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@ Or & Mayan, 2017

Power station planning

December 1, 2015

Z. Mosessco Architect and Townplanner participated in the making of two power stations that were built due to the reform. While these two power stations share basic principles of planning and function, the unique characteristics of each station required a different planning approach. 

 

The first power station designed by the firm is Dalia Power Energies, an 870MW combined cycle natural gas fired plant located 40 km southeast of Tel Aviv.  The second is Ashalim, a 121MW solar plant in the Negev Desert, south of the district city of Beer Sheva.

 

Dalia Power Energies Power Station

Dalia Power Energies Power Station is built on the basis of National Infrastructure Plan No. 29a. It is the largest private power station in Israel. It produces 870MW, operates on natural gas and in accordance with regulation includes diesel fuel backup. The production units operate in natural gas fired technology that are fed to advanced gas turbines, where exhaust gas is used to produce 50% more electricity without additional burning of fuel. By that, efficiency rate reaches close to 60%.

The entrepreneurs behind Tzafit are the Israeli company Dalia Power Energies and the international corporation Alstom Power. Dalia Power Energies is the license holder of the approximately 1 billion dollar scope project.

The station is located in Tzafit North site, in the southern coast of Israel, in close proximity to Israel Electrics' power and switching station. On top of the heart of the project – two gas turbine operated production units – Dalia Station includes offices and welfare space, various technological sites, workshops, and control and supervision buildings.

The site was selected after an in-depth examination by the Ministry of National Infrastructures, Energy and Water Resources, of four alternative sites: Hagit, Mavo Carmel, Tzafit and Gat.

The examination took into account many environmental criteria, including closeness to nature values, possible damage to archeological sites, surrounding scenery and views, noise and air pollution and seismic risks. Additional design criteria included the use of land, compliance with statutory plans, accessibility and connection to infrastructures.

Since July 2015 the power station has been supplying 7% of the total demand for electricity in Israel. 

 

Ashalim Thermal-Solar Power Station

The site of Ashalim power station was chosen by the national council in 2004, following the recommendation of the professional team that examines future sites of solar power stations in the south of Israel. Ashalim is the site for three stations: two 121MW each thermal-solar stations and one 30MW photovoltaic station.

Megalim Solar Power Ltd (Megalim) - a special purpose company formed by BrightSource Energy (BSE), Alstom and Noy Found obtained the rights to develop the site through a BOT tender issued by the State of Israel. Brightsource Energy is a company that plans, develops, and operates large scale thermal-solar power stations. Alstom is a multinational corporation that operates, in the energy and rail transport field. Noy Fund is Israel's leading infrastructure and energy investment fund.

Ashalim plot B power station will be based on BSE's Solar Power Tower technology: a heliostat field – thousands of tracking mirrors that concentrate sunlight onto a boiler filled with water that sits atop a tower. When the sunlight hits the boiler, the water inside is heated to a temperate of above 550 C in a pressure of more than 150 atmospheres thus turning the water into high temperature steam. Once produced, the steam is used to produce electricity.

Ashalim will have three main areas:

1.      The heliostat: 2,600 square kilometer solar field consists of 50,000 computerized mirrors comprises the main area of the station.

2.      The solar power tower: 250 meter tall concrete structure, with an outer shell made of varied-density stainless steel and supported by a structure of thin steel cables and rods.  The appearance of the outer shell changes during the day, as the concentrated sunlight strikes the tower and casts light and shade over the tower. The envelope was designed by architects Eran Ziv and Yizhar Kedmi after winning an international design competition.

3.      The Power Block area: a steam-based electricity production center with operational and logistics buildings. After being processed in the turbine, the steam returns as water to the solar power tower for second use in a close circuit. The power block is located in the center of the power station and covers an area of 3,500 square meters.

 

The main visual element that was highlighted in this project is the visibility from near and afar, while taking into consideration the proportions of the various components of the station.

The heliostat and the Power Block, horizontal elements that take most of the space, are viewed close to the ground, while the vertical, iconic, solar power tower has the sky and the open desert.as a backdrop. The materials used in the project reflect the dominant colors of the area; the horizontal elements will reflect the hues of the hills and land, and the tower will reflect the ever-changing sky.

 

For the full article- Mivnim>>

 

 

 

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