3 The Construction of the Native Land-Gas Ground Source Heat Pump Demonstration Class in the United States After repeated screening and sufficient demonstration, the Ministry of Science and Technology and the U.S. Department of Energy have selected three units, Beijing Branch Energy New Technology Development Company, as three geothermal pumps Promotion units, respectively, responsible for the three soil - gas-based ground source heat pump technology demonstration project construction and promotion. With the leadership and full support of China's Ministry of Science and Technology and the vigorous assistance of the U.S. Department of Energy, three demonstration projects of geothermal pumps were successively completed in the first half of 2001 and began trial operation. Three US soil-gas geothermal heat pump demonstration project: 3.1 Northern China winter cold climateric geothermal heat pump demonstration project Project Name: Beijing Jia Heyuan International Apartment Geothermal Source Heat Pump Demonstration Project Address: Xiaoyun, Chaoyang District, Beijing, China Road 32 Project Technology Promotion Unit: Beijing Branch Energy New Technology Development Company Project Housing Development Unit: Beijing Fuyang Property Development Co., Ltd. Heat Pump Installation Completion: December 2000 Project Profile: · Building Type: Upscale Apartments · Building Structure : Consists of three towers of Siamese buildings, respectively, 30-32 layers. The first floor and the podium part of the clubhouse, hall and public activity area, the second floor for the equipment conversion layer, more than three floors for office space and apartment buildings. Three floors underground include equipment room and underground garage. Residential from 75m2 to 365m2 a total of 16 species · Building area: 14175 square meters · Total construction area: 88000 square meters · Heating and air conditioning area: 70000 square meters · Heat exchange three: 1300 tons · Heat pump type: soil-gas type Ground Source Heat Pump · Underground Heat Exchange Form: Groundwater · Ground Source Heat Pump Unit Quantity: 501 Units · Geothermal Pump Unit Manufacturer: Trane Company · Deep Well Number: 4 ports, 2 wells · 2 wells deep: 160 meters · Well Tubing Diameter: 500mm · Single and water inflow: 200t / h · Airflow Organization: Use upper (side) to send back or upper (side) to send back the door to reduce the area of ​​occupied space · Noise level: A small room, the wall attached with sound-absorbing material, the door adopts sound-insulated door; Horizontal machine assembled in the sound-absorbing ceiling, surrounded by walls with a sound-absorbing material, unit sent back to the duct are equipped with anechoic plenum or use Noise reduction duct (fiberglass duct), so that the room noise ≤ 30dB (A) investment and initial operating costs Conclusion: Ground source heat pump system than the traditional central air conditioning system total investment decreased by 1.5% to 389,000 ; 43.6% reduction in annual operating costs, as 116.l million; covering expenses reduced by 50% to 437,500 yuan. Ground source heat pump system, the average initial investment of about 360 yuan / square meter. Operating costs of various heating methods in Beijing comparison: According to the April issue of this year's report, the preliminary calculation of every heating season (125 days) in Beijing in the construction of a square meter of various heating costs: 30-40 yuan independent gas heating stove; cable floor Heating 20-25 yuan; electric film heating 20-34 yuan; natural gas heating 28 yuan; coal-fired central heating 16 yuan; Beijing Geothermal Pump demonstration project preliminary estimates 12.9 yuan. It can be seen from the lowest cost of heat pump operation. 3.2 Central China summer hot, cold winter climate zone geothermal pump demonstration project Name: Ningbo Younger Industrial City ground source heat pump demonstration project Address: Ningbo, Zhejiang Province, China Project features: Yu Dong building cooling and heating project weight: Building area 92505 M2 Total cooling load: 2483 tons Cold water system type: groundwater-ground source heat pump system Project budget: 25 million yuan, of which about 1.34 million US dollars of imported equipment Technology promotion unit: China Enterprise Group Shanghai Dingda new energy technology Development Co., Ltd. Project Progress: Staged construction. The first phase of the 38,380 square meters of garment factories, the installation of 150 heat pumps, 1070 tons of cold, imported equipment worth 420,000 US dollars, in May 2001 installation is completed. The second installment is in progress. Heat Pump Unit Manufacturer: Tane Corporation 3.3 Geothermal Pump Demonstration Project in South China Subtropical Climate Zone Project Name: Geothermal Pump Demonstration Project of Guangzhou Songtian Technical College Project Address: Zengcheng District, Guangzhou, Guangdong Province, China Construction Type: Teaching Building, Office Building Project Features : Refrigeration, supplemented by heating Project Scale: Total Floor Area 52,000 m2, Total Construction Cooling Load: 2045 tons Cold System Type: Horizontal Pipeline plus Groundwater-Ground Source Heat Pump System Project Budget: 14.74 million yuan , Of which 1,256,558 US dollars imported equipment Technology promotion unit: Guangzhou Lida Heat Pump Technology Co., Ltd. American heat pump manufacturer: Florida Heat Pump Environmcntal Equipment Company first phase heat pump installation completed time: October 2000 the first phase of the project profile: · Housing Type: Teaching Building · Building Area: 6,000m2 · Cooling Area: 3,250m2 · Number of Geothermal Pumps: 48sets · Depth of Field: 43m · Volume of Water: 38T / Hour · Circulating Water Volume: 113T / Hour · Total Cost: 2.43M RMB Average cost: 405 yuan / square meters of building operation test ( Voice studio as an example) · Outdoor temperature: 32.3 ℃, sunny and sunshine · Classroom area: 150m 2 · Number of people in the room: 53 people · Unit configuration: 5 tons of cold and 3 tons of cold water Cold ton · Test period: 2:30 pm-4:15 pm · Operating conditions: boot 10 minutes, room temperature 30 ℃ Boot 20 minutes, room temperature 26.5 ℃ Boot 30 minutes, room temperature 23.6 ℃, after the stay at 23.6 ℃ · Indoor maximum temperature difference: Plus or minus l ℃ · The total power of two heat pumps: 6.29KW At present, the three US soil-one geothermal model demonstration project in addition to Beijing geothermal pump demonstration project has been completed, the other two completed only the first phase of the project, follow-up project Will be completed in the next year. 4 Next Step Three American soil-gas ground source heat pump
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