Document Details

Document Type : Thesis 
Document Title :
Use of Liquid Desiccant for Humidity Control and Water Saving in Agriculture
استعمال المحلول المجفف للتحكم بالرطوبة وحفظ المياه في الزراعة
 
Subject : Faculty of Engineering 
Document Language : Arabic 
Abstract : While seawater desalination can play an important role in addressing the domestic water demand in many areas worldwide, desalination alone will not be enough to cover the expanding demands for irrigation and food production, especially in hot and arid climates. By comparing to open field farms, the greenhouse production of high-value crops requires less freshwater per unit of food produced. In Saudi Arabia, most farms depend on greenhouses. These greenhouses are using the traditional cooling system, which is “the evaporative cooling system that is based on freshwater". One important disadvantage of this method is that it consumes a large amount of fresh water, accounting for up to 80 percent of total freshwater consumption in greenhouses. The coastal areas in Saudi Arabia have high ambient humidity which does not support building greenhouses that use the evaporative cooling system. This research project aims to improve the traditional evaporative cooling system in the greenhouses by adding and constructing a desiccant system as part of the cooling system. The desiccant system is used to control the humidity in ambient air and reduce freshwater consumption in the cooling system. This system makes building greenhouses possible in coastal humid area and not only in the desert arid area. The system consists of a greenhouse, desiccant fluid, desiccant fluid pads, chiller, and fan. With the use of this system water usage during the night cooling cycle can be reduced to zero and in some cases result in water captured from the air which can be used to reduce overall water consumption in the greenhouse at the same time the traditional evaporative cooling systems which used in the greenhouses require a significant quantity of fresh water, accounting for up to 80 percent of overall freshwater use in greenhouses. 
Supervisor : Dr. Hani Abo Alkhair 
Thesis Type : Master Thesis 
Publishing Year : 1444 AH
2022 AD 
Added Date : Tuesday, February 28, 2023 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
أحمد خميس المشهراويAlmashharawi, Ahmed KhamisResearcherMaster 

Files

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 49079.pdf pdf 

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