4.7 Article

Techno-economic analysis of a hybrid energy system for CCHP and hydrogen production based on solar energy

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 47, Issue 58, Pages 24533-24547

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.08.134

Keywords

Hydrogen production; Solar energy; CCHP; Total cost; Carbon dioxide emission; Fossil energy consumption

Funding

  1. National Natural Science Foundation of China [5197602, 71603039]
  2. Economic Research Institute for ASEAN and East Asia [ERIA-RD/RE-1-1-2004/06/FY20]
  3. Fundamental Research Funds for the Central Universities, China [DUT21RC(3)004]

Ask authors/readers for more resources

This study proposes a hybrid energy system that utilizes surplus electricity to produce hydrogen, providing energy for public buildings in Northeast China. The system configuration with the lowest unit energy cost was obtained through optimization. It effectively addresses the problem of photovoltaic power curtailment.
A typical problem in Northeast China is that a large amount of surplus electricity has arisen owing to the serious photovoltaic power curtailment phenomenon. To effectively utilize the excess photovoltaic power, a hybrid energy system is proposed that uses surplus electricity to produce hydrogen in this paper. It combines solar energy, hydrogen production system, and Combined Cooling Heating and Power (CCHP) system to realize cooling, heating, power, and hydrogen generation. The system supplies energy for three public buildings in Dalian City, Liaoning Province, China, and the system configuration with the lowest unit energy cost (0.0615$/kWh) was obtained via optimization. Two comparison strategies were used to evaluate the hybrid energy system in terms of unit energy cost, annual total cost, fossil energy consumption, and carbon dioxide emissions. Subsequently, the annual total energy supply, typical daily loads, and cost of the optimized system were analyzed. In conclusion, the system is feasible for small area public buildings, and provides a solution to solve the phenomenon of photovoltaic power curtailment. (C) 2021 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.

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