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Integrated Design of Ventilation, Heating, Cooling and Humidity Systems in Greenhouses to Reduce Energy and Water Consumption in Energy-Efficient Greenhouses
, M.Sc. Thesis Sharif University of Technology ; Roshandel, Ramin (Supervisor) ; Avami, Akram (Supervisor)
Abstract
Nowadays, one of the most important challenges in developing and operating greenhouses in the agricultural sector is to supply them with energy. Hence, in recent years, the development of greenhouses with the goal of increasing energy efficiency and reducing production costs has been considered by the hands-on-cluster of this field. As a result, one of the main goals for the development of high-productive greenhouses is to reduce the energy consumption index for the production of a unit of product. Another challenge in the greenhouse is the high consumption of water for evaporative cooling systems. On the other hand, the supply systems for heating, cooling and ventilation should be able to...
Modeling and Experimental Investigation of a solar Hybrid System to Produce Freshwater from Waste Heat of Photovoltaic Module by Using Thermosyphon heat pipes with different Configurations
, M.Sc. Thesis Sharif University of Technology ; Behshad Shafii, Mohammad (Supervisor) ; Roshandel, Ramin (Supervisor)
Abstract
With regard to an increasing world population and the constant capacity of water resources, new and valid methods should be implemented to preserve freshwater resources and accordingly produce drinking water. In the present study, a solar hybrid system was studied by experimental and theoretical means to facilitate the transformation of waste heat from photovoltaic module (PV module) into useful heat that can be used in a solar desalination (SD) system for freshwater production purposes. The study aimed to fabricate a SD system by using both PV module and thermosyphon heat pipes (THPs) technologies in a single system. In the modeling section, the goal is to present a comprehensive model...
An experimental study of a solar hybrid system to produce freshwater from waste heat of photovoltaic module by using thermosyphon heat pipes
, Article Energy Conversion and Management ; Volume 158 , 2018 , Pages 9-22 ; 01968904 (ISSN) ; Shafii, M. B ; Roshandel, R ; Sharif University of Technology
Elsevier Ltd
2018
Abstract
An experimental study was conducted on a solar hybrid system to transform the waste heat of photovoltaic module (PV module) into a useful heat which could be used in a solar desalination (SD) system in order to produce freshwater (scenario 1). Then, different parameters such as the amount of the produced freshwater by condensed vapor on the glass cover and basin side walls were taken into consideration after the fabrication of the SD system. Furthermore, the effect of water depth in the tray and the effect of the presence of a fan inside the basin (scenario 3) on water yield (kg/m2hr) were evaluated. In addition, the effects of using a mirror to lead the reflected light on the PV module and...