ALEX-DEPOT Insulation Shells for Your Plate Heat Exchanger

PUR rigid foam insulation shells are the ideal solution for reliably protecting plate heat exchangers against energy loss and condensation. Thanks to their excellent insulating properties, they ensure that heat stays efficiently within the system and no unnecessary energy is wasted. At the same time, they prevent the formation of condensation on the surface of the heat exchanger, reducing corrosion and consequential damage.

With a precisely fitting shape, low thermal conductivity, and high durability, PUR rigid foam insulation shells significantly contribute to improving efficiency and operational safety in heating, cooling, and industrial systems.

Optimized Efficiency with PUR Rigid Foam Insulation Shells

An uninsulated plate heat exchanger continuously loses heat to its surroundings. Our precisely fitted insulation shells made of robust PUR rigid foam counteract this effectively and provide improved thermal insulation. With a material thickness of 20 mm and a thermal transmittance coefficient of approximately 1.1 W/(m²K), they significantly reduce heat loss. Compared to an uninsulated operation, this can achieve an efficiency increase of over 90%! Thanks to their simple snap-on installation, the insulation shells can be quickly and easily mounted, and retrofitting is possible at any time. Additionally, the closed surface provides protection against moisture, corrosion, and mechanical impacts.

Plattenwärmetauscher Isolierschalen aus PUR-Hartschaum für optimale Effizienz und Dämmung Zwei Plattenwärmetauscher Isolierschale aus PUR-Hartschaum nebeneinander

Advantages of Our PUR Rigid Foam Insulation Shells

1. Excellent Thermal Insulation

PUR rigid foam has a very low thermal conductivity (λ ≈ 0.023–0.029 W/(m·K)). As a result, continuous insulation significantly reduces heat loss from the plate heat exchanger and improves system energy efficiency. In practice, this leads to noticeable savings in heating and cooling energy. At the same time, the uniform insulation ensures that temperature fluctuations within the heat exchanger are minimized, making operation more stable and predictable.

2. Energy Savings

By reducing heat loss through PUR rigid foam insulation, less energy is required to maintain the desired temperature within the plate heat exchanger. This leads to a measurable reduction in energy consumption and optimization of operating costs, as heating or cooling capacity is used more efficiently. The high insulating effect of the closed-cell foam ensures consistent thermal efficiency throughout the entire service life.

3. Prevention of Condensation and Corrosion Protection

With closed-cell PUR insulation, the outer surface stays above the dew point, preventing condensation on the heat exchanger. Closed-cell foams absorb virtually no water (water absorption <1%). In industrial heating and cooling systems, this prevents rust formation or microbial deposits on the plates and extends the equipment’s lifespan. Properly installed insulation acting as a moisture barrier significantly reduces corrosion and maintenance risks.

4. Wide Range of Applications

High-quality PUR insulation shells are typically designed for operating temperatures of approximately –30 °C to +130 °C. This makes them suitable for both heating circuits (process temperatures) and cooling applications (e.g., solar systems, refrigeration units) in industrial and building technology. This temperature range meets the requirements of many standards and applications (see, for example, DIN EN 14597 for refrigeration systems), ensuring that the insulating performance is maintained even under fluctuating temperatures.

5. Mechanical Strength and Durability

PUR rigid foam is pressure-resistant, dimensionally stable, and resistant to mechanical stress. Its closed-cell structure makes it chemically resistant and virtually unaffected by moisture. This ensures that its insulating performance is maintained over the long term, even under vibrations, cleaning processes, or mechanical influences.

6. Easy Installation and Retrofit Capability

The insulation shell is made in two parts and can be easily placed around the installed plate heat exchanger and secured. This modular design allows for quick retrofitting or inspection without dismantling the system and reduces downtime.

The implementation of PUR rigid foam as an insulation material represents a scientifically proven method to significantly increase the thermal efficiency of plate heat exchangers and sustainably reduce energy consumption. By specifically minimizing heat loss and optimizing temperature management, this technology not only helps lower operational costs but also supports long-term system stability. For maximum effectiveness, a precise and seamless installation of the insulation shells is essential, ensuring that the entire surface of the heat exchanger is consistently protected and thermally optimized. This approach complies with recognized standards in thermal system engineering and reflects a method of the highest engineering precision.

All insulation shells at a glance

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All Plate Heat Exchangers - Model Comparison
Plattenwärmetauscher B3-12-12B3-12-12
44,00€
In stock
Plattenwärmetauscher B3-12-20B3-12-20
59,00€
In stock
Plattenwärmetauscher B3-12-30B3-12-30
69,00€
In stock
Plattenwärmetauscher B3-12-40B3-12-40
89,00€
In stock
Plattenwärmetauscher B3-12-50B3-12-50
99,00€
In stock
Plattenwärmetauscher B3-12-60B3-12-60
109,00€
In stock
Plattenwärmetauscher B3-23-20B3-23-20
99,00€
In stock
Plattenwärmetauscher B3-23-30B3-23-30
129,00€
In stock
Plattenwärmetauscher B3-23-40B3-23-40
159,00€
Out of stock
Plattenwärmetauscher B3-23-50B3-23-50
189,00€
In stock
Plattenwärmetauscher B3-32-20B3-32-20
159,00€
Out of stock
Plattenwärmetauscher B3-32-30B3-32-30
199,00€
Out of stock
Plattenwärmetauscher B3-32-40B3-32-40
249,00€
In stock
Plattenwärmetauscher B3-32-50B3-32-50
269,00€
In stock
layers Number of Plates 12 20 30 40 50 60 20 30 40 50 20 30 40 50
swap_vert max. Power 25 kW 45 kW 65 kW 80 kW 90 kW 130 kW 90 kW 135 kW 180 kW 225 kW 115 kW 175 kW 230 kW 285 kW
view_in_ar Volume 0,22 L 0,36 L 0,54 L 0,72 L 0,90 L 1,08 L 0,80 L 1,20 L 1,60 L 2,00 L 1,00 L 1,50 L 2,00 L 2,50 L
crop Heat Exchange Area 0,114 m² 0,24 m² 0,36 m² 0,48 m² 0,60 m² 0,80 m² 0,46 m² 0,69 m² 0,92 m² 1,15 m² 0,64 m² 0,96 m² 1,28 m² 1,60 m²
water Flow rate max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 4 m³/h max. 12 m³/h max. 12 m³/h max. 12 m³/h max. 12 m³/h
weight Weight 0,80 kg 1,11 kg 1,50 kg 1,85 kg 2,23 kg 2,61 kg 2,57 kg 3,41 kg 4,27 kg 5,10 kg 3,86 kg 4,97 kg 6,20 kg 7,50 kg
straighten Size
(Length x Width x Height)
L:191mm W:073mm H:034mm L:191mm W:073mm H:052mm L:191mm W:073mm H:067mm L:191mm W:073mm H:097mm L:191mm W:073mm H:112mm L:191mm W:073mm H:127mm L:315mm W:073mm H:052mm L:315mm W:073mm H:074mm L:315mm W:073mm H:096mm L:315mm W:073mm H:119mm L:286mm W:116mm H:058mm L:286mm W:116mm H:082mm L:286mm W:116mm H:103mm L:286mm W:116mm H:135mm
conversion_path
Connection
2x ½ & 2x ¾
or 4x ¾ inches 		2x ½ & 2x ¾
or 4x ¾ inches 		2x ½ & 2x ¾
or 4x ¾ inches 		2x ½ & 2x ¾
or 4x ¾ inches 		2x ½ & 2x ¾
or 4x ¾ inches 		2x ½ & 2x ¾
or 4x ¾ inches 		4x 3/4 inches 4x 3/4 inches 4x 3/4 inches 4x 3/4 inches 4x 1 inch 4x 1 inch 4x 1 inch 4x 1 inch
split_scene_left Collection
B3-12 Collection B3-12 Collection B3-12 Collection B3-12 Collection B3-12 Collection B3-12 Collection B3-23 Collection B3-23 Collection B3-23 Collection B3-23 Collection B3-32 Collection B3-32 Collection B3-32 Collection B3-32 Collection

Insulation on a plate heat exchanger is a layer of insulating material placed around the heat exchanger to improve heat transfer efficiency and minimize energy loss. Insulation offers various advantages:

  1. Heat Loss Reduction: Insulation prevents heat from escaping the heat exchanger, thereby helping to maintain heat transfer efficiency. This is particularly important in applications where the temperature of the liquids or gases being transferred needs to be controlled.

  2. Energy saving: By reducing heat loss, less energy is required to maintain the desired temperature. This leads to energy savings and lower operating costs.

  3. Protection from external influences: Insulation protects the plate heat exchanger from environmental influences such as cold, heat or moisture. This can extend the life of the heat exchanger and stabilize its performance.

  4. Improved Safety: Insulation can help reduce the external surface temperature of the plate heat exchanger, reducing the risk of burns or other accidents if people come into contact with the equipment.

Insulation is typically applied around the entire plate heat exchanger, paying particular attention to the sealing areas and connections to ensure efficient insulation. We use PUR rigid foam for our insulation, which is a special type of insulation. PUR stands for polyurethane and is a high-density and efficient insulation material. Here are some specific features and benefits of using rigid PUR foam as insulation for a plate heat exchanger:

  1. Excellent insulation: PUR rigid foam is characterized by its high thermal insulation ability, which means it is very effective in reducing heat loss and optimizing the heat transfer efficiency of the plate heat exchanger.

  2. Lightweight: PUR rigid foam is a lightweight material, making it easier to handle and install.

  3. Longevity: PUR rigid foam is robust and resistant to moisture and mechanical stress, which extends its service life.

  4. Minimizing cold bridges: This insulation material minimizes the formation of cold bridges, helping to improve the consistency of the insulation.

  5. Easy Installation: The use of PUR rigid foam insulation allows for relatively easy installation around the plate heat exchanger.

The use of PUR rigid foam as an insulation material offers the advantages mentioned and can be used in various applications to optimize the thermal efficiency of the plate heat exchanger and achieve energy savings. It is important to ensure that the insulation is installed carefully to ensure efficient coverage of the entire heat exchanger.

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