Insulation Material Calculation for Pipe

 Insulation Material Calculation

Problem : How to Calculate Insulation Material & Cladding quantity for Pipe?

Solution: 

We have required following details:

1. Pipe Size

2. Pipe Length

3. Fittings quantities (like Valve, Flange, Elbow, Tee, Reducer, Cap etc.)

4. Insulation Thickness

Now we put these value in below formula:

RMT = Pipe Length + (Fittings quantities X Conventional Equivalent Lengths of fittings as per pipe size)

Note: Conventional Equivalent Lengths of fittings have selected from below Table.

Table

 Now you found insulation running meter (RMT) from above formula.

Convert RMT to Area from below formula:

Area = Pie X (Pipe outer diameter + 2 X Insulation thickness) X RMT

Note: All above value put in same measurement unit like (mm, cm, m).

Now we found cladding quantity:-

formula:

Cladding Quantity = Area X Cladding material weight X Safety Factor.

Note: Cladding material weight is same square measurement unit of area. for example you consider insulation area in m2 then cladding weight must in m2/kg.

Now we understand above theory in numerical concept.

Question: A 8" (OD-219.1mm) pipe having length is 100m including 2valves, 1flange, 2 elbow 45° & 1 elbow 90° & insulation thickness is 50mm. Cladding material is 24G plain aluminum sheet. Calculate area of insulation & quantity of cladding?

Answer: 

We Know about RMT formula, we put all values in Formula:

RMT = Pipe Length + (Fittings quantities X Conventional Equivalent Lengths of fittings as per pipe size)

RMT = 100 + (2X2.4 + 1X1.5 + 2X0.85 +1X1.4) 

(Pink color value consider from table)

= 100 + 9.4

RMT = 109.4 M

Now we calculate Area of insulation.

Area = Pie X (Pipe outer diameter + 2 X Insulation thickness) X RMT

Area = 3.142 X ((219.1 + 2 X 50)/1000) X 109.4

(we convert mm to m, hence we divide from 1000)

= 3.142 X 0.3191 X 109.4

=109.68 M2

Now we calculate Cladding Quantity.

Cladding Quantity = Area X Cladding material weight X Safety Factor.

Cladding Quantity = 109.68 X 1.52 X 1.1

(We consider 10% safety factor & weight is vary as per Cladding materials & gauge) 

Cladding Quantity =183.38kg.

Finally we get result that total insulation area is 109.68 M2 & Cladding Quantity is 183.38kg.

Reference for download IS 14164 Standard 

http://www.shristyenterprises.com/images/Standard/Standard%20-%20In%20Profile%20Page.pdf