Heat Exchangers
Fuel Oil Preheaters
Heat Recovery Heat Exchangers
Packaged Heat Transfer Systems
Liquid/Vapor Separators
Replacement Tube Bundles

• Bonnet head type “A” is the most economical.
• Head type “B” permits removal of the tube bundle from the shell without dismounting the head piping.
• Head type “D” provides a more economical solution for this problem but is restricted to small nozzle diameters.
• Channel head “C” permits the checking and plugging of leaking tubes without dismounting the head.

Fuel Oil Preheaters

Fuel Oil Heaters serve two major purposes:

• to make fuel oil "pumpable"
• to provide the requested atomization in the burner.

Fuel oil has a high viscosity and when stored at the ambient temperature cannot be pumped. The first step is to preheat the fuel oil inside the storage tank, reduce its viscosity , and then dispense it by means of pump suction.

Alstrom "HST," "ST," "HDT," and "DT" fuel oil heaters are designed for this purpose.

Heat Recovery Heat Exchangers

Heat Recovery Shell & Tube Heat Exchangers recover and utilize the heat, from liquid and gas streams, which is normally wasted.

Generally in the boiler industry, boiler water blowdown is used to maintain the accumulated chemical concentration levels recommended by the boiler manufacturer. The wasted heat is transferred to the make up water in our ABD heat exchanger. Depending on steam consumption, the ratio of the blowdown water to the make up water volume flow rate is 0.02-0.20. The best heat transfer occurs when the blowdown water passes through the multiple passes of tubing and the make up water flows through the shell

Alstrom heat exchangers ATC provides the countercurrent heat transfer for the crossing temperatures common in heat recovery installations. Depending on the temperatures and flow rates of the hot and cold streams, multiple shell heat exchanger AMS may be required.

Packaged Heat Transfer Systems

Customarily, the control devices, pumps, and other accessories that make up heat exchanger packages are installed at the job site. This increases the man-hours required for on-site field work and limits assembly quality to the installer's level of qualification.

Alstrom Packaged Units, which include our high quality heat exchangers, are conveniently packaged and only require connection to the service. All components are sized, mounted, and piped prior to shipment, with the exception of certain items (e.g., thermometers and pressure gauges) which can be damaged during shipping. Each package is designed, manufactured, and hydrostatically tested in our facilities. All components are supplied by the most reliable and well-respected manufacturers in the United States.

Alstrom pre-engineered packaged units save on installation time and guarantee qualified factory assembly. While manufactured from a similar design concept, each unit is customized according to the client's specific needs and performance requirements.