放射効果によるボイラ効率向上の評価

抄録

Necessity for effective utilization of the energy, especially heat becomes high recently. The process of the heat exchange is important to heat utilization facility such as a boiler and a waste heat recovery facility, and improvement of the heat exchange performance influences efficiency improvement of equipment directly. A lot of the ceramic materials such as the silicon carbide (SiC) have high emissivity. And radiative effect by the ceramics material can expect improvement of heat transfer performance by installing the ceramics material inside a boiler or a heat exchanger. In this study we verified the performance improvement of a boiler by radiation of silicon carbide. At first we estimated radiative effect using CFD analysis and predicted boiler efficiency improvement about a 45t/h steam boiler. Moreover, we proved radiative effect using a small through flow boiler and estimated the reliability, the durability and the cost performance.