TY - JOUR
T1 - Effect of bagasse drying on thermal energy storage utilizing zeolite water vapor ad/desorption at a sugar mill
AU - Fujii, Shoma
AU - Kanematsu, Yuichiro
AU - Kikuchi, Yasunori
AU - Nakagaki, Takao
N1 - Funding Information:
This work was supported by Shinko Sugar Mill Co., Ltd. , JSPS Grant-in-Aid for Research Activity Start-up (Grant Number 20K23360 ), JST COI-NEXT (Grant Number JPMJPF2003 ), and the Environment Research and Technology Development Fund (Grant Number JPMEERF20213R01 and JPMEERF20192010 ) of the Environmental Restoration and Conservation Agency of Japan. The activities of the Presidential Endowed Chair for “Platinum Society” at the University of Tokyo are supported by the KAITEKI Institute Incorporated, Mitsui Fudosan Corporation, Shin-Etsu Chemical Co., ORIX Corporation, Sekisui House, Ltd., East Japan Railway Company, and Toyota Tsusho Corporation.
Funding Information:
This work was supported by Shinko Sugar Mill Co. Ltd., JSPS Grant-in-Aid for Research Activity Start-up (Grant Number 20K23360), JST COI-NEXT (Grant Number JPMJPF2003), and the Environment Research and Technology Development Fund (Grant Number JPMEERF20213R01 and JPMEERF20192010) of the Environmental Restoration and Conservation Agency of Japan. The activities of the Presidential Endowed Chair for “Platinum Society” at the University of Tokyo are supported by the KAITEKI Institute Incorporated, Mitsui Fudosan Corporation, Shin-Etsu Chemical Co. ORIX Corporation, Sekisui House, Ltd. East Japan Railway Company, and Toyota Tsusho Corporation.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/7
Y1 - 2022/7
N2 - Recently, polygeneration in the sugarcane industry, which produces not only raw sugar but also other products (ethanol and electricity), has been attracting attention for green economy via the utilization of local natural resources. We focus on “heat” as a polygeneration method for the sugarcane industry. This study describes a thermal energy storage and transport system that can eliminate the spatio-temporal mismatch between the heat source, the sugar mill, and the fossil fuel consumption. The polygeneration system connects the thermal energy storage system with the sugar mill plant, such that the additional power generated by drying sugarcane bagasse, a fuel with a high moisture content, is used as the auxiliary power for thermal energy storage. Here, assuming the bagasse drying process at a sugar mill, we studied the bagasse drying rate, the bagasse drying in the bagasse elevator, simulations of a sugar mill with bagasse drying, and the thermal energy storage system utilizing the water vapor ad/desorption cycle of zeolite; a sugar mill in Tanegashima, Japan, was used as an example. A fixed-bed test packed with sugarcane bagasse was conducted, and a numerical model was developed for simulating the temperature distribution and the evolution of the outlet vapor pressure in the fixed-bed reactor. Subsequently, the bagasse drying process using a covered bagasse elevator was numerically simulated, and a moisture reduction of 2% was expected. This result was incorporated into the process simulation, to evaluate the relationship between additional power generation and temperature as well as the flow rate of unused heat for thermal energy storage. Finally, this relationship was incorporated into the numerical design of a heat-charging device, to evaluate the effect of bagasse drying on the thermal energy storage system. The coefficient of performance (COP) of the heat-charging system with bagasse drying was 1.6 times higher than that without bagasse drying.
AB - Recently, polygeneration in the sugarcane industry, which produces not only raw sugar but also other products (ethanol and electricity), has been attracting attention for green economy via the utilization of local natural resources. We focus on “heat” as a polygeneration method for the sugarcane industry. This study describes a thermal energy storage and transport system that can eliminate the spatio-temporal mismatch between the heat source, the sugar mill, and the fossil fuel consumption. The polygeneration system connects the thermal energy storage system with the sugar mill plant, such that the additional power generated by drying sugarcane bagasse, a fuel with a high moisture content, is used as the auxiliary power for thermal energy storage. Here, assuming the bagasse drying process at a sugar mill, we studied the bagasse drying rate, the bagasse drying in the bagasse elevator, simulations of a sugar mill with bagasse drying, and the thermal energy storage system utilizing the water vapor ad/desorption cycle of zeolite; a sugar mill in Tanegashima, Japan, was used as an example. A fixed-bed test packed with sugarcane bagasse was conducted, and a numerical model was developed for simulating the temperature distribution and the evolution of the outlet vapor pressure in the fixed-bed reactor. Subsequently, the bagasse drying process using a covered bagasse elevator was numerically simulated, and a moisture reduction of 2% was expected. This result was incorporated into the process simulation, to evaluate the relationship between additional power generation and temperature as well as the flow rate of unused heat for thermal energy storage. Finally, this relationship was incorporated into the numerical design of a heat-charging device, to evaluate the effect of bagasse drying on the thermal energy storage system. The coefficient of performance (COP) of the heat-charging system with bagasse drying was 1.6 times higher than that without bagasse drying.
KW - Biomass
KW - Drying
KW - Polygeneration
KW - Process simulation
KW - Sugarcane
UR - http://www.scopus.com/inward/record.url?scp=85127103640&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85127103640&partnerID=8YFLogxK
U2 - 10.1016/j.est.2022.104495
DO - 10.1016/j.est.2022.104495
M3 - Article
AN - SCOPUS:85127103640
SN - 2352-152X
VL - 51
JO - Journal of Energy Storage
JF - Journal of Energy Storage
M1 - 104495
ER -
