Comparison and analysis of energy consumption of energy-efficient office buildings in different climate regions in China: case studies

Abstract

The purpose of this paper is to analyze the energy consumption (EC) and find out the determining factors of energy-efficient office building cases according to specific case studies in typical cities of different climate zones in China. The investigated building cases were located in four cities (Beijing, Ningbo, Nanjing and Shenzhen) of three architecture thermotechnical design zones (cold zone, hot summer and cold winter zone, hot summer and warm winter zone). The analysis indicates that the energy consumption index (ECI) of these four cases ranges from 41.06 to 74.23 kW·h/(m²·a). Besides, the outdoor climate can change the EC of air conditioning/heating systems, and further determine the monthly volatility of the total EC of the whole building.

Key words： energy-efficient building; breakdown energy consumption (EC); energy consumption index (ECI); different climate zone

References

1 Hong T Z, Jiang Y. Low energy healthy building and sustainable development. HVAC, 1996, 27(6): 28–31 (in Chinese)

2 Wan K K W, Li D H W, Liu D L, Lam J C. Future trends of building heating and cooling loads and energy consumption in different climates. Building and Environment, 2011, 46(1): 223–234

3 Ren H B, Zhou W S, Gao W J. Optimal option of distributed energy systems for building complexes in different climate zones in China. Applied Energy, 2012, 91(1): 156–165

4 Li D H W, Yang L, Lam J C. Impact of climate change on energy use in the built environment in different climate zones-A review. Energy, 2012, 42(1): 103–112

5 Lam J C, Wan K K W, Tsang C L, Yang L. Building energy efficiency in different climates. Energy Conversion and Management, 2008, 49(8): 2354–2366

6 Lam J C, Tsang C L, Yang L. Impacts of lighting density on heating and cooling loads in different climates in China. Energy Conversion and Management, 2006, 47(13,14): 1942–1953

7 Wan K K W, Li D H W, Yang L, Lam J C. Climate classifications and building energy use implications in China. Energy and Building, 2010, 42(9): 1463–1471

8 Xiao H, Wei Q P. Discussion on method of energy consumption survey and statistics in existing public buildings. HVAC, 2010, 40(3): 12–18 (in Chinese)

9 Yang L, Lam J C, Liu J P. Analysis of typical meteorological years in different climates of China. Energy Conversion and Management, 2007, 48(2): 654–668

10 Ministry of Housing and Urban-Rural Deveiopment of the People’s Republic of China, General Administration of Quality Supervision, Inspection and Quarantine. GB50176-93 Thermal Design Code for Civil Buildings. Beijing: China Architecture &Building Press, 1993

11 Ministry of Housing and Urban-Rural Deveiopment of the People’s Republic of China, General Administration of Quality Supervision, Inspection and Quarantine. GB50365-2005 Design Standard for Energy Efficiency of Public Buildings. Beijing: China Architecture &Building Press, 2005

12 Jiang Y, Liu X H, Xue Z F, Fu L. Study on ECC index of energy conversion system. Energy of China, 2004, 26(3): 27–31 (in Chinese)

13 Yi J, Yang X. In the energy analysis using the electricity equivalent method. Energy of China, 2010, 32(5): 5–11 (in Chinese)

14 Xue Z F. Energy Saving Diagnosis and Transformation for Existing Buildings. Beijing: China Architecture & Building Press, 2007 (in Chinese)