment.
The temperature control system in the electric heating system is an extremely important part.
2. Operating Conditions for Intelligent Fully Automatic Control System:
(1) Ambient Temperature: -15°C~40°C
(2) Relative Humidity: ≤95%
(3) Installation Location: Non-explosion-proof area, non-corrosive, indoor installation
(4) Protection Level: IP55 (outdoor type), IP23 (indoor type)
(5) Altitude: Above sea level
(6) Power Supply: 400-230V 50Hz
3. Structural Features of Intelligent Fully Automatic Control System:
The control cabinet is available in two types: wall-mounted and floor-standing. The floor-standing type can be made with front door or front and rear doors according to user requirements. The control cabinet can be divided into outdoor or indoor types based on installation location. One cabinet can be combined with multiple electric control units to measure and control multiple sets of electric heating equipment.
4. Performance Features of Intelligent Fully Automatic Control System:
(1) The main circuit of the control cabinet uses an automatic air switch for short circuit, overload, and heating element power-off protection.
(2) The control cabinet can achieve electrical interlock with relevant liquid level controllers or oil pump control devices.
(3) It has an over-temperature alarm system independent of temperature control. When the temperature inside the heater exceeds the set value, it will irreversibly shut down the electric heater and output a contact signal.
(4) It can provide several interlock interfaces (analog, digital) with DCS.
(5) It has manual/automatic bumpless switching function.
(6) It achieves fully automatic monitoring.
5. Working Principle of Intelligent Fully Automatic Control System:
The fully automatic intelligent control system integrates the latest technologies in comprehensive disciplines such as heat transfer, chemical engineering, thermal power engineering, thermal structure engineering, electrical engineering, instrumentation, automatic control engineering, mechanical engineering, and computer software and hardware engineering. It is a high-tech product combining multiple disciplines under the guidance of our company's long-term commitment to research and development in the field of electric heating equipment and practical experience in electric heating process detection, control, optimization, and scale-up. It has the following features:
l Can accurately detect and control the heating temperature, pressure*, and flow* of the medium simultaneously;
l Has the ability to automatically control important parameters such as temperature, pressure, and motor soft start*;
l Has temperature detection*, pressure detection*, flow detection*, current and voltage detection*, medium liquid level height*, and insulation resistance detection*;
l Can set upper and lower limits for temperature, pressure*, flow*, and has over-limit alarm function;
l All alarm events can be recorded and reviewed;
l Has alarm and automatic shutdown functions for over-temperature, low flow, three-phase resistance imbalance, leakage, etc.;
l Temperature, pressure, current, voltage, flow, etc., can be set to automatic, manual, or off status;
l Medium temperature, pressure, current, voltage, and other parameters can be automatically tracked and controlled according to the set curve;
l Each parameter has a PID adjustment process display, such as set value, real-time value, PID set value, upper and lower limit values, curve tracking display, manual/automatic switching, online setting, etc.; all set parameters can be restored as before when power is restored after a power outage;
l Historical data and curves of various parameters can be saved for many years (requires an upper computer); important parameters are synchronously written to the database for data analysis at any time;*
l User-friendly interface, can switch between more than ten monitoring screens;
l The system has multiple associated controls: associated control of temperature and power, associated control of system pump and flow, associated control of current, voltage, and electric heater, etc.; l The system has functions such as real-time display of operation process, data recording, data analysis (histogram, curve chart, and batch report), output printing, password management, abnormal analysis, and alarm, all in Chinese interface, with detailed help instructions. The recording screen can simultaneously display 8 different curves in different colors, and more curves can be displayed in sequence if needed;
l Remote monitoring of the electric heater's operating status via LAN or Internet*;
l Parameters of each detection and control loop can be manually set and corrected online on the screen; temperature, power, and temperature sensor calibration can be performed; calibration of each pump flow; operation has multi-level password protection, assigning different operation permissions;
l Automatically records the electric heater's start time, stop time, number of power outages during automatic operation, power outage time, power restoration time, etc.;
l The software system has adaptive and self-diagnostic capabilities; abnormal situations can automatically alarm and perform protection operations according to customer settings;
l On-site large LED display for important parameters*; displays temperature and pressure - eye-catching, important parameters at a glance.
Note: The above is a basic functional description, which can meet the requirements of most electric heating processes. Items marked with * are expandable functions for high-end users.
