A study on the effect of facility renewal in small and mid-sized office buildings oriented to net-zero energy buildings-Measuring the effect of setting a cool space in summer-

S. Kouroki, D. Sumiyoshi, Y. Choi

Research output: Contribution to journalConference article

Abstract

Recently, in Japan, ZEB has received attention since the need for energy self-sufficiency in buildings has been strongly recognized from the viewpoint of energy security. However, in small and mid-sized buildings with huge stocks, efforts are still small due to factors such as uncertainty in design methods and costs. In this paper, we verify the effect of cool spaces installed in entrances as one of the installation facilities applicable to small and mid-sized stock buildings. A summer experiment on cool space was conducted. From the questionnaire, we confirmed the improvement of thermal sensation and thermal comfort after entering an office room using a cool space. Moreover, using the operation data of air conditioning, the influence on the power consumption by installing a cool space was analysed. As a result, there was no reduction in the energy consumption of the entire building. However, in the office with a high cool-space utilization rate, we confirmed that the air-conditioning power consumption of the whole day has been reduced by 7.3%. These results show that cool space has the effect of improving comfort, and if more workers use it, an energy saving effect for the whole building can be expected.

Original languageEnglish
Article number012047
JournalIOP Conference Series: Earth and Environmental Science
Volume294
Issue number1
DOIs
Publication statusPublished - Aug 9 2019
EventSustainable Built Environment Conference 2019 Tokyo: Built Environment in an Era of Climate Change: How Can Cities and Buildings Adapt?, SBE 2019 Tokyo - Tokyo, Japan
Duration: Aug 6 2019Aug 7 2019

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summer
energy
air conditioning
self sufficiency
design method
effect
measuring
office
cost
experiment
consumption

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

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abstract = "Recently, in Japan, ZEB has received attention since the need for energy self-sufficiency in buildings has been strongly recognized from the viewpoint of energy security. However, in small and mid-sized buildings with huge stocks, efforts are still small due to factors such as uncertainty in design methods and costs. In this paper, we verify the effect of cool spaces installed in entrances as one of the installation facilities applicable to small and mid-sized stock buildings. A summer experiment on cool space was conducted. From the questionnaire, we confirmed the improvement of thermal sensation and thermal comfort after entering an office room using a cool space. Moreover, using the operation data of air conditioning, the influence on the power consumption by installing a cool space was analysed. As a result, there was no reduction in the energy consumption of the entire building. However, in the office with a high cool-space utilization rate, we confirmed that the air-conditioning power consumption of the whole day has been reduced by 7.3{\%}. These results show that cool space has the effect of improving comfort, and if more workers use it, an energy saving effect for the whole building can be expected.",
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