Single cycle to combined cycle power generation

Context

The district heating net is a pipe network that supplies heating and hot water for connected consumers from a central power plant. It is a more efficient way to provide heat and power compared to localized boilers. District cooling is the cooling equivalent of district heating. Working in accordance to similar principles, district cooling delivers chilled water to buildings like offices and factories. Trigeneration is when electricity, heating and cooling are combined in the same plant.

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Windiga Energy Inc. is a private sector institution established in 2010 with the mission to develop assets in West Africa by establishing power generation facilities that will benefit the public and the government.  It is an independent power producer focused on developing, owning and operating renewable energy facilities on the African continent. The company combines its knowledge, expertise and collaboration with local governments and stakeholders to form consortiums and become a principle player in the region’s energy sector. 
 

IIGE is a research institute that promotes development, innovation and transmission of technology focused on energy efficiency and renewable energy. The institute aims to contribute to the sustainable development of the Ecuadorian society, through the implementation of energy efficient and energy renewable policies and projects.

This compilation of articles on energy and climate change is a selection of contributions from the first edition of Regards sur la Terre, an annual reference in French on the international dimensions of sustainable development.

This report aims to highlight and raise awareness about the exposure and vulnerability of the energy sector to climate change. It identifies adaptation options available to each source of energy generation as well as for the distribution and end use of electrical energy. The report focuses on electric power generation, its transmission, and its distribution. A second publication, "Guidelines for Climate Proofing Investments in the Electric Power Sector", provides a systematic project-level approach for assessing climate risk and climate-proofing investments in the sector.

Evidence from around the world suggests that the technical challenges of integrating variable renewable power generation faced by most countries leading up to 2030 can be met, and that utilities have the technical solutions available to continue to ensure reliable, clean and affordable power.

However, renewable power generation also has far reaching consequences for:

This system generates electric power by employing the heat and pressure of blast furnace top gas to drive a turbine generator. After the blast furnace gas is used in power generation, it is used as a fuel in iron and steel manufacturing processes. Blast fumace gas (BFG) has a pressure of 0.2-0.236 MPa (2-2.41 kg/cm2) and temperature of approx. 200 C at the fumace top.

Combined cycle power plants are based on combined cycle power generation technologies using both gas and steam turbines and are fueled by natural gas. A turbine is driven by the gas produced by burning the fuel, and the steam from the heat of the turbine exhaust is used to drive another turbine. The plant uses less fuel to obtain the same output from conventional plants, thus helping reduce CO2 emissions.

The Integrated coal Gasification Combined Cycle (IGCC) system consist of coal gasification process and gas turbine combined cycle. Coal is gasified in a entrained flow gasifier, whose gas is introduced to combined cycle power generation. The IGCC system has attracted attention as a major next-generation environment-friendly thermal power generation system due to its superior power generating efficiency compared to conventional coal-fired thermal power generation and ability to reduce CO2 emissions.