What is the purpose of insulation.
Storage tank insulation calculation.
5 oc to 55 oc is the range between max and min ambient temperatures ever.
Td td tt 2 6 d h 1 st td miniumum shell thickness in inches.
This is why storage tank insulation is so important for both hot and cold storage as it directly affects the stability of the products inside.
D normal tank diameter in feet.
We pay special attention to the type of products being stored and utilize the most appropriate and cost effective materials.
Insulation systems can be individually engineered to conform to your specific storage applications.
The insulation is calcium silicate with a 2 5 thickness.
Ca corrosion allowance.
The tank construction is cyllindrical 14 id 24 ht carbon steel construction with 0 5 thickness.
The product is 50 naoh so the idea is to use an electrical heater external to the tank to maintain product temp 80 100f to prevent it from freezing in the winter months.
Above k factor information used to calculate heat losses comes from letco incorporated catalog.
Since this is a sprayed foam product the properties can vary slightly from one tank to the next.
Required heat for maintaining above tank.
G design specific gravity of liquid.
Sd allowable stress for design condition.
The polyurethane closed cell insulation on our tanks has an r value between 6 0 and 6 5 per inch of thickness.
Insulation materials temperature ranges.
Insulation will delay cooling but will not reduce heat loss to zero.
Oil tanks heat loss.
Td 2 6 d h 1 g sd.
H depth of tank in feet.
Watts loss from insulated surface.
Heat loss from lagged and unlagged sheltered and exposed oil tanks.
If you want to also calculate the freeboard space at the top of the tank so the water level never touches the top then use this optional field remember that 4 inches would be calculated using 3 in.
E joint efficiency.
Is it a floating roof tank as expected or a cone roof tank.
With a 2 layer the r value is between 12 0 and 13 0.
The tank capacity calculator below allows you to type in your desired tank diameter and height and provides an estimated volume by gallon amount.
Calculation form to determine watts required to replace heat losses from an insulated surface complete the fields below.
Can we say that a minimum storage temperature of 38 oc is adequate for all crudes stored.
Heat loss w ft diagrams for insulated pipes ranging 1 2 6 inches insulation thickness 0 5 4 inches temperature difference 50 350 deg f.
