Comparative analysis of hybrid systems for on-grid and off-grid applications in central China: Case study of university dormitory in Ma'anshan

4th Asia Conference of International Building Performance Simulation Association

土木建筑工程

Wei, M.M.^1 ; Wang, J.Z.^1 ; Huang, Z.J.^1

School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan

243002, China^1

关键词: Central chinas;    Comparative analysis;    Hybrid energy system;    Levelized costs;    Net present cost;    Off-grid system;    Time-of-use rates;    University dormitories;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/238/1/012028/pdf
DOI  :  10.1088/1755-1315/238/1/012028

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

In order to compare the design of hybrid energy systems for on-grid and off-grid applications, a university dormitory in central China is selected and investigated to achieve the target of a zero energy dormitory. The building is modeled in DeST and hybrid system design optimization is performed in HOMER. Results show that the on-grid hybrid system under time-of-use rate policy is much more economic than that under single rate policy for on-grid case. The total net present cost is 230,534 $ and the levelized cost of energy is 0.124 $/kWh. The off-grid system with generators is more economical than system without them, and the cost is found to be about 6 times than on-grid system. Sensitivity analysis is performed by considering sell-back price and diesel price, it is found that NPC and COE can be increased by 9.7% and 12.7% for the decreased sell-back price and doubled diesel price respectively.