China Academy of Building Research NZEBuilding

  • by SHICONG ZHANG
  • /
  • 2016-07-08 14:06:21
  • /
  • Internazionale
  • /
  • 9396 / EN

New Construction

  • Building Type : Office building < 28m
  • Construction Year : 2012
  • Delivery year : 2014
  • Address 1 - street : 30# Beisanhuandonglu, Beijing, China 100013 BEIJING, China
  • Climate zone : [Cwa] Mild, dry winter, hot and wet summer.

  • Net Floor Area : 4 025 m2
  • Construction/refurbishment cost : 2 600 000 €
  • Cost/m2 : 645.96 €/m2

Proposed by :

Certifications :

  • Primary energy need :
    75 kWhpe/m2.year
    (Calculation method : Primary energy needs )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building
​The nearly zero energy building (NZEB) at the China Academy of Building Research (CABR) adhered to the design principle of "passive building, proactive optimization, economic and pragmatic". An ambitious annual energy consumption goal of 25 kWh/(m².a) (including heating, cooling and lighting energy) was set during the design phase without compromise of building function and indoor environment quality. The demonstration project integrated best available building energy conservation technologies, striving to build a signature NZEB project and establishing foundation for development of China’s NZEB standard.

Data reliability

3rd part certified

https://www.construction21.org/data/sources/users/19348/24-china-academy-of-building-research-nearly-zero-energy-building-introduction.doc

Stakeholders

    Others

    CHINA ACADEMY OF BUILDING RESERACH

    86-10-84270181

Contracting method

General Contractor

Owner approach of sustainability

the first nearly zero energy building in China, designed and built under the umbrealla of US-China Clean Energy Research Center Program. With the goal of annual heating, cooling and lighting energy under 25KWH/m2.

Architectural description

The main technologies employed include the Vacuum Insulation Panel (VIP) building insulation system, Low-e vacuum glazing with inter-pane motorized louvered shading system, ground source heat pumps, medium and high temperature solar collector, energy recovery system, liquid desiccant ventilation system, high efficiency luminaries and advanced lighting control, energy management system and building automation system, nearly zero energy building construction approaches and process management, indoor environmental quality control, and indoor PM2.5 prevention and mitigation.

https://www.construction21.org/data/sources/users/19348/23-china-academy-of-building-research-nearly-zero-energy-building--technology-details.docx

If you had to do it again?

The HVAC system could be simpler to achieve the same result

Building users opinion

An indoor environment satisfaction and quality oriented survey is carried out, about 60 questionnaire is distributed to the users. 55 feedback regarding to air environment of the office are received, and 71.4% people feel satisfied and normal satisfied about the air quality, 28.5% people feel very unsatisfied. 45 questionnaires is received regarding to indoor environment to work efficiency. 100% people found the current indoor environment promote work efficiency, and 28.58% people feel very satisfied.

Energy consumption

  • 75,00 kWhpe/m2.year
  • 300,00 kWhpe/m2.year
  • Primary energy needs

  • 22,00 kWhfe/m2.year
  • HVAC = 45% (Fan = 13%; Pump = 35 % ; HP = 52%)
    Plug = 31%
    Lighting = 18%
    Other= 6%

    Are shown in the attached files

Envelope performance

  • 1,20 W.m-2.K-1
  • 0,60

Real final energy consumption

    23,00 kWhfe/m2.year

    2 015

Systems

    • Geothermal heat pump
    • Low temperature floor heating
    • Others
    • Solar thermal
    • Heat pump
    • Solar Thermal
    • Other hot water system
    • Reversible heat pump
    • Gas absorption chiller
    • Geothermal heat pump
    • Others
    • Floor cooling
    • Double flow heat exchanger
    • Solar photovoltaic
    • Solar Thermal
    • Heat pump (geothermal)
  • 40,00 %
  • 7 heating source:
    Medium temp solar collector, high temp solar collector, GSHP, water loop heat pump, water cooled VRV, thermal storage for heating, external hot-water

    9 cooling source:
    Hot-water driven absorption, GSHP, water cooled VRV, water loop heat pump, thermal storage for cooling, evaporative cooling, liquid desiccant air-conditioning, magnetic suspension chiller

    6 HVAC terminal:
    Radiation ceiling, radiation floor, FCU, VRV, water loop heat pump, radiator

Smart Building

    A complete and precise building energy management system is constructed to monitor energy consumption and more importantly to guide optimize operation of the building. Building Automation system (BAS[2])(Figure 18-20) is constructed and integrated with BE

Water management

    Permeable floor is arranged in blank area of facial side of the building, constructed in with water permeable materials. It is very good for groundwater conservation and provides a very good rode environment in raining days especially in rainstorm weather.

Health & Comfort

    A roof garden was constructed on top of western side(Figure2-7), flowers and grass were planted inside, to provides good sight view and relax for employees, more importantly, it could decreases cooling load in summer season in some extent.

Product

    Ground source heat pump unit

    CLIMAVENETA

    AQS

    HVAC / Riscaldamento, Acqua calda sanitaria

    Cooling capacity is about 99.5kW, Power input is set at 18.6kW EER is about 5.3, Heating capacity is set about 103.7kW, power input is about 25.3kW, COP is 4.10

    Operation performance of the equipment is better than the marked value, and noise is small, operation is very stable.

Urban environment

The building is located nearby Beisanhuan Road in Beijing and is surrounded by high office buildings.

Building Environmental Quality

  • indoor air quality and health
  • comfort (visual, olfactive, thermal)
  • energy efficiency
  • renewable energies
​This project adopted high performance building envelope system to reduce its energy demand. Underground borehole and solar collectors serves the geothermal heat pumps and absorption chiller as the primary cooling and heating sources. Through smart use of renewable and traditional energy, building heating demand in winter is to be met with zero use of fossil fuel and cooling energy consumption in summer to be reduced by 50%.

Various building sensors and metering devices were installed to collect real-time operational data, providing data monitoring, analysis, and control improvement, with aid of EMS and BMS, to realize optimized operation and maximized energy conservation.

Contest categories

Smart building

Smart building

Users' Choice Award

Users' Choice Award

Green Building Solutions Awards 2016


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