There are two types of floor heating systems: no backfilling and backfilling. They always make users feel very mysterious and don't know how to choose. Today I will talk about my understanding of them.
1. Differences in name and system
The backfilling mentioned here refers to the phenomenon of burying the ground heating pipeline with concrete mixed with cement, pea stone (at least round stone without edges and corners) and river sand mixed with water Because the concrete has water, the floor heating without backfilling is called dry floor heating or thin floor heating, and the floor heating requiring backfilling is called wet floor heating.
2. Construction procedures and materials used are different
The backfill free floor heating materials and construction conditions are roughly as follows: first, lay a 3cm thick groove plate or mushroom plate on the ground. Specifically, the groove is used to directly lay the floor heating coil, and the mushroom plate is clamped by the regularly arranged convex mushroom heads.
Concave floor heating is made of heat conductive aluminum and thermal insulation board. Heat conduction aluminum will be used for pipe heat dissipation to increase the heat conduction area, and the materials transmitted to the ground will heat up; Mushroom plate floor heating pipe will transfer heat. The mortar around the pipeline dissipates from the mortar to the ground, and some are directly laid on the floor. The energy consumption of mortar filling is much lower.
The construction process of wet floor heating is to install moisture-proof film and boundary insulating tape, then install extruded insulation board and reflective film, then install floor heating coil, install concrete backfilling and mortar leveling. After backfilling, leveling and drying, subsequent processes can be carried out.
Generally speaking, the construction of dry floor heating is a little simple without many steps, that is, the floor heating module (insulation board reflective film), and then the floor heating coil. If it is a trough type direct wood floor, it can be paved, and the mushroom board can be tiled directly with a ceramic tile trowel.
The wet method of floor heating needs to be carried out step by step, and then the concrete backfilling and leveling shall be carried out according to the floor heating backfilling standard, and the next decoration shall be carried out after drying.
3. Different occupied space and bearing capacity
From the previous introduction, we should roughly understand that their thickness is different. Backfill free dry-type floor heating. The thickness of household installation module is 3cm, occupying 3cm of floor heating space; The wet floor heating insulation board is generally 2cm, and the height of its occupied space is 6cm with concrete leveling of 4cm.
In addition, in my work, I found that some businesses are using ultra-thin modules (for example, under the bidding of developer projects), the thickness is only 2cm, the thermal insulation performance is too poor, and the power consumption in the later stage is quite large; In particular, since the backfill layer in the later stage has no load-bearing protection, once the gravity of the furniture is unbalanced, it will bring the possibility of ground collapse; This is not the case with wet floor heating.
4. Different heating time
In the current market, we always like to compare the heating time of backfill free floor heating and wetland heating. Under the condition of the same water temperature, the ground heating without backfilling will certainly rise faster, If the water temperature is 55-60 degrees, the heating time of dry floor heating is faster than that of wet floor heating, generally about 3 hours, while wet floor heating is almost 6-8 hours.
Because of this warming factor, many businesses hype marketing rhetoric, saying that floor heating has a certain high-tech space to improve their value; In the final analysis, the main reason is that there is no time for the military to return to the wetland without heating materials, so I don't think there is the same time for the military to return to the wetland without heating materials.
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