Optimal sizing of residential gas engine cogeneration system for power interchange operation from energy-saving viewpoint

Energy ◽  
2011 ◽  
Vol 36 (6) ◽  
pp. 3816-3824 ◽  
Author(s):  
Tetsuya Wakui ◽  
Ryohei Yokoyama
2010 ◽  
Vol 130 (5) ◽  
pp. 646-654 ◽  
Author(s):  
Miao Hong ◽  
Satoshi Horie ◽  
Yushi Miura ◽  
Tosifumi Ise ◽  
Yuki Sato ◽  
...  

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6611
Author(s):  
Kazui Yoshida ◽  
Hom B. Rijal ◽  
Kazuaki Bohgaki ◽  
Ayako Mikami ◽  
Hiroto Abe

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 CO2 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 CO2 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.


1993 ◽  
Vol 59 (559) ◽  
pp. 807-813
Author(s):  
Koichi Ito ◽  
Ryohei Yokoyama ◽  
Takashi Shiba ◽  
Hidekazu Hayashi

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