Sharif Digital Repository

In the initial part of this research, 10 selected dams out of 647 existing dams in Iran were selected using ArcGIS software, based on 3 indicators of height above sea level, temperature, horizontal solar radiation and wind speed, and the shadow model was calculated by calculating the radiation angle. The solar radiation on the reservoir water level of one of the selected dams, which is Durood Zan Dam, was checked on 4 days of the year. In the next stage, the design of the floating part of the power plant and its related components, in 3 parts including the main door, the door The pontoon and the main pontoon were done. Platform dimensions were optimized during the design process and to... 

One of the main drivers for the substantial growth in wind energy utilization in the world is the growing demand for renewable energy sources to reduce greenhouse gas emissions. At greater distances from the coastline, more and steadier potential energy resources are available. This has led the world offshore wind energy industry to grow at a faster rate than onshore in the past two decades. In deep waters, the wind turbine is mounted on a floating platform, whose movements increase the complexity of the turbine control system and enhance the mechanical loads on the various components of the turbine. Reducing these mechanical stresses is equivalent to increasing the lifetime of the turbine... 

The objective of this project is to study the behaviour and performance of an innotative floating offshore platform. Such Platform not only can be used for exploring oil from offshore fields, but for creating artificial islands, where land is in short supply. Due to its specific and, at the same time, simple geometry (symmetric), its fabrication does ont involve much complexity. Studies carried out on this platform include the investigation into its structural behaviour under gravitational (including self weight) and bouyancy forces. Studied cases include a number of platforms with different (geometrical) sizes and under 3 various bouyancy conditions (percentage), namely 1) 50% of the height... 

Several countries in the Middle East – North Africa (MENA) region have been always faced drought in their histories, so they implementing many strategies to manage vital water resources for many years. Because of the volume of water available for food production has not been sufficient to meet increasing demands, it has became a critical issue today, to optimize the consumption of water. One of the best policies is to use financial tools to adjust the water usage.In this research we have studied the effects of two scenarios on the volume of water consumption. The firs scenario is to increase the water price, and we have studied the consumers’ reactions. The second scenario is to lend the... 

In this thesis, we present the results of a laboratory and numerical model study of the exchange flow generated by the temperature gradient between an open water heated by sunlight and a canopy area made of floating vegetation. Particle Image Velocimetry is employed to obtain the structures of the warm flow intruding the canopy at the surface and the bottom cold return flow for different roots length and vegetation density. Following an initial, transient stage of flow build-up governed by a balance between inertia and buoyancy forces, the flow reaches a steady state in the canopy area with a force balance between buoyancy and vegetation drag dominating the flow within roots. At the steady... 

Anzali wetland, in the Caspian Sea, northern Iranian province of Gilan, ranges from fresh near the tributary streams to brackish near the mouth into the harbor and the sea. Anzali wetland has faced with the serious levels of eutrophication because on the other hand, the lagoon has decreased in size during current century, to less than a quarter of its former extent and on the other hand, this wetland is faced with entering a huge amount of nutrient elements due to human activities in its watershed. Discharge of industrial wastewater, animal wastes, timber harvesting and the most important entering, rice farms irrigated wastewater are of the considerable causes of eutrophication in wetland.... 

The ever-growing demand for energy has raised concerns on sustainability of energy supplies and their environmental impact. Energy efficiency in buildings has gained special interest due to its energy consumption share in national scale. One of the most promising approaches for reducing building’s energy consumption is using an intelligent building management system (BMS). These systems have proved to reduce energy consumption while increasing comfort, and hence have gained global, and more recently national, recognition. This research has been devoted to the development of an intelligent building management system for the building of Sharif Energy Research Institute (SERI). The proposed... 

Oil is being discussed as the main source of producing energy in the world. Thus its exploration and exploitation from the sea or land is very important. Most of these resources exist in the depths of the sea. Exploitation of these resources demands to reach knowledge of design and technology of manufacturing platforms and devices for exploitation in the deep waters. There are massive oil reserves in the context of deep waters. Using fixed platforms in depth is very uneconomic; also we know the natural period of these structures is close to the wave period in deep waters. As a result researches and mining industry in the deep waters have gone to use comparative platforms such as: TBT, TLP,...