TANK HEATING

There are several methods available for tank heating. Each has advantages depending on the application. Some processes, such as cleaning solutions, should not be directly heated through the base. Over time there will be a build up of sludge which will reduce the efficiency. Immersion tube heating is the most efficient method but may not suit some procedures. If under firing, always aim to heat the sides as well as the base. The most common burners are the atmospheric type for smaller or lower production tank or process heating. Forced air burners are used for high heat recovery, large capacity or high production rate tanks or processes. For detailed information on Tank Heat Burners please look here.

IMMERSION TUBE HEATING

imtube.jpg (10039 bytes) This is the most efficient method of tank heating; usually approx. 3-4 times the efficiency of under firing.

BOTTOM FIRING

The atmospheric type burners heat the tank through the base only. This is the least efficient and an input rate of approx. 20,000 BTU/Square foot of base surface area should not be exceeded. The flue area should be approx. 3,000 BTU/Square inch. Secondary air should be provided for the burner to complete combustion at the rate of approx. 2 times the flue area.

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UNDER FIRING

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This is the better way of underfired tank heating.
The sides as well as the base are heated, increasing the efficiency. Note the positioning of the flue pipe and the size of the gap to allow the heat to accomplish maximum transfer. The outer skin should always be insulated.
The maximum input rate should not exceed 8,000 BTU/Square foot and the flue  area is about 1 square inch per 5,000 BTU.
Make certain adequate secondary air is provided around the burners.

TANK HEATING BURNERS

The following burners are suitable for all liquid type heating tanks. These are most frequently used for food processing or cleaning solutions. We have many other burners in our range to cater for special applications or where high input rates are required.

IMMERSION TUBE BURNERS

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A tube usually from 50mm to 250mm in diameter is fitted inside the tank generally in a "U" formation at the base.

A torch type burner for smaller tubes or a special pressurised burner for larger tanks is fired into the tube efficiently transferring heat to the product.

SLOTTED TUBE BURNERS

These stainless steel tube type burners have replaced the drilled port pipe burners in most cases. High gas input rates are possible on very low gas pressures. The slotted burners are very popular on fat fryers, steamers and cookers.

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RING TYPE BURNERS

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There are several ring type burners that are suitable for underfired tank heating from approx. 10 MJ/hour to 250 MJ/hour. The illustrated Hiheat burner supplies from 80 - 250 MJ in a ring shape and operate on low pressure natural gas or L.P.Gas. The S5 has a maximum capacity of 250 MJ/Hr and operates on high pressure gas only. All burners can include a variety of options including flame safety and temperature control.

FORCED AIR BURNERS

Models are available to create high velocity or swirling gas streams
depending on the process requirements.

All forced air burners require automatic safety controls.

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Please e-mail Australian Combustion Services Pty Ltd for more detail.

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