DESIGN FABRICATION AND TESTING OF SEMI-AUTOMATIC FLOOR CLEANING MACHINE

Abstract

The Earth Air Heat Exchanger (EAHE) is a hybrid passive way of cooling. The hybrid way suggests that it involves an active agent fan for the flow of air, but the cooling and heating of air is done with the help of a passive agent ground soil. In this pipes are buried underground and air is flown through it to cool or heat according to the season since the temperature of soil underground remains constant and at near human comfort level. EAHE can be used and in some places it still in use cool homes, buildings and other systems. There is a need to make a shift from high energy consuming active user to low energy consuming techniques. And EAHE is one of those techniques. There has been a lot of research done over it with the development of algorithms to design the heat exchanger, CFD analysis etc. This project aims to contribute for further development of EAHE. We had developed an algorithm in which we assumes a maximum load in a room and with this input factor we design a heat exchanger, in which we find out the required diameter and length of the pipe to cool the load in the room. We assume some required factors like required temperature in the room, maximum outside temperature, velocity of air. This project aims to bring ground source cooling into use and research. We acknowledge the limitations of EAHE systems over AC systems and hope this project would help others