Thanks to the development of new sealing technology, the regeneration type radianttube nozzle can be used in the vacuum furnace to achieve uniform heating result.
新型密封技术的开发，使蓄热式辐射管烧嘴得以应用在真空炉上，并获得了均匀的加热效果。
2
Two methods for radiation heat trnasfer in radianttubefurnace, the equivalent grey planes method and the imaginary planes method are introduced and compared with real conditions.