Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan

Hiromu Hiruma; Kan Shindo; Jun Shinoda; Ongun Berk Kazanci; Kaho Higuchi; Yoriaki Nitta; Kaho Kodama; Bjarne W. Olesen; Shin Ichi Tanabe

Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan

Hiromu Hiruma^*
, Kan Shindo
, Jun Shinoda
, Ongun Berk Kazanci
, Kaho Higuchi
, Yoriaki Nitta
, Kaho Kodama
, Bjarne W. Olesen
, Shin Ichi Tanabe

^*Corresponding author for this work

Waseda University

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

This study evaluated the potential for reducing operational carbon emissions by adjusting Thermally Active Building System (TABS) operation according to dynamic carbon intensity in Japan and Denmark. Dynamic energy simulations were conducted for a small-scale office building equipped with TABS, considering regional differences in renewable energy mixes. The results indicated that dynamic carbon intensity could serve as an effective basis for CO₂emission reduction control strategies. Controlling TABS during daytime hours when carbon intensity is relatively low could significantly contribute to emission reductions in Japan, where daily fluctuations in carbon intensity are substantial. In Denmark, the effectiveness of dynamic carbon intensity-based control was limited with the current strategy due to the consistently low carbon intensity and time-independent nature of wind power.

Original language	English
Title of host publication	Proceedings of Healthy Buildings Europe 2025
Editors	O.H. Wallevik, V.E. Merida, S.D. Sigurjonsdottir
Number of pages	7
Publisher	International Society of Indoor Air Quality and Climate
Publication date	2025
Pages	336-342
ISBN (Print)	9789935539762
Publication status	Published - 2025
Event	Healthy Buildings Europe 2025 - Reykjavík University, Reykjavík, Iceland Duration: 8 Jun 2025 → 11 Jun 2025

Conference

Conference	Healthy Buildings Europe 2025
Location	Reykjavík University
Country/Territory	Iceland
City	Reykjavík
Period	08/06/2025 → 11/06/2025

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Building Thermal Mass
Carbon Intensity
Dynamic Energy Simulation
Operational Carbon
Radiant System

OpenUrl availability

Full text

Cite this

Hiruma, H., Shindo, K., Shinoda, J., Kazanci, O. B., Higuchi, K., Nitta, Y., Kodama, K., Olesen, B. W., & Tanabe, S. I. (2025). Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan. In O. H. Wallevik, V. E. Merida, & S. D. Sigurjonsdottir (Eds.), Proceedings of Healthy Buildings Europe 2025 (pp. 336-342). International Society of Indoor Air Quality and Climate.

@inproceedings{771b6e586a67494b8465765b468b125e,

title = "Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan",

abstract = "This study evaluated the potential for reducing operational carbon emissions by adjusting Thermally Active Building System (TABS) operation according to dynamic carbon intensity in Japan and Denmark. Dynamic energy simulations were conducted for a small-scale office building equipped with TABS, considering regional differences in renewable energy mixes. The results indicated that dynamic carbon intensity could serve as an effective basis for CO2 emission reduction control strategies. Controlling TABS during daytime hours when carbon intensity is relatively low could significantly contribute to emission reductions in Japan, where daily fluctuations in carbon intensity are substantial. In Denmark, the effectiveness of dynamic carbon intensity-based control was limited with the current strategy due to the consistently low carbon intensity and time-independent nature of wind power.",

keywords = "Building Thermal Mass, Carbon Intensity, Dynamic Energy Simulation, Operational Carbon, Radiant System",

author = "Hiromu Hiruma and Kan Shindo and Jun Shinoda and Kazanci, \{Ongun Berk\} and Kaho Higuchi and Yoriaki Nitta and Kaho Kodama and Olesen, \{Bjarne W.\} and Tanabe, \{Shin Ichi\}",

year = "2025",

language = "English",

isbn = "9789935539762",

pages = "336--342",

editor = "O.H. Wallevik and V.E. Merida and S.D. Sigurjonsdottir",

booktitle = "Proceedings of Healthy Buildings Europe 2025",

publisher = "International Society of Indoor Air Quality and Climate",

note = "Healthy Buildings Europe 2025, HB2025 ; Conference date: 08-06-2025 Through 11-06-2025",

}

Hiruma, H, Shindo, K, Shinoda, J , Kazanci, OB, Higuchi, K, Nitta, Y, Kodama, K, Olesen, BW & Tanabe, SI 2025, Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan. in OH Wallevik, VE Merida & SD Sigurjonsdottir (eds), Proceedings of Healthy Buildings Europe 2025. International Society of Indoor Air Quality and Climate, pp. 336-342, Healthy Buildings Europe 2025, Reykjavík, Iceland, 08/06/2025.

Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan. / Hiruma, Hiromu; Shindo, Kan; Shinoda, Jun et al.
Proceedings of Healthy Buildings Europe 2025. ed. / O.H. Wallevik; V.E. Merida; S.D. Sigurjonsdottir. International Society of Indoor Air Quality and Climate, 2025. p. 336-342.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan

AU - Hiruma, Hiromu

AU - Shindo, Kan

AU - Shinoda, Jun

AU - Kazanci, Ongun Berk

AU - Higuchi, Kaho

AU - Nitta, Yoriaki

AU - Kodama, Kaho

AU - Olesen, Bjarne W.

AU - Tanabe, Shin Ichi

PY - 2025

Y1 - 2025

N2 - This study evaluated the potential for reducing operational carbon emissions by adjusting Thermally Active Building System (TABS) operation according to dynamic carbon intensity in Japan and Denmark. Dynamic energy simulations were conducted for a small-scale office building equipped with TABS, considering regional differences in renewable energy mixes. The results indicated that dynamic carbon intensity could serve as an effective basis for CO2 emission reduction control strategies. Controlling TABS during daytime hours when carbon intensity is relatively low could significantly contribute to emission reductions in Japan, where daily fluctuations in carbon intensity are substantial. In Denmark, the effectiveness of dynamic carbon intensity-based control was limited with the current strategy due to the consistently low carbon intensity and time-independent nature of wind power.

AB - This study evaluated the potential for reducing operational carbon emissions by adjusting Thermally Active Building System (TABS) operation according to dynamic carbon intensity in Japan and Denmark. Dynamic energy simulations were conducted for a small-scale office building equipped with TABS, considering regional differences in renewable energy mixes. The results indicated that dynamic carbon intensity could serve as an effective basis for CO2 emission reduction control strategies. Controlling TABS during daytime hours when carbon intensity is relatively low could significantly contribute to emission reductions in Japan, where daily fluctuations in carbon intensity are substantial. In Denmark, the effectiveness of dynamic carbon intensity-based control was limited with the current strategy due to the consistently low carbon intensity and time-independent nature of wind power.

KW - Building Thermal Mass

KW - Carbon Intensity

KW - Dynamic Energy Simulation

KW - Operational Carbon

KW - Radiant System

M3 - Article in proceedings

SN - 9789935539762

SP - 336

EP - 342

BT - Proceedings of Healthy Buildings Europe 2025

A2 - Wallevik, O.H.

A2 - Merida, V.E.

A2 - Sigurjonsdottir, S.D.

PB - International Society of Indoor Air Quality and Climate

T2 - Healthy Buildings Europe 2025

Y2 - 8 June 2025 through 11 June 2025

ER -

Application of Dynamic Carbon Intensity to TABS operation in Denmark and Japan

Abstract

Conference

UN SDGs

Keywords

OpenUrl availability

Fingerprint

Cite this