THERMAL AND ACOUSTICS INSULATING MATERIAL

THERMAL AND ACOUSTICS INSULATING MATERIAL. BY: FAIZAN WASEEM FEMIYA THOMAS GARGI VENUGOPAL GOPIKA V S GOURI SANKARI S GOVIND S SURESH.

HOW THERMAL INSULATION WORKS?. 03. INTRODUCTION. 01.

INTRODUCTION. 01.

THERMAL INSULATION. It is the material that helps reduction of transfer of heat between objects. Prevents heat from escaping or entering rooms Reduce energy costs.

ACOUSTICAL INSULATION. It reduces transfer of noise When a room is soundproofed, the usually porous material, like foam or sponge, absorbs sound waves to reduce direct sound, echoes and reverberation..

APPLICATIONS. 02.

AUTOMOTIVE. PUBLIC AND RESIDENTIAL STRUCTURES. MECHANICAL.

SCHOOLS. OFFICES. TRANSPORTATION AND AUTOMOTIVE. RESTAURANTS.

HOW THERMAL INSULATION WORKS?. 03.

It reduces the transfer of heat between objects with different temperatures..

Consider thermal conductivity of insulator. Heat is transferred by conduction, convention and radiation.

Convection is heat that flows or is blown through the air.

HOW ACOUSTIC INSULATION WORKS?. 04.

0.. Acoustic insulation absorbs, transmits, or redirects sound waves.

Acoustic insulation that’s made of open-cell foams absorbs this friction within the material’s cellular structure. Open-cell foams can absorb noise across a range of frequencies, but a foam’s sound-absorption profile is determined by factors such as cell size, porosity, material thickness, and material density. With decoupling, gaps in parts of the structure prevent the sound vibration from continuing along its path..

DIFFERENCE BETWEEN THERMAL AND ACOUSTIC INSULATION.

Thermal insulation restricts heat transfer, whereas acoustic insulation restricts sound transfer or sound reverberation. The combined product is thermal acoustic insulation, which is effective in both reducing heat and noise transfer..

Thermal insulation works as a barrier against the transfer of heat. In winter, we generate warmth inside the home and effective insulation keeps the heat there. Our thermostat recognises when the house has reached a set temperature and the heater is automatically switched off. Without insulation, however, warmth escapes and the heater has to continue producing heat to maintain the desired temperature. The result is a higher energy bill..

In summer the roles are reversed. The heat is then on the outside and the same insulation stops much of it from penetrating the home. This reduces the need for air-conditioning units to run incessantly and you pay less on your energy bill. Many people report that they have earned back the cost of insulating their home already within the first few years..

The type of external wall insulation that home owners invest in often depends on the amount of noise pollution surrounding the home, such as road traffic. Other factors such as barking dogs and noisy neighbours also come into play as does the amount of time occupants spend at home. All thermal bulk insulation will reduce some noise transfer, but acoustic insulation is specially designed for soundproofing purposes..

It is becoming increasingly common to install acoustic insulation in at least some internal walls for sound management. It is unlikely that money spent on acoustic insulation within the home will ever be recovered through reduced energy bills. However, it can contribute towards a more quiet and pleasant place to spend time, which is often the reason it is installed in the first place..

These days this type of internal wall insulation is almost expected, rather than regarded as an optional extra, especially around theatres where modern sound systems easily make their presence felt throughout the house. Sound insulation can improve viewing experiences in home theatres by blocking out unwanted noises such as the washing machine and kitchen appliances, and at the same time causing fewer disturbances to the rest of the house. Other rooms that are commonly insulated for sound are laundries, bathrooms, offices and bedrooms. There is, however, a factor other than sound management to consider when insulating internal walls..

Internal wall insulation can be used in conjunction with a sophisticated climate control system, where heating and cooling energy is targeted to where it is needed most. They may have the option to turn up the heating in the living room but save energy by leaving it off in the unused spare room. Insulation in walls reduces heat flow between rooms and ensures that occupants maximise the benefits intended by the advanced heating and cooling system ..

THANKS.