Technical feasibility of a hybrid on-site H2 and renewable energy system for a zero-energy building with a H2 vehicle.

The background of this research is based on the commercialization trends of the H 2 vehicles and the upcoming legislation on the zero-energy building (ZEB). Regarding these two backgrounds, there is special research interest to investigate the technical feasibility of integrating a H 2 vehicle with an on-site renewable electrical (REe) system in the ZEB. Hereby, a hybrid system consisting of an on-site REe and a H 2 vehicle integrated H 2 system is proposed and set up in the TRNSYS simulation with novel control logics defined by the authors. The essential principle is to drive the electrolyzer with the surplus on-site REe, and to drive the fuel cell to cover the on-site electrical shortage, while the cogenerated heat from the H 2 system will be utilized for domestic heating purposes. The simulation results show that with the support of a 14 kW wind turbine, the building will be a nearly ZEB with full annual availability of the H 2 vehicle, whereas with the support of a 178 m 2 PV, the building will be a net ZEB with 48 days’ annual unavailability of the H 2 vehicle. Via a seasonal matching analysis, it can be found that the H 2 vehicle integrated H 2 system has a significant effect on alleviating the monthly surplus on-site REe generation. By relieving the condition of discharging the H 2 storage by the fuel cell, both the on-site surplus REe and energy shortage will be further reduced and the cogenerated heat from the H 2 system can be increased. Therefore, the research approves that it is technically feasible to simultaneously meet the zero-emission fuel requirement of the H 2 vehicle, the convenient accessibility of the H 2 refuelling station, the fulfillment of the zero energy balance of the building, and the highest matching capability between generation and demand. [ABSTRACT FROM AUTHOR]