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Heat exchanger insulation | Paroc Applications
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 Heat exchanger insulation

Reduce thermal loss for an optimal insulation

The purpose of industrial heat exchangers is to enable the exchange of thermal energy, that would otherwise be lost. For example, the energy recovered in the form of heat can be fed back into the production process. This allows enormous savings in the consumption of primary energy, a reduction in CO2 emissions and therefore savings in the costs of heating and production processes.

The construction of these process systems usually requires different insulation and cladding options depending on the size and operating temperatures. The proper insulation can be crucial to the optimum performance and longevity of the system and helps to maintain an effective process temperature.

Heat exchanger insulation, image

Benefits of heat exchange insulation

Complete insulation system for indoor and outdoor applications

With PAROC® Clad system, we offer a water-proof product line consisting of pipe sections, elbow solutions, lamella mats and accessories. The Clad facing is water resistant (according to PN-EN 1928:2002 method B), UV resistant (when installed with Paroc® Clad Alu tape), resistant to salt water, high puncture resistance (tested according to EN 14477) and resistant against hail storms class HW3.

Due to its special facing, PAROC® Clad system eliminates the need for additional cladding or prefabrication resulting in savings on costs and installation time and enabling an easy installation even under high wind loads.

High flexibility and strength

Our PAROC® Pro Slabs (WR), Wired Mats (WR) and Mats (WR) have been specially developed to meet these challenging demands and offer optimum insulation properties even in the event of major temperature fluctuations due to stone wool’s high flexibility and mechanical strength.

Please consult the respective product data sheet for more information.

For high temperatures

Our products can provide long-lasting performance also at high temperatures and are resistant even at service temperatures of up to 700 °C, ensuring smooth operation.

Please consult the respective product data sheet for more information.

Prevent thermal bridges and heat loss in the process industry

PAROC recommends the use of stone wool Pro Slabs (WR) or Pro (Wired) Mats (WR), which comply with the specified geometries and dimensions for heat exchangers and represent the ideal solution.

PAROC® Pro Wired Mats (WR) are an ideal solution for smaller diameter exchangers, while for larger heat exchangers, stone wool Pro Slabs (WR) with different densities can be used depending on the required temperatures. Please consult the respective product data sheet for more information.

Our stone wool insulation solutions are specifically designed to prevent thermal bridges and heat loss in the process industry. In addition, we provide water-repellent (WR) products, including wired mats, mats, and slabs, all of which have excellent properties such as very low water absorption. Our goal is to reduce the risk of corrosion, ultimately lowering maintenance needs and extending the service life of the equipment. All our products for the insulation of heat exchangers are available as WR (water-repellent) products. Since their average water absorption is 10 times lower than the toughest known standard (EN1607), they provide excellent protection to minimize the risk of CUI (corrosion under insulation).

Correct fixation is crucial

At the joints, the mesh of the wired mats should be sewn or stitched together with a recommended pitch less than 100 mm, and additionally the insulation should be secured with steel bands.


For high operating temperatures

For heat exchangers with maximum operating temperatures above 250 oC, we recommend the use of a double-layer insulation solution with wired mats with a nominal density of 100 kg/m³ (PAROC® Pro Wired Mat WR 680).

Wired mats, 3D image

Flexible & energy efficient

With their curves and outlets, heat exchangers are often best fitted with a flexible insulation material such as our PAROC® Pro (Wired) Mats (WR). Because of their flexibility, they are ideal for appliances with irregular surfaces and ensure that all corners are adequately filled without creating air gaps.

When using flexible wired mats, it is usually necessary to secure the cladding with structures such as support rings to carry the weight of the cladding.

Based on our certifications to ISO 14025, ISO 21930 and EN 15804, we have received the Environmental Product Declaration (EPD) numbers NEPD-4100-3121-EN and NEPD-4101-3121-EN.

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PAROC Calculus 

PAROC Calculus is a technical insulation calculation program for dimensioning thermal insulation for various applications in the HVAC and Process industries.

PAROC Calculus features:

• Easy-to-use interface; works on PCs, tablets, and cellphones

• Calculations of heat losses, surface temperatures, and temperature drop in pipes, ventilation ducts, process industry tanks, valves, and flanges

• Simple input of pipe diameters and duct dimensions (predefined)

• Correcting for thermal bridges of pipe and duct suspensions

• Print calculations as a PDF. Multiple simultaneous printouts in PDF are possible

• Saving projects and customizations (for registered users)

• Calculations based on the ISO 12241:2022 standard

Screenshot of Paroc Calculus software interface showing insulation calculation results for HVAC applications

Contact Paroc Technical Insulation