HDO-P Flat Plate Low Voltage High Temperature Electric Heater
This heater can provide radiant heating to workpieces. The low voltage ensures safety and it has a long working life. It is suitable for preheating before welding and post-weld stress relief of rotating workpieces or other workpieces. The maximum temperature of the heating surface can reach 900°C.
HDO-P Flat Plate Low Voltage High Temperature Electric Heater Model Dimensions (mm) Working Voltage (V) Rated Power (KW)
HDO-5.5P 620×390×70 36 5.5
HDO-6P 460×250×70 24 6
HDO-6P 540×250×70 24 6
HDO-9P 630×250×70 36 9
HDO-9P 590×320×70 36 9
HDO-11P 990×390×70 60 11
HDO-14P 930×320×70 60 14
HDO-14P 760×390×70 60 14
HDO-P Flat Plate Low Voltage High Temperature Electric Heater
Our company manufactures various types of heat treatment equipment. The main products include far-infrared heaters, electrode ovens, automatic flux ovens, and various electric heating baking and constant temperature equipment, automatic temperature control equipment, laboratory furnaces, industrial kilns, welding auxiliary equipment, etc.
HDO-P Flat Plate Low Voltage High Temperature Electric Heater
An electric heater refers to an electrical appliance that uses electrical energy to achieve a heating effect. It is small in size, has high heating power, and is widely used. It adopts intelligent control mode with high temperature control accuracy and can be connected to a computer network. It has a wide range of applications, long life, and high reliability. The core of the heater principle is energy conversion, and the most widespread is the conversion of electrical energy into heat energy.
Heaters are common electric heating devices. People are increasingly dependent on them.
For example, electric heaters, use the eddy current generated by metal in an alternating magnetic field to heat itself and absorb it, which is the conversion of electrical energy into light energy; for example, solar water heaters absorb solar radiation heat energy and solar light energy (photoelectric effect) and convert them into heat energy, combining both; bioenergy is a form of energy that uses organisms as carriers to store solar energy in the form of chemical energy, directly or indirectly derived from plant photosynthesis. In addition, there are other energy conversion modes such as nuclear energy and wind energy, but they generally need to be converted into electrical energy for use.
Electric heating is the process of converting electrical energy into heat energy. Since the discovery that electric current can produce thermal effects through wires, many inventors in the world have been engaged in the research and manufacture of various electric heating appliances. The development and popularization of electric heating, like other industries, follows this pattern: gradually spreading from advanced countries to countries around the world; from cities gradually developing to rural areas; from collective use to household use, and then to individual use; products from low-end to high-end. In the nineteenth century, electric heating appliances in the embryonic stage were mostly crude. The earliest electric heating appliances appeared for daily life. In 1893, the prototype of the electric iron first appeared and was used in the United States. Then in 1909, the use of electric stoves appeared, where electric heaters were placed in the stove, meaning heating shifted from firewood to electricity, that is, from electrical energy to heat energy. However, the rapid development of the electric heating appliance industry came after the invention of nickel-chromium alloy used as heating elements. In 1910, the United States first successfully developed an electric iron with nickel-chromium alloy heating wire, which fundamentally improved the structure of the iron and quickly popularized its use. By 1925, products with electric heating elements installed in pots in Japan became the prototype of modern rice cookers. During this period, electric heating products such as laboratory electric furnaces, glue melting furnaces, and heaters also appeared in industry. From 1910 to 1925 was a major development period in the history of electric heating appliances. In both household and industrial aspects, the emergence and widespread application of various types of electric heating appliances developed rapidly, especially in households. Therefore, the invention of nickel-chromium alloy laid the foundation for the development of the electric heating appliance industry.
After the 1920s, there were not as many new application developments as in the previous period, but during this stage, all kinds of electric heating appliances were redesigned and continuously improved, becoming a period of improvement in the history of electric heating appliances. In household electric heating appliances, various devices were designed to be more beautiful, durable, and sturdy, and most had automatic temperature and time control.
1. Power: W, Kw 1Kw=3.412BTU/hr British thermal units/hour=1.36 (horsepower)=864Kcal/hr
2. Weight: kg : 1Kg=2.204621b (pounds)
3. Flow rate: m/min
4. Flow volume: m3/min, kg/h
5. Specific heat: Kcal/(kg℃): 1Kcal/(Kg℃)=1BTU/hr.°F=4186.8J/(Kg℃)
6. Power density: W/cm2: 1W/cm2=6.4516 W/in2
7. Pressure: Mpa
8. Thermal conductivity: W/(m℃): 1 W/(m℃)=0.01J/(cm s℃)=0.578Btu/(ft.h.F)
9. Temperature: ℃: 1F=9/5℃+32 1R=9/5℃+491.67 1K=1℃+273.15
The calculation of heating power includes the following three aspects:
Power during operation
Power during startup
Heat loss in the system
All calculations should consider the worst-case conditions:
Lowest ambient temperature
Shortest operating cycle
Highest operating temperature
Maximum weight of the heating medium (for flowing media, the maximum flow rate)
Steps to calculate the heater power:
According to the process, draw the heating process flow chart (not involving material forms and specifications).
Calculate the heat required for the process.
Calculate the heat and time required for system startup.
Redraw the heating process flow chart, consider an appropriate safety factor, and determine the total power of the heater.
Determine the sheath material and power density of the heating element.
Determine the form, size, and quantity of the heater.
Determine the power supply and control system of the heater.
