![]() ![]() Inlet and outlet conditions temperature.Heater duty to be absorbed by the heater.The reason for this is that it is normally lower cost to fabricate as much as possible in the shop while minimizing the field work to assemble final unit.īasic data needed for heater design: The minimum amount of data needed to create a heater design would be as follows: Mind during the design, how best to split the pieces for shipment. For larger furnaces, it is important to always keep in ![]() Small, say less than 40 MM Btu/hr, then the design should be something that can clear in one piece for cylindrical radiant section or one or two vertical pieces for a horizontal tube design. Shipping sizes and considerations: No matter what the heater configuration or overall size of the heater, it is important to know the method that will be used and the shipping piece size that can be cleared. If the plot area is very small,įrequently this leads the designer to select a vertical cylindrical heater design since the area required is much smaller, than an equivalent horizontal tube heater. We will assume that for this discussion that the heater design will need to meet API 560 and API 530 standards.įor this first example of selecting a heater design, we will assume the heater is a small unit of the type used in the Petro‐Chemical industry.Ĭonsiderations of plot area: The area available to place the new unit is one of the first items to be considered, and often leads to the determination of the heater configuration selected. The guidelines and procedures included herein are appropriate for a typical direct fired heater of the types found in refineries and gas plants, and is not expected to include specialty heaters or furnaces that include reaction in the tubes due Guidelines for Vertical Cylindrical Fired Heater Design ![]()
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