Covering a
green future
Air system biogas domes
To maintain a stable pressure between the membranes of the biogas domes we have three critical components: blowers, the air supply system, and an air relief system. For every double membrane cover we calculate and design the perfect fit for the given situation.
Blowers
Since the pressure between the membranes of a biogas dome needs to be as steady as possible, our blowers make sure that enough air is being blown between the two membranes at all times. For the biogas domes, the pressures and the flows are typically much higher than with double membrane roofs. We therefore strongly advise our clients to have us calculate the needed air flow and air pressure for their project. On request, we can calculate the amount of air that the blower will be able to release into the roof and at what pressure. These blowers can vary from the small FRv075, Frv110 and FRv110+ to very large blowers for 30-35 mbar and flows up to 5.000 m3/h.
Air supply system
To further stabilize the air system we use a very high-quality air supply system. It is mainly made from HDPE to provide a long-lasting system. The air supply system is meant to get the pressure and flow from the blower between the membranes. Choosing the correct system and the correct diameter of the system is important so that the blower can deliver as much pressure and flow into the roof as is needed on the project. Given the very wide range of pressures and flows that can be seen on these biogas domes, we would advise to have a calculation made to determine the correct diameter for the given pressure and flow in your project.
Air relief system
When the blower and the air supply system are working correctly, the air pressure should never drop below the given levels. At the same time, to prevent the roof from too high a pressure, a well-calculated air relief system is extremely important! We will set the air relief system to the desired air pressure. The valves on the systems will open when this pressure is reached and will ensure that the correct amount of pressure and/or flow is released into the air. We can calculate the needed valves and the needed dimensions on the pipework for any given situation.
