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& Cooling Coils
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Heating & Cooling Calculators Material Selection Request for Quote


Heating Coil Calculator - Welcome to MBA's Exclusive Coil Calculator... now finding the right coil for your application is easy.

What is your application?
Heat tank using hot water

Heat tank using steam

Your tank dimensions in inches:

Length Width Depth

Operating conditions of your tank:

Starting temperature of the tank (normally 70F) Help

Operating temperature of the tank. Help

Heat-up time in Hours. Using a heat-up time of more than 3 hours will lead to smaller, less costly coils. Help


Coil source temperature (water or steam). You may select the pressure of steam in PSI and leave the temperature box blank. Help

Source Temp.
-or- PSI steam

If the tank operating temperature is 160F or more, select the surface ventilation over the tank (if you don't know, select "1"). Help

Surface Ventilation (feet/sec.)

 Select the solution in your tank (select "Other" if it is not in this list):

See Important Material Disclaimer

Is the solution in your tank agitated?
No Yes

This calculator will help you find the size of coil you will need as well as the material best suited for your coil (see material selection chart and disclaimer. This unique calculator can be used for heating-as well as for cooling applications. After finding the coil that fits your tank, request a quote from MBA with a touch of a button!

Here are some tips on entering information into the calculator:

Tips On Entering Information Into The Coil Calculator

  • Starting temp. of tank = the temperature of fluid in your tank before it is heated.
  • Operating temp. of tank = the desired temperature of your tank for regular operation. Consult MBA if your tank operates above 180�F or if the difference between your operating temperature and the temperature of your supply fluid or steam in your coil will be less than 15�F.
  • Coil source temp. = the temperature of fluid or steam that will be used in the coil to heat the tank.If steam is used in the coil and you know the pressure of steam in PSI, you may select the steam PSI instead of entering a temperature. In that case, leave the source temperature box empty.

Heat-up time - Number or hours it takes to get your tank from the Starting temperature to the Operating temperature. You may enter fractions of an hour also (example: 1.5 hours).  The size of a coil is often determined by the time required to raise the solution to operating temperature. In general, the more time you allow, the smaller the  coil. Short heat-up times require large coils.

Saturated steam in PSI - The temperature of saturated steam is proportional to it's pressure in PSI. The coil calculator automatically converts the steam PSI to the appropriate temperature value. If you select a steam PSI value you must leave the source temperature box empty. Here's a guide for relating steam pressure in PSI to temperature:

PSI Temp, F   PSI Temp, F   PSI Temp,F
0 212 12 244 65 312
1 216 15 250 70 316
2 219 20 259 75 320
3 222 25 267 80 324
4 224 30 274 85 328
5 227 35 281 90 331
6 230 40 287 95 335
7 232 45 292 100 338
8 235 50 298
9 237 55 303
10 240 60 307

Air ventilation over tank - As you increase the operating temperature of the tank, surface heat losses become significant, especially when there is air passing over the tank surface. The Coil calculator compensates for this surface loss for temperatures of 160F and above. If you don't know the air velocity over your tank, select "1 foot/second".

Selecting tank solution - Your coil material is determined by the type of solution to which your coil will be exposed. It is extremely important to choose your tank solution properly. If your tank solution is not on the list, please select "Other" from the list. If you are using a proprietary solution in your tank, please consult your chemical supplier for proper choice of coil material.

Material Disclaimer - Material suggested on this web site provide general guidelines only. In view of the ever increasing amounts of proprietary chemical solutions being offered by chemical suppliers, we suggest that you contact your chemical supplier and
follow their recommendation in selecting the most suitable material for your
specific application.

Tank agitation - Agitating the solution in your tank improves heat transfer properties and might lead to smaller coils. Agitation also enhances the corrosion resistance of metal. For special applications, MBA offers SX-2 Coils with built-in Airspargers.