ABSTRACT
Constraints are population, lifestyle, North–South problem, global warming, environment changes, resources, and energy. Global problems include energy resources, petroleum resources, material resources, and environmental change. Biodiversity is a concept that shows diversity related to living things. It refers to the existence of various organisms in the ecosystem/biological group system or the whole earth. It consists of ecosystem diversity, species diversity, and genetic diversity. Hydrogen is inexpensively mass-produced from petroleum and natural gas. If it is inexpensive and a large amount of electric power can be obtained, electrolysis of water can be carried out and hydrogen can be produced from various fuels such as bioethanol because it can be taken out from hydrocarbons. Heat pump is a system of transferring heat from a low-temperature region to a high-temperature region by using a heat medium, a semiconductor. In the petroleum and gas industry, sulfur content contained in raw materials and products, having harmful effects, is removed.
