SDE – Sunline Pressurization and Venting

SUNLINE THINKS EFFICIENT


With the entry into force of the VDI 2035 Part 2, for the first time a regulation regarding competence over the heating water is taken. Thus the operator of the system for the proper condition of "his" heating water is now in charge and this must be checked at regular intervals (at least once a year). However, since the operator is a layman, the planners and heating engineers will be held accountable to advise the operator and inform. VDI 2035 Part 2 contains documentation requirements for these tasks. Only perfectly degassed and desludged water transfers the heat efficiently without damaging the materials and technology. Therefore, the quality of the heating water is very essential to the

Air / gases cause significant impairment in heating and cooling systems:

  • Efficiency loss
  • shortened plant uptime
  • increased energy costs
  • noise generation
  • corrosion
  • sludging
  • flow disturbance
  • increased maintenance and repair costs

SUNLINE OFFERS FOR THIS VARIETY OF PROBLEMS A COMPACT SOLUTION

With the Sunline SDE compact system we make an important contribution to efficient and durable heating and cooling system with a very low maintenance and following functions:

  • pressure maintenance
  • expansion
  • venting and degassing
  • refilling
  • increase in efficiency

FUNDAMENTALS


GASES IN HEATING AND COOLING SYSTEMS

Noise generation, corrosion, sludging, pressure fluctuations, parts without function, efficiency deterioration of heat or cold generators, high maintenance costs, ... often the cause of air or gas in the system.

Water can bind higher amounts of gas under pressure. Due to the different pressure in heating and cooling systems, this bound gas can be released again in some areas (Henry's law). This gas can lead to malfunctions that cause corrosion or are transported with the medium and lead to flow noise and increased wear of valves and pumps by cavitations.

HOW THE GAS GETS IN THE SYSTEM?

Fill and refill water still contains a lot of air, which is bound in the water by the high pressure of the drinking water network (11 mg / l oxygen and 18 mg / l nitrogen). In addition, air is diffusing over the whole duration of the operation of the system via stuffing boxes, rubber membranes, plastic tubes, seals, etc into this one.

Pressure fluctuations caused by incorrectly sized, not maintained and improperly adjusted or defective expansion vessels are significant responsible. Gases may be generated by chemical reactions in the system.

REMEDIAL ACTION

Expansion vessels must be properly sized, have primary pressure set correctly and be continuously review. After filling the system, the installer / operator of the facility must vent properly and carefully. However, the dissolved gases in the heating water cannot be removed so that, therefore, frequently venting again is required. The permanent entry of gas into the heating system is also not prevented and there is still a high maintenance or repairs with insufficient success.

Here Sunline SDE is giving the solution for fast, safe, permanent pressure maintenance and venting of the system and thus the security for a long-term, trouble-free, efficient and economical operation.

SYSTEM INTEGRATION


The integration of the SDE system in a heating or cooling system is based on a simple principle:

SYSTEMS UP TO 500 KW

SYSTEMS > 500 KW

The Sunline pressure maintenance and venting system can also be used when using other heating and cooling systems.

PRODUCT DESCRIPTION


The Sunline pressure maintenance and venting system consists of a closed, pressure-free stainless steel tank with an opening for cleaning and a water level indicator.

The system is a compact unit with pressure maintenance pump and the control and regulation module which is composed of a pressure control device, a overflow valve, a refill solenoid valve, a level switch, a drain valve, a processor-controlled control with pressure display, a set-point adjustment and an USB interface for data output.

The SDE unit is fully electrically and hydraulically preassembled and preset according to object specifications to the correct operating parameters by factory.