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Qingdao Laoshan Bay Hotel, Shandong Province
Laoshan Bay Hotel in Qingdao, Shandong Province has a total air-conditioned area of 10276 square meters. The hotel section accounts for 3908.3 square meters, and the guest room section accounts for 6367.7 square meters. Daily hot water consumption is 30 tons. Cooling and heating are achieved using fan coil units. The indoor temperature is maintained at 26℃ in summer and 20℃ in winter. Air conditioning and hot water are provided simultaneously.
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The heating area of the chicken coop is 1600 square meters * 12. The length, width, and height of a single chicken coop are: 100 meters × 16 meters × 5 meters. The number of chicken cages is 7 rows × 4 layers. The inlet and outlet water temperatures are 70℃ / 55℃. The water system pipes use the same design. The heat source equipment uses a US Kennedy cascade dual-stage high-temperature heat pump unit. The terminal heat dissipation uses a water-heated hot air blower. The heating heat load of the unit is 120 watts/square meter.
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This project is located in Hainan Tibetan Autonomous Prefecture, an area with a plateau continental climate. It is characterized by a long cold season, short warm and cool seasons, abundant sunshine, strong solar radiation, distinct dry and wet seasons, rainfall and heat occurring in the same season, and frequent nighttime rainfall and strong winds. The average annual temperature ranges from -2.4℃ to 1.4℃, with a maximum temperature of 28℃ and a minimum temperature of -36.3℃. Average annual precipitation ranges from 309.9 to 529.1 mm. Annual sunshine hours range from 2517.6 to 2995.3 hours. Annual radiation per square meter ranges from 5210.2 MJ to 6568.3 MJ. There is no absolute frost-free period.
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Yanqing Water Service Center heating improvement project
Yanqing Water Service Center, heating area 3500 square meters, originally using a 1-ton coal-fired boiler for central heating. The requirement is to replace the original boiler with an air source heat pump, utilizing the existing heating pipes. Considering that the existing heating system is a centralized, asynchronous system supplying heat to three office buildings, the original pipes are relatively small in diameter, and long-term use has resulted in scaling and severe corrosion in some areas, reducing insulation capacity. The pressure capacity of the pipes needs to be diagnosed, with local repairs and flushing required. A high-temperature, low-flow heating mode is suitable.
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Ordos, Inner Mongolia, has a semi-humid and dry temperate monsoon climate, a grassland climate zone, ranging from the eastern end of Hulunbuir Grassland to the Yinshan River plain. Winters have snow and ice, lasting for half a year, with an average temperature of approximately -28 degrees Celsius.
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46,000 square meters of centralized heating project in Jiaxiang County, Shandong Province
In most areas, as March approaches, the heating season is drawing to a close. During this heating season, the operation and energy consumption of air heating have been, I believe, the focus of market attention. Below, we will focus on analyzing a district heating renovation case in Jining City, Shandong Province. The project was launched in October 2019 and officially put into operation on November 26. As of February 29, 2020, it has been in operation for 95 days, with a total electricity consumption of 974,510 kWh.
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