introduction
With the development of production and the continuous improvement of people's living standards, the demand for electricity consumption in the whole society is on the rise. Saving electricity in the field of building electrical industry has enormous potential. It not only effectively alleviates the contradiction between power supply and demand, but also ensures the sustained, high-speed and healthy development of the national economy. It accelerates the upgrading of equipment and promotes scientific and technological progress while protecting the environment. And the economic benefits are significant. According to the development strategy of “China Green Lighting Project†proposed by China, lighting and energy saving has become an important aspect of energy conservation. Power saving is to promote high-efficiency energy-saving lighting fixtures under the premise of ensuring illumination, improve power utilization, and reduce power consumption. The following is an in-depth discussion on residential electrical energy-saving renovation in terms of illumination, line modification, selection of electric light source, lighting arrangement, lighting control and maintenance management.
1 Reasonable selection of illuminance standards
According to (GBJ133-1990) "Civil Building Lighting Design Standards" residential standard illuminance grading, should be taken as 100-150-200lx, as shown in Table 1 (general case, reasonable to take the intermediate value). In the residential lighting design should be practical, to avoid one-sided pursuit of form. The specified illuminance range value should be realistic and beneficial to energy conservation. Due to the different rooms with the same purpose, there will be large differences depending on the environment. When retrofitting existing residential lighting, first determine the appropriate illuminance according to different locations and different uses. Excessive illumination is not only a waste of electrical energy but also harmful to people's eyes. The illumination is too small, causing inconvenience to life and work, and it is also harmful to people's eyes. Save electricity by meeting the usual illuminance standards.
(1) Room size and shape: Generally, the smaller the area of ​​the room (large), the lower the utilization factor (high). The size and shape of the building have a greater impact on energy conservation;
(2) Interior decoration color: The interior is decorated with white or light colors to increase the reflection of light, which can improve the utilization of light. When a diffused luminaire is used, about 50% of the illuminance on the working surface is reflected by the wall and the top. If dark decoration is used, most of the light is absorbed, and the lighting efficiency is greatly reduced;
(3) Make full use of natural light: In the design, artificial lighting should be minimized during the day, and natural lighting should be used, and the window opening area of ​​the building should be reasonable. The layout and control of the luminaires should be parallel to the windows. On cloudy days, it is only necessary to turn on the luminaires with insufficient indoor illumination.
2 Reasonable choice of lighting
The indoor lighting method should be properly selected. The lighting method is divided into general lighting, local lighting and hybrid lighting. When one light source cannot meet the color rendering requirements, two or more light sources can be used for mixed lighting, which improves the light efficiency and improves the display. Chromaticity.
China's illuminance standard level is based on the size of the visual work observation object. In the high illumination level, different illumination modes can be used for the same level, and the illumination standard is also different. The illumination standard of the mixed illumination mode is set to 750-1000-15001x. The general illumination in mixed lighting takes 5% to 15% of the illumination value, that is, the highest value is 100-150-2001x. Therefore, energy saving with hybrid lighting is remarkable, that is, when the illumination requirement is high, it is not appropriate to use the general illumination method, but should increase Partial illumination. In order to save energy, when using a separate general illumination method, the illumination is ≤ 3001x. Partial illumination is used in many locations, characterized by large working surfaces or large workpiece sizes, requiring high illumination. If local lighting is not available, you can use the general lighting low hanging method, and the energy saving effect is remarkable.
General lighting combined with local lighting. For tall spaces, floodlights or wall lights can be placed on the upper general lighting wall, which is more energy efficient than setting the general lighting method separately.
3 Reasonable choice of wire and cable
Due to the resistance of the wires and cables, the line loss is inevitably generated when the current flows, that is, the loss of active power is generated, and the loss on the illumination line accounts for about 4% of the input power. The main factors affecting the loss of the lighting line are the power supply mode and the cross-sectional area of ​​the conductor. According to the active power loss formula in the three-phase line is as follows:
Shareconn development Co.,Ltd manufacture series flexible flat cables, we can produce pitch 0.5mm,1.0mm,1.27mm, 2.54mm flat cables.
Our factory is qualified with ISO9001:2008, ISO13485:2003 and TS16949:2009 certificates, equipped with high-end automatic production equipment, like automatic crimping machines, automatic wire cutting and crimping machines, automatic crimping and tinned plate machines, etc. Meanwhile, we have our own laboratory to support the testing requirements from our suppliers and 100% checking before shipment. To assure the product and the comprehensive competence, we introduce high-level technical talents and management personnel as well as well-trained staff, and improve ourselves in many ways, like the quality, price, delivery, service, etc. Now, Shareconn has been the best supplier and partner for many customers.
Flexible Flat Cable,Flexible Flat Cable With Connector,Pvc Flexible Flat Cable,Electric Wire Flexible Flat Cable
Shareconn Development CO.,LTD , http://www.share-conn.com