Application Solution for Nuclear Power Plant Steam Piping: Aerogel

In nuclear power plant systems, steam pipes serve as critical components tasked with the core mission of transporting high-temperature, high-pressure steam. Their thermal insulation performance directly impacts the plant's energy efficiency, operational safety, and economic viability.

Currently, traditional insulation materials such as aluminosilicate wool felt are widely used in nuclear power plant steam pipes. However, these materials suffer from numerous drawbacks, including high density, suboptimal thermal efficiency, high water absorption rates, and short service life, making them difficult to meet the stringent standards for high efficiency and energy conservation demanded by nuclear power plants.

Typical Steam Conditions for Nuclear Power Plants (Using AP1000 as an Example)

Main Steam Parameters (Typical)

Temperature: 270–273°C

Pressure: ≈5.6 MPa

Main Steam Pipe Outer Diameter: φ720–750 mm

Surface Design Temperature: ≈250–270°C

Ambient Temperature: 20°C, no wind.

Comparison of Aerogel and Traditional Insulation Materials 

Traditional Aluminosilicate Insulation: Composed of 120mm (2x60mm) aluminosilicate wool felt + aluminum foil reflective membrane + metal outer cladding;

Aerogel insulation blanket: 45mm thick aerogel + aluminum foil reflective membrane + metal outer cladding;

Nano-porous insulation blanket: 75mm thick nano-porous material + aluminum foil reflective membrane + metal outer cladding;

Removable aerogel insulation sleeve: 65mm thick aerogel insulation layer;

Based on the comprehensive analysis of the above data, aerogel insulation materials demonstrate significant advantages over traditional insulation materials in steam pipeline insulation applications within nuclear power plants.

While meeting identical heat loss limit requirements, the aerogel insulation solution not only achieves thinner insulation layers—effectively reducing pipeline space requirements—but also delivers higher energy efficiency.

From a full lifecycle perspective, aerogel's outstanding energy-saving performance delivers substantial operational cost savings and carbon emission reduction benefits.

In summary, aerogel insulation materials align exceptionally well with the stringent operational standards of nuclear power plants. They hold immense potential for promotion and application in steam pipeline insulation, providing robust support for achieving energy conservation, consumption reduction, quality enhancement, and efficiency gains in nuclear power facilities.