1 further thinking on the development and utilization of energy-saving technologies for green buildings

The application of green building skills and technologies should proceed from China's national conditions, follow the principle of sustainable development, take high and new technology as the leading factor, aim at every link of the building life cycle, and comprehensively embody the concept of "energy saving, resource saving, environmental protection and people-oriented" through scientific overall design.

1. 1 Vigorously develop and utilize renewable energy.

1) solar power generation technology uses solar panels to charge the battery during the day and use the battery to supply power at night. LED solar street lamp lighting pipeline is simple to lay, safe and energy-saving, pollution-free, stable and reliable, power-saving and maintenance-free. It should be widely used in streets and communities. Roof and curtain wall solar panel power generation technology should be used as lighting and backup power supply for commercial and office buildings, which is beneficial to energy saving.

2) North China is rich in wind energy resources. The energy-saving technology combining wind power generation with solar power generation can be used in buildings, and a novel and unique windmill form can be adopted. This not only saves energy and protects the environment, but also beautifies the environment.

3) Geothermal resources are distributed in most areas of China (mainly in the southeast coastal provinces and inland basins), and geothermal wells with a depth of 1000 ~ 3000 m in these areas can obtain geothermal water with a temperature of 80℃ ~ 100℃. At present, Xianyang, Shaanxi and Xiongxian, Hebei have begun to use geothermal resources for residential heating and hot spring bathing. Later, greenhouse planting, aquaculture, agricultural irrigation and industrial utilization can be carried out; The installation of floor heating pipes can also be used in the indoor heating design of building engineering to save energy.

1.2 Increase the design, development and investment of water-saving technologies.

1) At present, the drainage system of many towns in China basically adopts the combined drainage system with end closure. The traditional drainage system not only infects bacteria and pollutes rivers and lakes, but also increases the cost of sewage treatment, so it is necessary to establish a rain and sewage diversion system. If the rainwater and sewage are separated and transported by one pipeline, the rainwater can be directly discharged into the river, and the sewage is collected through the sewage pipe network and sent to the sewage treatment plant for treatment before being discharged into the river. This can not only prevent rivers from being polluted, but also greatly reduce the cost of sewage treatment.

2) Most areas in northern China are short of water and rain, and the utilization of water resources is also an important content of green building energy conservation. In the supporting project of water system, the indoor water supply pipeline should be designed with clean water and reclaimed water. At the same time, a supporting system for rainwater recovery should be designed. The rainwater recovery system uses the rainwater recovery port to recover and transport the rainwater from the site, pavement and roof to the underground reservoir (which can directly provide water for the greening of the community). If conditions permit, a filter pool, a sedimentation pool and a clear water pool can be set on the roof to provide washing water for residents. The system can be used as a part of rain and sewage diversion system and an independent water saving system.

1.3 Application of Land-saving Design Skills in Architecture

1) In the planning and design stage, the concept of building land saving should be strictly implemented, the sunshine standard should be reasonably determined from the perspective of residential areas, the east-west residential buildings should be rationally arranged, and the high-rise tower residential buildings should be arranged with appropriate deviation angles, sporadic land use or sunshine gaps; Arrange high-rise buildings on the south side of urban main roads or public buildings to avoid the influence of sunshine shadow on houses. Under the premise of ensuring sufficient sunshine, ventilation and beautiful environment, it is close to the upper limit of floor area ratio given by the planning department and makes full use of the land.

2) In the architectural design stage, we should consider optimizing the land-saving scheme in improving the architectural design level and skills, such as increasing the number of building floors (using more small high-rise buildings and less multi-floors) and increasing the depth of houses; Use light partition wall to reduce the land area and increase the greening rate of open space. It is also a good land-saving measure to set up basement, multi-storey underground parking garage or multi-storey parking building.

2 conclusion

Popularizing green buildings, saving resources, protecting the environment and reducing pollution in the whole life cycle of buildings is the inevitable trend of global architectural development in the future. However, its initial investment is large and it takes a long time to get results. In addition, some technologies are still in the primary stage, and developers and owners cannot accept more investment, so the development of green buildings is relatively slow. This requires departments at all levels to increase the publicity of green buildings, step up the development and utilization of building energy-saving technologies, and train relevant personnel to gradually adopt and popularize them from point to point, and finally achieve the goal of green buildings.

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