China as the world's most populous nation, electrical floor heating market development prospects are very broad. But because the electric floor heating industry has just started, the industry also has some hinder the industry health and sustainable development issues.
Electrical floor heating system can be equipped with "structure of thin, light weight, quickly, saving electricity costs", etc., is electric floor heating can be a key factor in the popularization of
Electrical floor heating popularity abroad, builders can heating cable embedded in the concrete structure of the floor and does not raise the floor ground height, no increase in building load-bearing basis. But in China, currently does not have this possibility, electric warm most of the time are in late-stage decoration during surfacing into buildings.
If you strictly in accordance with the technical specification for floor radiant heating "in" electrical floor heating insulation not less than 20 mm, concrete fill layer is not less than 35 mm, curing period of not less than 21 days, "requirements for construction, electrical floor heating installation will produce the following results:
1. structural layer elevation above ground 55 mm, affect non-heating zone of leveling the ground, and will make the room floor hypervariable short.
2. floor load increase 60 kg/m2-80 kg/m², filling concrete construction amount of large, long life cycle. If the entire building electrical floor heating large installation, developers will be the basis for building the original design could not bear such a large load and abandon the project, is not conducive to large electrical floor heating project promotion.
3. electric heating construction because of concrete-filled layer curing period of not less than 21 days, unable to follow in the near future, the decoration work will affect the entire renovation cycle.
4. due to structural layer thick heat up more slowly (usually takes 4 hours ~ 8 hours), the heating need uninterrupted use, late run electricity is high, "hold on, don't play" phenomenon. But for those who have intermittent use of electrical floor heating, warming for users on slower, installation of electrical heating is turned.
These phenomena are greatly hampered the electric floor heating in the popularization and promotion in China, so the relevant enterprise must present the traditional electric heating materials and construction techniques to improve, to radically avoid the occurrence of the phenomenon. Electrical floor heating system designed to identify the "structure of thin, light weight, quickly, saving electricity costs," features and easy installation process, we can really be consumers, electric floor heating products in order to popularize.
For the above issues, foreign electrical floor heating peer is resolved:
1. with a diameter of 2 mm ~ 3 mm, the new heat-resistant insulation material PTFE thin heating cable manufactured by replacing the current diameter of 6 mm or more, with rough material manufacture XLPE heating cable.
2. use the thickness of only 3 mm ~ 5 mm, adhesion, liquidity, smoothness, anti cracking, anti shrink, and other performance indicators, excellent and fast dry self-levelling mortar instead of 35 mm or more concrete fill layer.
3. use a specially crafted electrical floor heating professional use insulation plate (thickness of 20 mm, 10 mm, 6 mm, this insulation board with a conductivity of small, high compressive strength, difficult to deformation, and a variety of binders and easy bonding characteristics) instead of the domestic use of 20 mm thick EPS insulation boards.
4. use commonly known as "soft steel" Bolivia filament grid cloth instead of wire mesh.
These changes will enable the electric heating system structure total thickness down to 10 mm ~ 25 mm, weight reduced to 4 kg/m2 ~ 7 kg/m2, warming up to just 20 minutes to 30 minutes, that is, out-of-the-heat effect. This kind of system to those of intermittent use electric floor heating is very suitable for users, although less regenerative properties, but the effect of running the electricity savings are obvious.
But China's electrical floor heating industry if you want to implement these scenarios, you need the existing floor radiant heating technology for "increase the related technical specifications and construction requirements, but this is actually a electric floor heating with international practice.
China electric floor heating industry should be in line with international standards, and continuously develop and revise specifications for the healthy development of industry and industry standards and regulations
As China's electrical floor heating a late starter, and electric heating industry more advanced in some countries there is still a gap. For example: International has been widely used for more than ten years by PTFE material manufacture of heating cable, there is no national testing standards; heating cable for electromagnetic radiation safety standards also has not yet developed; as the People's Republic of China industry standard floor radiant heating technology of the Statute of the 2004 edition of the ZGJ142-4.4.2 and 2009-09-17 revision of section 8.2.5 also exist "heating cable outer diameter recommends no less than 6mm" and "floor radiant heating systems with outer diameter of the heating cable, not smaller than 6mm" description of words, the world's developed countries in the field of civil electrical heating has been used line power most 10 Watt ~ 13 Watts, outer diameter 2 mm ~ 3 mm thin heating cable is to achieve "structure of thin, light weight, quickly" effect. The author in Beijing to warm the Board February 2007 "domestic heating cable manufacturers and imported brands heating cable distributors Forum" have this issue on the appeal, it seems that this issue has not been resolved. I believe that only with the international advanced technology, to acquire foreign counterparts in an effort to catch up with the world advanced technology, is the domestic industries and sectors health, rapid development, geographical protection it will hinder domestic electrical floor heating rapid development of the entire industry. Vigorously, correct propaganda and impart knowledge about electrical floor heating, correct the error information behavior
During the work of the author, has often been users and heating installation services required by the judgment of such a discourse: "single channel
Body heating cable power cannot offset of electromagnetic fields generated by the double power heating cable conductor of electromagnetic fields generated by double harness may be a time of current cancel each other out. "At first, the author to ask who explained:" use alternating current conductor will produce electromagnetic field, electromagnetic fields generated by the way, ray radiation, single channel or dual guide are not likely to cancel each other out, virtually eliminate electromagnetic fields is a dense network of grounding shield. Simply put, the electromagnetic field is grounding shield off, instead of being offset. "But many ask ' still with a grain of salt, and come up with a manufacturer of heating cable product collateral, I realize the Chinese electric floor heating industry lack of awareness and common sense. Some manufacturers or practitioners often take it for granted in the heating cable product literature on non-professional, misleading consumers of so-called scientific theory. No wonder consumers due to electrical heating products mess up difficile and WinCE. There are many such examples, these phenomena to the domestic electrical floor heating industry health development is very harmful. Professional heating magazine should correct or reject the publication of such advertisements, and many published articles of professional knowledge, strengthening the theory of learning in this area. Manufacturers and distributors of imported brands should strengthen practitioners professional knowledge training, do not mutually discredit, common maintenance electrical floor heating industry.Speed up the development or the introduction of professional electrical floor heating thermostats, electrical floor heating special power-saving
At present domestic electrical floor heating industry selection of thermostat, most of the water heating system in the common room-thermostat. This is not a professional practice, the presence of surface temperature is difficult to control, warm comfort will worsen the shortcomings. If the ground is overheating will cause deformation, the tariffs for heating the floor has risen considerably.
Should you by doing the following correct matching electrical floor heating with thermostat:
1. choose a type of ground temperature probe temperature, the temperature controller with double temperature double control thermostat you better energy saving effect.
2. should the ground temperature-temperature controller with up to 35 ° c temperature limit.
3. the selected temperature controller should have a one-week scheduled programming features.
4. Professional version thermostat will usually be several comfortable or energy-saving mode press the design on the Panel, so that normal consumers can be simple, straightforward, easy operation, while significantly reducing the running of electricity.
At present, domestic electrical floor heating above 5 is suitable for such a requirement of professional thermostat products also, should speed up the development or introduction, completely change the domestic electrical floor heating energy consumption is higher, better popularity and spread of electrical floor heating.
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