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Heating water remediation in accordance with VDI 2035
Scale formation, corrosion and silting are frequent causes of damage in older heating systems. For this reason, VDI 2035 specifies guide values for filling and make-up water — forming the basis for economical, safe and sustainable operation and contributing to the fulfilment of warranty conditions.
The VDI 2035 guideline (Prevention of damage in hot water heating systems) represents the current state of the art, increasing energy efficiency and operational safety in heating systems where the intended flow temperature does not exceed 100°C.
Dr. Hartmann Chemietechnik's heating water treatment using the bypass process enables compliance with the prescribed values — meaning that existing heating water can be treated during ongoing operation in accordance with VDI 2035, with the following advantages:
- Better heat transfer and savings in heating costs
- Prevention of corrosion, scale and sludge formation
- Reduction of CO2 emissions
- Prevention of long-term damage to the system
- Manufacturer specifications taken into account
- Sustainable operation through process reliability and value preservation
An initial heating water analysis provides an overview. Request our support.
Learn more in our free webinar: "Renovation of heating systems.
Information on VDI 2035
Prevention of damage in hot water heating systems – scale formation and water-side corrosion
The revised guideline addresses damage caused by scale formation and water-side corrosion. It provides recommendations for hot water heating systems according to DIN EN 12828 where the intended flow temperature does not exceed 100°C. It also applies to systems operated temporarily or permanently in direct hydraulic connection with closed cold or cooling water circuits. Scale formation and water-side corrosion are now addressed in a single combined guideline, incorporating technical knowledge from existing plant operations.
Remediation of closed cooling circuits in accordance with VDI 6044
Closed cooling circuits present specific challenges due to complex system components and a wide variety of materials. The extremely long residence time of water in the system results in low concentration cycles and reduced make-up water volumes, which promote deposit and corrosion tendencies.
Without interrupting operations, we carry out cooling water remediation of your cooling systems during ongoing operation — from the initial system analysis through bypass remediation to handover back to the operator. After thorough treatment of the cooling water in accordance with VDI 6044, corrosion, lime deposits and microbiological contamination are significantly minimised, resulting in energy cost savings, greatly improved plant efficiency and increased process reliability.
The remediation focuses on the following:
- Cost savings through reduced coating on heat exchanger surfaces
- No loss of performance or efficiency
- Reduction of water-side corrosion damage
- Manufacturer specifications taken into account
- Prevention of medium and long-term damage to the system
- Sustainable operation through process reliability
- Reduction of CO2 emissions
An initial analysis provides an overview. Request our support.
Information on VDI 6044
Prevention of damage in cold water and cooling circuits
The VDI 6044 guideline, introduced on 1 April 2023, provides clear specifications for the planning, construction and operation of closed cold water and cooling circuits with a circulating water temperature of less than 40°C, taking into account the current state of the art. Particular attention is paid to plant monitoring.
Advantages of system remediation
- Optimisation of water throughput
- Increase of operational safety
- Reduction of downtime and production losses
- Process reliability
- Improvement of the process flow
- Improvement of heat transfer
- Maximisation of maintenance intervals
- Prevention of material damage
- Value preservation
- Compliance with guideline-compliant operation
Our consulting engineers will be happy to support you on site with any questions on system remediation for heating and cooling water treatment.
