scholarly journals Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6950
Author(s):  
Chenfei Liu ◽  
Stephen Sharples ◽  
Haniyeh Mohammadpourkarbasi
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Building Energy ◽  
Low Energy ◽  
Cold Winter ◽  
Winter Climate ◽  
Climate Region ◽  
Low Energy Consumption ◽  
Insulation Performance

Passivhaus EnerPHit is a rigorous retrofit energy standard for buildings, based on high thermal insulation and airtightness levels, which aims to significantly reduce building energy consumption during operation. However, extra retrofit materials are required to achieve this standard, which raises a contradiction between how to balance the environmental impacts of the retrofitting material inputs and extremely low energy consumption after retrofit. This motivated the analysis in this paper, which aimed to evaluate the possibilities of reducing the required retrofitting material inputs when trying to achieve the EnerPHit energy standard using a typical suburban dwelling in China’s hot summer–cold winter climate region as a case study. Firstly, how the insulation performance of each envelope component affected the building’s energy consumption was analysed. Based on this, sensitivity simulations of combinations of different insulation levels with different fabric components were investigated under four scenarios of insulation levels, airtightness and glazing choice. The final proposed retrofitting plans achieved the EnerPHit standard with insulation materials’ savings between 18% to 58% compared to a baseline retrofit plan, and this led, in turn, to 3.9 to 12.6 tonnes of carbon reductions. Moreover, an energy-saving of 87% in heating and 70% in cooling was achieved compared with the pre-retrofit dwelling.

The Strategies of Passive Energy-Efficiency Design in Low Energy Building

2013 ◽  
Vol 368-370 ◽  
pp. 1318-1321
Author(s):  
Xin Bin Wang ◽  
Jia Ping Liu ◽  
Yu Fu
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Conservation ◽  
Air Conditioning ◽  
Influence Factors ◽  
Building Design ◽  
Building Energy ◽  
Low Energy ◽  
Paper Briefly ◽  
Low Energy Consumption

This paper briefly analyzes the structure and conservation approaches of building energy consumption, analyzes the forming reason and influence factors of heating and air-conditioning energy consumption and proposes the passive energy conservation designing strategies of low energy consumption building. Through the passive methods of building design, envelop enclosure and planning landscape, the goal of last year building low energy conservation can be achieved.

scholarly journals A low power data transfer and fusion algorithm for building energy consumption monitoring

2019 ◽  
Vol 14 (3) ◽  
pp. 426-431 ◽  
Author(s):  
Cuimin Li ◽  
Dandan Shen ◽  
Lei Wang
Keyword(s):  
Energy Consumption ◽  
Data Transmission ◽  
Building Energy ◽  
Reduction Factor ◽  
Low Energy ◽  
Small Data ◽  
Building Energy Consumption ◽  
Fusion Algorithm ◽  
Consumption Data ◽  
Low Energy Consumption

Abstract Building Energy Internet of Things could collect and analyse various types of building energy consumption data in real time by means of low-energy consumption and high-precision sensing technology. In this paper, a low-energy consumption data transmission and fusion algorithm SMART-RR (Slice Mix Agg RegaTe-Repeatablibity Reduction) is proposed. Taking advantage of the periodic repeatability and data redundancy of building energy consumption data, a data fusion strategy with unequal long time intervals and adding repeatability reduction factor is proposed. The simulation results show that SMART-RR algorithm is a low-energy data transmission and fusion algorithm with small data traffic, high privacy protection and high accuracy.

The Thermal Insulation Performance of Envelope Construction of Residential Housing – A Case Study of Detached Houses in Yilan, Taiwan

2014 ◽  
Vol 909 ◽  
pp. 450-454
Author(s):  
Hung Ren Hsieh ◽  
Chih Hao Lee
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Building Energy ◽  
Residential Housing ◽  
Improvement Project ◽  
Steel Framing ◽  
Building Energy Saving ◽  
The Common ◽  
Insulation Performance

This research aims to study the design and thermal insulation performance of detached houses in Taiwan through the analysis of 55 detached houses. The research shows that 85% of detached houses are built using reinforced concrete (RC) construction, and the rest mostly using lightweight steel framing (LSF) construction. The thermal insulation performance of envelope construction of RC housing is poorer than LSF housing. More than 80% of the case study sample could not meet the roof thermal insulation requirements of Taiwans latest regulations on housing building energy saving. The most commonly used thermal insulation materials are polystyrene board, glass wool and rock wool, which are nearly all applied in LSF housings for the internal thermal insulation layer or the structural body layer of envelope construction. Polystyrene board has the widest range of use, including both internal and external thermal insulation layers of the envelope construction. If improving thermal insulation performance of the common envelope construction concluded from case study samples to meet Taiwans latest regulations on housing building energy saving, of the savings on air-conditioning energy during the summer could potentially be 11.5%. However, above improvement project is not economically beneficial due to the too long payback period.

Energy Audits and Energy-Saving Potential Analysis of the Science Building at Xi'an Jiaotong-Liverpool University in Suzhou

2013 ◽  
Vol 291-294 ◽  
pp. 1044-1049 ◽  
Author(s):  
Wen Long Jing ◽  
Mohamed Nayel
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Building Energy ◽  
Building Energy Consumption ◽  
Energy Audit ◽  
Potential Analysis ◽  
Energy Saving Potential ◽  
Science Building ◽  
Energy Audits

A building energy audit was developed through a case study on the science building at Xi'an Jiaotong-Liverpool University (XJTLU). The annual energy consumption of the building was surveyed over a two year period. The building energy consumption characteristics were displayed and the corresponding energy saving potential was analyzed. Additionally, an energy saving methods is proposed based on the characteristics of the target building.

scholarly journals Creating a low carbon tourism community by public cognition, intention and behaviour change analysisa case study of a heritage site (Tianshan Tianchi, China)

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Wenjie Wu ◽  
Xiaolei Zhang ◽  
Zhaoping Yang ◽  
Geoffrey Wall ◽  
Fang Wang
Keyword(s):  
Energy Consumption ◽  
Behaviour Change ◽  
Low Energy ◽  
Low Carbon ◽  
Change Analysis ◽  
Heritage Site ◽  
Low Energy Consumption ◽  
Tourism Community

AbstractThis study attempts to explore the establishment of a low-carbon tourism community by public cognition, intention, and behaviour change analysis in a case study of a heritage site, China. Low carbon tourism advocates a way of travel with low energy consumption, low pollution and low CO

Sign in / Sign up

Export Citation Format

Share Document