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Guangxi encourages the promotion of "passive" buildings without air-conditioning, warm in winter and cool in summer

Guangxi encourages the promotion of "passive" buildings without air-conditioning, warm in winter and cool in summer

2015-12-17 00:00
(Reporter Xu Qingcheng) Without the air conditioner, the indoor temperature can be kept at 20°C in summer; in case of polluted weather such as haze, the indoor air can be kept clean... "Passive" houses have this effect. A few days ago, the reporter learned from the Housing and Urban-Rural Development Department of the Autonomous Region that the Housing and Urban-Rural Development Department recently forwarded the "Technical Guidelines for Passive Ultra-Low Energy Green Buildings (Trial) (Residential Buildings)" (hereinafter referred to as the "Guidelines"). Relevant persons from the housing construction department of the autonomous region said that our district encourages all regions in the region to launch a number of demonstration projects and demonstration projects in conjunction with the local "13th Five-Year" building energy conservation and green building development plan.
"Passive" rooms do not require air conditioning
For many citizens, "passive" architecture is a new term.
 According to the introduction, "passive" buildings are also called "passive" ultra-low energy houses, passive houses, etc. It is a brand new energy-saving building concept. Experts from the housing construction department explained that, in layman's terms, this kind of building can achieve a comfortable indoor temperature only by relying on its own structural design without installing air-conditioning, heating and other facilities.
Where is the secret of low energy consumption in "passive" houses? According to experts, the wall of the "Passive House" has an excellent thermal insulation layer. The windows of ordinary houses will condense and freeze in winter, but the windows of passive houses do not. The airtightness of the "passive house" is also very good. The house is wrapped tightly. Due to the thermal insulation and energy-saving heat dissipation system during construction, the house can be used in hot summer or cold winter. Allow the room to reach a comfortable temperature requirement. Coupled with a relative humidity of 40-60 and a constant temperature set by themselves, citizens living in a "passive house" will be more comfortable.
is more energy efficient than traditional "active" rooms
Compared to houses that use electricity, coal, gas and other "active" heating/cooling technologies, passive houses mainly rely on non-energy-consuming "passive" thermal insulation technology to maintain a suitable living temperature inside the house. For example, in winter, where does the heat come from? Experts explain: sunlight; heat from home TVs, refrigerators, washing machines, electric lights, computers; cooking a meal, taking a bath, including heat from our body, etc. These are all heat sources. Under strict heat insulation and sealing, all scattered heat sources in the house are recovered, and the recovery rate exceeds 75%. "Passive" houses are not only suitable for residential buildings, but also for office buildings, schools, kindergartens, gymnasiums, etc.
According to experts, the annual heating and cooling demand of “passive” buildings has been significantly reduced, and the building energy saving rate in severe cold and cold areas has reached more than 90%. Compared with the current national energy-saving design standards, heating energy consumption has been reduced by more than 85%. In terms of comfort, it has Good air tightness and sound insulation effect, and the indoor environment is quieter.
   Encourage all localities to launch demonstration projects
   At present, Guangxi is still blank in terms of "passive" architecture.
   According to reports, our district possesses relatively mature technical conditions for solar energy and ground source use in terms of building energy conservation. "Compared with the existing energy-saving standards, the construction cost per square meter of passive houses has increased a lot, but in the long run, its energy-saving and emission-reduction effects are particularly good, and the cost of use will be greatly reduced." As for the prospects of passive buildings in Guangxi, experts Said that this is a major trend in building energy efficiency.
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