Study on vacuum desalination of seawater and feasibility of solar as the energy source

Rossy, Miraz Hafiz

Study on vacuum desalination of seawater and feasibility of solar as the energy source

Rossy, Miraz Hafiz

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Publication Type:: Thesis
Issue Date:: 2018

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Field	Value	Language
dc.contributor.author	Rossy, Miraz Hafiz
dc.date.accessioned	2018-08-23T03:04:58Z
dc.date.available	2018-08-23T03:04:58Z
dc.date.issued	2018
dc.identifier.uri	http://hdl.handle.net/10453/127292
dc.description	University of Technology Sydney. Faculty of Engineering and Information Technology.	en_AU
dc.description.abstract	This study covers the development of an energy efficient water desalination system that allows a reduction in the use of fossil fuel and meets the scarcity of drinking water. As part of planning to address shortfalls in fresh water supply for the world, several parallel investigations have been underway. Seawater can be a huge source of fresh water. Seawater is desalinated to provide drinking water at many locations throughout the world. Recent advancements in technology have reduced the costs and energy use of desalination. These technical advances and increasing shortages of freshwater have led to increasing numbers of large plants being constructed around the world. This trend is most evident in Australia, with the plant recently commissioned in Perth, a plant under construction on the Gold Coast and proposed new plants in Perth and in Sydney. Desalination is the process of removing salt and other minerals from salt water to produce usable water. A huge amount of energy is needed to do the desalination of seawater. So, a cost-effective and efficient way needs to be introduced to get the fresh water. A solar water heater can warm up the seawater (to a temperature above room temperature) easily during normal day-light condition. Then this warm water can be boiled at low temperature (well below the normal boiling point, 100°C) when surrounding pressure is reduced. The vapour from the boiling will then be condensed back into the liquid water at room temperature. Experiments were conducted to reduce the surrounding pressure using a vacuum pump to allow water to evaporate at a temperature lower than the normal boiling temperature of 100°C. It also includes the review of literature and construction of the test rig and testing considering various parameters. The preliminary focus is on the evaporation of water at low temperature and pressure. The warm water of the similar temperature that we can achieve from a solar water heater was used to test the system. The ultimate goal of this research would be to establish a simple method to produce fresh water from seawater using a solar water heater, a vacuum pump that runs by solar electricity along with a condenser and pressure vessels.	en_AU
dc.format	Thesis (ME)
dc.language.iso	en_AU	en_AU
dc.relation	https://opus.lib.uts.edu.au/bitstream/10453/127292/7/02whole.pdf
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	The author owns the copyright in this thesis including all reproduction and reuse rights for the work. The work may not be altered without the permission of the copyright owner. Attribution is essential when quoting or paraphrasing from this thesis.
dc.rights	au.edu.uts.lib/ppc
dc.title	Study on vacuum desalination of seawater and feasibility of solar as the energy source	en_AU
dc.type	Thesis	en_AU
utslib.copyright.status	open_access

Abstract:

This study covers the development of an energy efficient water desalination system that allows a reduction in the use of fossil fuel and meets the scarcity of drinking water. As part of planning to address shortfalls in fresh water supply for the world, several parallel investigations have been underway. Seawater can be a huge source of fresh water. Seawater is desalinated to provide drinking water at many locations throughout the world. Recent advancements in technology have reduced the costs and energy use of desalination. These technical advances and increasing shortages of freshwater have led to increasing numbers of large plants being constructed around the world. This trend is most evident in Australia, with the plant recently commissioned in Perth, a plant under construction on the Gold Coast and proposed new plants in Perth and in Sydney. Desalination is the process of removing salt and other minerals from salt water to produce usable water. A huge amount of energy is needed to do the desalination of seawater. So, a cost-effective and efficient way needs to be introduced to get the fresh water. A solar water heater can warm up the seawater (to a temperature above room temperature) easily during normal day-light condition. Then this warm water can be boiled at low temperature (well below the normal boiling point, 100°C) when surrounding pressure is reduced. The vapour from the boiling will then be condensed back into the liquid water at room temperature. Experiments were conducted to reduce the surrounding pressure using a vacuum pump to allow water to evaporate at a temperature lower than the normal boiling temperature of 100°C. It also includes the review of literature and construction of the test rig and testing considering various parameters. The preliminary focus is on the evaporation of water at low temperature and pressure. The warm water of the similar temperature that we can achieve from a solar water heater was used to test the system. The ultimate goal of this research would be to establish a simple method to produce fresh water from seawater using a solar water heater, a vacuum pump that runs by solar electricity along with a condenser and pressure vessels.

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http://hdl.handle.net/10453/127292