Visual experimental study on the effect of heat exchange area on the evolution of biomass pyrolysis vapors in a vertical indirect condensing field

2022 ◽  
pp. 126686
Author(s):  
Chu Wang ◽  
Runtao Wang ◽  
Tao Chen ◽  
Xifeng Zhu
1986 ◽  
Vol 51 (6) ◽  
pp. 1259-1267
Author(s):  
Josef Horák ◽  
Petr Beránek

A simulation apparatus for the experimental study of the methods of control of batch reactors is devised. In this apparatus, the production of heat by an exothermic reaction is replaced by electric heating controlled by a computer in a closed loop; the reactor is cooled with an external cooler whose dynamic properties can be varied while keeping the heat exchange area constant. The effect of the cooler geometry on its dynamic properties is investigated and the effect of the cooler inertia on the stability and safety of the on-off temperature control in the unstable pseudostationary state is examined.


2020 ◽  
Vol 1700 ◽  
pp. 012005
Author(s):  
Mujiyono ◽  
D Nurhadiyanto ◽  
H Pratiwi ◽  
GD Pratama ◽  
P Priyono ◽  
...  

1974 ◽  
Vol 96 (3) ◽  
pp. 279-285 ◽  
Author(s):  
F. K. Moore ◽  
T. Hsieh

A procedure is outlined to meet simultaneous requirements to reduce overall size of a dry cooling tower for a large power plant, and to reduce the size (surface area) of the associated air-water heat exchanger. First, tower exit dimensions (or fan power) are specified as attainable fractions of their theoretical minima as found from a draft equation. Then a heat-exchanger type is chosen, having as small an air hydraulic diameter as feasible. Appropriate equations and assumptions dealing with air side and water side heat exchange and water pumping power then yield a full description of tower and heat-exchanger characteristics for a given tower duty. A specific example is worked out and compared with the tower at Rugeley, England. We find that a very open heat exchanger, of shallow depth (one in or less) results from our analysis, and in a proposed configuration of acceptable header loss gives a 1/3 height reduction and a four-fold reduction of heat-exchanger area.


1987 ◽  
Vol 53 (3) ◽  
pp. 987-990 ◽  
Author(s):  
Yu. F. Gortyshov ◽  
G. B. Murav'ev ◽  
I. N. Nadyrov

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