Abstract
In an effort to improve the energy efficiency of existing buildings, it is necessary to first evaluate the energy performance of those buildings. Since it is difficult to obtain detailed information on existing buildings, the challenge is how to conduct reliable energy performance assessments with this limited information. As a result, many countries have adopted evaluation systems based on measured energy consumption data for existing buildings. This study aims to analyze the building energy consumption and characteristics using Korea’s national building database and provide an energy performance benchmark for continuous management of the energy performance of existing buildings. We analyzed the relationship between the basic statistical characteristics of the information collected from the national integrated energy database and energy consumption. The total floor area was found to be closely related to energy consumption, and various regression analysis methods were applied and compared to develop a benchmark to explain the trends of energy consumption according to the increase in total floor area. Finally, the developed benchmarks were used to evaluate energy consumption and examine the feasibility of the benchmarks.
Highlights
Building energy benchmarking is a mechanism to evaluate and compare the energy performance of a building, relative to other similar buildings or a reference building in order to give stakeholders information and motivate energy retrofits [1,2,3]
In order to improve the physical performance of existing buildings, it is necessary to first evaluate
In order to improve the physical performance of existing buildings, it is necessary to first theevaluate current the energy consumption level by considering the factors the thatfactors affect energy consumption, current energy consumption level by considering that affect energy in consumption, addition to physical performance
Summary
Building energy benchmarking is a mechanism to evaluate and compare the energy performance of a building, relative to other similar buildings or a reference building in order to give stakeholders information and motivate energy retrofits [1,2,3]. The energy benchmark can be defined as a representative value of the energy performance of a peer group with similar properties to a given building. It is used as a comparison criterion for evaluating whether the building performs well in terms of energy consumption. Comparing energy consumption with a benchmark can help determine whether a given building consumes more or less energy compared to its physical performance. Collecting and managing an array of data for many buildings could prove to be problematic It is an issue facing many countries that are performing benchmarking [3,4,5]. Energy consumers may be more interested in using electricity or gas than greenhouse gas (GHG) emissions
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