Identifying the characteristics of an ideal system in nature and comparing it with existing real system in a given area for possible improvement is one of the research methods in research methodology. While comparing the ideal system characteristics with existing/real system characteristics the research gap can be determined and further research can be carried out to improve the real-world system. The four basic problems still existing in the society worldwide are related to nutritious food, drinking water, renewable energy, and comfortable health. In this paper, we have studied the characteristics of the ideal water purifier, a hypothetical system used to convert contaminated water into pure water to solve drinking and irrigation water pro...