scholarly journals Evaluation of heat exchanger and turbine materials for use in a coal fired fluidized bed combustion environment. Task II. Monthly technical report, November 1978

1978 ◽  
Author(s):  
J. Clark
1979 ◽  
Author(s):  
G. Miller ◽  
V. Zakkay ◽  
S. Rosen

The efficient extraction of a high-temperature working fluid from a coal-fired fluidized bed combustor depends, to a great extent, on the design of the immersed heat exchanger. Of special importance is the solidity of the cooling tubes immersed in the bed. The interaction between increasing solidity and the consequent degradation of proper fluidization and circulation is being studied at the New York University fluidized bed combustion facility. It is found that under certain conditions, the solidity of heat exchanger in the bed can be significantly increased and thus one can extract increased mass flows of clean working fluid. In addition, a variation in local solidity may be another mechanism for improving performance.


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