1. Introduction Hydrogen can play a leading role in attaining environmental goals. However,
this is conditioned by the primary energy and the conversion technology used to produce …

1. Introduction Biomass, which includes agricultural and livestock waste, can be used to
produce fuel and has been focused on as a clean distributed energy source. Biomass …

Renewable energy, particularly solar and wind power, is increasing in Japan, but the cost is
high, and their adoption has not progressed as much as in other countries. Therefore, a …

Biohydrogen is a clean and renewable source of energy, which has the potential to replace
the conventional fossil fuels. However, purification and storage of biohydrogen are some …

1. Introduction Hydrogen has been argued as being the most versatile, efficient and
environmentally friendly fuel, while also acts as the cheapest and safest form of …

Two-dimensional model and simulation programs for designing a hydrogen storage vessel
using hydrogen absorbing alloy with tubular heat exchanger were developed with the “Flow …

This paper proposes a hydrogen-based social economy derived from fuel cells capable of
replacing fossil fuels and resolving global warming, It thus provides an entry for developing …

1. Introduction Hydrogen (H2) is considered to be a clean energy resource 1). However,
fossil fuels are currently the major source of hydrogen 2), giving rise to environmental …

In recent years, technological development of fuel cells has progressed, and hydrogen
demand for the fuel is expanding. However, since fossil fuel is mainly used as the energy …

To ensure the energy efficiency of renewable hydrogen energy systems, power conservation
and thermal management are necessary. This study applies these principals to the …