The need for low-humidity in mechanical applications and human comfort with the concept of Zero Humidity Added Air Cooler (ZHAC): A review

Kavya Dharmendra Kumar Joshi, Prof. Hitesh J. Soni, Prof. Bhavesh V. Patel

Air Dehumidification, Evaporative Air Cooler, Humidity Control, Low Humidity Environment, Zero Humidity Added Air Cooler

This paperwork emphasizes the need for a lower humidity environment in both mechanical applications and human life, along with various ways to achieve it. Additionally, a concept of a zero humidity added air cooler that helps maintain a lower humidity level is proposed in this work. Humidity is one of the extrinsic properties that is generally ignored in the design, analysis, and operation of most mechanical systems [7]. However, if not controlled appropriately, it can have adverse effects. A brief description of conventional methods used to address this issue such as refrigeration-based dehumidification, desiccant dehumidification, ventilation with dry air, and membrane dehumidification for mechanical systems, as well as air conditioning with built-in dehumidification, exhaust fans, and evaporative air coolers for human comfort is also provided. Various types of evaporative air coolers are mentioned, which are applied for different purposes based on the need. Scientific data on how humidity affects human psychological behaviour and health is presented using genuine research articles. Similarly, the impact of humidity on mechanical systems whether beneficial or harmful is also discussed.

Furthermore, the zero humidity added air cooler is described as a modified version of the normal evaporative air cooler that works in a different way with the aim of not increasing the humidity in the supplied air. A brief overview of the concept, method, working principle, and predicted results of the zero humidity added air cooler is included. Finally, a full comparison between traditional methods for achieving lower humidity and the zero-humidity added air cooler concept is discussed with how this modified system gives positive impact.

https://dx.doi.org/10.31873/IJEAS.12.05.07