Details Of The Solar Hot Water Project In Kunming Dianzhong New Area Medical Industrial Park​

As a national - level new area prioritized by Yunnan Province, Kunming Dianzhong New Area focuses on strategic emerging industries such as medical and health care. The Medical Industrial Park, serving as the core carrier for the agglomerated development of the regional medical industry, has integrated the concept of "green, low - carbon, efficient and energy - saving" throughout its planning and construction from the very beginning. In the context of medical services, hot water supply is a crucial infrastructure that guarantees the daily operation of medical institutions, patient care, and the daily life of staff within the park. Its stability, safety, and energy efficiency are directly related to the overall operational efficiency and sustainable development level of the park. Based on this, the Kunming Dianzhong New Area Medical Industrial Park launched the construction of the solar hot water project at the end of 2019. The project was successfully installed, commissioned, and officially put into use in June 2020, providing a solid energy guarantee for the development of medical services in the park.

In terms of project scale, with the core goal of "meeting the centralized hot water demand of the park", this solar hot water project is designed to supply 90 tons of hot water per day. It can cover various areas within the park, including the outpatient buildings, inpatient departments, staff dormitories of medical workers, and supporting service rooms of multiple medical institutions. According to the standard of per capita daily hot water consumption in the medical industry, the daily supply capacity of 90 tons can meet the daily hot water needs of approximately 1,500 inpatients, 500 medical staff, and 200 park workers. It covers diverse scenarios such as patient washing, ward cleaning, preliminary disinfection of medical equipment, and medical staff bathing. This completely solves the problems of "imbalance between supply and demand and high costs" under the traditional hot water supply mode, laying a solid foundation for the orderly development of medical services in the park.

In terms of technical selection and system design, the project fully takes into account the climatic characteristics of Kunming Dianzhong New Area and the special needs of the medical industry, adopting a composite energy supply mode of "solar heat collection + auxiliary heating" to balance energy efficiency and stability. Kunming has abundant solar energy resources, with an average annual sunshine duration of over 2,400 hours. The project uses high - efficiency flat - plate solar collectors, with a total area of more than 800 square meters. The inclination angle of the collectors is precisely designed to 30° based on the local latitude, maximizing the solar energy absorption efficiency. Under sunny conditions, the contribution rate of solar energy can reach more than 75%, significantly reducing the consumption of traditional energy sources. Meanwhile, considering that Kunming has more rainy and overcast days in winter with insufficient sunlight, the project is equipped with a gas - fired auxiliary heating system. When the temperature of solar heat collection is lower than 50℃, the auxiliary system starts automatically, ensuring that the outlet temperature of hot water is stably maintained between 55℃ and 60℃. This fully complies with the strict standards for hot water temperature in the medical industry and avoids the impact of water temperature fluctuations on the quality of medical services.

During the project implementation process, the construction team strictly followed the construction specifications of the medical industry, balancing the project progress and the normal operation of the park. Before construction, technical personnel conducted on - site surveys of the hot water - using areas in the park, optimized the pipeline laying routes, and adopted polyurethane insulated pipes with excellent thermal insulation performance to reduce heat loss during hot water transportation. During the construction period, a "zoned and off - peak construction" strategy was implemented to avoid the peak hours of medical treatment in medical institutions, minimizing the interference with patients' medical treatment and medical staff's work. After the installation of the equipment, the team conducted a 15 - day trial operation and commissioning, repeatedly testing key indicators such as solar heat collection efficiency, auxiliary heating response speed, and hot water supply pressure to ensure that all parameters met the design standards. Finally, the project passed the completion acceptance and was officially delivered for use in June 2020.

Since the project was put into operation, it has won wide recognition from the medical institutions in the park due to its stable performance and significant energy - saving effects. From the perspective of operation data, the project can produce approximately 32,850 tons of hot water annually, among which the heat contributed by solar energy accounts for more than 70%. It saves about 21,000 cubic meters of natural gas consumption and reduces carbon dioxide emissions by approximately 56 tons each year. This not only reduces the hot water supply cost of the park by nearly 30% but also helps Dianzhong New Area achieve the "carbon emission reduction" target, practicing the concept of green park construction. In addition, the project adopts an intelligent control system, through which staff can monitor information such as the water level and temperature of the hot water tank and the working status of the collectors in real - time on the backend. This enables "remote control and fault early warning", greatly reducing the operation and maintenance costs and ensuring the continuity and safety of hot water supply.

As a typical case of green infrastructure construction in the Kunming Dianzhong New Area Medical Industrial Park, this solar hot water project not only provides a reliable energy support for the medical services in the park but also explores a integrated development path of "clean energy + medical scenarios". In the future, with the further expansion of the medical industry in the park, the project can be expanded and upgraded by adding more collectors and optimizing the control system. It will continue to inject impetus into the green and low - carbon development of the park and provide replicable and promotable practical experience for the application of clean energy in the medical industry of Yunnan Province.