Open the three question marks of geothermal heatin

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Compared with traditional heating methods, geothermal heating has many advantages, but what kind of floor is most suitable for geothermal heating and how to choose geothermal floor? How to pave geothermal floor? How to repair and maintain? I believe many people don't understand these problems very well. The reporter visited relevant experts for this purpose

compared with traditional heating methods, geothermal heating has many advantages, but what kind of floor is most suitable for geothermal heating and how to choose geothermal floor? How to pave geothermal floor? How to repair and maintain? I believe many people don't understand these problems very well. The reporter visited relevant experts for this purpose

question mark 1 what floor is suitable for geothermal heating

answer: composite floor is more suitable for geothermal heating

generally speaking, the quality of imported floor meets the European enpr13329 standard, and the quality of domestic floor meets the national GB/t1802-2000 standard, which can meet the technical requirements of geothermal heating floor installation

maybe after reading these general standards, some readers still don't know what kind of products to choose. Now there are many kinds of flooring on the market, including solid wood flooring, composite flooring and so on. Generally speaking, composite flooring is more suitable for geothermal flooring. Because the standard thickness of geothermal floor is 6.5 ~ 8.5mm, and the thickness of composite floor is mostly 6 ~ 9mm, of which the reinforced composite floor is mostly 6 ~ 8mm, and the three-layer solid wood composite floor is 8 ~ 9mm, which has better heat transfer performance, and its surface has a wear-resistant layer of aluminum oxide, which is conducive to the rapid diffusion of heat on the surface

the thickness of solid wood floor is generally about 2cm, and the keel should be laid during installation. If it is used as geothermal floor, there is air between the floor and the ground, and the thermal conductivity of air and wood is very low. In this way, the heat is not easy to be transmitted to the surface, which will lead to waste of heat, uneven surface temperature, and obvious temperature difference. And the composite floor is pressed by high temperature, and the internal moisture content is very small, so the floor will not be deformed due to the loss of moisture. Each layer of multi-layer solid wood composite floor is staggered horizontally and vertically, and mutual restraint. There are dense anti deformation grooves on the back, which decomposes the stress generated by the heating surface, so the deformation is very small

the solid wood floor has high water content and is easy to crack and deform under the condition of long-term high-temperature heating. If you must choose ordinary solid wood flooring, you should try to choose the flooring with film layer on the back, because it can be moisture-proof and waterproof, and can maintain the moisture content of wood and the humidity balance of the surrounding environment

relevant experts believe that the choice of geothermal floor should be determined according to the particularity of geothermal heating mode; It adapts to the repeated transformation of cold and heat and is conducive to heat conduction. In the same environment, the deformation of solid wood flooring is larger than that of laminate flooring, and the deformation of laminate flooring is larger than that of laminate flooring

in addition, it is better to comply with the following points:

first, better dimensional stability

this depends on the substrate density and internal bonding strength of the floor. The higher the internal bonding strength, the better the ability of the floor to withstand temperature changes, so as not to crack and other phenomena. Only the floor with relatively dense wood as the substrate can ensure that it will not crack and deform under high temperature for a long time

second, not afraid of humid environment

that is, the expansion rate of water absorption thickness. The floor used for hydrothermal floor radiant heating requires small size change under high humidity, and the expansion rate should be less than or equal to 2.5%. Generally speaking, the smaller the expansion rate, the better the moisture-proof performance of the floor

III. formaldehyde emission cannot exceed the standard

it is required that formaldehyde emission will not exceed the standard under the condition of long-term heating. When consumers choose geothermal floor, they must choose the floor with low formaldehyde content as much as possible, because the higher the temperature is, the more formaldehyde is released. In a relatively closed room, coupled with the formaldehyde release caused by other indoor items, indoor formaldehyde may exceed the standard and cause harm to human body

IV. heat transfer should be fast

at present, there are few brands that can provide heat conduction coefficient in the market, so consumers should pay attention to it when buying. Generally, products with high coefficient have better thermal conductivity

v. not afraid of high temperature

because the geothermal floor has to withstand high temperature heating for a long time, the performance of the decorative layer of the product is required to be stable, and there will be no fading and rough light under the condition of high temperature for a long time

question mark 2 how to pave geothermal floor

answer: first, the ground treatment should be careful before installation

the ground must be horizontal within a radius of two meters, and the height difference should not exceed 3mm. The ground should be completely dry. Before laying the floor, the geothermal heating test must be carried out, and the water inlet temperature should be at least 50 ℃ to ensure the normal operation of the heating system. And keep the temperature for more than 24 hours to make the ground dry and ensure that the moisture content meets the standard

second, the details of the installation process are the most important, and the order is exquisite

it is best to adopt the suspension installation method. The floor is close to the ground through the cushion material, and there is no gap between the floor and the ground, but a larger shrinkage gap should be reserved between the floors. Due to the large amount of moisture released by hydrothermal radiation heating, efforts should be made to prevent moisture

when paving, first clean the ground, pay attention to clean and straighten the wall corners, and ensure that enough expansion joints are left. The second step is to lay a layer of plastic cloth on the ground to isolate the moisture. The plastic cloth should be 10cm higher than the ground at the four corners. Step 3 lay the floor mat. Pay attention to reserve expansion joints. The joints shall be overlapped at least 5cm and must be sealed with adhesive tape. Skirting boards thicker than ordinary floors should be used and should be constructed independently. The floor can only be heated 24 hours after installation. In order to facilitate heat conduction, the cushion material should not be too thick

in addition, special glue for geothermal floor should be used; Do not lay rubber pads; You can't make a keel, because there will be air between the gaps, and the thermal conductivity of the air is low, which is not conducive to heat transfer

third, use special paper floor mats

the floor mats between the ground and the floor cannot use ordinary foamed plastic floor mats, but must use special paper floor mats for geothermal, because this kind of floor mats have fast heat conduction and no deformation. Ordinary foam floor mats have slow heat conduction and are prone to produce harmful gases under high temperature conditions for a long time, endangering the health of users

IV. the ground temperature should not be too high during construction

no matter the hydrothermal radiant heating system or the cable heating system, do not build a stove or use an electric stove on the site ground, because if the ground temperature is too high, the aluminum-plastic composite pipes under the ground may melt

due to the particularity of its function and the complexity of its geothermal system, the maintenance of geothermal floor has its own uniqueness compared with ordinary floor, and special attention should be paid to heating and moisturizing

question mark 3 how to maintain the geothermal floor


first, heating should be done step by step when using geothermal flooring.

when using geothermal flooring, consumers must pay attention to heating the floor and flooring step by step. During installation, the ground temperature should be maintained at about 18 ℃. Before installation, the cement floor should be gradually heated up, increasing by 5 ℃ every day until it reaches the standard of about 18 ℃. This temperature should be maintained for the first three days after installation. The temperature can be increased as needed after three days, and it can only be increased by 5 ℃ every day

when using geothermal heating for the first time, pay attention to heating slowly. When it is used for the first time, it should be gradually heated up in the first three days of heating: the water temperature is 18 ℃ on the first day, 25 ℃ on the second day, 30 ℃ on the third day, and can rise to the normal temperature on the fourth day, that is, the water temperature is 45 ℃, and the surface temperature is 28 ℃ ~ 30 ℃. Do not heat up too fast. If it is too fast, the floor may crack and distort due to expansion

when the geothermal heating system is used again after a long time, it should also be heated strictly according to the heating program as it was used for the first time

second, the ground temperature should not be too high

it should be noted that when using geothermal heating, the ground temperature should not exceed 28 ℃, and the water pipe temperature should not exceed 45 ℃. If it exceeds this temperature, it will affect the service life and service cycle of the floor. For ordinary families, when the room temperature reaches about 22 ℃ in winter, it is already very comfortable. If the temperature rises normally, it will not affect the use of geothermal floors

third, turn off the geothermal system and pay attention to the gradual cooling

with the passage of the season, when the weather is warm and the indoor heating of the geothermal system is no longer required, it should be noted that there is also a process to turn off the geothermal system, and the cooling process of the floor should also be gradual, not sudden drop. If the cooling speed is too fast, it will also affect the service life of the floor

IV. when the room is too dry, humidification can be considered

the dry climate in winter, coupled with the use of geothermal heating, the floor is easy to dry and crack under the condition of high temperature for a long time. At this time, it is necessary for the owner to humidify the room to prevent the floor from drying and deformation

when decorating, pay attention not to drill holes and nails on the ground, so as not to leak the geothermal pipeline, which will cause the geothermal system to run away and the floor to be discarded. In addition, because the floor surface is a heat dissipation surface, try not to make fixed decorative parts or place legless furniture on the floor, and it is not suitable to add a platform, so as not to affect the flow of hot air, resulting in poor room heating effect

because the surface temperature of the floor is relatively high, it is best not to place glassware and porcelain containing water directly on the ground in winter in rooms using geothermal heating system, so as to avoid the cracking of utensils due to uneven heating, thermal expansion and contraction, and the "water overflows the Golden Mountain" in the home

geothermal floor has become a fashionable decoration in home decoration, but we must pay more attention to details when purchasing and paving, especially in terms of maintenance, the requirements of geothermal floor are higher




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