Caofeidian Eco-city is an important part of development strategy of “Four Points and One Zone”, “Four Main Functional Areas” and “Tangshan Bay”, covering an area of 150km2 in the east of Caofeidian New Area, 5km from Caofeidian Industrial Park in the west, 25km from harbor development zone in the east, 220km from Beijing, 120km from Tianjin, 80km from Tangshan and 170km from Qinhuangdao, adjacent to Beijing-Tianjin-Hebei urban agglomeration, enjoying excellent transportation and location conditions. Vanion is the first enterprise that invested in development and construction of Caofeidian Eco-city. The development and construction of Caofeidian Eco-city takes 12 years in three stages:
Short term (2008— 2010): construction stage of infrastructure and starting area that covers an area of 12km2. Build city on harbor and promote city with harbor, rapidly push forward infrastructure construction and preliminarily form a population size of about 60,000.
Mid-term (2011 — 2020): stage of rapid construction. Finish demonstration mode of eco-city construction in the construction area of 74.3 km2, build the rudiment of southern core city of Tangshan and form a population size of about 800,000.
Long-term (after 2020), comprehensively finish planning for Caofeidian new town construction, further improve urban functions, and create a city covering an area of 150 km2 with a population of one million.
Apply ecological protection technology, build ecological corridors (achieve through planning and design means)
Fully consider surrounding landform during construction, adopt measures suiting local conditions, introduce riverway landscape resource on the west side of plot to build good ecological corridor, and use riverway biological purification community protection technology to form effective ecological protection interface.
Use principle of carbon-oxygen equilibrium to efficiently unify landscape effect and ecological greening (realized with planning and design means)
Choose varieties of trees suitable for local plants according to principle of carbon-oxygen equilibrium and green quantity. Proportion is >80%. The community greening is dominated by arbors, which is appropriately combined with shrubs and grass to improve greenbelt space utilization to get the maximum ecological benefits with limited greenbelt. Choose foreign varieties of trees that can effectively absorb noise and dust; purify air to produce good landscape and ecological effect. Permeability of hard pavement is not less than 70%.
Optimize outdoor design with microclimate simulation technology, reduce heat island effect of region (realized with planning and design means)
Plan breeze channels (inside streets and blocks) in project plot according to dominant wind direction in summer to introduce cool summer breeze into the plot and reduce heat island effect; plan high-rise buildings in the north to block cold air in winter.
Set up people-oriented green travel and transport system (realized with planning and design means)
Advocate green travel mode, ensure that share rate is more than 30% through planning complete network of walk and non-motor vehicles. Moreover, plan and set public traffic system within 200 m, ensure operation efficiency of public traffic and realize green travel mode.
Establish collection, disposal and recycling system by classification and grading for organic garbage (realized by setting separate waste collection points)
Set up collection, disposal and recycling system by grading for organic garbage through different hierarchies: residents, communities and urban sanitation facilities to gradually recycle and reuse 100% organic garbage.
Improve external envelope structure insulation technology by 65% energy saving technology
Isolate external walls, roof, underground, windows and other heat bridges by reducing shape coefficient of buildings, reasonably planning orientation, space and window-wall ratio, and using external wall insulation, highly insulated external windows, double glazing glass and other technologies to reduce energy consumption of buildings and meet energy-saving requirements.
Reduce thermal insulation and western exposure design of buildings (use landscape planning and design), fully consider summer sunshine, western exposure and other effects in architectural scheme design, block solar energy radiation with west landscape greening design, reduce load of air-conditioning system and save energy.
Optimize the layout of the building; make rational use of natural ventilation technology
Optimize building layout and reasonably use natural wind to reduce air-conditioning service cycle and raise energy-saving ratio of buildings with predominant wind direction resource in summer and wind environment simulation technology.
Use clean energy efficiently, improve energy efficiency
Realize supply of domestic hot water, heating, refrigeration, etc. with solar energy, ground source heat pump and other clean energies in line with local climate and natural resources, improving resource usage efficiency.
Set up a separate metering and end controllable system, realize household metering
Separate metering system adjustable and controllable at terminal is set up in the household to realize household metering and make it convenient for late property management and energy saving.
Water-saving technology
Conduct overall, comprehensive utilization of water resources to achieve water supply in different quality
Make overall planning for indoor and outdoor water supply and drainage system, comprehensively plan drainage of indoor and outdoor rainwater and sewage, utilization of reclaimed water and use of water for greening and landscape, improve water resource utilization and reduce water treatment cost.
Wastewater treatment technology
Black and grey water separate system is implemented in the household, execute graded reuse of sewage through separate collection and treatment to increase reused ratio of sewage.
Use rainwater collection technology to reduce domestic water
Reasonably design permeable pavement according to local conditions, take rainfall penetration measures, effectively reduce load of municipal rainwater pipe network and improve purification and viewing functions with perfectly planned ground rainwater and building roof rainwater collection system of the plot.
Adopt water-saving appliances and equipments, water-saving rate will be not less than 8%
Devices, equipments and appliances published in the (product) catalog of Water-saving Devices Encouraged by the State for Development are chosen prior to improve
All rebar is high-intensity HRB400 type, so the rebar amount will be decreased by about 13.8kg/m2 compared with conventional rebar.
Use shallow ground source heat pump technology to provide heating and refrigerating system
Use low grade energy according to local geological conditions, which is an important energy-saving and environmentally friendly measure for realizing ecological community. Localized passive sun space to effectively use clean energy of solar energy
Locally design passive sunspace on the south side of buildings to effectively use solar energy, improve indoor thermal insulation effect and meet energy-saving requirements.
Adopt building integration with concentrated setting of solar hot water
Fully consider structures where solar hot water collectors are centralized on the roof in architectural scheme to realize integrated design of buildings and equipment, increase use functions and pay attention to the visual effect of the fifth façade.
Use energy saving lighting technology for public space
Use solar garden lighting unit in the outdoor, and use energy saving lighting fixtures, sound and light control delay switch and household metering and other measures in indoor public spaces in the building (such as lobbies, corridors, stairwells, etc.).
Variable-pressure only deadwind pass
Vertical central exhaust system of the kitchen is installed with variable pressure check valve mainly to prevent smoke in the flue from leaking into the room and ensure fresh air.
Use high soundproof doors and windows facing the street
High standard doors and windows meeting requirements of Code for Design of Sound Insulation of Civil Buildings are used to effectively isolate outdoor noise and improve indoor sound environment.
Intelligent system of living at home
Unit talkback, communication, monitoring center and other household prevention designs are used to provide efficient and safe security system and interactive service for owners, and provide community monitoring, perimeter alarm, etc.