Humidity Water Generator

Project Title

Humidity Water Generator

Project Area of Specialization Electrical/Electronic EngineeringProject Summary

An humidity water generator (HWG) is a device that extracts water from hunid ambient air. water vapor in the air can be extracted by condansation - cooling the air below its dew point, exposing the air to desiccants, or pressurizing the air. Unlike a dehumidifier, an HWG is designed to render the water potable. HWGs are useful where pure drinking water is difficult or impossible to obtain, because there is almost always a small amount of water in the air that can be extracted. The two primary techniques in use are cooling and desiccants.Many humidity water generators operate in a manner very similar to that of a dehumdifier: air is moved over a cooled coil, causing water to condense. The rate of water production depends on the ambient temperature, humidity, the volume of air passing over the coil, and the machine's capacity to cool the coil. These systems decrease air temperature, which in turn reduces the air's capacity to carry water vapor. This is the most common technology in use, but when powered by coal-based electricity it has one of the worst carbon footprints of any water source (exceeding reverse osmosis seawater desalination by three orders of magnitude) and it demands more than four times as much water up the supply chain than it delivers to the user.

Project Objectives

1. Off-grid living is sometimes a result of inconvenient circumstances, but other times it is purely by choice. To escape the costs and politics of living on public utilities, many families choose to use alternative methods of energy and water collection.

2.Industries which require travel, such as the military, can use an Humidity water generator to create water when resources run low. Setting up camp in a desert, or a region where there is little safe drinking water is much simpler when you have a device like ours to continuously supply hydration

3.On of the biggest advantages of Humidity Water Generators are the cost efficiency of the device. While the immediate cost may outweigh the price of purchasing portable water from a retailer at first, the overall value improves, and a net gain is seen within a short time period.

4.Finally, a major reason to implement an humidity water generator is for emergency and medical purposes. Having one of these units handy during recovery efforts can help source drinkable water for families, store supplies, medicine and blood, alongside other necessities.

Project Implementation Method

Summary form only given, as follows. The complete presentation was not made available for publication as part of the conference proceedings. A frequently  report by the World Bank and McKinsey suggests the world is facing a 40% gap between the water supply and water demand. This gap is the result of a growing population, climate change, increasing demand, and the readily available volume of freshwater on the planet. Analysis by the U.S. Geological Survey demonstrates that there is more water in the air than in all the rivers in the world: 3,000 cubic miles of water, or six times that flowing in our rivers today. Therefore, humidity water generation is an alternative solution to face a globe water crisis. Humidity Water Generator (HWG) consists of three basic processes as shown in figure below: air-filtering process to clean the inlet air from dust and dirt, dehumidification process to condense the water vapor from air, and water purification process to obtain safe and clean potable water free from bacteria. Finally, World Health Organization (WHO) standards are satisfied by adding required minerals.

Benefits of the Project

1.Off-grid life is sometimes caused by inconvenient circumstances, but other times it is entirely a choice. In order to avoid the cost of using public utilities and political life, many families choose to use alternative energy and water collection methods.

2 In the absence of resources, industries that need to travel, such as the military, can use humidity water generators to generate water. If you have equipment like ours to continuously replenish water, it's much easier to set up camps in deserts or areas with little safe drinking water.

3 The greatest advantage of the humidity water generator is the cost-effectiveness of the device. Initially, the current direct cost may exceed the price of buying portable water from retailers, but the overall value has increased and net gains can be seen in a very short period of time.

4.Finally, the main reason for achieving humidity water generators is for emergency and medical purposes. One of these units is readily available in the recovery effort to provide households with drinking water, storage supplies, medicines and blood, and other necessities.

Technical Details of Final Deliverable

In a cooling condensation type Humidity water generator, a compressor circulates refrigerant through a condenser and then an evaporator coil which cools the air surrounding it. This lowers the air temperature to its dew point, causing water to condense. A controlled-speed fan pushes filtered air over the coil. The resulting water is then passed into a holding tank with a purification and filtration system to help keep the water pure and reduce the risk posed by viruses and bacteria which may be collected from the ambient air on the evaporator coil by the condensing water.

The rate at which water can be produced depends on relative humidity and ambient air temperature and the size of the compressor. Humidity water generators become more effective as relative humidity and air temperature increase. As a rule of thumb, cooling condensation humidity water generators do not work efficiently when the temperature falls below 18.3°C (65°F) or the relative humidity drops below 30%. This means they are relatively inefficient when located inside air-conditioned offices. The cost-effectiveness of an AWG depends on the capacity of the machine, local humidity and temperature conditions, and the cost to power the unit.

The drinking water generation capacity can be enhanced in low humidity ambient air conditions, first by using the evaporative cooler with a brackish water supply to increase the air humidity near to dew point condition. Thus drinking water is generated using brackish water without depending on ambient air humidity by the water generator.

Final Deliverable of the Project Hardware SystemCore Industry AgricultureOther Industries Food Core Technology OthersOther Technologies Clean TechSustainable Development Goals Clean Water and SanitationRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	44199
condenser	Equipment	1	17000	17000
evaporator coils	Equipment	1	12500	12500
compressor	Equipment	1	8200	8200
water filter	Equipment	1	1899	1899
compressor pump	Miscellaneous	1	1000	1000
fans	Miscellaneous	3	1200	3600