DIANREZHANELECTRIC HEATINGKnowledge中文
INDUSTRIAL HEATING KNOWLEDGE
Straight answers,before you buy.
No brochure language here — just the questions that decide real projects: why thermal oil cokes, how to size duct heaters, how Ex classes actually match, where installations go wrong. Read one, then check your own project against it.
K10How should a duct heater interlock with the fan?Four duct-heater interlock rules, the airflow and temperature rise power formula, inlet-side probe errors, and why an independent high-limit trip is needed.Duct heaterK11How to pick the temperature class for an Ex heater?T1 to T6 surface limits, why peak temperature includes fault conditions, the margin needed for control swing and probe placement, and four installation checks on flame paths and glands.Ex heaterK12Why is my heater underperforming when the calculation was fine?Four causes behind low output: supply voltage, insulation loss, flow off the design point and fouling or a dead bank — plus the U² power relation and a four-step site test.Heater sizingK13Electric heaters for paint curing and powder coating ovensWhat you actually heat, not what the fan movesDuct heaterK14Electric heating for lithium-ion electrode coating linesZone-by-zone air duty and dew-point limitsDuct heaterK15Electric thermal oil heaters for presses, platens and rollsFlow per circuit, ΔT across the plate, film temperatureThermal oil heaterK16Electric heating for bitumen and asphalt storage tanksViscous product, low watt density, melt-through startImmersion heaterK17Electric heaters for nitrogen and other inert gasesMass flow, cp, and the low-heat-capacity trapPipeline heaterK18Immersion heaters for hydraulic oil reservoirsWarm start, low watt density, no over-temperatureImmersion heaterK19Electric heating for CIP wash water and clean tanksDuty cycles, chemistry, and the dry-fire windowImmersion heaterK20Electric reheat for cleanroom and pharmaceutical AHUsSmall ΔT, tight tolerance, no condensation riskDuct heaterK21Electric or gas heating for an industrial drying line?Permits, turndown, footprint and the real energy billSizing