The energy flow map (EF map), which is based on a matrix of subsystems and energy types, can be used to visualize the transfer and conversion of various types of energy in the target system from a bird's eye view. The EF map can be used to clarify the goals of the overall system, technical challenges to those goals, and the interconnectedness of the various types of energy in the system. By using this map as a basis for generating new ideas, it is possible to create high value-added products and services. The use of iQUAVIS, a tool for visualization of conceptual models, makes it possible to create and utilize EF maps effectively.
OKA et al. (Wed,) studied this question.