Seawater Greenhouse technology for sustainable intensification of agriculture in world’s arid regions

Research output: Contribution to conferencePaper

Abstract

The Seawater Greenhouse is an innovative technology to address problems at the food-water-energy nexus. It is a growing system powered by renewable energy and cooled by seawater, allowing sustainable intensification of agriculture to meet the soaring demands for food in the world’s arid regions. This presentation explains how the technology can be adapted to meet different climatic conditions and economic constraints. To illustrate the different modes of operation, case studies are presented for designs already implemented in Spain, the United Arab Emirates, Australia and Oman. Further designs are in progress for Iran and Somaliland. Seawater evaporation, the key feature of the Seawater Greenhouse, is highlighted from the points of views of both space cooling and brine disposal. Space cooling enables extended growing seasons, diversification of crops and reduced evapotranspiration rates in hot climates – without expenditure of freshwater. Brine disposal comes into play when, instead of using raw seawater for cooling, the seawater is taken from the reject stream of desalination plants. This introduces the possibility for improved brine management, which can also be applied for inland desalination scenarios where brine disposal is especially problematic. The seawater greenhouse can be used for volume reduction of brine, to prevent deterioration of soil associated with unmanaged discharge of brine to the environment. The presentation also shows how the design of the Seawater Greenhouse has been optimised through fluid dynamic modelling to achieve targets for cooling and brine disposal in certain case studies, in particular that of Somaliland where a pilot is currently being developed to meet exacting requirements with regard to low cost and robust construction.
Original languageEnglish
Publication statusPublished - 20 Aug 2017
EventInternational Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory - Beijing, China
Duration: 20 Aug 201724 Aug 2017

Symposium

SymposiumInternational Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory
Abbreviated titleGreensys 2017
CountryChina
CityBeijing
Period20/08/1724/08/17

Fingerprint

arid region
brine
seawater
agriculture
cooling
food
world
fluid dynamics
desalination
energy
expenditure
evapotranspiration
growing season
evaporation
crop
climate
economics
cost
modeling

Bibliographical note

-

Cite this

Generalis, S. C. (2017). Seawater Greenhouse technology for sustainable intensification of agriculture in world’s arid regions. Paper presented at International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory, Beijing, China.
Generalis, Sotirios C. / Seawater Greenhouse technology for sustainable intensification of agriculture in world’s arid regions. Paper presented at International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory, Beijing, China.
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abstract = "The Seawater Greenhouse is an innovative technology to address problems at the food-water-energy nexus. It is a growing system powered by renewable energy and cooled by seawater, allowing sustainable intensification of agriculture to meet the soaring demands for food in the world’s arid regions. This presentation explains how the technology can be adapted to meet different climatic conditions and economic constraints. To illustrate the different modes of operation, case studies are presented for designs already implemented in Spain, the United Arab Emirates, Australia and Oman. Further designs are in progress for Iran and Somaliland. Seawater evaporation, the key feature of the Seawater Greenhouse, is highlighted from the points of views of both space cooling and brine disposal. Space cooling enables extended growing seasons, diversification of crops and reduced evapotranspiration rates in hot climates – without expenditure of freshwater. Brine disposal comes into play when, instead of using raw seawater for cooling, the seawater is taken from the reject stream of desalination plants. This introduces the possibility for improved brine management, which can also be applied for inland desalination scenarios where brine disposal is especially problematic. The seawater greenhouse can be used for volume reduction of brine, to prevent deterioration of soil associated with unmanaged discharge of brine to the environment. The presentation also shows how the design of the Seawater Greenhouse has been optimised through fluid dynamic modelling to achieve targets for cooling and brine disposal in certain case studies, in particular that of Somaliland where a pilot is currently being developed to meet exacting requirements with regard to low cost and robust construction.",
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Generalis, SC 2017, 'Seawater Greenhouse technology for sustainable intensification of agriculture in world’s arid regions' Paper presented at International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory, Beijing, China, 20/08/17 - 24/08/17, .

Seawater Greenhouse technology for sustainable intensification of agriculture in world’s arid regions. / Generalis, Sotirios C.

2017. Paper presented at International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory, Beijing, China.

Research output: Contribution to conferencePaper

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Generalis SC. Seawater Greenhouse technology for sustainable intensification of agriculture in world’s arid regions. 2017. Paper presented at International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory, Beijing, China.