February, 2012

Lanzhou Rail Transit Construction

Construction Project of supporting pipe network of heat supply of Cogeneration--- “Construct big new plants by shutting down small old ones”, Lanzhou Thermoelectric Limited Liability Company, State Po erPower.

Lanzhou Renovation Project of Energy-Saving forLanzhou Renovation Project of Energy Saving for Existing Buildings

Renewable Energies and Constructions Integration

Projects in Lanzhouj

Lanzhou Rail Transit ConstructionLanzhou Rail Transit Construction

Urban Overview of LanzhouUrban Overview of LanzhouUrban Overview of LanzhouUrban Overview of Lanzhou

Urban Overview of LanzhouUrban Overview of Lanzhou

Current Situation and Future Planning of Lanzhou

TransportThe basic form of Lanzhou urban road network is “district division

d t k + li ki ” d th k th id

Transport

road network + linking passageways ” and the areas keep the grid

pattern. The traffic flow shows the situation of “crowed at the director of

east-west ” and “blocked at the director of south-north”. The narrowest

ti f th “b ttl k” f L h t tsection forms the “bottleneck” of Lanzhou transport.

The Narrowest Section

Lanzhou Social and Economic Status Lanzhou Social and Economic Status Lanzhou Social and Economic Index DiagramLanzhou Social and Economic Index Diagram

Li N t k Pl i f L h R il T itLi N t k Pl i f L h R il T itLine Network Planning of Lanzhou Rail TransitLine Network Planning of Lanzhou Rail Transit

Line Network Planning of Lanzhou Rail TransitLine Network Planning of Lanzhou Rail TransitLine Network Planning of Lanzhou Rail TransitLine Network Planning of Lanzhou Rail Transit

Central Urban Area line Network is composed of Line No. 1, Line No. 2 and Line No. 3 with the totle length of about 90km. There are 67 stops in the network. In the planning, Line No. 2 and Line No. 3 form the framework of the network and run through the central urban areathe framework of the network and run through the central urban area from the east to the west. Line No. 3 is the auxiliary line and connects the two banks of the Yellow River in Lanzhou.

ShortShort--Term Construction Planning of Lanzhou Rail TransitTerm Construction Planning of Lanzhou Rail TransitShortShort Term Construction Planning of Lanzhou Rail TransitTerm Construction Planning of Lanzhou Rail Transit

Lanzhou MediumLanzhou Medium--Term Construction PlanningTerm Construction Planning 20212021——20302030Lanzhou MediumLanzhou Medium Term Construction PlanningTerm Construction Planning 20212021 20302030

LongLong--Term Construction Planning of Lanzhou Rail TransitTerm Construction Planning of Lanzhou Rail Transit

Line DirectionLine Direction Line Direction PlaneLine Direction PlaneLine DirectionLine Direction Line Direction PlaneLine Direction Plane

1616

Station DistributionStation DistributionThe short--term plan is to build the part from Chen guanying to

Donggang with the total length of about 26.53km, which is underground.

Station DistributionStation Distribution

gg g g , g

There are 20 stops and 1356m between each stops averagely. The

longest distance between stops is 2320m and the shortest is 822m. Itlongest distance between stops is 2320m and the shortest is 822m. It

plannes to build one depot and one parking lot.

17

Overview of StationsOverview of Stations

5 transfer stations 1 station at the 3rd floor underground 14 stations at the 2nd floor underground

Overview of StationsOverview of Stations

RangeRangeRange Structure Underground and Construction MethodsRange Structure Underground and Construction Methods

Range Tunnels Underground(Not includeRange Tunnels Underground(Not include Access line): 21km Dual System , totlly 20 rangesIn 21km, shield method section is 15.5km which takes 75% of the total length. Miningwhich takes 75% of the total length. Mining method section is 2.5km which takes 12% of the total. Open-Cut method section is 3.1km which takes 13% of the total.

PowerPower--Supply SystemSupply System

Project PlanningProject Planning

The short-term emgineering starts the experimental section in July 2011. The Full range of civil

i i t t i O t b Th fi t t t i i O t b 2016 Th t i l ti i t thengineering starts in October. The first test run is in October 2016. The trial operation is at the

end of December 2016. The total duration is 63 months.

July 2011 the Beginning of 2014: Basically complete the civil workJuly 2011 the Beginning of 2014: Basically complete the civil work

July 2013 December 2015: Complete station renovation and mechnical and electronical

installationinstallation

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.

Investment EstimationInvestment Estimation

FinancingFinancing

27.6% of the total funds will be from the

government. The other 72.4% will be loaned fron g %

domestic commercial bank. Next, we will try for

the policy bank funds and reduce the funds costthe policy-bank funds and reduce the funds cost.

27.6% from Government72.4% from loan

Financial EvaluationFinancial Evaluation

The construction period is 5 years. The operation period is 25 years. The

economic evaluation caculation period is 30 years. The financial internal

rate of return of the Project before tax is 0.63% and 0.54% after tax. The

payback period (including construction period) before tax is 29.6years

and 29 7 years after tax The loan would not be paid off during theand 29.7 years after tax. The loan would not be paid off during the

caculation period.

As the urban infrustructure, the project is public welfare. From the aspect

of the financial status of the project itself, the profitability and solvency

are weak. It needs to raise the proportion of the capital and try for the

government subsidies in the preliminary period of the operation.

National Economic Evaluation and Social EvaluationNational Economic Evaluation and Social Evaluation

C t ti P j t f tiC t ti P j t f tiConstruction Project of supporting pipe network of heat supply of

Construction Project of supporting pipe network of heat supply ofpipe network of heat supply of Cogeneration--- “Construct big new pipe network of heat supply of Cogeneration--- “Construct big new plants by shutting down small old plants by shutting down small old ones”, Lanzhou Thermoelectric Limited Liability Company Stateones”, Lanzhou Thermoelectric Limited Liability Company StateLimited Liability Company, State Power.Limited Liability Company, State Power.

Areal map of heat supply

Scope 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.

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.

Current problemsCurrent problems

Scope of heat supply of the project is the area to the south of• 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: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 roomsof Lanzhou. Coal-fired area, jointed and scattered boiler rooms 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 thermalcapacity and low efficiency of dust collection, the average thermal 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.

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 climateto spread, which leads to a special basin 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• In Lanzhou, the concentration of the three main pollutants(S02 N02 PMIO) in 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-value of the concentration of PMIO in heating period is 1.76 times than it is in nonheating 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 S02heating or non-heating period, always takes the large part and comes before S02 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

f f f femission of coal-fired boilers in the winter of Lanzhou is one of the main reasons that lead to the air pollution.

Necessity of the project construction

• The project will not only manage the air pollution of Lanzhou but also i th b i f t t hi h t i limprove the urban infrastructure, which can create more social, environmental protect and economic benefits. Meanwhile, it is a cogeneration project and accords with the national policy, so it is a key project supported by the government to solve the problems of city heat p j pp y g p ysupply 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

i l d d l fi d b il l h O h h h d imainly depend on coal-fired boilers to supply heat. On the other hand, it can 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 demolishfor the constructions of 16.78 million m . At the same time, it can demolish 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 improve the air quality make good social environmental and economiccoal, improve the air quality, make good social, environmental and economic benefits so as to create a better investment climate and living conditions.

Comprehensive heat indexComprehensive 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!.

Heating loadHeating load

• Max heating load: 743.2 MW• Average heating load: 519.08 MWg g• Min heating load: 328.92 MW• Annual heat consumption: 6032532 80 GJ• Annual heat consumption: 6032532.80 GJ

Level 1 water service

level 2 water service

130 90130 90

thermal power

Heating power station userpower plant

level 1 level 2 t t

70 65

water return

70

2 water return

6570 6570 65

Pipe network of heat supply

Setting an valve chest at the exit of the thermal power plant, the chest must meet the needs of turn-off and measure.The main pipe goes northward along the 343# to the branch of Donggang east road after p p 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 east road to 345# (one is laid through 359 5# 350# and 367# to 48# plant; the other is laidroad to 345# (one is laid through 359-5#, 350# and 367# to 48# plant; the other is laid 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.

Thermal power plant

• 92 plants will be set in the scope of the heat addition.

• Determine of the scale of the plant.Th 6 ki d f l l d f th h t• There are 6 kinds of scale planned for the heat addition area: 100 thousand m!, 120 thousand m!, 150 th d ! 180 th d ! 200 th d150 thousand m!, 180 thousand m!, 200 thousand m!, 250 thousand m!.

Total investment of the projectp j

• Total investment of the project: 423.1476 million yuan hi h i l d t ti t 337 003 illiwhich includes construction cost 337.003 million yuan,

other expenses of project construction 40.2888 million f d 30 1833 illi i t tyuan, reserve funds 30.1833 million yuan, interest

incurred during construction 8.5802 million yuan and i iti l ki it l 7 0923 illiinitial working capital 7.0923 million yuan.

• Capital source: application of state subsidy, government support, foreign loan and self-funding by project entity etc.

Project statusProject status

• The project has been set up and got comments on and approve of feasibility study reporton and approve of feasibility study report. Preliminary design is under way at present, hard work will be done so that the project can bework will be done so that the project can be started in 2012.

Conclusion and suggestiongg

• ConclusionBy investment estimate and economic analysis the project• By investment estimate and economic analysis, the project has both economic benefits, social and environmental benefits. It is feasible in both aspects of finance and pnational economy. Suggest that the project be prepared actively and implemented as early as possible so as to perform its functionsperform its functions.

• suggestion• The implementation of the project will play a very active p p j p y 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 beChengguan district, Lanzhou. To enable the project be constructed as soon as possible so as to bring benefits to the people of Lanzhou city, the government should give strong support to the projectstrong support to the project.

Lanzhou Renovation Items of Energy-Lanzhou Renovation Items of Energy-

saving for Existing Buildings saving for Existing Buildings

.. Base Base SSituation of ituation of SStocking tocking BBuildings of Lanzhouuildings of Lanzhou

According to the energy-saving building policy set by the Ministry of

gg gg

Construction of China and Department of Construction of Gansu province, Lanzhou is gradually carrying out the energy conservation standard of saving 50% and 65% on the new buildings since 2000. Meanwhile, in order to resolve the problems of existing building’s high energy consumption and inferiorthe problems of existing building s high energy consumption and inferior reside comfort level, energy-saving renovation will be implemented on non-energy-saving buildings built before 2007, so as to lower the overall urban building energy consumption. Accroding to statistics, there are about 30,000,000 sq.m stocking buildings need and with valuable energy-saving renovation, more than 95% of these buildings are brick-concrete structure, poor in thermal and insulating performance, lag in technical equipment, and with serious energy waste in winter’s heating and summer’s cooling with airwith serious energy waste in winter s heating and summer s cooling with air conditioners. These building’s heating basically gives priority to coal-fired, the consumption of every heating season reached 30kg standard coal per square meter, and a large amount of Carbon dioxide and other greenhouse gases were discharged while burning a mass of coal seriously threat the life quality and living environment of the human. So, the energy-saving renovation of existing building has been listed in the government work objective as an extremely urgent taskurgent task.

Exterior wall heat preservation system

Basal wall

. Situation of . Situation of EExisting xisting BBuilding’s uilding’s EEnergynergy--saving saving RRenovationenovation

Waterproof interface agent

Insulation layer

Adhesives

11 Renovation Renovation CContentontentAA.. EnergyEnergy--saving renovation of building saving renovation of building

exterior protected constructionexterior protected construction

Alkaline-resistant fiberglass roving cloth

Waterproof anti-crack plastering mortar

Waterproof anti-mildew puttyexterior protected construction. exterior protected construction. Including the renovation of exterior Including the renovation of exterior wall,wall, doors and windows,roofing and doors and windows,roofing and fl (i l di h d fl dfl (i l di h d fl d

Dope finishing coat

floor(including overhead floor and floor(including overhead floor and basement floor).basement floor).

BB. . Indoor heating system measurement and temperature regulation Indoor heating system measurement and temperature regulation

renovation.Including heatmeter installation, renovation.Including heatmeter installation, temperaturetemperature--sensing valve, to sensing valve, to gg pp gg

achieve building (household)achieve building (household)--separating measure and separating measure and roomroom--separating separating

temperature control.temperature control.

CC Heat source and heat pipe network thermal equilibrium transformation.Heat source and heat pipe network thermal equilibrium transformation.p p qp p q

Mainly refers to the heat source combustion system, circulatory Mainly refers to the heat source combustion system, circulatory

system and intelligent control transformation of transportation system, system and intelligent control transformation of transportation system, y g p yy g p y

to achieve the outdoor temperature compensation, and frequencyto achieve the outdoor temperature compensation, and frequency--

controlled oxycontrolled oxy--acetylene linkage and hydraulic automatic balancing acetylene linkage and hydraulic automatic balancing

operation, improve the heating efficiency.operation, improve the heating efficiency.

Household Household CCalorimeter alorimeter MMethodethod

The Main Individual Household

Thermometric Radiator Radiator HHeat eat AAllocatorllocator MMethodethodMethods

FlowFlow TTemperatureemperature MMethodethodFlow Flow TTemperature emperature MMethodethod

2 Renovation MethodA. Heat Metering SystemH h ld h t t i t f ti T k t i t ll h t b lHousehold heat metering transformation. Taken measures to install heat balance

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 pcirculatory 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 recycletemperature tends to equilibrium. Use the inorganic heat transfer technology to recycle waste heat discharged from the boiler, to increase the furnace temperature.

Creating GPRS heat supply network and user remote monitoring system. Through ( ) G Sthe unit controller (with transmission module) and the Mobile GPRS network, to

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.

B. Building Exterior Protected Construction. Precedence order of building exterior protected renovation : external doors and

windows, roofing, unit doors, closed balcony, stairway partition walls, outer walls, the ground. the transformation will give priority to the doors and windows, balconies and other weak partsother weak parts.

3 Present Working Situation of The Existing 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

building Energy-saving

meters of existing building energy-saving (including energy-saving heating 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 i ti d t t l t d t f ti j t th h tiinspection and acceptance to completed transformation projects, the heating energy consumption of the implemented projects reduced significantly, and indoor thermal comfort markedly improved.

. The “twelfth five-year” Plan of Existing Building Energy Saving

1 According to the overall heat metering and energy-saving arrangement of Chinese Ministry of Construction s “twelfth five-arrangement of Chinese Ministry of Construction s twelfth five-year” plan , the basic requirements to be completed by 2020, with the heating measure and energy-saving transformation of the valuable g gy glocal old residence. We plan to complete the energy saving transformation of existing residential buildings for 5 million square meters in the “twelfth five-year” plan, the estimated total investment is 1.34 billion yuan.

2 F d R i i2 Fund RaisingCurrently according to the actual situation in our city, the main

f th f d i i 1 Th di t i t ( t ) tmeans of the fund raising are: 1. The district (county) government finance established special funds for renovation of existing buildings energy which has been listed in the annual budget of finance 2 Theenergy, which has been listed in the annual budget of finance. 2. The active 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 management approach to attract the investment from social capital.

3 Existing ProblemsEnergy-saving transformation of the existing buildings is a costly and

long period systems engineering due to a short time of impelmentation therelong-period systems engineering, due to a short time of impelmentation, there are still some aspects need to improve, such as working mechanisms, policy system and so on. According to the current situation, compared to the state and local financial incentives subsidies and the cost of renovation, there still exists a large funding gap, to a large extent restricted the transformation carried out smoothly To further increase the fight for support efforts fromcarried out smoothly. To further increase the fight for support efforts from national funding to the western region, and to ensure local financial subsidies in place timely and sufficiently while the transformation funds will be raised through multiple channels, and actively introduce social capital at home and abroad to invest in the transformation projects, to establish an effective mechanism for promoting the work and further accelerate the pace of themechanism for promoting the work, and further accelerate the pace of the energy-saving work in Lanzhou City.

Renewable Energies and Constructions Renewable Energies and Constructions

Integration Projects in Lanzhou CityIntegration Projects in Lanzhou City

general situation of the project

R bl i ki d f t l ith th bilit f i l

general situation of the project

Renewable energies, kind of natural resources with the ability of unceassinglyregenerated 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,

i d bi th l d t hi hwind energy, biomass energy, geothermal pressure and ocean energy etc., whichare 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 China's land territory it lies between the parallels 35 34' and 37 07' 07 N and the meridians 102 35' and 104 34' E The city located in a temperate continental climate zone with theand 104 34 E. The city located in a temperate continental climate zone, with the mean annual temperature 9.3 C, the annual average rainfall 360 millimeters, the average annual sunshine hours 2480.1 hours and average frost-free period 180 days. Based on the analysis and evaluation, Lanzhou has rich renewable energies especially solar energy water energy and shallow geothermal energyenergies, especially solar energy, water energy and shallow geothermal energy. Thus the city enjoys a favorable condition of development and use of the renewable energies. The future for development and utilization is therefore bright.

GEOGRAPHIC POSITION OF LANZHOU IN GANSU PROVINCEGANSU PROVINCE

Solar energy resource and application of l b ildi i t ti j t

• 1 Solar Energy Resources in Lanzhou

solar building integration project

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 ythe 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 Constructions1 Main Ways of Applying Solar Energy in Constructions• 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-gridSystem; the other is Photovoltaic system, which includes off grid photovoltaic storage battery system and grid-connected system

Under the supervision of United Nations Industrial Development Organization grid-connected multicrystalline silicon solar panels andOrganization, grid connected multicrystalline silicon solar panels and

a collective solar hot water system have been built in Lanzhou

• <2> Application Status of Solar Energy and Constructions Integration• <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 constructionsLanzhou, 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 i t ti j t Ph t lt i t i till th i tintegration project. Photovoltaic system is still on the primary stage. 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• 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 y gmeters. 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 Solarsettled here, like a new established UNIDO International Solar Energy Centre ”, Gansu Natural resources Research Institute, Solar Energy and Environmental engineering & Technology institute in Lanzhou Jiaotong University, Gansu Jinchuan Solar Energy Co., Ltd, G CGansu Tuohe New Energy Co., Ltd etc. The city initially has strong research & development capabilities of Solar Energy Industry

The Proportions of People Using Solar Heating Systems in Some Residential Quarters in Lanzhou

• <3>Development Planning of Solar Energy and Constructions Integration Projects in Lanzhou During the12th Five -Year PlanIntegration Projects in Lanzhou During the12th Five 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 ppEnergy 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 metersintegration projects, of these areas, 280,000 square meters 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 projects. Effective area of y g p jsolar 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 000estimated investment cost of the projects is about 337,000,000 yuan.

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 , glayer 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 y p g , q yof 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

li i t f th h l it ld b tcooling requirements of the whole city would be meet.

HYDROGEOLOGIC MAP OF URBAN CENTRE DISTRICTS OF LANZHOU CITY

• 2 Application Status of Shallow Geothermal Energy in Lanzhou city

• Utilization of shallow geothermal energy was developed• 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 nowin buildings with ground source heat pump system. Up to nowabout 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 jrunning 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 b fit Th d b b th i t d thbenefits. They are approved by both investor and the users. With the support of the government and continuous growth in the quality, these projects would enter a faster development periodperiod.

• 3 Development Planning of Shallow Geothermal Energy Utilization in Lanzhou During the 12th Five -Year PlanUtilization 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 the goal of increasing 4 550 000 square meters ofPlan, 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 000meters would be ground source heat pump system, 2,520,000 square meters would be groundwater source heat pump and 1,550,000 square meters would be the sewage-source heat pump system. When completed, it will be possible to save at p p y p , pleast 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 f t d l t t d ith th t h l b ifuture development trend, with the technology becoming mature gradually, Shallow Geothermal Energy and construction integration projects may be the most potential renewable energy Its social and ecological benefits wouldrenewable energy. Its social and ecological benefits would also be significant. With the support of the government and implement of the preferential policy of technology and management shallow geothermal energy and constructionmanagement, shallow geothermal energy and construction integration projects will receive new life and vigor.

www.lanzhou.gov.cng