Air Cooled Steel Finned Tube Bundle Heat Exchanger for boilers
Air heat exchangeris a kind of heat exchanger that is used to cool
or heat forcibly flowing air with water, glycol solution, steam or
heat conduction oil as the medium.Different models of heat exchanger should be selected according to
the actual working conditions.
Air heat exchanger can be divided into air heater and air cooler.
Air heater has several forms including electric heating, steam
heating, and oil heating etc.
Air cooling machine, with the environment air as the cooling
medium, is the equipment to cool or condensate the process fluid
with high temperature in the tube. It is called “air cooler” for
short, and is also called “air cooling heat exchanger”. Air cooler
can be also called as fin blower that is often used to replace the
cooling medium of water-cooling shell-tube heat exchanger.
——Before designing this kind of equipment, it is necessary to know
the nature of the gases to be cooled and their dust content.
——The purpose of all that is to design an equipment free of important
fouling which would force to make cleaning works more frequently
——We must have in mind as well the availability to detach the dust
from the gaseous stream containing it in all those areas where
there is a bend or some enlarging in the pass section, which forces
to include in the design some systems for dust collection and
removal, to allow the correct heat exchange.
——Kind of fluid.
——Maintenance and cleaning works.
——Connection of the equipment with the rest of the plant.
——Depending on the above mentioned factors, different technical
solutions may be applied which will go
through the adoption of an arrangement:
——Modular (with only one or many fans).
One or more steps.
When the designer's choice is the multi-cyclone collector,or the
electrostatic precipitator,or a different type constructed of
metals or ther low temperature materials,it becomes necessary to
add a gas-cooling device.This is done to assure that he entering
flue gases are with in the temperature range of 600 to 700F,with no
possibility of even flashes of higher temperatures.
The exit temperature depends upon the materials used downstream
from the cooling chamber.Since , however , experience and
economical evaluations justifying the use of the high temperature
alloys are not generally available this paper is based upon the
exit temperatures stated above.
The two agents commonly used as cooling materials are air and
water.Both have advantages and disadvantages.Generally,a
combination of the two is found most acceptable.However,they must
first be considered separately,so that the characteristics of each
may be properly evaluated.
HD Boiler established in 1985, Zhangjiagang Hua Dong Boiler Co.,
Ltd. (trading as HD Boiler), is a professional industrial
manufacturer, producing utility boiler,industrial boiler,HRSG
boiler and all kinds of boiler parts, such as waterwall panels,
economizers, air preheaters, superheaters, headers, spiral fin
tubes, H-fin tubes, heat pipes etc. HD Boiler is located in Dong
Lai Industrial Park, east suburb of Zhang Jia Gang City. The
plant’s location is around 150km Expressway to Shanghai Port or
60km State Road to Suzhou or Wuxi, with transportation extending in
all directions conveniently and quickly.