✦ LIBER ✦

Local instantaneous temperature and time-averaged heat transfer coefficient in the bottom zone of a circulating fluidized bed

✍ Scribed by Hong-Shun Li; Yi-Jun Wang; Jin-Guo Yang

Publisher: John Wiley and Sons
Year: 2004
Tongue: English
Weight: 274 KB
Volume: 28
Category: Article
ISSN: 0363-907X
DOI: 10.1002/er.975

No coin nor oath required. For personal study only.

✦ Synopsis

Local instantaneous temperature signal and time-averaged heat transfer coefficient were measured using a miniature heat transfer probe. The experiments were carried out in the bottom zone of a 5.8 m high, 0.3 m Â 0.5 m rectangular cross-section circulating fluidized bed. The results show that the heat transfer coefficient was higher near the walls, and became lower near the central region, and that the heat transfer coefficient decreases with increment of the air velocity due to the associated reduction of solids holdup in the bottom zone. In addition, the power spectrum density functions of the local instantaneous temperature signal can be characterized by the 1/f-like distribution.

📜 SIMILAR VOLUMES

Method of calculation of heat transfer c

Method of calculation of heat transfer coefficient of the heater in a circulating fluidized bed furnace

✍ J.F. Lu; J.S. Zhang; G.X. Yue; Q. Liu; L. Yu; X.D. Lin; W.J. Li; Y. Tang; T.Y. L 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 365 KB

## Abstract Knowledge of heat transfer coefficients is important in the design and operation of CFB boilers. It is the key to determining the area and the layout of the heat transfer surfaces in a CFB furnace. Local bulk density has a close relationship to the local heat transfer coefficient. Using

Effect of pressure and temperature on cl

Effect of pressure and temperature on cluster and particle heat transfer in a pressurized circulating fluidized bed

✍ B. V. Reddy; P. Basu 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 134 KB 👁 1 views

Heat Transfer in the Downer and the Rise

Heat Transfer in the Downer and the Riser of a Circulating Fluidized Bed – A Comparative Study

✍ Y. L. Ma; J.-X. Zhu 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 276 KB 👁 2 views

The characteristics of heat transfer were studied in both a gas-solids concurrent downflow fluidized bed (downer) and a gassolids concurrent upflow fluidized bed (riser) with FCC particles. The radial and axial distribution profiles of the heat transfer coefficient between a suspended surface and th

An experimental and theoretical investig

An experimental and theoretical investigation into the heat transfer of a finned water wall tube in a circulating fluidized bed boiler

✍ Prabir Basu; Leming Cheng 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 245 KB 👁 2 views

Heat transfer improvement in a water wall tube with "ns was investigated in a circulating #uidized bed (CFB) boiler. Experiments were "rst conducted in a 6 MWth CFB boiler then a model was developed to analyse and interpolate the results. Temperatures at some discrete points within the wall cross-se