An investigation of the heat transfer behavior of longitudinal finned membrane water wall tubes in circulating fluidized bed boilers

Chinsuwan, Anusorn; Dutta, Animesh

doi:10.1016/j.powtec.2009.03.023

Cited by 19 publications

(6 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Again the studies of heat transfer in the riser regions of this type of reactor are abundant as demonstrated by Anderson (1996), Luan et al (2000), Pagliuso et al (2000), Eriksson and Golriz (2005), Dutta (2009a and2009b), for example.…”

Section: Introductionmentioning

confidence: 88%

Study on Heat Transfer from a Bubbling Fluidized Bed Combustor to a Membrane Wall

Neto¹,

Ribeiro²,

Pinho³

2012

International Journal of Chemical Reactor Engineering

View full text Add to dashboard Cite

The importance of projection and splashing of bubbling bed particles on the heat transfer rate towards a membrane wall heat exchanger placed above the bed was studied.To characterize the heat transferred from a bubbling fluidized bed to a membrane wall heat exchanger placed above the freeboard, a laboratory scale fluidized bed reactor, heated by a 2 kW electric resistance, was used. The reactor, with an internal diameter of 54.5 mm, had two 0.83 m height double pipe heat exchangers placed one above the other. Only the heat exchanger close to the bed surface participated in the heat exchange process. Tests were done without and with combustion.For experiments without combustion the bed was fluidized with air at superficial velocities of 0.2 to 0.5 m/s in the 400-700 • C temperature range. For experiments with combustion, the fluidizing gas was obtained through propane combustion in the bed in 700-720 • C temperature range, for superficial velocities of 0.2 to 0.3 m/s. Five different bed particle sizes were considered: 107.5, 142.5, 180, 282.5 and 357.5 µm.Particle convective heat transfer coefficients were obtained in the range of 2 to 16 W/m 2 /K and a correlation for the corresponding Nusselt number as a function of the fluidization characteristics and the combustion equivalence ratio is proposed.For the three smaller bed particle sizes, the particle entrainment ratio had a strong influence on the heat transferred towards the membrane wall and the corresponding bed particle entrainment rate was determined and correlated with the fluidization characteristics and the combustion equivalence ratio.

show abstract

Section: Introductionmentioning

confidence: 88%

Study on Heat Transfer from a Bubbling Fluidized Bed Combustor to a Membrane Wall

Neto¹,

Ribeiro²,

Pinho³

2012

International Journal of Chemical Reactor Engineering

View full text Add to dashboard Cite

show abstract

“…Euler -Euler Method allows to trace gas-dynamic process in the furnaces of CFB boilers, but does not allow to consider the movement of individual particles of the fuel [7,8]. Lagrange-Euler approach allows to investigate a large number of individual dispersed particles, but not quite correctly reflected the processes in the lower furnace with circulating fluidized bed [9,10].…”

Section: Mathematical Modelmentioning

confidence: 99%

The Study of Dynamic Processes in the Boiler Furnace with Circulating Fluidized Bed

Gil

Baturin

2016

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. The paper presents a numerical simulation of the furnace with a circulating fluidized bed. Numerical study carried out on all volume of the combustion chamber. The results contours of particulate matter concentration and of velocities, as well as a graphical representation of changes in the concentration of particles on the bed height are shown. Simulation performed in Eulerian -Eulerian and Lagrange representation on a 3D model.

show abstract

“…The pertinent data for the core heat transfer are available in Table 3 [39][40][41][42][43]. The operating parameters affecting the heat transfer process in CFBC with immersed surface can be summarized as: superficial gas velocity [31,33,39,[44][45][46][47], bed particles inventory [44], bed cross section [44], bed temperature [33,47], biomass share [48], suspension density [31,33,39,45,47], particle size [31,33,46,47], solid concentration [39,44,45,47,49], and immersed surface configuration [50].…”

Section: Heat Transfer Process In Circulating Fluidized Bed Combustormentioning

confidence: 99%

Heat transfer process in gas–solid fluidized bed combustors: A review

Abdelmotalib

Youssef

Ali

et al. 2015

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

An investigation of the heat transfer behavior of longitudinal finned membrane water wall tubes in circulating fluidized bed boilers

Cited by 19 publications

References 18 publications

Study on Heat Transfer from a Bubbling Fluidized Bed Combustor to a Membrane Wall

Study on Heat Transfer from a Bubbling Fluidized Bed Combustor to a Membrane Wall

The Study of Dynamic Processes in the Boiler Furnace with Circulating Fluidized Bed

Heat transfer process in gas–solid fluidized bed combustors: A review

Contact Info

Product

Resources

About