Weak current College】 【solar building-saving housing construction is an important way of.

Summary: this article discusses the definition of solar architecture and its significance in residential construction, explores the influence of solar energy in the construction of residential construction development of the relevant factors, pointed out that Sun can saving building will become an important way of residential construction. Keywords: solar building-saving housing

As China's economy and living standards of sustainable development, energy and environmental problems, has become a harmonious development of the Chinese economy. China's accession to the Kyoto Protocol to the Treaty, the Central Government for energy saving in the residential attaches great importance to the first renewable energy law introduced in advance, and more information indicates that China's residential construction and related energy issue has become a global issue. Solar building energy consumption will be adjusted residential building structure, ensuring energy security, reducing greenhouse gas emissions, prevent the air environment, rural and remote areas used to enhance the quality of life, and promoting and implementing housing industry the areas of policy had a positive impact.

1. definition of solar building

Conventional solar building means has been designed to direct use of solar energy for heating or air conditioning of buildings. More mature through the-thermal use of solar energy, in winter on the indoor air for heating of the solar heating buildings, active and passive is generally divided into two broad categories.

As the technology of solar energy, solar energy buildings from the architectural development of solar heating to integration PV, solar hot water, solar absorption refrigeration, solar ventilation, controllable natural lighting and other new technologies of building, its technical content better, meaning more abundant, ease.

Ecological building, green building, energy-saving construction, low-energy building, healthy building and our housing pilot project, and so on, pay attention to the use of solar energy. Accurate definition of solar architecture is difficult, but from the international and national research and practical experience, solar building (SolarBuildings) should at least contain the following several levels of meaning:

Solar building's goal is to make full use of solar energy as much as possible to meet energy consumption and health needs of the environment, reduce energy consumption in buildings in conventional energy sources; in

Implementation of solar building is this life cycle and should be reflected in the building planning, design, construction, use, maintenance and modification, and other activities;

Solar building of promotion should be suited to local conditions, for regional climate characteristics, as well as developed building characteristics and other factors, the use of appropriate construction technologies and solar energy technologies;

The development of solar architecture should be based on integrated, multi-angle comparison, including eco-design, construction and energy-saving and investment balances, combined with other renewable energy sources, select the matching of conventional energy sources, etc.;

Study on solar building is growing, not only including the application of the theory and calculation methods should also be energy efficiency evaluation, project monitoring, and other aspects.

Obviously, to solar energy in buildings use less energy in proportion to define solar building is consistent with community and technology development. The present study was not extensive, ongoing solar building measurement and evaluation system of work is clearly very necessary.

China in the field of solar building long-term, active research and practice. All levels of Government, solar enterprises, research institutes, design units, as well as developers of different interest groups in different dimensions, different industries, different range has done a great deal of painstaking work. One of the most mature technology, the widest range of applications and industry development is the most prosperous household solar water heater (systems), passive heating (solar house) and passive ventilation technology, and has been providing energy and alternative fossil fuels has played an active role in solar energy products (systems) of production enterprises, engineering and systems integration business, research and development unit for this purpose made remarkable contributions, but also that cross-industry, cross-domain applications are particularly urgent.

2. solar building concept

Efficient use of solar energy in residential building complex energy system to meet the needs of residential functions as well as safety, convenience, comfort, health and environmental requirements, is the goal of developing solar building. Therefore, solar-thermal building not only concern, PV and other modern technology and the harmonious application of residential buildings, and more concerned about the spread of ecological design concept and the traditional concept of the passive solar building.

A full range of passive design concept means the use of special equipment, which is the use of radiation, convection and conduction of the heat naturally flowing through the building, and through building their own performance control the flow of heat energy, resulting in heating or cooling effect. Its remarkable features is that the building itself as the system's components, not only reflects the characteristics of the local climate and adaptation to the natural environment and takes full advantage of the potential of the natural environment, with the aim of a comprehensive solution to the problems inherent in building design. Including:

Maximum use of natural lighting, artificial lighting energy consumption reduction, improvement of indoor luminous environment to meet the physiological and psychological health needs.

Make full use of and control of residential solar environment, ensure that the room microclimate for health, the improvement of living and improve comfort. For example, uses the sunshade design to reduce the hot summer sunlight (to Shenzhen area of building energy simulation tests show, sunshade can reduce summer air conditioning energy consumption 23-32 per cent); follow the passive heating design, able to take full advantage of cold winter sunlight and radiative energy; create pleasant architectural lighting environment to inner box and respect the biological rhythm of the human body; and so on. Application of the most active shading facilities can achieve the above objectives, but also be able to create rich architectural texture image.

Improve the greening rate, reduce hard ground. Summer residential environment temperature rise time, building energy consumption increased by 10 per cent of refrigeration soThat reasonable planning not only to ensure reasonable progress towards building and spacing, to guarantee the settlements of greening rate and green uniform, so as to achieve a sunshade, lower ambient temperature. In addition, deciduous trees in winter and summer, settlements of reasonable design, similarly changing the construction of external heat environment. Therefore, the return to nature's landscape landscape susceptible to market in hot pursuit.

Strengthening the heat insulation of buildings, this is a modern residential building full utilization precondition of solar energy, but also to create a comfortable and healthy indoor environment.

Optimize building layout, improved settlements wind environment quality, achieve good ventilation in summer. In winter, settlements local maximum wind speed not less than 5 m/s, the pressure difference before and after the building is not greater than, less cold air permeability 5Pa.

Take full advantage of the natural ventilation of indoor air is excluded, to improve the indoor environment, the sponsor and the psychological needs of natural interaction. As a result of residential construction depth of lighter, more use of natural ventilation air pressure. obtained

A full range of passive design methods also include the residential roof shape and material selection, the roof and basement ventilation construction, wall materials and properties of controls, roof cooling, etc.

The use of solar thermal, photovoltaic technology in addition to providing a stable supply of domestic hot water, refrigeration and heating and electricity supply, it should also be provided for the residential environment of "duty". Such as the use of automatic operation of solar air heating technology, you can ensure no one living room basic environmental quality. Of course, including wind power, geothermal and other renewable energy applications from more areas that can be summarized to the application of solar energy. For example, a collection of surface and shallow 47 per cent of the amount of solar energy, thus becoming a huge solar collector.