Liquid Immersion Heaters and Heating Elements

Tubular elements are commonly used in immersion applications because they are comparatively inexpensive to manufacture as compared with other heating systems - hence their appeal in domestic, industrial and commercial applications. They are available in a variety of tube materials, diameters with a host of fittings. This information and technical data can be found on the Tubular Elements page in this on-line catalogue.

HOTCO has worked with the Australian Aquaculture Industry to accomplish an end design that has proven to be both versatile and dependable. With thanks to the Industry we have worked with in design development, we now have a very successful, purpose built element available.

These hanging 'Over the Side' type elements offer excellent versatility. One element can be moved from one tank to another - or multiple heaters can double as 'boosters' for a faster heat up time.

The design has a 'hanging depth' (Total Length) of 1000mm. The hot zone area (Heated Length) occupies less than 300mm at the bottom (this area must be covered by water at all times). Hence, the element has a 700mm cold zone from the hanging bend down to the hot zone. The thermostat is fully adjustable.

SHEATH MATERIAL	POWER RATING	CONTROL	APPLICATION
0.420ø Titanium	3.6kW 240V 15amp	0-40° C Thermostat	Salt Water
0.420ø Titanium	2.4kW 240V 10amp	0-40° C Thermostat	Salt Water
0.420ø Titanium	2.0kW 240V 8.3amp	0-40° C Thermostat	Salt Water
0.420ø Incoloy800	3.6kW 240V 15amp	0-40° C Thermostat	Fresh Water
0.420ø Incoloy800	2.4kW 240V 10amp	0-40° C Thermostat	Fresh Water
0.420ø Incoloy800	2.0kW 240V 8.3amp	0-40° C Thermostat	Fresh Water

For Aquaculture applications requiring other heating systems OR variations on the above criteria, please contact HOTCO.

The food industry often has a requirement for sterilising equipment. In our modern age of environmental awareness, the output of water wastage via giant boilers has become a real issue. However, by far the biggest issue faced by today's food processing is hygiene. Bacteria are of course the primary concern - and the safest way to kill bacteria is to apply more heat to it than it can withstand.

MEAT INDUSTRY - HOTCO has a stock range of 'Knife Sterilisers' designed to operate in small knife holders, which are regulated at a pre-set temperature. There are 2 main designs for this specific application.

ORDER CODE	DESCRIPTION
TM29617	Knife Steriliser 92°C, Overside, 240V 2400W, 1m lead & Plug
TM29804	Knife Steriliser 90° C, 1.5"BSP Stainless Steel Screw In boss, 240V 750W, 1m lead & Plug

OTHER FOOD INDUSTRY - Heating elements and indeed heating systems can be specifically designed to cater to the needs of each customer. Please contact HOTCO via the Feedback Page or e-mail us now with your requirements.

HOTCO carry a full range of Drum heaters including direct immersion heaters specifically designed for standard size storage drums.

For further data on these heaters and other drum heaters, please click on this Drum Heating link to view the Process Heating Page on-line.

This is the mother of immersion heaters. Flanged elements are capable of heating massive volumes with high power input. They can be mounted in still vessels or be manufactured as a part of an in-line circulation system (pictured)

Moving liquids are pumped through the 'inlet' valve and then pass over the massed heater bundle inside. From there the liquids pass back into the process via the 'outlet' valve.

Systems range from small 5kW to a mammoth 400kW and can have single or multiple chambers (as shown). They can be mounted vertically or horizontally - manufactured to heat oils, waters, chemicals and gasses.

Please contact HOTCO via the Feedback Page or by e-mail regarding this product.

Over the side immersion heaters as their name describes, simply - they hang over the side edge of a tank or vessel. They are available in many different sizes with various tube sheath materials and extras. The hot zone or heated length is required to be immersed in liquid at all times when the heater is operational. The cold zone is advantageous in tanks that may not hold full fluid levels or suffer a high rate of evaporation.

Standard designs (below) are readily available however HOTCO manufactures many unique designs according to the requirements of our clients. These needs may relate to heat up times, the caustic nature of liquids or even a necessity for complete electronic, precise control.

A very small sample of the HOTCO 'standard' Over-Side Immersion Heaters are listed in the table below. Should you require a variation on these, please e-mail us with your specifications.

ORDER CODE	WATTS @ 240 Volts	SHEATH MATERIAL	TOTAL LENGTH	HEATED LENGTH	HAIRPIN WIDTH
LOTX20I40N	2000	INC 800	670 mm	470 mm	70 mm
LOTX30I40N	3000	INC 800	910 mm	710 mm	70 mm
LOTX40I40N	4000	INC 800	1150 mm	950 mm	70 mm
LOTX50I40N	5000	INC 800	1390 mm	1190 mm	70 mm
LOTX20S40N	2000	316 SS	670 mm	470 mm	70 mm
LOTX30S40N	3000	316 SS	910 mm	710 mm	70 mm
LOTX40S40N	4000	316 SS	1150 mm	950 mm	70 mm
LOTX50S40N	5000	316 SS	1390 mm	1190 mm	70 mm
LOTX20T40N	2000	TITANIUM	670 mm	470 mm	70 mm
LOTX30T40N	3000	TITANIUM	910 mm	710 mm	70 mm
LOTX40T40N	4000	TITANIUM	1150 mm	950 mm	70 mm
LOTX PC61	2000	LEAD	760 mm	500 mm	160mm
LOTX PC62	2500	LEAD	760 mm	530 mm	160 mm
LOTX PC71	3000	LEAD	870 mm	640 mm	160 mm
LOTX PC 81	4000	LEAD	1000 mm	770 mm	160 mm
LOTX PC91	5000	LEAD	1300 mm	1070 mm	160 mm

Note: Please specify if a fitted Thermostat is required and what temperature range you need.

At times it isn't convenient to fit a direct immersion element into a tank. This may be due to the substance being heated or even perhaps the tank can't be drained easily to fit, clean or replace tubular style heaters.

The solution would be an element which can radiate heat in a metal sleeve or pocket (steel, brass, copper). These are commonly used in Bitumen tanks and also in highly aggressive solutions and acids.