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Industrial Insulation in Iran: Climate, Heat Loss & Savings

Updated 12 June 2026 · ASTM C680 / ISO 12241 at Iran's real plant-site climate (WorldClim) · by the Inzonex engineering team

Direct answer: at Iran's industrial sites the annual-mean ambient is 17.4 °C (winter 5.2 °C, summer 28.9 °C — averaged from WorldClim at the coordinates of 177 actual plants). At that ambient, a bare 350 °C surface loses ≈10,899 W/m² — and ~2% more in winter. Removable insulation cuts it by ~98% with a touch-safe outer surface.

Heat loss at Iran's ambient — bare vs insulated

Surface T	Bare @ 17.4 °C	Bare @ winter 5.2 °C	Insulated	Outer surface	Reduction
150 °C	2,603 W/m²	2,780 W/m²	140 W/m²	27 °C	94.6%
250 °C	5,861 W/m²	6,038 W/m²	155 W/m²	28 °C	97.4%
350 °C	10,899 W/m²	11,076 W/m²	260 W/m²	35 °C	97.6%

Computed for Iran's plant-site climate. Colder ambient = bigger bare losses = faster insulation payback; design cases use the winter column.

Iran's industrial base (open data)

177 power plants (121 gas, 19 hydro, 18 oil, 8 solar; ≈109,918 MW total) and 137 industrial facilities (refineries, chemicals, steel, cement, food). CO₂ measurements available for selected plants. Explore them all on the PowerAtlas — Iran.

Largest plants	Capacity	Fuel
Iran-Hormoz nuclear power plant	5,000 MW	Nuclear
Damavand C.C.	2,800 MW	Gas
Mobarakeh Steel power station	2,732 MW	Gas
Shahid Rajaee	2,040 MW	Gas
Karoune 3	2,000 MW	Hydro

What to insulate first

The order is the same everywhere — what changes in Iran is the size of the prize (ambient 17.4 °C): start with the bare, maintenance-access parts that fixed lagging leaves open — valves, flanges, steam headers, expansion joints, pump casings and boiler doors — with removable insulation jackets. Then run the numbers for your own site in the whole-plant study.

Calculate your plant in Iran →Industrial insulation guide →Inzonex modular insulation →

FAQ

What ambient temperature should insulation be designed for in Iran?

At Iran's power and industrial sites the annual mean is about 17.4 °C, with winter months averaging 5.2 °C and summer 28.9 °C (WorldClim at the actual plant coordinates). Design heat-loss cases use the winter figure — bare-surface losses are ~2% higher in winter than at the annual mean.

How much heat does bare equipment lose in Iran?

At the 17.4 °C annual-mean ambient: a bare 250 °C surface loses ≈5,861 W/m² and a 350 °C surface ≈10,899 W/m² (ASTM C680). Removable insulation cuts these by ~98% and keeps the outer surface touch-safe.

How big is Iran's industrial base for insulation?

Our open data covers 177 power plants in Iran (121 gas, 19 hydro, 18 oil, 8 solar; ≈109,918 MW total) plus 137 industrial facilities. Each thermal plant carries hundreds of insulatable components — valves, flanges, headers, joints.