- Fouling – this is the most common heat exchanger problem. It occurs on the inside of tube walls and causes damage to the heat exchanger, which decreases its performance. The most common causes of fouling include corrosion, crystallization, decomposition, oxidation and polymerization, settlement of sludge, rust, dust particles, and various biological deposits.
- Maldistribution – refers to irregular flow within the heat exchanger. It leads to decreased thermal performance.
- Turndown – the tubeside flow regime drops in the laminar or transitional region, which interrupts the heat exchanger’s performance and leads to unpredictability, causing it to become hard to control.
- Different performance issues – most problems that happen in heat exchangers are results of properties that have been set in tubeside fluids.
- Efficient heat exchanger emergency repair – the company must be able to conduct emergency repairs on heat exchangers. If they cannot perform emergency repairs, they won’t be reliable enough to fix less urgent ones either.
- Ability to meet the most stringent welding requirements
- The performed repair should meet ASME (American Society of Mechanical Engineers) and TEMA (Turbular Exchanger Manufacturers Association) requirements.
Dunn Heat Exchangers and our hard-working craftsmen are able to perform urgent repairs and bring heat exchangers back into functionality in a timely manner. Additionally, we are able to work with all types of material because our company meets all industry’s regulations regarding welding standards. When it comes to welding we perform various techniques like GMAW (Gas Metallic Arc Welding), SMAW (Shielded Metallic Arc Welding), SAW (Submerged Arc Welding) etc. Moreover, we work 24/7, incorporate different technologies and designs, and we are determined to do every job successfully.