Homes, classrooms, offices, function rooms, whether domestic or commercial, can benefit from MVHR, improving climate control whilst promoting energy efficiency.
“A heat recovery unit is basically composed of a directly driven fan, an exhauster and a heat exchanger, all perfectly assembled and joined inside a thermal and noise insulated structure. The internal extraction air circuit pass by the exchanger without mixing with the circuit of the external driven air.”
A heat recovery unit is similar to a balanced ventilation system, except it uses the heat in the outgoing stale air to warm up the fresh air going into the building. A typical unit uses two fans, one to remove the household air (exhaust air) and the other to bring in the air (intake air).At the centre of the system lies the hear exchange core, this ore transfers heat from the outgoing stream of air to the incoming stream in the same way that a radiator in the car transfers heat from the engines coolant to the outside air to maintain the cars temperature. The core is composed of a series of narrow alternating passages where airstreams flow. As the streams move through, the heat is transferred from the warm side to the cool side without the two sides ever mixing.
Heat recovery can recover up to 85% of heat in the outgoing airstream making them much more effective than natural methods of ventilation such as opening a window to allow fresh air to enter which would allow the warm air to escape. Then the heating system would need to reheat this new make up air. HVR systems are build for both domestic and commercial properties so the fan speed can be set depending on the needs of each particular building. A slow to medium fan speed may be adequate for a domestic property but may need to run faster for busier commercial properties. For businesses, reusing the heat generated during industrial processes is key. The heat energy can be redirected elsewhere resulting in increased energy savings and reduced energy costs.
By choosing the right heat recovery system, customers can maximise heat conservation, redirection and or re-usage. The recovered heat could be suitable for direct as a recirculated, controlled atmosphere for other parts of the manufacturing process. Learn more about the differences between basic and quality MVHR systems here.
When installing a MVHR system, each building will be different with geometry and length of duct work varying resulting in very different pressure losses on each installation.
About the GRE G9 Fan:
The same constant volume software is available in a double inlet centrifugal, enabling higher air volumes and system performance, resulting in a cost effective and energy saving device.
We have a wealth of technical expertise and can assist with fan selection for a wide array of applications in the industrial and OEM market. Download our OEM brochure here.
Contact us or visit our website for more information on how Axair can assist with Heat Recovery application, increase energy efficiency or any other project on 01782 349430