Energy-saving and heat-insulating and can be grown

Energy-saving and heat-insulating and can be grown

3:04 AM

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Environmental Information Center / Li Yuqin (May 28, 2018)

Summer is hot, and the three-dimensional greening and green the roof of the building is an effective way to reduce the temperature and energy saving inside the house. Studies have shown that setting a green roof can cool the room by about 2.5 degrees. In order to reduce the urban heat island effect and start energy conservation and carbon reduction from the building, the Kaohsiung City Government, in addition to enforcing the construction of new buildings through the regulations encourage the public to green the roof of the existing buildings and provide subsidies for the green roof renovation.

This year's subsidy program has begun to accept applications. Not only public buildings and apartment buildings but also the roof of ordinary houses can be applied for greening improvement. The highest subsidy will be 49% of the greening improvement project, the maximum subsidy for ordinary houses is 100,000 yuan, and the public building is 800,000 yuan.

In order to provide a reference for setting up green roofs and applying for subsidies in the public, the Works Bureau held a green roof lecture sharing meeting on the 27th to share the experience of the people and let the citizens who intend to renovate their roofs understand the problems that may arise in the related projects and apply for subsidies.

Structural identification and waterproof testing before setting the green roof

Hong Lihan, a citizen who lives in the Lingya District, converted the roof of the Tianzhu, which was originally planted in plants, into a 12-pyeong roof garden. She applied for the city subsidy, which cost a total of 240,000 yuan. She said that the top floor of the renovation was obviously cooled. The family members rarely went up to the top floor. Now they often go upstairs to grow vegetables, and they can also harvest their own vegetables, tomatoes, lemons, etc. "It is equivalent to increasing the leisure space of one floor with the current market price of one ping."

People worry that setting a green roof will affect the building's weight and safety, and it will also cause water leakage inside the house. Hong Lihan reminded me that it is necessary to pass the structural technician identification and waterproof test before setting the green roof to determine the flawlessness. "For houses over 20 years, structural technicians should be asked to identify the building load. If the waterproof layer has not been renovated in 10 years, it should be redone to avoid leakage of water inside the house."

The Works Bureau said that the basic repair of the building is not covered by the green roof. Therefore, the public must first complete the measures such as structure and waterproofing and then apply for the subsidy for the green roof renovation.

Current building technology and equipment make it easier to manage green roofs. The use of light soil in the soil can reduce the load on the roof. If it is necessary to plant trees with deeper soil layers, it can be planned to be near the pillars of the building. To reduce the water consumption of plants, rainwater recovery systems or water storage and drainage boards can be used. It can be used to water the plants after collection; it can also be set up with an automatic watering system, and the plants can grow better with regular watering.

Hong Lihan said that in order to successfully renovate her own green roof, she has done quite a lot of homework, studying the orientation and season of various plants according to the weather and sunshine, as well as fertilizer management, as well as assessing the pests and diseases of various plants, selecting plants with fewer pests and diseases, let The landscape of the a roof garden can be maintained for a long time, and it is less susceptible to setbacks.

The whole family will do it together to create a fish and vegetable symbiosis roof garden.


Another citizen, Shen Yi, transformed his roof into a roof garden with fish and vegetables. He did not entrust the landscape design company to design and construction. Instead, he designed and built it with his family. He set up high-grade vegetable and a net room with steel frame and potted plants and used water from the culture of Wu Guoyu and Nile redfish. , grow corn and vegetables, strawberries, etc.

The tall dishes are convenient for the elderly to take care of the plants, the soil and the water to be poured are not allowed to fall, and there is no problem with the building leaking. He said that the roof equipment that was designed and rebuilt by itself cost more than 100,000 yuan. The parents and family members do not charge for hands-on participation. However, after setting the green roof, the family members have to increase the fun of interaction, and there is also endless peace of mind vegetables. The fish also have to eat.

A bird's eye view of Kaohsiung from the sky, the roof greening of the building has improved the city's appearance and also provides an ecological island hopping function for the urban ecosystem. The Works Bureau pointed out that the three-year green roof subsidy of Kaohsiung buildings has reached 300,000 square meters, equivalent to the total carbon absorption of 15 Daan Forest Parks in one year.

In order to strengthen the function of the ecological island hopping, this year, priority will be given to subsidizing the surrounding areas of the wetland park, as well as the green roof of the building around Zuoying Xinguang Guoxiao, the former Jinguozhong and Sanmin District Administrative Center, and Kaohsiung Medical University. According to the Works Bureau, these buildings are public green roofs that have been built in the past three years. It is hoped that the surrounding areas will be planted with honey plants, allowing insect birds to have more inhabited spaces.

The first experimental high school dedicated to energy architecture in Taiwan: training young architects in Taiwan, using education to make German energy-efficient buildings take root in Taiwan

In the sultry summer solstice, the first experimental high school in Khlong, the experimental high school of Khan's construction experiment, was announced. It will start in September this year. This experimental school will work with relevant German institutions to train artisans who can personally build energy-efficient buildings.

Khan’s Construction Experimental Education Institute enrolls graduates from the country and will undertake a three-year course that will include German, design, construction techniques, and implementation, energy construction, building construction and expansion, and structural design and implementation. Core competencies. The class is mainly in Taipei City and Taoyuan City. It is expected to enroll 43 students. The head of the agency, Hu Xiangling, said that more than 30 students have signed up and continue to welcome interested students to contact them.

Founded in 2004, Khande Institute is a non-profit organization jointly organized by German and Taiwanese people. It mainly promotes cooperation in building houses, energy buildings, and citizens' energy autonomy.

"How does the German sun house practice in Taiwan?" Hu Xiangling said that after the publication of the German energy building in 2006, they also launched their own work and completed the "Taipei City" in Taipei Youth Park in 2010. Library Sun Library, the first floor is a wisdom library without librarians, and the second floor is an energy-saving exhibition hall.

Hu Xiangling said that this building is a "sun house" that integrates active and passive use of solar energy. It is not only warm in winter but also cool in summer, saving more than 80% of energy. In 2017, it achieved more capacity than energy consumption, and became a zero-energy, zero-release energy “positive house”. The future is also one of the teaching fields of experimental educational institutions.

Zeng Xuzheng, deputy chairman of the China Development Association, was born in architecture. When he attended the opening press conference, he said that the current architectural education really needs to be reviewed. The Khan Experimental School will stimulate the current changes in the university architecture. Architectural education can no longer only teach students to build new houses from a piece of white paper. More challenges are to improve existing houses.

Zeng Xuzheng believes that Khan’s students may have the advantage if they want to continue their studies in the future. At present, some universities’ construction departments have begun to emphasize implementation. They hope that when they enroll, they will find new students who have enthusiasm and understanding of the building. The students in the first year of the year did not adapt. In the first year, they spent a lot of effort into counseling and referrals.

Zeng Xuzheng sighed. Recently, Chen Meijun, the chairman of the China Development Association, went to Germany to inspect and hoped that Taiwan would have more "green buildings without air-conditioning", but it was distorted to prevent people from opening air at home and missed better discussions. According to him, energy conservation should start from the front end, not only using energy-saving electrical appliances, but also improving the building envelope; but the current policy driving force is not enough, and the civil consensus is not high.

Martin Eberts, director of the German Association in Taiwan, who attended the opening ceremony, pointed out that Taiwan is actually more qualified to develop green energy and energy-efficient buildings than Germany, and related technologies are actually there. However, Zeng Xuzheng pointed out that the current field of architectural design is not very energy-conscious. For example, when a student makes a model, he is asked what kind of wall is made of white cardboard. He may only think of a wall, but there is no Think of how to achieve the high temperature and humidity of Taiwan's climate. However, Germany has guided the regulations and reminded them to consider these issues when designing houses.

Ou Bozhe said that Germany's building energy management policy is to use sticks and radishes, and the regulations are strict, but also provide concessional loans and other assistance. The German building has an "energy passport", which allows the buyer to know how much money it needs to spend on energy in the future, and whether the house is energy-efficient or not. Zeng Xuzheng added that Taiwan needs to consider factors such as typhoons and earthquakes compared with Germany. Whether building design considers these problems should also be included in the housing certification project.


Source: (Katja News)


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