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Brazed plate heat exchanger

Brazed plate heat exchanger
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Environmental Product Declaration Brazed plate heat exchanger Alfa Laval endeavours to perform its own operations as cleanly and efficiently as possible, and to take nvironmental e aspects into consideration when developing, designing, manufacturing, servicing and marketing its products. It does this by identifying the significant environmental impacts of its products and operations and taking appropriate measures to reduce them. This work is supported by implementing environmental management systems (normally certified to ISO 14001) in all its manufacturing operations. This Environmental Product Declaration is made in accordance with ISO 14021. For more information, Life Cycle Assessment and Sustainability Reports are available on request. The product A brazed plate heat exchanger consists of a pack of thin corrugated metal plates. A thin copper foil is placed between each plate. The assembly is placed in a high temperature furnace in which the copper foil melts and brazes two adjacent plates together. The melted foil also seals the channel formed between two plates. In order to retain high internal pressure, two thicker front and end plates are normally brazed to both sides of the plate pack. Connections for media are either brazed or welded to the front plate. The size of the unit and the number of plates are determined by the requirements of the particular application and duty. Each individual brazed plate heat exchanger is optimised for its duty and as a result, the usage of materials is kept to a minimum. Construction materials Plates and connections Both the corrugated plates and the thicker front and end plates are made of stainless steel type 304 or type 316. The degree of recycled material in stainless steel 316 is typically between 60-90%. Connections are normally made of stainless steel type 304 or 316, but may also be made of carbon steel. Packing Packing material consists of wood, plastics, cardboard boxes and, in some cases, metal straps. Alfa Laval enforces strict environmental demands on suppliers for all types of packing material. Flow principle of a brazed plate heat exchanger Brazing material The brazing material is copper with 99.9% purity. For a complete brazed heat exchanger, the copper constitutes around 10% of the total weight.

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Insulation material The brazed heat exchanger is often insulted in order to minimize heat transfer between the heat exchanger and the ambient. In cooling duties the insulation is made of polypropylene, and in heating duties it is made of polyurethane. Restricted substances All components are checked against EU legislation and global agreements such as the Montreal Protocol and the REACH candidate list. No components contain any substances on those lists. Manufacturing The major environmental impact during manufacturing comes from the construction materials. Energy (electrical, fossil fuels)...

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Brazed plate heat exchanger 2Pages

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Brazed plate heat exchanger
2Pages