Contractor

Name : 荣华建设集团有限公司

Contact : 刘磊 [email protected]

 http://www.lxjz.com/

Construction Manager

Name : 青岛被动屋工程技术有限公司，中德联合集团，青岛中德生态园

Contact : 刘磊 [email protected]

 http://www.sinogerman-ecopark.com/

Stakeholders

Function : Designer

中国建筑科学研究院有限公司

于震 [email protected]

 http://www.cabr.com.cn


Conceptual design of architecture; Conceptual design of interior; Conceptual design of landscape; ultra-low energy electromechanical system design; Preliminary design and construction drawing design; PHI certified consultant; Green building certified cons

RONGEN TRIBUS VALLENTIN GmbH

Sven Ring [email protected]

Conceptual design of architecture; Conceptual design of ultra-low energy electromechanical system; PHI certified consultant.

Owner approach of sustainability

Passive House Technology Center in Sino-German Ecopark is a key project of China-Germany passive house cooperation which signed by Premier Li Keqiang and Prime Minister Merkel. the project’s design and passive ultra-low energy green building certification consultant are completed by China Academy of Building Research and the German ROA firm, which is the most Representative passive house project in China. It has been certified by PHI and China Passive Nearly zero Energy Building.

1) The project adopts the German passive house design concept, which can effectively improve the indoor environment quality and reduce energy consumption. It is the first public building in the cold climate zone to meet China's passive ultra-low energy green building standards;

2) The accumulated cooling and heat load of the air-conditioning and heating period and air tightness meet the German passive house standard, and the relative energy saving rate exceeds 85%;

3) In terms of architectural design, the project combines the terrain and geomorphology to reasonably set the building space and reduce the body shape coefficient. It is equipped with a natural lighting, ventilated atrium, with a self-shading structure, and implements the passive concept of “active firstly, passive optimizely”.

4) The whole process service is adopted without heat bridge, airtight fine design and design and construction. The air tightness test result of the project is N50≤0.45.

5) Uncontrolled power chilled beam and dual heat recovery new fan unit technology with independent control of temperature and humidity bring significant energy saving benefits and high indoor comfort standards.

6) The transmission and distribution system is optimized to the ultra-low resistance design, which greatly reduces the energy consumption of the pump.

Architectural description

As a passive green energy-saving building, this project strives to become a passive green building demonstration project in Qingdao. It draws on the natural forms such as ocean, river and pebbles in the planning and design concept, and adopts the design principle of building, indoor and landscape integration as energy-conservation services.

Architectural design

The pebble shape in harmony with surrounding environment and greening. The main lighting surface of the building faces the southeast facing green space, maximizing the illumination and landscape orientation;

At the same time, the building and the semi-subsidence square are facing southeast (Qingdao summer dominant wind direction), which is convenient for discharging of waste heat rapidly; the low-sloping sun in winter allows the building to make maximum use of sunlight while keep the northwest wind from the building and square.

Interior design

Adopting green design concept of low energy consumption;

The sunlight is introduced into the room from the skylight for sufficient illumination, and the room around the atrium can be lit through the high window;

The atrium is made of transparent glass slats for light transmission to save energy.

Landscape Design

The streamlined green landscape design not only improves the surrounding micro-environment of the building but also plays a good guiding role in the functional streamline. To create a “watching and being watched” interaction between architecture and landscape, nature and architecture are symbiotic, and the building is perfectly integrated into the environment;

Atrium landscape design integrates indoor part and outdoor part. The project introduces the greening into the room, which can adjust the indoor microclimate and reduce some energy consumption.

Building users opinion

Satisfaction survey was conducted for users working in the building: lighting environment satisfaction was 100%, air quality satisfaction was 95.24%, thermal environment satisfaction was 85.72%, acoustic environment satisfaction was 90.48%, and the calculated PMV value was calculated. -0.08, the PPD value is 5.14%. The main reason for dissatisfaction is that indoor temperature and humidity in summer are slightly uncomfortable while the overall satisfaction level is good.

Energy consumption

• Primary energy need : 96,69 kWhpe/m².年
• Primary energy need for standard building : 493,50 kWhpe/m².年

Calculation method : Other

• Final Energy : 28,99 kWhfe/m².年
Breakdown for energy consumption :

HVAC: 20.30 Kwh/m2/year
General lighting, plug equipment: 3.55 Kwh/m2/year
General power equipment: 1.93 Kwh/m2/year
Others: 6.45 Kwh/m2/year

Envelope performance

• Envelope U-Value : 0,50 W.m^-2.K^-1
More information :

1. Exterior wall insulation adopts rock wool insulation material which 250mm thick, fire rated grade A and thermal conductivity 0.035
2. heat Heat transfer coefficient:
Exterior Wall: 0.17 W/m2K Roof: 0.12 W/m2K Overhead or outer-load floor slabs：0.19W/m2K
3.Windows:
The aluminum-clad wood (outer aluminum inner wood) triple-pane Low-E vacuum glazing, which u value is 0.8 W/m2K.
Opening method: flat open, overhang. The airtightness of the outer door and window products shall not be less than 8 grades, the water tightness grade shall not be less than 6 grades, and the wind pressure resistance performance grade shall not be less than 9 grades, and the product selection shall meet the national standards.
The sealing performance and resilience performance of German Schlegel strips is three times that of ordinary EPDM strips, which can achieve better insulation and sound insulation during installation.
4. The airtightness of the project is completely in accordance with the requirements of airtight design and construction in Technical Guidance for Passive Ultra Low Energy Green Building(Residential buildings). Air tightness is critical to achieving ultra-low energy goals. High-quality air tightness can reduce the cold air infiltration in winter, reduce the additional cooling caused by uncontrolled ventilation in summer, avoid the mold, condensation and damage of building moisture, reduce outdoor noise and air pollution, and improve the quality of life of the occupants. High-quality airtightness can reduce the cold air infiltration in winter, reduce the extra cooling caused by uncontrolled ventilation in summer, avoid the mold, condensation and damage of building moisture, reduce outdoor noise and air pollution, and improve people’s residential quality.
The position of the airtight layer is clearly marked in the architectural design drawing, and the airtight layer is continuous and surrounds the entire outer protective structure. Simple styling and node design can reduce or avoid nodes that are difficult to handle with air tightness. Using external doors and windows with high airtightness. The plaster layer, the hard material plate (such as MDF, stone), and the airtight film are selected to form an airtight layer. Choosing the applicable airtight material for node air tightness treatment, such as compact and complete concrete, airtight film, special expansion sealing strip, special airtight treatment coating and other materials. Node design is performed on parts that are prone to air tightness such as door holes, window holes, electrical junction boxes, and pipeline penetrations.
5. motorized Motorized external shading system is installed in the eastern, western and southern side of the building.

• Building Compactness Coefficient : 0,17

Indicator : EN 13829 - n50 » (en 1/h-1)

• Air Tightness Value : 8,00

Real final energy consumption

Real final energy consumption/m2 : 32,23 kWhfe/m².年

Year of the real energy consumption : 2 017

Systems

Heating system :
• Geothermal heat pump
Hot water system :
• Heat pump
• Solar Thermal
Cooling system :
• Geothermal heat pump
Ventilation system :
• Double flow heat exchanger
Renewable systems :
• Solar photovoltaic
• Heat pump (geothermal)
• Renewable energy production : 10,00 ％

Smart Building

BMS :

Siemens Desigo CC, building automation system, air quality and detailed monitoring system

Users’ opinion on the Smart Building functions :

Through the questionnaire survey on the control system satisfaction of the management staff in the building: Siemens Desigo CC software control satisfaction 94.7%, TRA control satisfaction 91.9%, intelligent green leaf board control satisfaction 90.4%, the main reason for dissatisfaction is that the intelligent control is a bit lagging. In general, the intelligent control system has reasonable control and stable state, which can achieve the user's control demand effect in time.

Urban environment

This building provides meeting rooms, exhibition space construction, restaurants and other external services to the outside.

This building where the region has a number of public bus lines service facilities, soccer fields, shopping malls, cafes and so on.

Land plot area

Land plot area : 4 843,00 m²

Green space

Green space : 1 932,72

Parking spaces

The parking lot is located on the second basement.

Product

ventilation central unit with heat recovery



爱科空气处理技术有限公司

江苏省太仓市经济开发区青岛西路5号

 http://www.al-ko.cn


Product category :

Ventilation central unit with heat recovery，medium efficiency filter，the enthalpy efficiency is 82.4%, supply air volume 10000m3/h，exhaust air volume 9000m3/h, static pressure 1233Pa, pressure difference 206Pa, sound level 90.3dB（A）.

In the actual construction and use process, the design, construction, development and operation units all believe that the equipment and facilities (including HVAC equipment, photovoltaic power generation, insulation materials) in the building are stable, efficient, and can meet the needs of users.

Ground source heat pump



克莱门特捷联制冷设备有限公司

上海市星火开发区白云路88号

 http://www.climaveneta.com.cn


Product category :

Ground source heat pump, two-screw compressor, refrigerant: R134a, cooling capacity/COP: 332.1kW/6.15，heat capacity/COP: 265.4kW/3.97, maximum input power: 95.8kW, HP: 2.8MPa, LP: 2.0MPa.

In the actual construction and use process, the design, construction, development and operation units all believe that the equipment and facilities (including HVAC equipment, photovoltaic power generation, insulation materials) in the building are stable, efficient, and can meet the needs of users.

PV power generation



正泰太阳能科技有限公司

浙江省杭州市滨江区江陵路211号

 http://1672270.b2b.tfsb.cn


Product category :

PV power generation, more than 200 polycrystalline silicon battery modules CHSM 6610P-260 Wp are arranged on the roof, the peak power per component is 260 Wp. The total capacity of installed PV is about 52 kWp, and the average annual power generation is 48623 kWh, accounting for 10-15% of the total passive electricity consumption.

In the actual construction and use process, the design, construction, development and operation units generally believe that the overall operation of the PV power generation equipment is stable and can meet the needs of users.

Rock wool board



洛科威防火保温材料有限公司

广东省广州经济技术开发区永和区泰华街3号

 http://www.rockwool.com.cn


Product category :

Rock wool board, density 121kg/m3, thermal conductivity 0.035W/(mK), mass moisture absorption rate 0.8%, water repellency rate 99.5%, total combustion heat value PCS1.7MJ/kg, combustion performance meets Class A1 requirements of Class A materials.

In the actual construction and use process, the design, construction, development and operation units generally believe that the rock wool board insulation performance is efficient and good, and can meet the needs of users.

Construction and exploitation costs

• Renewable energy systems cost : 6 800 000,00 ¥
• Cost of studies : 10 000 000 ¥
• Total cost of the building : 130 700 000 ¥
• Subsidies : 5 000 000 ¥

Energy bill

• Forecasted energy bill/year : 240 000,00 ¥

Real energy cost/m2 : 17.43

Real energy cost/Work station : 480

Building Environmental Quality

Life Cycle Analysis

Water management

• Consumption from water network : 3 640,00 m³

Water Consumption/m2 : 0.26

Water Consumption/Work station : 7.28

Indoor Air quality

Indoor CO2 test concentration ( mg/m3 ): 452.75 Ppm

Indoor TVOC test concentration ( mg/m3 ): 368.42μg/m3

Indoor PM2.5 test concentration ( μ g /m3 ): 7.07 μg/m3

Comfort

Health & comfort :

Average indoor temperature in January： 21.0℃     

Average indoor humidity in January：40%

Average indoor temperature in July： 25.0℃    

Average indoor humidity in July：60%

Acoustic comfort :

Considering the influence of noise on the use function in the layout of the building, the project deliberately makes the equipment room with strong noise sources away from the office and display apartment. The standard structure of the interior of the building is from top to bottom: solid wood floor or rubber board or ceramic floor tile, floating leveling layer, impact sound insulation layer, reinforced concrete floor, plastering layer, ceiling. The standard structure of the internal partition wall is: floated coat, concrete small hollow block wall, floated coat. Its structural thickness is: floated coat (5mm), aerated concrete block (190mm), floated coat (5mm). Exterior wall is constructed as an external thermal insulation plastering system. The standard structure of the exterior walls is from the inside to the outside: inner floated coat, concrete small hollow block wall, outer insulation layer and outer floated coat. The structural thickness is: inner floated coat (15mm), concrete small hollow block wall (190mm), two layers of graphite polystyrene board (250mm), outer floated coat (20mm). The project should meet the energy conservation standards of passive house in Germany, and the outer windows should reach the ultra-high thermal insulation performance of passive external windows. Therefore, The owner finally selected a PHI certified passive curtain wall and a certified passive window produced by Harbin SAYYES Windows Stock Co,. Ltd. The passive curtain wall model is SAYYES Pcw70, and the passive window model is SAYYES PASSIVE120. Their glass and whole window weighting sound insulation (Rw) should be no less than 42dB according to the manufacturer's product performance index, and the weighted sound insulation + The traffic noise spectrum correction amount (Rw+Ctr) should be no less than 37dB. These indicators ensure the sound insulation performance of the exterior windows of high-demand office buildings, as well as the airborne sound insulation of the exterior windows of the super-class hotel buildings.

The internal noise source of the project is the machine room. The equipment room of all kinds of equipment is mainly distributed in the underground floor and the second floor, without obvious noise interference to the main functional areas. From the perspective of the layout position of the building, the distribution room and the return air duct are far away from the main function room, and do not cause noise interference to the main function room.

The project is a passive ultra-low energy demonstration project. According to Technical Guidance for Passive Ultra Low Energy Green Building, nodes about the water supply and drainage pipelines pass through floors and walls learn from the German experience for sound and noise reduction treatment: the outer side of pipeline is wrapped with sound insulation rubber and plastic materials; Set the sound insulation rubber in the place where the pipe clamp is in contact with the water supply and drainage pipe; the water supply and drainage pipe through the wall and the floor penetration part are made of polyurethane material for Non-thermal bridge and noise reduction.

The drainage pipes are all made of silencer pipes to reduce noise interference.

GHG emissions

• GHG in use : 29,94 KgCO₂/m²/年
Methodology used :

Guidelines for General Calculation Methods for Carbon Emissions in Chinese buildings

• GHG before use : 294,30 KgCO₂ /m²
• Building lifetime : 50,00 年

, ie xx in use years : 9.83

• GHG Cradle to Grave : 1 526,00 KgCO₂ /m²

Guidelines for General Calculation Methods for Carbon Emissions in Chinese buildings