Low-Carbon Urban Infrastrucure Projects 2


Published on

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Low-Carbon Urban Infrastrucure Projects 2

  1. 1. February, 2012
  2. 2. Lanzhou Rail Transit Construction Construction Project of supporting pipe network ofheat supply of Cogeneration--- “Construct big newplants by shutting down small old ones”, LanzhouThermoelectric Limited Liability Company, StatePower.Po er Lanzhou Renovation Project of Energy Saving for Energy-SavingExisting Buildings Renewable Energies and Constructions IntegrationProjects in Lanzhou j
  3. 3. Lanzhou Rail Transit Construction
  4. 4. Urban Overview of Lanzhou
  5. 5. Urban Overview of Lanzhou
  6. 6. Current Situation and Future Planning of Lanzhou Transport The basic form of Lanzhou urban road network is “district divisionroad network + linking passageways ” and th areas k d t k li ki d the keep th grid the idpattern. The traffic flow shows the situation of “crowed at the director ofeast-west ” and “blocked at the director of south-north”. The narrowestsection f ti forms the “bottleneck” of Lanzhou transport. th “b ttl k” f L h t t The Narrowest Section
  7. 7. Lanzhou Social and Economic StatusLanzhou Social and Economic Index Diagram
  8. 8. Line N tLi Network Planning of Lanzhou Rail Transit k Pl i fL h R il T it
  9. 9. Line Network Planning of Lanzhou Rail Transit Central Urban Area line Network is composed of Line No. 1, LineNo. 2 and Line No. 3 with the totle length of about 90km. There are 67stops in the network. In the planning, Line No. 2 and Line No. 3 formthe framework of the network and run through the central urban areafrom the east to the west. Line No. 3 is the auxiliary line and connectsthe two banks of the Yellow River in Lanzhou.
  10. 10. Short-Short-Term Construction Planning of Lanzhou Rail Transit
  11. 11. Lanzhou Medium-Term Construction Planning Medium- 2021— 2021—2030
  12. 12. Long-Long-Term Construction Planning of Lanzhou Rail Transit
  13. 13. Line Direction Line Direction Plane 16
  14. 14. Station Distribution The short--term plan is to build the part from Chen guanying toDonggang with the total length of about 26.53km, which is underground. gg g g , gThere are 20 stops and 1356m between each stops averagely. Thelongest distance between stops is 2320m and the shortest is 822m. Itplannes to build one depot and one parking lot. 17
  15. 15. Overview of Stations5 transfer stations 1 station at the 3rd floor underground 14 stations at the 2nd floor underground
  16. 16. Overview of Stations
  17. 17. Range Range Structure Underground and Construction MethodsRange Tunnels Underground(Not includeAccess line): 21km Dual System , totlly 20rangesIn 21km, shield method section is 15.5kmwhich takes 75% of the total length. Miningmethod section is 2.5km which takes 12% ofthe total. Open-Cut method section is 3.1kmwhich takes 13% of the total.
  18. 18. Power-Power-Supply System
  19. 19. Project Planning
  20. 20. The short-term emgineering starts the experimental section in July 2011. The Full range of civilengineering starts in October. Th fi t t t run i i O t b 2016 The t i l operation i at th i i t t i O t b The first test is in October 2016. Th trial ti is t theend of December 2016. The total duration is 63 months. July 2011 the Beginning of 2014: Basically complete the civil work July 2013 December 2015: Complete station renovation and mechnical and electronical installation January August 2014: Complete rail track-laying work October 2015: Mmain substations supply electricity. The end of January 2016, sration substation supply electricity. the beginning of March 2016: begin to jointly adjust the system the beginnign of October 2016: the test run. The end of December: the test operation.
  21. 21. Investment Estimation
  22. 22. Financing27.6% of the total funds will be from theggovernment. The other 72.4% will be loaned fron %domestic commercial bank. Next, we will try forthe policy bank funds and reduce the funds cost. policy-bank cost 27.6% from Government 72.4% from loan
  23. 23. Financial EvaluationThe construction period is 5 years. The operation period is 25 years. Theeconomic evaluation caculation period is 30 years. The financial internalrate of return of the Project before tax is 0.63% and 0.54% after tax. Thepayback period (including construction period) before tax is 29.6yearsand 29.7 years after tax The loan would not be paid off during the 29 7 tax.caculation period.As the urban infrustructure, the project is public welfare. From the aspectof the financial status of the project itself, the profitability and solvencyare weak. It needs to raise the proportion of the capital and try for thegovernment subsidies in the preliminary period of the operation.
  24. 24. National Economic Evaluation and Social Evaluation
  25. 25. Construction P j t of supporting C t ti Project f tipipe network of heat supply ofCogeneration--- “Construct big newplants by shutting down small oldones”, Lanzhou ThermoelectricLimited Liability Company, State CompanyPower.
  26. 26. Areal map of heat supplyScope of heat supply: area to the south of Yellow River, east of Pingliang road, Chengguan district, Lanzhou.Heat supply area: 16.78 million m!, Current area: 6.3 million m!, Planning construction area: 10.48 million m!.Heat capacity: 800MW, Annual heating load: 6032532.80GJ, Construction term of supporting pipe network: 2012-2015.
  27. 27. Plan of distribution of heat source to the south of Yellow River, Chengguan district, Lanzhou. Coal-fired: 58 sets, 120 units, total 998 tons. Gas: 78 sets, 140 units, total 500.66 tons.
  28. 28. Current problems• Scope of heat supply of the project is the area to the south of Yellow River, east of Pingliang road, Chengguan district, Lanzhou. The current problems of heat supply in this area are as follows:• A large number of constructions in the area require heating supplies as it is one of the commercial and administrative center of Lanzhou. Coal fired area jointed and scattered boiler rooms Lanzhou Coal-fired area, supply a quite proportion of heat. But due to some of the boiler rooms which are equipped by small sized boilers that have low capacity and low efficiency of dust collection the average thermal collection, efficiency of the boilers is low. And quite a number of boiler rooms only have old equipments and limited space, coal and ash are all leaved in open space near the rooms. In addition, the p p , chimneys of the boiler rooms are mainly made by iron sheet and steel and their height are all lower, together with the laggard smoke prevention and dust control devices, severe air pollution is caused in this area.
  29. 29. Status of the air pollution in the city• Lanzhou is temperate zone with semiarid continental monsoon climate, but the basin terrain of the city proper makes it hard for the air and atmospheric impurity to spread which leads to a special basin climate. spread, climate• Although certain progress has been made in air pollution abatement in recent years in Lanzhou, based on its special geographic environment and worse pollution in the past, the degree of the air pollution is still serious.• In Lanzhou the concentration of the three main pollutants(S02 N02 PMIO) in Lanzhou, heating period are higher than it is in non-heating period. Normally, the average value of the concentration of S02 in heating period is twice more than it is in non- heating period, exceeding by 41% and 0.5% respectively in period of heating and non-heating. The average value of the concentration of N02 in heating period is 1.5 times than it is in non-heating period. It exceeds standards mainly in heating period and takes about 80% of the whole year’s exceeding number. The average value of the concentration of PMIO in heating period is 1.76 times than it is in non- non heating period, exceeding by 80% in heating period, which is 2.06 times than it is in non-heating period. The pollutants of PMIO in heating period still take the dominant position of the whole year. PMIO the primary pollutant, no matter in heating or non heating period always takes the large part and comes before S02 non-heating period, and N02. During the heating period in Lanzhou, the pollution level of the three main pollutants, namely S02 N02 and PMIO is almost doubled than it is in non- heating period, presenting a typical coal-smoke air pollution. Meanwhile, the dust emission of coal-fired boilers in the winter of Lanzhou is one of the main reasons f f f f that lead to the air pollution.
  30. 30. Necessity of the project construction• The project will not only manage the air pollution of Lanzhou but also improve th urban i f t t i the b infrastructure, which can create more social, hi h t i l environmental protect and economic benefits. Meanwhile, it is a cogeneration project and accords with the national policy, so it is a key p j project supported by the g pp y government to solve the p problems of city heat y supply and environmental contamination.• On the one hand, the project changes the situation that the area where to the south of Yellow River, east of Pingliang road, Chengguan district, Lanzhou is mainly d i l depend on coal-fired b il d l fi d boilers to supply h l heat. O the other h d i can On h h hand, it supply heat to the newly built constructions which have no heat producer. After the completion of the project, it can meet the needs of central heating for the constructions of 16.78 million m!. At the same time, it can demolish 16 78 m time and stop building small coal-fired boilers and solve the problems above- mentioned. After the implementation of the project, it can save standard fire coal of 285 thousand tons.• In conclusion, it is very essential to build this Project to solve the problems of the city heat supply in winter and the severe air pollution. By implementing the project, it can furthest lower the environmental pollution caused by firing coal, coal improve the air quality make good social environmental and economic quality, social, benefits so as to create a better investment climate and living conditions.
  31. 31. Comprehensive heat index• Total heat addition area: 1678 104 m!, current construction heat addition area: 630 104 m!, current heat addition area index: 50 w/m!. Planned heat addition area: 1048 104 m!, planned heat addition area index: 40 w/m!.• Thus, it can be figured out that the comprehensive heat index of the Project is 43.75 w/m!.
  32. 32. Heating load• Max heating load: 743.2 MW• Average heating load: 519.08 MW g g• Min heating load: 328.92 MW• Annual heat consumption: 6032532 80 GJ 6032532.80
  33. 33. Level 1 level 2 water service water service 130 130 90 90thermal Heating power station user power plant level 1 level water return 2 water return t t 70 70 65 65
  34. 34. Pipe network of heat supplySetting an valve chest at the exit of the thermal power plant, the chest must meet the needsof turn-off and measure.The main pipe goes northward along the 343# to the branch of Donggang east road after pp g g gg glaying out of the plant.One of the branch line is laid through 342-1#, 403#, 606-3#, Yantan road and Yanxi road to 1#plant. The other line is divided by two hypo-branch lines when it goes along Donggang eastroad to 345# (one is laid through 359 5# 350# and 367# to 48# plant; the other is laid 359-5#,through 608-1# and 605# to 5’ plant).Level one pipe network laid by 46.517 Km, most adverse loop: 7.94 Km, max pipe diameter:D1220x10, min pipe diameter: D219x6.
  35. 35. Thermal power plant• 92 plants will be set in the scope of the heat addition.• Determine of the scale of the plant.• Th There are 6 kinds of scale planned f th h t ki d f l l d for the heat addition area: 100 thousand m!, 120 thousand m!, 150 th thousand m!, 180 th d ! thousand m!, 200 th d ! thousand d m!, 250 thousand m!.
  36. 36. Total investment of the project p j• Total investment of the project: 423.1476 million yuan which i l d construction cost 337 003 million yuan, hi h includes t ti t 337.003 illi other expenses of project construction 40.2888 million yuan, reserve f d 30.1833 million yuan, interest funds 30 1833 illi i t t incurred during construction 8.5802 million yuan and initial i iti l working capital 7 0923 million yuan. ki it l 7.0923 illi• Capital source: application of state subsidy, government support, foreign loan and self-funding by project entity etc.
  37. 37. Project status• The project has been set up and got comments on and approve of feasibility study report report. Preliminary design is under way at present, hard work will be done so that the project can be started in 2012.
  38. 38. Conclusion and suggestion gg• Conclusion• By investment estimate and economic analysis the project analysis, has both economic benefits, social and environmental benefits. It is feasible in both aspects of finance and p national economy. Suggest that the project be prepared actively and implemented as early as possible so as to perform its functions. functions• suggestion• The implementation of the p j p project will p y a very active play y role in improving the environmental condition of the area to the south of Yellow River and east of Pingliang road, Chengguan district Lanzhou To enable the project be district, Lanzhou. constructed as soon as possible so as to bring benefits to the people of Lanzhou city, the government should give strong support to the project. project
  39. 39. Lanzhou Renovation Items of Energy-saving for Existing Buildings
  40. 40. . Base Situation of Stocking Buildings of Lanzhou g g According to the energy-saving building policy set by the Ministry ofConstruction of China and Department of Construction of Gansu province,Lanzhou is gradually carrying out the energy conservation standard of saving50% and 65% on the new buildings since 2000. Meanwhile, in order to resolvethe problems of existing building s high energy consumption and inferior building’sreside comfort level, energy-saving renovation will be implemented on non-energy-saving buildings built before 2007, so as to lower the overall urbanbuilding energy consumption. Accroding to statistics, there are about30,000,000 sq.m stocking buildings need and with valuable energy-savingrenovation, more than 95% of these buildings are brick-concrete structure,poor in thermal and insulating performance, lag in technical equipment, andwith serious energy waste in winter s heating and summer’s cooling with air winter’s summer sconditioners. These building’s heating basically gives priority to coal-fired, theconsumption of every heating season reached 30kg standard coal per squaremeter, and a large amount of Carbon dioxide and other greenhouse gases weredischarged while burning a mass of coal seriously threat the life quality andliving environment of the human. So, the energy-saving renovation of existingbuilding has been listed in the government work objective as an extremelyurgent task task.
  41. 41. Exterior wall heat preservation system Basal wall . Situation of Existing Building’s Waterproof interface agent Energy-saving Renovation nergy- Insulation layer Adhesives Alkaline-resistant fiberglass roving cloth 1 Renovation Content Waterproof anti-crack plastering mortarA. Energy-saving renovation of building Energy- Waterproof anti-mildew putty exterior protected construction construction. Dope finishing coat Including the renovation of exterior wall, doors and windows,roofing and floor(including fl (i l di overhead floor and h d fl d basement floor).
  42. 42. B. Indoor heating system measurement and temperature regulation renovation.Including heatmeter installation, temperature-sensing valve, to g temperature- p g achieve building (household)-separating measure and room-separating (household)- room- temperature control.C Heat source and heat pipe network thermal equilibrium transformation. pp q Mainly refers to the heat source combustion system, circulatory system and intelligent control transformation of transportation system, y g p y to achieve the outdoor temperature compensation, and frequency- frequency- controlled oxy-acetylene linkage and hydraulic automatic balancing oxy- operation, improve the heating efficiency.
  43. 43. Household Calorimeter MethodThe Main Individual Household Thermometric Radiator Heat Allocator Method Methods Flow Temperature Method
  44. 44. 2 Renovation Method A. Heat Metering System Household heat metering transformation. Taken measures to install heat balance H h ld h t t i t f ti T k t i t ll h t b l valve, temperature control valve and heat metering devices on the district heating network and unit return water system, unit (building) heat measurement, users carry out heat distribution method transformation. Heating system transformation. Install frequency conversion device and carry out for heat source , carry out automated regulation on the heat source equipment and y g q p circulatory system. Install temperature control valve in the main and branch heating pipe network, and the users unit backwater system, so that the entire heating zone temperature tends to equilibrium Use the inorganic heat transfer technology to recycle equilibrium. waste heat discharged from the boiler, to increase the furnace temperature. Creating GPRS heat supply network and user remote monitoring system. Through the unit controller ( (with transmission module) and the Mobile G S network, to ) GPRS achieve heat exchange station (boiler room), and remote control of heat metering, telemetry functions of user thermometric management system. Collecting stored thermal parameters in real time, to establish a database, provide accurate, scientific and effective data for the heating sector, improve operating management efficiency.
  45. 45. B. Building Exterior Protected Construction. Precedence order of building exterior protected renovation : external doors andwindows, roofing, unit doors, closed balcony, stairway partition walls, outer walls, theground. the transformation will give priority to the doors and windows, balconies andother weak parts. parts 3 Present Working Situation of The Existing building Energy-saving b ildi E i At the"Eleventh Five-Year" period, we have completed 1.3 million square meters of existing building energy-saving (including energy-saving heating energy saving energy saving system with 1.24 million square meters, an integrated energy-saving transformation with 60 thousand square meters). And also, 572,800 square meters transformation tasks has been completed in 2011. Through the inspection and acceptance t completed transformation projects, the heating i ti d t to l t dt f ti j t th h ti energy consumption of the implemented projects reduced significantly, and indoor thermal comfort markedly improved.
  46. 46. . The “twelfth five-year” Plan of Existing Building Energy Saving 1 According to the overall heat metering and energy-savingarrangement of Chinese Ministry of Construction s “twelfth five- twelfthyear” plan , the basic requirements to be completed by 2020, with theheating measure and energy-saving transformation of the valuable g gy glocal old residence. We plan to complete the energy savingtransformation of existing residential buildings for 5 million squaremeters in the “twelfth five-year” plan, the estimated total investment is1.34 billion yuan.
  47. 47. 2 Fund R i i F d Raising Currently according to the actual situation in our city, the mainmeans of th f d raising are: 1 The district ( f the fund i i 1. Th di t i t (county) government t ) tfinance established special funds for renovation of existing buildingsenergy,energy which has been listed in the annual budget of finance. 2. The finance 2active application on the national and provincial awards funds. 3. Self-financing of units and residents, residents can extract a certain gamount of housing fund to invest in energy-saving transformation. 4.Through the implementation of contract energy managementapproach to attract the investment from social capital.
  48. 48. 3 Existing Problems Energy-saving transformation of the existing buildings is a costly andlong-periodlong period systems engineering due to a short time of impelmentation, there engineering, impelmentationare still some aspects need to improve, such as working mechanisms, policysystem and so on. According to the current situation, compared to the stateand local financial incentives subsidies and the cost of renovation, there stillexists a large funding gap, to a large extent restricted the transformationcarried out smoothly To further increase the fight for support efforts from smoothly.national funding to the western region, and to ensure local financial subsidiesin place timely and sufficiently while the transformation funds will be raisedthrough multiple channels, and actively introduce social capital at home andabroad to invest in the transformation projects, to establish an effectivemechanism for promoting the work, and further accelerate the pace of the workenergy-saving work in Lanzhou City.
  49. 49. Renewable Energies and ConstructionsIntegration Projects in Lanzhou City
  50. 50. general situation of the project Renewable energies, ki d of natural resources with th ability of unceassingly R bl i kind f t l ith the bilit f i lregenerated and being replenished with the passage of time has essentially anendless supply, because they are not destroyed during their own transformationand human use. Renewable energies mainly refer to solar energy, water energy,wind energy, bi i d biomass energy, geothermal pressure and ocean energy etc., which th l d t hi hare practically infinite and cannot be depleted. Having little or no negative impacton the environment, renewable energies are also called green energy. Vigorouslydeveloping renewable energies is of great importance to the development ofeconomic and social development of China and the whole world. Lanzhou is ocates in the geographically centre of Chinas land territory it liesbetween the parallels 35 34 and 37 07 07 N and the meridians 102 35and 104 34 E The city located in a temperate continental climate zone with the 34 E. zone,mean annual temperature 9.3 C, the annual average rainfall 360 millimeters,the average annual sunshine hours 2480.1 hours and average frost-free period180 days. Based on the analysis and evaluation, Lanzhou has rich renewableenergies,energies especially solar energy water energy and shallow geothermal energy energy, energy.Thus the city enjoys a favorable condition of development and use of therenewable energies. The future for development and utilization is therefore bright.
  52. 52. Solar energy resource and application of solar building integration project l b ildi i t ti j t• 1 Solar Energy Resources in Lanzhou gy• Owing to its special geographical location and climate solar energy is abundant in Lanzhou. With preliminary evaluation done by professional organization, annual mean radiative energy of Lanzhou is 5104.903MJ/ g , gy (m2·a) and the mean annual sunshine duration is 2480.1 hours, 6.8 hours a day on average. From May to July, sunshine hours reaches maximum and from November to January, it reaches minimum. Based on y the calculation according to Meteorological Industry Standard of PRC QX/T89-2008, Lanzhou is the area rich in solar energy, only next in number to Tibet.• 2 General Information of Solar Energy and Constructions Integration Projects in Lanzhou• <1>Main Ways of Applying Solar Energy in Constructions 1 Main• Currently, there are two main aspects in application of solar energy and constructions integration projects in Lanzhou, one is Solar Heater System; the other is Photovoltaic system, which includes off-grid system off grid photovoltaic storage battery system and grid-connected system
  53. 53. Under the supervision of United Nations Industrial DevelopmentOrganization, grid connectedOrganization grid-connected multicrystalline silicon solar panels and a collective solar hot water system have been built in Lanzhou
  54. 54. • <2> Application Status of Solar Energy and Constructions Integration Projects in Lanzhou• Among all the solar energy and constructions integration projects in Lanzhou, 95% of them are solar heater system and constructions integration projects, where solar heater system and public buildings integration projects are in the majority. This fully testifies to the applicating efficiency of solar heater system and public buildings integration project. Ph t i t ti j t Photovoltaic system is still on the primary stage. lt i t i till th i t With the gradual maturation of power price and grid-connected techniques, these projects would enter a faster development period.• Up to now more than 10 solar heater system and constructions integration projects, which is nearly 400,000 square meters have been set up in Lanzhou. Application areas of solar energy water heaters used by general people have reached 1,000,000 square yg meters. The projects were widely acknowledged by both rural and urban residents. Meanwhile, as the capital city of Gansu Province, a number of solar system development and research institutes were settled here like a new established “UNIDO International Solar here, UNIDO Energy Centre ”, Gansu Natural resources Research Institute, Solar Energy and Environmental engineering & Technology institute in Lanzhou Jiaotong University, Gansu Jinchuan Solar Energy Co., Ltd, Gansu Tuohe New Energy Co., Ltd etc. The city initially has strong G C research & development capabilities of Solar Energy Industry
  55. 55. The Proportions of People Using Solar Heating Systems in Some Residential Quarters in Lanzhou
  56. 56. • <3>Development Planning of Solar Energy and Constructions Integration Projects in Lanzhou During the12th Five -Year Plan, Year Plan• In order to push forward the application of the renewable energy in constructions, Lanzhou Urban and Rural Construction Bureau devised A Specific Plan for the Application of The Renewable p pp Energy in Construction During the 12th Five -Year Plan. The plan proposes to achieve the goal of increasing 10 180 000 square meters of solar heater system and constructions integration projects of these areas 280 000 square meters projects, areas, 280,000 would be modified solar heating system in current buildings and 9,900,000 square meters would be newly-built solar heater system and constructions integration p j y g projects. Effective area of solar collectors would increase 184,700 square meters in Lanzhou from 2011 to 2015. When completed, it will be possible to save at least 40,500 tons of coal every year in Lanzhou. The estimated investment cost of the projects is about 337 000 000 337,000,000 yuan.
  57. 57. Shallow Geothermal Energy and implementation projects in Lanzhou• 1 Shallow Geothermal Energy• Shallow geothermal energy is the low- temperature heat energy (<25 ), reserved in the soil, sandstone and underground water of the thermostat , g layer under the ground surface layer within the depth of 200m. Shallow geothermal energy, featuring in wide distribution and rich utilization value, is known as the clean & renewable pollution-free resources. Thus the future for development and utilization is bright.• Shallow geothermal energy is widely distributed and richly reserved in Lanzhou. With evaluation done by professional organization, the quantity yp g , q y of shallow geothermal energy in Lanzhou equals 142.84 108t of coal. The quantity of natural resources and sewage-source equals 26.64 108 tons of coal. The proved ground source capacity reaches to 0.19 108 t, groundwater source 2.16 108 t, surface Water Source 23.73 108 t and sewage-source 0.56 108 t. If exploiting half of the overall quantity of shallow geothermal energy, the winter in-house heating and summer cooling requirements of the whole city would be meet. li i t f th h l it ld b t
  59. 59. • 2 Application Status of Shallow Geothermal Energy in Lanzhou city• Utilization of shallow geothermal energy was developed gradually in the last decade in Lanzhou, with the patterns of usage are to provide heating systems and refrigeration systems in buildings with ground source heat pump system Up to now system. about 20 ground source heat pump systems, which is nearly 500,000 square meters have been set up in Lanzhou. A Survey was conducted to determine whether these projects were p j running smoothly. The result indicates that except some projects failed to work normally, due to the defects or errors in the aspects of design, construction and management, the projects in general were encouraging and the designing targets were basically met. The projects reaped significant economic benefits, but also resulted in good social and ecological benefits. Th are approved b b th i b fit They d by both investor and th users. t d the With the support of the government and continuous growth in the quality, these projects would enter a faster development period. period
  60. 60. • 3 Development Planning of Shallow Geothermal Energy Utilization in Lanzhou During the 12th Five -Year Plan• Based on A Specific Plan For The Application of The Renewable Energy in Construction during The 12th Five -Year Plan, Plan the goal of increasing 4 550 000 square meters of Shallow Geothermal Energy and constructions integration projects should be achieved, of these areas, 480,000 square meters would be ground source heat pump system 2 520 000 system, 2,520,000 square meters would be groundwater source heat pump and 1,550,000 square meters would be the sewage-source heat p p y pump system. When completed, it will be p p , possible to save at least 62,100 tons of coal every year in Lanzhou. The estimated investment cost of the projects is about 986,000,000 yuan. From the currently usage situation and its future development trend, with the technology becoming f t d l t t d ith th t h l b i mature gradually, Shallow Geothermal Energy and construction integration projects may be the most potential renewable energy. Its social and ecological benefits would energy also be significant. With the support of the government and implement of the preferential policy of technology and management, management shallow geothermal energy and construction integration projects will receive new life and vigor.
  61. 61. www.lanzhou.gov.cn g