Analysis on the development of solar LED lamps

Based on the thinking about the current situation of low-carbon energy and inspired by the rich local solar energy

resources in Panzhihua. Taking the sunny city Panzhihua as an example, this paper briefly describes the use of solar energy, aiming to raise many problems in the use of low-carbon energy. Lamps At present, countries around the world are actively developing various new energy sources and energy-saving technologies, such as wind energy, mixed fuels, ethanol, solar energy, hydrogen energy, wave energy generation, underground energy, garbage gas, etc. After retiring, former President Jiang Zemin also proposed in his article "Thoughts on China's Energy Issues" that he hoped that the national level would increase its attention and investment in many emerging energy fields such as nuclear energy, wind energy, and solar energy.

1 Distribution of solar energy resources in China According to the data provided by the International Power Grid , from the distribution of the total annual solar radiation in the country, Tibet, Qinghai, Xinjiang, southern Inner Mongolia, Shanxi, northern Shaanxi, Hebei, Shandong, Liaoning, western Jilin, central and southwestern Yunnan, southeastern Guangdong, southeastern Fujian, eastern and western Hainan Island, and southwestern Taiwan Province have a large total solar radiation . Especially in the Qinghai-Tibet Plateau, where the average altitude is above 4000m, the atmosphere is thin and clean, the transparency is good, the latitude is low, and the sunshine time is long. Lhasa, known as the "Sunshine City", has an average annual sunshine time of 3005.7h, a relative sunshine of 68%, and a total solar radiation of 816kJ/cm2& mid dot;a. 2 Current Status and Analysis of Solar Energy Resources in Panzhihua According to authoritative data from the State Meteorological Administration, Panzhihua is the place with the most abundant heat resources in Sichuan, with sufficient sunshine, an annual sunshine time of about 2838h, a frost-free period of more than 300 days, an average annual temperature of 20.6 degrees, and often sunny even in winter. It is one of the best regions in the country for the development and utilization of solar energy, second only to Lhasa. 2.1 Panzhihua City's Solar water heaters have become a common choice for residents. Many residents in Panzhihua have installed solar water heaters on their roofs. With the unremitting efforts of the Panzhihua Municipal Government, the proportion of households installing solar energy has reached 40%, making Panzhihua one of the cities with the best utilization of solar energy in the country. However, there are also many problems with the use of solar energy. The light energy device of the solar water heater is generally installed on the roof, which is not very beautiful; the lower floors will also reflect the nearby high-rise buildings, causing light pollution; the exposed water pipes often leak; as the city expands, high-rise buildings are rising from the ground, but most developers do not allow the installation of solar energy devices on the top floor, and many families still use gas water heaters or electric water heaters. In fact, as long as the planning is proper, the planning and construction departments take the lead in unified layout and installation or approval and monitoring installation, the use of solar water heaters can not only alleviate the pressure on the supply of gas and electricity in our city, but also be low-carbon and environmentally friendly. If conditions permit, central solar energy control devices can be installed in a relatively scientific way in some reasonable places based on the building, converting solar energy into electricity and storing it in batteries, and then providing it to corridors, aisles, roads in the community and other public areas and indoor lighting electricity with special diversion devices, which will greatly reduce the electricity consumption of urban life. In the past few years, the Panzhihua Municipal Government has considered using a split-type method to force the use of solar energy in high-rise buildings, so that every old house has one, and new houses should also be equipped with solar energy devices, but due to various reasons, it has not been implemented so far. In addition, solar stoves are also a good way to achieve low-carbon life . They use solar energy to convert into electrical energy or directly into thermal energy, and use electromagnetic or thermal sensitivity to drive heating or even high temperature to achieve the purpose of cooking. 2.2 Panzhihua City's solar lighting facilities gradually came into being. Project Case 1: According to the Panzhihua Daily in July 2006: Panzhihua City Industrial Park Road No. 2 Street Lighting Project. This section of the road is a secondary urban road of Class II, and semi-cutoff light lamps should be used. Since there are fewer vehicles and pedestrians entering the park at night, 294 street lights are required for the entire line to meet the minimum illumination and brightness . The economic benefit analysis and comparison of ordinary lighting and solar lighting for this road section are as follows: In terms of the product itself, solar LED lamps are more expensive than ordinary lamps; the initial investment in high-end solar street lights is 715,000 yuan higher than ordinary street lights, and the cost of medium and low-end solar street lights is similar to that of ordinary street lights. In terms of operating costs, ordinary lamps are significantly higher than solar lamps, and electricity costs and labor costs will become higher and higher. According to the total investment calculation for 10 years (including daily maintenance and power consumption), solar street lights save 35.6675 million yuan compared to ordinary street lights. Project Case 2: According to a report in Sichuan Workers Daily in June 2009: The solar street lights installed on Binjiang Avenue and Bingren Line in Panzhihua City are currently in use. The solar street lights on this road section have also become the focus of public attention. Solar street lights do not need to consume 1 kilowatt-hour of electricity from the power grid to play a normal lighting role. The solar panels on the solar street lights can convert solar energy into electrical energy and store it, and then release the electrical energy for lighting at night or on rainy days.

3 Analysis of Solar LED Lamps

3.1 Analysis of the current market situation of solar LED lamps. Compared

with the booming photovoltaic power generation in the world, China lags behind developed countries by 10-15 years. China's photovoltaic industry is growing at an annual rate of 30%. The 2008 Olympic Games will be held in Beijing. The country calls for the construction of a socialist new countryside and the hard target of a 20% reduction in energy consumption in the next five years. These three factors provide unprecedented business opportunities for the solar industry. In addition, the country's preferential policies for the development and utilization of renewable resources have been implemented. With such a good industrial foundation, the entire society and the country will have a large output with a small investment.

Urban lighting reflects the image of a city and the scientific management of a city. It is a social system project. Solar LED lamps are favored by people for their superior energy-saving effect and humanistic light source lighting control. Their cost-effectiveness is basically the same as that of industrial frequency AC lamps, and they have the characteristics of not damaging the environment and not consuming non-renewable energy. As long as there is sufficient light, there is a market for the development and application of solar LED lamps.

3.2 Development trend of solar LED lamps.

Solar energy development is mainly developing in three directions, namely solar photovoltaic power generation, solar cells and solar water heaters. In recent years, the energy saving of lamps has also developed rapidly. In addition to the commonly used energy-saving lamps, LED lamps have also been developed. LED lamps are cold light sources , which are more energy-efficient than energy-saving lamps. The combination of LED technology and solar energy will surely become the trend of public lamp design in the future.

3.3 Characteristics of solar LED lamps.

1) Low cost: high brightness, low power consumption, low configuration of solar cells and battery packs required, and reduced costs.
2) Long life: The quality guarantee period of monocrystalline silicon or polycrystalline silicon solar modules is 20 years. After 20 years, the battery modules can continue to be used, but the power generation will decrease slightly. The service life of ultra-bright white light LED can reach 100,000 hours, and the intelligent controller has low static power consumption and long service life.
3) Reliable and stable: monocrystalline silicon or polycrystalline silicon solar modules are resistant to typhoons, moisture, and ultraviolet radiation.
4) Unmanned operation: No management personnel are required during operation, and the perfect intelligent control system gives users enough peace of mind.
5) Power supply for more than 10 hours: The system is designed with local rainy weather in mind, and the average excess electricity is stored in the battery to ensure that users have enough electricity for continuous rainy days.
6) The use of solar LED lamps does not require the installation or burial of power lines; does not require the power of the power grid; and does not require a large amount of manpower and material resources for maintenance.

In today's energy shortage, solar energy resources are very worthy of research and development, and have broad market prospects. New energy plus the most energy-saving lamps are undoubtedly a perfect combination. Of course, while we are working hard to develop and use new energy, we should also advocate energy conservation. After all, the cleanest and cheapest energy is no energy.