Unique Registration Number: 313
Name of Applicant/s: Prof Gaurish M Samant
Name of College: Don Bosco College of Engineering
Address: Fatorda Goa
Contact Number: +91 7411357170
Contact Email ID: samantgaurish@gmail.com
Project Objective:
The main objective of the project is to generate water at minimum cost while making the machine self-sufficient. By keeping in mind the 4 following points:
i. Aim to generate 36L per day (i.e. 1.5L per hour).
ii. Aim to also keep the cost of water generated to a minimum.
iii. Reduce particulate matter and purifying the air.
iv. For every household to be independent with clean drinking water.
Abstract:
An atmospheric water generator and system for condensing and collecting moisture contained in the air serves to cool and dehumidify the air. The collected water is then purified and can be stored in a tank. It also acts as an air conditioning unit since cool air is dispersed. The water generator uses the principle of cooling the air and getting it below its dew point temperature so as to extract the water which is in the form of humidity; from it. The cooling is done by vapor compression cycle that includes a heat exchanger, condenser, compressor and expansion valve along with the necessary auxiliary sensors and metering devices. The blower lets air into the system enclosure at a constant ow rate which hits the evaporator (heat exchanger) thus cooling the air to the required dew point temperature. The water vapor from the air thus condenses on the cooling coils, fins and baffles and is then collected in a storage tank.
As the system contains 3 stage filtration system the water obtained is of the highest grade.
The filtration system can also be accessed for purifying undrinkable water or regular tap water thus providing additional usability. The cool air which is let out of the enclosure also cools the surrounding thus acting as an air conditioning unit.
Project Outcome/Result/Findings:
We visited a lot of farms and most of the farmers were complaining about their dependence
on the rains for their produce of crop, and how die to the recent changes in weather and
erratic rainfall they were facing a lot of economic problems and stress. So we thought
of an idea where we could produce water that could be used both for irrigation as well
as be potable and being easily available at a low cost so everyone could benefit from it.
99.7% of the water available to us is unusable, of the 0.3% left a majority of the portion is locked up in the polar caps and ground water which is ever depleting. Thus Water extraction from air is the current best possible future proof solution.
i. The design of our machine is so optimum that the use of regular servicing is eliminated
thus making it self-sufficient for a considerable amount of time.
ii. The current water generation machines are very costly and non-viable for common
household use.
iii. Our machine defeats this fact as it can run on low power and is considerably cheaper.
iv. The water obtained is of the highest grade i.e. Type I water, the purest grade of water, is
also referred as ultra pure water.
v. In hot humid areas it will assist in increasing the ambient comfort level as the air exiting
the system is of lower temperature.
vi. The air cycled through the machine will get purified and cleaned thus making it healthier
to breathe.
Innovative Approach:
The main objective of the project is to generate water at minimum cost while making the
machine self-sufficient. By keeping in mind the 4 following points :
i. Aim to generate 36L per day (i.e. 1.5L per hour).
ii. Aim to also keep the cost of water generated to a minimum.
iii. Reduce particulate matter and purifying the air.
iv. For every household to be independent with clean drinking water.
We will be using copper tubes (Beryllium Copper C17200) as it is the best thermal conductor of heat and will give us the highest thermal efficiency and rate of heat exchange.
For our shell casing we have chosen Aluminium as it has a high thermal conductivity, is corrosive resistant and is cheaper than copper.
For our Condensate tank we have chosen to use HDPE (High density Polyethylene) which is
corrosive resistant and will have a longer life.
For our refrigerant we chose R407C as it is an we want our machine to be environmentally friendly and R407C is proven to be ozone safe. R407C is also economically more viable as it non-toxic, Non-flammable and non-corrosive