Chapter 37
Evaluation and Improvement Proposals
for a Business Facility Solar
and Ground-Heat Hybrid Heat Supply
System
Daiki Yoshidome, Ryo Kikuchi, Andante Hadi Pandyaswargo,
and Hiroshi Onoda
Abstract In this study, we proposed improvements based on actual measured data
of a hybrid heat supply system that uses solar heat and ground heat as the heat
sources of a restaurants complex in Honjo city, Saitama, Japan. Our evaluation from
the actual monitoring measurements showed that the solar heat collection efficiency
was 50–60%. The geothermal Heat Pump’s Coefficient of Performance decreased
significantly in the summer. We propose to set the heat insulation and burial depth
of the piping from the ground heat collection to the heat pump and recommends five
units of 5 units of solar heat collectors as the most ideal scenario.
Keywords Heat supply system · Solar heat · Ground heat · Hybrid heat supply
system · Collaborative energy business · Energy efficiency
37.1 Introduction
In line with the adoption of the Paris Agreement, Japan has set a number of greenhouse
gas reduction targets. For example, in the civil society sector, it has set a target of a
40% greenhouse gas reduction by fiscal 2030 with 2013 baseline. In the civil society
sector, businesses accounts for more than 60% of emissions. This is because the
demand for energy is increases as constructions of floor space increases. This is
closely related to the use of air conditioners especially during severe winter seasons
and intense heat in the summer season. Although renewable energy obtained from
the sun is suitable for local production for local consumption, and various uses such
as electric power, hot water supply, and air conditioning are mentioned, (Horiike and
Nagano 2015; Maeta and Ozaki 2013; Herrando and Markides 2016; Hirata et al.
2016) there are challenges associated to such systems. For example, there are cases
of system capacity excessiveness or insufficiency. These are caused by insufficient
data recording and analysis. Such problems often lead to failure of system function.
D. Yoshidome (B) · R. Kikuchi · A. H. Pandyaswargo · H. Onoda
Graduate School of Environment and Energy Engineering, Waseda University, Tokyo, Japan
e-mail: ysdm.3435@akane.waseda.jp
© Springer Nature Singapore Pte Ltd. 2021
Y. Kishita et al. (eds.), EcoDesign and Sustainability II, Sustainable Production, Life
Cycle Engineering and Management, https://doi.org/10.1007/978-981-15-6775-9_37
557
Evaluation and Improvement Proposals
for a Business Facility Solar
and Ground-Heat Hybrid Heat Supply
System
Daiki Yoshidome, Ryo Kikuchi, Andante Hadi Pandyaswargo,
and Hiroshi Onoda
Abstract In this study, we proposed improvements based on actual measured data
of a hybrid heat supply system that uses solar heat and ground heat as the heat
sources of a restaurants complex in Honjo city, Saitama, Japan. Our evaluation from
the actual monitoring measurements showed that the solar heat collection efficiency
was 50–60%. The geothermal Heat Pump’s Coefficient of Performance decreased
significantly in the summer. We propose to set the heat insulation and burial depth
of the piping from the ground heat collection to the heat pump and recommends five
units of 5 units of solar heat collectors as the most ideal scenario.
Keywords Heat supply system · Solar heat · Ground heat · Hybrid heat supply
system · Collaborative energy business · Energy efficiency
37.1 Introduction
In line with the adoption of the Paris Agreement, Japan has set a number of greenhouse
gas reduction targets. For example, in the civil society sector, it has set a target of a
40% greenhouse gas reduction by fiscal 2030 with 2013 baseline. In the civil society
sector, businesses accounts for more than 60% of emissions. This is because the
demand for energy is increases as constructions of floor space increases. This is
closely related to the use of air conditioners especially during severe winter seasons
and intense heat in the summer season. Although renewable energy obtained from
the sun is suitable for local production for local consumption, and various uses such
as electric power, hot water supply, and air conditioning are mentioned, (Horiike and
Nagano 2015; Maeta and Ozaki 2013; Herrando and Markides 2016; Hirata et al.
2016) there are challenges associated to such systems. For example, there are cases
of system capacity excessiveness or insufficiency. These are caused by insufficient
data recording and analysis. Such problems often lead to failure of system function.
D. Yoshidome (B) · R. Kikuchi · A. H. Pandyaswargo · H. Onoda
Graduate School of Environment and Energy Engineering, Waseda University, Tokyo, Japan
e-mail: ysdm.3435@akane.waseda.jp
© Springer Nature Singapore Pte Ltd. 2021
Y. Kishita et al. (eds.), EcoDesign and Sustainability II, Sustainable Production, Life
Cycle Engineering and Management, https://doi.org/10.1007/978-981-15-6775-9_37
557