Recommended Watt Densities For Various Liquids

Material
 
Max.Operating Temperature
°C
Max.Watt Density
W/cm²
Mineral Oil 93.33 3.1
  204.44 2.48
Molasses 37.78 0.62-0.775
Molten Salt Bath 427-482 3.875-4.65
Molten Tin 315.56 3.1
Oakite (See Alkaline Solns.) - -
Oil Draw Bath 315.56 3.1
204.44 3.72
Oils (See Type of Oil) - 0.42
Paraffin or Wax 65.56 2.48
Percholr-Ethylene 93.33 3.1
Potassium Hydroxide 71.11 3.875
Propylene Glycol 65.56 3.1
Sodium Cyanide 60.00 6.2
Sodium Hydride 382.22 4.34
Steel Tubing Cast into Aluminium 260-399 7.75
Steel Tubing Cast into Iron 399-538 8.5
Socony Vaccum Type Transfer Iron 315.56 3.1
Sulphur Molten 315.56 1.55
Therminols and Heat Transfer Oils 260.00 3.1
315.56 3.1
343.33 3.875
Trichlorethylene 65.56 3.1
Vapor Degreasing solutions 135.00 3.1
Vegetable Oil and Shortening 204.44 4.656.2 circ.
in Liquid state Below 100F 2.35-3.787non-circ.
Water (Process) 1.67-66
100.00
0.775
15.5-19.375 circ.
11.625-15.5 non circ.
11.625 circ.
77.5-non-circ.
Steam 148.89
260.00
371.11
low flow vol.1.55
high flow vol.3.875-4.65
low flow. 775-1.55
high flow. 3.1-3.875
low flow. 775-1.55
high flow 2.35-3.1
Note: Watt densities will vary with flow rates, densities and temperature.
Apply these values with caution in some applications.

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