TY - JOUR
T1 - Modeling of a hybrid power system integrating solar radiation and syngas combustion energy
AU - Cheng, Chin Hsiang
AU - Huang, Shang Ting
N1 - Funding Information:
Financial support from the National Science and Technology Council, Taiwan, under Grant 108‐3116‐F‐006‐014‐CC2, is greatly appreciated.
Publisher Copyright:
© 2023 The Authors. Energy Science & Engineering published by Society of Chemical Industry and John Wiley & Sons Ltd.
PY - 2023/10
Y1 - 2023/10
N2 - This study aims to model a hybrid power system that can continuously generate power by switching between two possible thermal sources: solar radiation and combustion energy from synthesis gases. The system comprised a hybrid energy receiver, solar dish, Stirling generator, fluidized-bed gasifier, boiler, and water tank. The solar dish was a dual-reflection solar collector that used two mirrors, namely the main and subordinate concentrators, to concentrate a broad expanse of solar radiation onto a hybrid energy receiver. The fluidized-bed gasifier was employed for the production of synthesis gases. The synthesis gases were combusted to provide an auxiliary heat source for the Stirling generator when solar radiation was insufficient. Solar radiation or combustion energy was alternatively introduced into the hybrid energy receiver and converted to power by a 1-kW-scale beta-type Stirling engine. In this manner, the Stirling generator could serve as a base-load power plant regardless of solar conditions. In this study, a complete quantitative model was developed for a demonstration plant by incorporating thermodynamic and dynamic models of the beta-type Stirling engine, a ray-tracing model for the dual-reflection solar dish, an energy model of the hybrid energy receiver, and experimental data for the fluidized-bed gasifier. The performance response of the system during switching between solar radiation and combustion energy was predicted. The modeling results indicated that switching can result in a continuous power output ranging from 600 to 1200 W. With synthesis gas combustion as the auxiliary heat source, the hybrid Stirling power system can be operated continuously, and the overall power output is increased by 109.82% compared to a conventional concentrated solar power system that only uses solar radiation.
AB - This study aims to model a hybrid power system that can continuously generate power by switching between two possible thermal sources: solar radiation and combustion energy from synthesis gases. The system comprised a hybrid energy receiver, solar dish, Stirling generator, fluidized-bed gasifier, boiler, and water tank. The solar dish was a dual-reflection solar collector that used two mirrors, namely the main and subordinate concentrators, to concentrate a broad expanse of solar radiation onto a hybrid energy receiver. The fluidized-bed gasifier was employed for the production of synthesis gases. The synthesis gases were combusted to provide an auxiliary heat source for the Stirling generator when solar radiation was insufficient. Solar radiation or combustion energy was alternatively introduced into the hybrid energy receiver and converted to power by a 1-kW-scale beta-type Stirling engine. In this manner, the Stirling generator could serve as a base-load power plant regardless of solar conditions. In this study, a complete quantitative model was developed for a demonstration plant by incorporating thermodynamic and dynamic models of the beta-type Stirling engine, a ray-tracing model for the dual-reflection solar dish, an energy model of the hybrid energy receiver, and experimental data for the fluidized-bed gasifier. The performance response of the system during switching between solar radiation and combustion energy was predicted. The modeling results indicated that switching can result in a continuous power output ranging from 600 to 1200 W. With synthesis gas combustion as the auxiliary heat source, the hybrid Stirling power system can be operated continuously, and the overall power output is increased by 109.82% compared to a conventional concentrated solar power system that only uses solar radiation.
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U2 - 10.1002/ese3.1525
DO - 10.1002/ese3.1525
M3 - Article
AN - SCOPUS:85165933979
SN - 2050-0505
VL - 11
SP - 3379
EP - 3396
JO - Energy Science and Engineering
JF - Energy Science and Engineering
IS - 10
ER -