Case study of 170 square meter Megaray flat panel solar collector project at Hangsi Road Welfare Institute in Liunan District, Liuzhou City 
In the context of pursuing sustainable development and energy conservation and environmental protection, solar energy, as a clean and renewable energy source, has been widely used in various building hot water supply systems. This is a successful project case of using a 170 square meter Megaray flat panel solar collector at the Hangsi Road Welfare Institute in Liunan District, Liuzhou City. 
1、 Project Background 
As a place that provides daily care and services for special groups, hot water supply is an important infrastructure requirement for welfare homes. Stable, sufficient, and temperature appropriate hot water plays a crucial role in the daily life, hygiene, and care of elderly and children in welfare homes. In the past, traditional hot water supply methods may have problems such as high energy consumption and high operating costs. In order to achieve energy conservation and emission reduction, reduce operating costs, and improve the stability and reliability of hot water supply, the Hangsi Road Welfare Institute in Liunan District, Liuzhou City, has decided to introduce a solar hot water system and choose the Megaray flat panel solar collector. 

2、 Advantages of Megaray flat panel solar collectors 
1. High efficiency heat collection performance: The film absorption ratio of Megaray flat panel solar collectors is as high as 97%, which can efficiently absorb solar radiation energy and convert it into thermal energy. Under sufficient lighting conditions in Liuzhou, the heating performance is excellent, reaching 34.49 ℃, which can quickly heat cold water and meet the large demand for hot water in welfare homes. 
2. Good insulation performance: Advanced insulation technology is adopted, and its insulation performance reaches 1.98 ℃, with a total heat loss coefficient of only 4.8w/cm ². Even in low light conditions such as night or cloudy days, it can effectively reduce heat loss, maintain the temperature of hot water in the water tank, and ensure that there is always hot water supply. 
3. Reliable quality assurance: Megaray flat panel solar collectors, household solar water heaters, and central hot water engineering systems have all obtained national authoritative testing reports, and product quality has been strictly inspected. So far, nearly 1000000 square meters of Megaray collectors have been serving customers, and their stability and reliability have been widely verified in the market. 
4. Diversified board core technology: We have diversified board core welding technologies, such as ultrasonic, laser, tube penetration, blowing and expanding, etc. The copper aluminum composite plate core is welded with copper welding rods imported from the United States, which can withstand a pressure of up to 12Kg and has a stability that is more than 20% higher than that of ordinary processes. T2 pure copper tube serves as the medium flow channel, which is hygienic, stable, and corrosion-resistant, ensuring the long-term stable operation of the system. 
5. High transmittance and high-strength glass: Adopting flat plate collector specific textured tempered glass, the transmittance can reach 92-94%, greatly improving the penetration of infrared light waves and enhancing the overall performance of the collector. This type of glass can withstand a static pressure of 750 kg and is not easily damaged during transportation and use. Even if damaged, it will not easily cause personal injury, ensuring the safety of the welfare institution during use. 
6. Environmentally friendly insulation system: The standard plate engineering collector adopts an environmentally friendly EPS glass wool insulation system, with insulation performance exceeding national standards. In specially customized collectors, Megvii integral foam insulation technology can also be used, combined with infrared reflection insulation technology, with insulation parameters close to insulated water tanks, effectively improving energy utilization efficiency and reducing environmental impact. 

3、 Project implementation process 
1. Preliminary survey and scheme design: The professional team of Meigrei conducted a detailed survey and analysis of the building structure, hot water demand, local climate conditions, etc. of the Hangsi Road Welfare Institute in Liunan District, Liuzhou City. Based on the actual situation of the welfare institution, a scientifically reasonable solar hot water system plan has been designed, and the installation position and layout of the 170 square meter flat panel solar collector have been determined to ensure that the collector can fully receive sunlight. 
2. Equipment installation and debugging: Strictly follow the design plan for the installation of the Megaray flat panel solar collector, ensuring that the installation angle and fixing method of the collector meet the requirements, and guaranteeing its stability and safety. After installation, the entire solar hot water system was comprehensively debugged, including pipeline connections, control system debugging, etc., to ensure that the system can operate normally and the hot water supply is stable. 
3. Post maintenance and training: In order to ensure that the staff of the welfare institution can operate and maintain the solar hot water system correctly, Megaray provides professional training services, detailing the working principles, operation methods, daily maintenance points, and other contents of the system. At the same time, a comprehensive after-sales service system has been established, with regular follow-up and maintenance of the system to promptly address any potential issues. 

4、 Project operation effect 
1. Significant energy-saving benefits: Since the solar hot water system was put into use, it has greatly reduced the dependence of welfare institutions on traditional energy sources (such as natural gas, electricity, etc.), reducing energy consumption and operating costs. According to statistics, compared with the traditional hot water supply method used before, it can save a lot of energy costs every year and achieve good energy-saving and emission reduction effects. 
2. Stable hot water supply: The efficient heat collection and good insulation performance of the Megaray flat panel solar collector ensure that the welfare home can obtain stable and sufficient hot water supply in different seasons and weather conditions. Whether it is daily living water or hot water needs for hygiene and care, they can be met in a timely manner, improving the quality of life of elderly and children in welfare homes. 
3. Improving welfare quality: A stable and reliable hot water supply provides strong support for the daily operation of the welfare home, and also reflects the care of the elderly and children in the welfare home. At the same time, the use of solar hot water systems conforms to environmental protection concepts and creates a greener and healthier living environment for welfare homes. 
5、 Project Summary 
The engineering case of using a 170 square meter Megaray flat panel solar collector at the Hangsi Road Welfare Institute in Liunan District, Liuzhou City fully demonstrates the advantages and feasibility of Megaray flat panel solar collectors in large-scale hot water supply projects. The successful implementation of this project has not only brought practical economic and social benefits to the welfare home, but also provided valuable experience and reference for the construction of solar hot water systems in other similar places. I believe that in the future, with the continuous development and application of solar energy technology, Megaray flat panel solar collectors will play an important role in more fields and make