Minimize vibrations. Reduce noise.
A major portion of the sound that reaches our ears - be it a chord from a guitar, the squeal from brakes or a lively discussion at the neighbours - originates from or is transmitted through vibration solid structures.
Different concepts of vibration isolation for quieter heat pumps
Compressor as source of noise
Compressors in heat pumps
Various bearing concepts
Five hints for quieter heat pumps
The professional advice Getzner provides is in a class of its own. Heat pumps installed on the top floor were causing noise-related problems. On the recommendation of the experts at Getzner, we retrofitted the heat pumps with Isotop® DSD and the Isotop® FP/K footplate in two projects – and the improvement is simply incredible.
Our products for heat pumps
Isotop® vibration damper
Isotop® spring mounts with damper core
Isotop® sandwich vibration damping pads
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Why you need Getzner's solutions for quieter heat pums
Keyword: Decarbonization
Decarbonization is a huge topic. Governments encourage the installation of heat pumps to promote efficient heating methods. This will certainly increase the number of heat pumps around us and lead to problem areas. We are all moving closer together. Several studies have shown that noise and noise reduction will become even more important in future.
This means we should take a closer look at the source of noise originating from a heat pump. Not only focusing on primary but also bringing attention to structure-borne noise in your product design and installation considerations. Therefore, protection against the generation and transmission of structure-borne noise plays an important role. In short, we need to talk about vibration isolation.
Learn more about vibration isolation
The elastic installation elements and the mounted equipment create, from a physcial point of view, an oscillatory system. This is described using the single mass oscillator model and possesses a resonance or natural frequency. The characteristic natural frequency of the system is derived from the decoupled mass m and the dynamic stiffness c of the elastic bearing.
The oscillatory system is excited by an external stimulus and starts to vibrate. The model refers to this as the exciting force. When assessing the isolating effect of a single mass oscillator, the frequency ratio between the excitation frequency of the external stimulus (fe) and the natural frequency of the vibrating system (f0) has to be considered.
An isolation effect only occurs in the frequency range fe/f0 > root 2.
In the resonancy range fe/f0 < root 2 there is an amplification of the mechanical vibration in all cases, independent of the dampening.
PUR as best choice
Polyurethane (PUR) materials are the industry standard for high performance elastic vibration isolation of components. Compared to conventional rubber, PUR contains no plasticisers, so their elastic properties remain constant for decades. Even more important for the vibration isolation performance is the dynamic stiffness, that describes the material response under load. Machine bearings on a polyurethane basis show a significantly lower level of dynamic stiffness compared to conventional rubber. This softness results in lower natural frequencies and in an increased effectiveness of vibration isolation.
At a glance
That is how to make your heat pump quieter: Either by decoupling the entire heat pump from the outside - or even better - by isolating the compresor inside. Polyurethane materials from Getzner will provide you with the premium vibration isolation required.
Quieter heat pumps - "quiet" easy with Getzner. Get in touch!
