The first step in sizing your hot water generator is to know how much hot water you need.  Our hot water generators are based from our standard tank designs in both vertical and horizontal configurations, bare, jacketed and insulated or topcoated.  Click here to see our tank sizes.  

To assist you in selecting the correct tube bundle for your application, please complete the following information and return
it to our office at info@nilesst.com. We will calculate the bundle based on the information you provide.

Heat Load – ________Btu (Boiler output)

Tube Side:

Fluid – water/steam

Inlet temperature ____˚F

Outlet temperature ____˚F

Flow Rate __________ fpm

Tank Side:

Tank fluid – water/steam

Inlet temperature ____˚F

Outlet temperature ____˚F

Recovery Rate _______ gph

heat exchanger 014

Niles Steel Tank offers both single wall and double wall heat exchangers.  Please let us know which you need when submitting your request for bundle sizing.  The drawings below are for general layout purposes.  Actual submittal drawings can be provided once we know the scope of your project.  Please use the diamensions below as an aid in the building layout.


Bare Vertical

Vertical Tanks


Tank Diameter Coil Diameter
Dimension B
  Dimensions
8″ 10″ 12″ 14″ C D
30 21 22 n/a n/a 1712 4734
36 2338 2438 n/a n/a 19 5334
42 2378 2478 2578 2612 2012 5934
48 2578 2678 2778 2812 22 6534

Bare Horizontal.1


Horizontal Tanks

Tank Diameter Coil DiameterDimension B   Dimensions
8″ 10″ 12″ 14″ C D
30 1812 1934 2138 n/a 39 1734
36 1918 2012 2178 2312 45 1734
42 1934 21 2212 24 51 1734
48 2038 2158 2318 2658 57 1734

NOTES:

1.  Standard materials for potable tank water include copper tubes, 316L stainless steel tube sheets, and spacers and cast iron heads.

2.  For construction materials other than standard, consult factory.

3.  An additional tube sheet present in double wall units is not shown in these layouts

4.  Dimensions shown represent 125 PSI standard tank construction. For additional dimensional information, consult the factory.

5.  Clearance should be provided at installation to permit coil removal and access to the manway if required.