A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Estimating thermal performance and energy saving potential of residential buildings using utility bills
Highlights Utility bills are very useful to quantify the energy performance of residential buildings. The parameters of change-point models can help to identify the best type of energy saving opportunity. The most sensitive and informative parameter for heating energy saving is heating slope. Significant opportunities for heating energy saving are identified in residential buildings.
Abstract The objective of this study is to provide a practical method for estimating the energy saving potential of residential buildings using utility bills that are relatively easy to obtain from occupied buildings. The building characteristics and utility bills for three years, 2009–2011, were sampled from 128 apartment complexes, including 52,731 individual housing units. The utility billing data contain the monthly energy use of electricity, natural gas, and district heat for each complex. The energy uses of each complex were characterized using change-point linear regression models which described energy use as a function of monthly outdoor temperature and statistical parameters. The change-point models are statistically well fitted with actual monthly energy use, and the parameters of the models are capable of characterizing the energy use of residential buildings with hydronic radiant floor heating equipment. From the results, significant opportunities for space heating energy saving are identified in the sample complexes. The most sensitive and informative parameter for space heating energy saving is heating slope. The heating slope can represent the heat loss from the envelope and the efficiency of space heating. The method developed in this study can help to quantify the thermal performance of residential buildings, and also to identify the best type of energy efficiency opportunity.
Estimating thermal performance and energy saving potential of residential buildings using utility bills
Highlights Utility bills are very useful to quantify the energy performance of residential buildings. The parameters of change-point models can help to identify the best type of energy saving opportunity. The most sensitive and informative parameter for heating energy saving is heating slope. Significant opportunities for heating energy saving are identified in residential buildings.
Abstract The objective of this study is to provide a practical method for estimating the energy saving potential of residential buildings using utility bills that are relatively easy to obtain from occupied buildings. The building characteristics and utility bills for three years, 2009–2011, were sampled from 128 apartment complexes, including 52,731 individual housing units. The utility billing data contain the monthly energy use of electricity, natural gas, and district heat for each complex. The energy uses of each complex were characterized using change-point linear regression models which described energy use as a function of monthly outdoor temperature and statistical parameters. The change-point models are statistically well fitted with actual monthly energy use, and the parameters of the models are capable of characterizing the energy use of residential buildings with hydronic radiant floor heating equipment. From the results, significant opportunities for space heating energy saving are identified in the sample complexes. The most sensitive and informative parameter for space heating energy saving is heating slope. The heating slope can represent the heat loss from the envelope and the efficiency of space heating. The method developed in this study can help to quantify the thermal performance of residential buildings, and also to identify the best type of energy efficiency opportunity.
Estimating thermal performance and energy saving potential of residential buildings using utility bills
Park, J.S. (author) / Lee, Suk Joo (author) / Kim, Kee Han (author) / Kwon, Kyung Woo (author) / Jeong, Jae-Weon (author)
Energy and Buildings ; 110 ; 23-30
2015-10-17
8 pages
Article (Journal)
Electronic Resource
English
Energy saving and storage in residential buildings
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