Hotohms™Silicon Nitride Ceramic Heater Device for Water Heater
Silicon Nitride Ceramic Heating Element is consist of the silicon nitride ceramic as carrier and tungsten filament as heating supply. The Si3N4 ceramic heating element is shaped by dry pressing and cold isostatic pressing, sintered by vacuum hot-pressing sintering, finished by series of mechanical grinding machines, then an uniform and compact ceramic is produced.
Characteristics:
-It have the absolutely electrical insulator and high efficiency heat transfer medium which can be directly contact with liquid such as water, resulting absolutely safe;
-The high heating efficiency, anti-scale, excellent thermostability, excellent acid and alkali corrosion resistance ;
-The-long working life, eco-friendly and energy saving. If it is broken in the water, the water is also absolutely safe.
Applications:
household;commercial and industrial applications; instant water heater; direct liquid heater, fast electric faucet; steam foot bath product; thermostatic water bath; steamed rice production and so on.
Technical Data:
Rated Voltage
|
110V,220V
|
Volume Density
|
≥3.2g/cm3
|
Hardness
|
HRA90-92
|
Bending Strength
|
800—1200Mpa (Room Temp.)
|
Heat Conductivity
|
23-25W/(m-k)
|
Volume Resistivity at Room Temperature
|
1014Ω.cm
|
Working Life
|
5000—10000 hours
|
Rated Power
|
1000W—3000W (single piece)
|
Tolerance of Rated Power
|
+ 5%;-10%
|
High Electric Insulation Strength
|
2500V, 50Hz at room temperature, no breakdown for 1 minute
|
Leakage Current
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<0.5mA under normal operating condition;
<10mA in liquid after broken
|
Acid Corrosion Resistance
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5% H2So4 solution for 6h,
the corrosion rate < 10 g/m2.h
|
Alkali Corrosion Resistance
|
30% NaOH solution for 6h,
the corrosion rate < 0.6 g/m2.h
|