Beijing property market has always been regarded as a place where various concepts are flying all over the sky, which to some extent reflects the bad tendency of Beijing real estate developers to "pay more attention to marketing than quality". Recently, with the country's emphasis on energy conservation, environmental protection and technology-based housing, some real estate developers began to frequently speculate on so-called "constant temperature and humidity", "zero energy consumption" and "farewell to the era of air conditioning and heating" to attract consumers' attention. A few days ago, experts from China Institute of Building Science and other institutions questioned the above-mentioned "science and technology stunt".
A few days ago, an industry forum called "Improving Housing Quality" was held. This forum is sponsored by China Institute of Building Science, and co-organized by Real Estate Exhibition Weekly and Sina Real Estate Channel. Several authoritative experts who participated in the forum mentioned the principle of "science and technology are people-oriented", and opposed to using "science and technology house" as the label of real estate developers' marketing hype, especially against some real estate developers misleading consumers in the name of science and technology and taking the opportunity to raise prices to achieve their high profits.
Constant temperature and humidity make the house a closed "box"
When talking about the concept of "constant temperature and humidity" rising in recent years, Zeng Jie, vice president of China Institute of Building Research who attended the forum, first pointed out that "constant temperature and humidity" has a strong advertising flavor. She believes that "constant temperature and humidity", as a concept, first appeared in industrial plants and hospitals, and it is a place with strict requirements on temperature and humidity. Put it in the house, people who usually live don't need it.
On the other hand, Zeng Jie further explained, "We know that the air conditioner should be turned on at least 26 degrees in summer, and the heating temperature at home in winter is 18 degrees, which means that there is already a temperature difference of 8 degrees between 18 degrees and 26 degrees. Does the constant temperature erase all the 8-degree temperature difference? It brings waste. So I don't think the' constant temperature and humidity' on the market now is the' constant temperature and humidity' in the strict sense. If the pure sense of' constant temperature and humidity' is absolutely inappropriate, it is inappropriate from the perspective of energy saving and need. "
An expert once seriously pointed out that a villa with constant temperature and humidity gives people a feeling of a closed box, which lacks enough humanity and will not actually bring comfort to people living in it.
Constant temperature and humidity technology has its own shortcomings.
Coincidentally, according to media reports not long ago, Shi Yonggang, an engineer at the Air Conditioning Research Institute of China Institute of Building Science and Engineering, further pointed out some disadvantages of applying "constant temperature and humidity" to villas. He said: "Constant temperature and humidity technology is to use the top plate of the first floor and the top plate of the second floor as water pipes to provide constant water temperature and ensure heating in winter. According to scientific principles, cold air sinks and hot air drifts upward, so heating in the basement cannot be guaranteed. The temperature of the whole air conditioner is also very poor and unscientific.
According to the reporter's understanding, villas with "constant temperature and humidity" technology have great restrictions on the decoration standards and diversity of villas.
Liu Liang, a senior engineer at Jianyan Architectural Design and Research Institute of China Academy of Building Research, said: "At present, the technology of constant temperature and humidity is not very mature. What should I do if there is something wrong with the pipes in the concrete? If the pipeline leaks, it is very troublesome to cut the floor and replace the damaged pipeline. In addition, it is not clear which part is damaged. In addition, it is hard to say whether the service life of this pipeline conforms to the service life of the building.
Previously, another person who is also engaged in building structure research also expressed his concern through the news media: generally speaking, the construction level is still relatively extensive. Once the pipeline moves outward, it will break accidentally, or there will be water leakage and rust during construction. Such a building or a floor can't supply water, especially in the early stage of water seepage. Because of the short distance between the steel bars in the structural floor, it is very likely that corrosion will affect the safety of the structure, and finally something very worrying may happen.
Is a constant temperature and humidity environment suitable for living?
Liu Liang believes that constant temperature and humidity should be changed to "keep Wenny moist", which is a relative balance. If you blindly emphasize "eternity", this is advertising hype! Liu Liang said that in summer, when the room temperature is 26 degrees Celsius and the humidity is 50%, we feel more comfortable. In winter, it is 18 to 20 degrees Celsius, and the relative humidity is about 40%, so we feel more comfortable. Balance and humidity are widely used in Europe, but they are not called balance and humidity in Europe. The so-called "farewell to air conditioning and heating" is not rigorous. Say goodbye only to air conditioning and heating costs.
Zeng Jie emphasized that constant temperature and humidity seems unnecessary for home life. "The change of the four seasons on the earth is the greatest gift from nature to mankind. How boring our life would be if we didn't have the changes of the four seasons. Constant temperature and humidity refers to a small artificial environment created in a small area, which we don't need. "
Faced with various scientific and technological concepts flying all over the sky, ordinary consumers are often at a loss. A netizen once mentioned that if children stay in a "constant temperature and humidity" environment for a long time, will they have a "greenhouse effect" or will they be afraid of seeing the light outside? In this regard, some media quoted the attitude of many experts as-"I am afraid so. White-collar workers in some office buildings suffer from air-conditioning disease because their immunity can't adapt to external changes. Constant temperature and humidity technology should be more accurate than the normal air conditioning system now. Relatively speaking, it can make the indoor and outdoor environment more different, so it will test people's adaptability and immunity!
The reporter thought of a real estate in Beijing with the topic of "how dinosaurs became extinct". Indeed, the once powerful dinosaurs finally died out on our earth. Dinosaurs died out because they didn't adapt to environmental changes. So, what about us humans?