Energy-Saving and CO 2 -Emissions-Reduction Potential of a Fuel Cell Cogeneration System for Condominiums Based on a Field Survey

Kazui Yoshida, Hom B. Rijal, Kazuaki Bohgaki, Ayako Mikami and Hiroto Abe
Additional contact information
Kazui Yoshida: Graduate School of Environmental and Information Studies, Tokyo City University, Yokohama 224-8551, Japan
Hom B. Rijal: Graduate School of Environmental and Information Studies, Tokyo City University, Yokohama 224-8551, Japan
Kazuaki Bohgaki: Graduate School of Environmental and Information Studies, Tokyo City University, Yokohama 224-8551, Japan
Ayako Mikami: Tokyo Gas Co., Ltd., Tokyo 105-8527, Japan
Hiroto Abe: Teamnet Inc., Tokyo 155-0033, Japan

Energies, 2021, vol. 14, issue 20, 1-15

Abstract: A residential cogeneration system (CGS) is highlighted because of its efficient energy usage on both the supplier and consumer sides. It generates electricity and heat simultaneously; however, there is insufficient information on the efficiency according to the condition of usage. In this study, we analysed the performance data measured by the home energy management system (HEMS) and the lifestyle data of residents in a condominium of 356 flats where fuel cell CGS was installed in each flat. The electricity generated by CGS contributed to an approximately 12% reduction in primary energy consumption and CO 2 emission, and the rate of generation by the CGS in the electric power demand (i.e., contribution rate) was approximately 38%. The electricity generation was mainly affected by the use of electricity up to 4 MWh/household/year. Gas or water use also impacted electric power generation, with water use as the primary factor affecting the contribution rate. Electric power generation changes monthly, mainly based on the water temperature. From these results, we confirmed that a CGS has substantial potential to reduce energy consumption and CO 2 emission in condominiums. Thus, it is recommended for installation of fuel cell CGS in existing and new buildings to contribute to the energy-saving target of the Japanese Government in the residential sector.

Keywords: cogeneration system; fuel cell; energy-saving effect; condominium; HEMS (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/20/6611/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/20/6611/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:20:p:6611-:d:655575

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().