Flooring heat insulation ability to impact on the heating effect

Edit：管理员   Browse：   Date：2013-07-29

Floor heating at the bottom of the insulating layer can prevent heat plays a passed down, that heat up the single direction transmission effect, therefore, the thermal insulation layer must have excellent heat insulation effect. In addition, the insulation must also have a certain strength to withstand the upper load. Due to the thermal insulation layer of floor heating quality is good or bad directly affects the quality of the whole floor heating engineering, floor heating insulation materials has attracted more and more professionals in the industry. Now there are two main types of thermal insulation materials on the market, is a kind of polystyrene foam board, another is foam cement. This two kinds of heat insulation materials have their own advantages, but also exists some disadvantages respectively.

Polystyrene foam board (hereinafter referred to as benzene board)

Benzene plate thermal conductivity is 0.041 W/(m.k), heat insulation effect is very good, is ideal for terrestrial heat insulation material, but the benzene board exist the following disadvantages:

A, susceptible to compression deformation on the weight of concrete and concrete under the action of static load and dynamic load, benzene plate is compressed deformation easily. When was compression deformation in bottom of benzene board, concrete because of the bending ability is poor, is bound to appear rupture and collapse. Cause concrete compression, shortening the service life of the pipe, serious when may be broken water pipe, thereby causing undue losses.

Second, the fatigue strength design service life of floor heating is decades of deformation. In the process of long-term use, floors, the dynamic load will make benzene plate produce fatigue strength, thus lowered the carrying capacity of benzene plate, deformation of further increase, the ground would cave in. The damage of pipe will be further intensified.

Three rising, coefficient of thermal conductivity due to benzene plate is compressed deformation, its density increases, so the coefficient of thermal conductivity will follow up, the heat insulation effect will be reduced accordingly. To this, as long as to ensure that the concrete layer fracture, no other problems would be solved. If carried out in accordance with the plate stress calculation reinforcement and determine the thickness of the concrete, the cost will be high.

Cement foamed insulating layer

The coefficient of thermal conductivity of cement foam is benzene board two times. In theory the thermal insulation layer thickness should be twice the benzene board, namely 4 cm thick, thus reducing the net height of the room. Foamed cement is the construction on site, it is difficult to control foam expansion, and the transportation construction, bubble breakage rate is higher, the coefficient of thermal conductivity of nature more or less there will be changes. As heating fee for a door of a table, attention to user for heating bills, and terrestrial heat insulating layer of insulation effect will be more and more people attach importance to natural. And if you can put the benzene board insulation effect and the organic combination of the strength of the foamed cement, thermal insulation material is an ideal insulation material of floor heating.

It is understood that at present some enterprises has developed this kind of new heat insulation plate and to cause the attention of the industry. Reportedly, the new subject is polystyrene insulation board, supporting part for thermal insulation of concrete, polystyrene board thickness is 2 cm, the thickness of the bearing part is 3 cm. The insulation plate is equipped with water pipe groove, pipe specifications, can also save wire mesh and reflective film. Due to the load bearing part 3 cm high, so can save some concrete dosage. Concrete filling layer thickness is 4 cm, concrete, 200 largest spacing between the two bearing insulation concrete column is 14 cm. Load above the concrete anti-crack calculation according to the 200 kg/square meter, the concrete bottom will not crack, therefore, the ground won't collapse. In addition, because conduit to receive strength evenly, the pipe will extend the life of a. Because of new insulation advantages make up for the defects of the benzene board and foam cement solves the practical problems existing in the insulating layer, therefore, it is considered to be an ideal insulation material of floor heating.

 

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