PVC Thermal Insulation
One of the main goals of modern building construction is the maximum utilization of the energy required for heating and air conditioning of the building.One of the main factors of energy loss in buildings are the frames and specifically the thermally-insulated behavior of the fraames construction materials. The thermally-insulating capacity of PVC profiles is the reason for the development of penetration of synthetic frames in the Greek market.
The Synthetic frames in relation to other materials.
As we know the thermal insulation is related to the heat transfer coefficient k, the smaller it is the better insulation has the material.In accordance to official surveys it has been proved that aluminum profiles have, those with thermal bridge a heat transfer coefficient k = 2.7 to 3 W / m K, while the simple aluminum profiles k = 4 to 5 W / m K. So 31.5% better thermal behavior K = thermal transmittance coefficient of the frames, DIN V 4108-4K of the aluminum = 3.8 W / m of Synthetic = 2.6 W / m KK Wof wood = 2.6 W / m K. The reason why synthetic frames are insulated is that the synthetic material is a poor conductor of heat and does not transfer heat inside from the outside and vice versa.
PVC Noise Insulation
A key factor the influences the noise-insulation ability of frames is the glass. The thickness of the glass must not be less than 4 mm, because in such cases it is susceptible to bending. The more the distance between the double glass grows the softer becomes the connection between the two glasses through the air among them, having as a result an optimized noise insulation.The asymmetrical glass thicknesses are better than the symmetrical ones (e.g. 8-12-4 instead of 6-12-6) as it this case we avoid the simultaneous coordination of crystals.We indicatively mention some special rates for various glass types 4-12-4 Rw noise insulation index (in frames) 32-34 dΒ4-16-4 Rx noise insulation index (in frames) 33-35 dΒ6-12-4 Rx noise insulation index (in frames) 34-36 dB For comfortable living in your space the required values of noise ratioare: - Bedrooms (night) 25-30 dB- Living room 30-40 dB- Offices 40-50 dB
Noise insulation categories
According to DIN4109 instructions the noise insulation ratio is at very high levels at synthetic frames and with regard to specific to glasses with similar sound insulation the reduction of external noise is reduced by 70%. This ensures the protection against noise that constantly becomes more necessary. Quiet residential area 25-29 Rw in dB Road of normal circulation 30-34 Rw in dB Road of noisy circulation 35-39 Rw in dB Road of main circulation 40-44 Rw in dB Airplanes zone 45-49 Rw in dB
PVC Noise Insulation
Noise indexes: The human ear can perceive sounds in the sufficiently large frequency range from 16 to 16.000 Hz. The frequency range from 100 to 3,150Hz concerns structural acoustics. As it is difficult to realize the noise by placing it in a scale such as the meter for length, the kilogram to the weight or the second for time, illustrative examples for noise in dB are given.
Noise Noise Index in dB
No noise -10
Quiet Room 20
Room noise 50
Office noise 60
Intense Conversation 70
In Car 80
In Factory 90
Pain Limit 120
Airplane engine 130 (drum disaster).