The operational performance of “net zero energy building”: A study in China

Zhou, Zhihua; Feng, Lei; Zhang, Shuzhen; Wang, Chendong; Chen, Guanyi; Du, Tao; Li, Yasong; Zuo, Jian

doi:10.1016/j.apenergy.2016.05.093

Cited by 110 publications

(36 citation statements)

References 76 publications

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“…Some further research focus on buildings that belong to the tertiary sector. As stressed by Zhou et al [18], most of these papers about nZEBs are simulation and theoretical approaches. Their study on an existing office building in China derives a total energy consumption of 75.9 kWh/m 2 (316 MWh for the whole building), being the power generated through a photovoltaic plant only 106 MWh.…”

Section: Introductionmentioning

confidence: 99%

Energy Analysis at a Near Zero Energy Building. A Case-Study in Spain

et al. 2018

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This paper develops an energy analysis for an existing near Zero Energy (nZEB) and Zero Carbon Emissions building called LUCIA, located at the university campus in Valladolid (Spain). It is designed to supply electricity, cooling and heating needs through solar energy (Photovoltaic Systems, PV), biomass and an Earth-Air Heat Exchanger (EAHE), besides a Combined Heat Power (CHP). It is currently among the top three buildings with the highest LEED certification in the World. The building model is simulated with DesignBuilder version 5. The results of the energy analysis illustrate the heating, cooling and lighting consumptions expected, besides other demands and energy uses. From this data, we carried out an energy balance of the nZEB, which will help to plan preventive actions when compared to the actual energy consumptions, improving the management and control of both the building and its systems. The primary energy indicator obtained is 67 kWh/m 2 a year, and 121 kWh/m 2 a year for renewable energy generation, with respect to 55 kWh/m 2 and 45 kWh/m 2 set as reference in Europe. The Renewable Energy Ratio (RER) is 0.66. These indicators become a useful tool for the energy analysis of the nZEB according to the requirements in the European regulations and for its comparison with further nZEB.

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Section: Introductionmentioning

confidence: 99%

Energy Analysis at a Near Zero Energy Building. A Case-Study in Spain

et al. 2018

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“…The local electricity tariff is $0.14/kWh. A simple payback method was adopted [38]: Additional 161 MWh capacity is needed to balance out the energy use. There is a parking lot on the south of the building with an area of approximately 1000 m 2 .…”

Section: Preliminary Economy Analysismentioning

confidence: 99%

Assessment of the Potential of High-Performance Buildings to Achieve Zero Energy: A Case Study

et al. 2019

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Buildings that are designed with aggressive energy performance targets are defined broadly in this study as high-performance buildings. As the technology advances, some of these buildings have the potential to become zero-energy ready through the adoption of cost-effective measures, such as retro-commissioning and occupant behavior techniques. This study demonstrated the viability of an office building to achieve the zero-energy goal and intended to engage the owners of similar facilities. The case building was designed as a very low-energy building with an energy use intensity (EUI) goal of 42 kWh/(m2 a), and the actual EUI was 23.9 kWh/(m2 a). The calibrated simulation approach was employed in the study, and the results indicated that the case building can achieve the zero-energy goal by optimizing the controls of the HVAC (Heating, Ventilation and Air Conditioning) system, changing the occupant behavior and improving the performance of the photovoltaic system.

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“…According to the design strategy for nZEBs, the remaining energy needs can be realized by using other renewable technologies [11,33]. Solar power has gained wider implementation in nZEB due to its accessibility and easy integration with existing building systems [34], while rooftop PV modules have great potential to become the primary way of harnessing solar energy, reducing the additional energy demand by generating electricity, which is clearly the biggest beneficiary [71], and generating electricity for educational buildings that can be used directly for the classroom and corridor lighting. Combined with this case study, a brief discussion on the possibility of realizing nZEB in HS/CW and HS/WW regions by combining PV technology is conducted.…”

Section: Establishment Of the Recommended Technology Selection Systemsmentioning

confidence: 99%

“…In addition, Dell'Osso et al [32] also studied natural ventilation as a low-cost passive strategy which realizes the exchange of indoor and outdoor air by pressure or temperature differences to achieve thermal comfort and energy savings. Renewable energy plays a crucial role for nZEBs, which can be used to minimize the primary energy consumption or offset the remaining energy needs [33,34]. Concentrated solar photovoltaic (PV) and enhanced geothermal energy are regarded as renewable technologies with high potential as suitable substitutes for fossil fuels [35].…”

Section: Introductionmentioning

confidence: 99%

A Study on Energy-Saving Technologies Optimization towards Nearly Zero Energy Educational Buildings in Four Major Climatic Regions of China

Zhao

2019

Energies

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An educational building is a kind of public building with a high density of occupants and high energy consumption. Energy-saving technology utilization is an effective measure to achieve high-performance buildings. However, numerous studies are greatly limited to practical application due to their strong regional pertinence and technical simplicity. This paper aims to further optimize various commonly used technologies on the basis of the current national standards, and to individually establish four recommended technology selection systems corresponding to four major climatic regions for realizing nearly zero energy educational buildings (nZEEBs) in China. An educational building was selected as the case study. An evaluation index of energy-saving contribution rate (ECR) was proposed for measuring the energy efficiency of each technology. Thereafter, high energy efficiency technologies were selected and implemented together in the four basic cases representing different climatic regions. The results showed that the total energy-saving rate in severe cold regions increased by 70.74% compared with current national standards, and about 60% of the total energy-saving rate can be improved in cold regions. However, to realize nZEEBs in hot summer and cold winter regions as well as in hot summer and warm winter regions, photovoltaic (PV) technology needs to be further supplemented.

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The operational performance of “net zero energy building”: A study in China

Cited by 110 publications

References 76 publications

Energy Analysis at a Near Zero Energy Building. A Case-Study in Spain

Energy Analysis at a Near Zero Energy Building. A Case-Study in Spain

Assessment of the Potential of High-Performance Buildings to Achieve Zero Energy: A Case Study

A Study on Energy-Saving Technologies Optimization towards Nearly Zero Energy Educational Buildings in Four Major Climatic Regions of China

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