Simulation of solar thermal applicatıon in a cement plant

Salehian, Shadi
This study presents solar thermal application in the most energy consuming units of a cement plant located in Gaziantep, Turkey. Cement industry is the most important energy intensive and the second largest contributor to anthropogenic greenhouse gas emissions in the world which accounts for 5-6% of global CO2 emissions. Both material and energy flows are analyzed in the system for a conventional cement industry and a solar integrated one taking the most energy-efficient innovations into account. The whole system is modeled in TRNSYS and is simulated using data from the literature. The reason TRNSYS software is used is the availability of a considerable number of variable components required to simulate thermal and electrical energy systems. The aim of this work is to assess how much electricity can be supplied by solar resources and fossil fuel energy can be replaced using solar thermal energy. By using solar hybridization at the calcination and clinkerization processes in the cement production line, fossil fuel and CO2 emission flowrates are evaluated. According to the results, the studied solar-integrated systems produce approximately half of the electrical work demand of the plant and contribute to the reduction in annual fossil fuel consumption and CO2 emission by more than 10%.


A study on blended bottom ash cements
Kaya, Ayşe İdil; Yaman, İsmail Özgür; Hoşten, Çetin; Department of Cement Engineering (2010)
Cement production which is one of the most energy intensive industries plays a significant role in emitting the greenhouse gases. Blended cement production by supplementary cementitious materials such as fly ash, ground granulated blast furnace slag and natural pozzolan is one of the smart approaches to decrease energy and ecology related concerns about the production. Fly ash has been used as a substance to produce blended cements for years, but bottom ash, its coarser counterpart, has not been utilized du...
Computational analysis of a solar energy induced vortex generator
Mohiuddin, Abdullah; Uzgoren, Eray (2016-04-05)
This study presents a computational analysis of a device that mimics dust devils in a controlled environment in order to explore its capacity as an energy conversion apparatus in solar energy applications. Concept is built upon the buoyancy effect over a heated plate surrounded by stationary vertical thin plates (vanes), which cause swirl in the raising air. The novelty of the paper is that it is the first parametric study that investigates effects of vane width, vane height, number of vanes, and vane angle...
Solar repowering of Soma-A thermal power plant
YILMAZOĞLU, MUSTAFA ZEKİ; DURMAZ, Ali; Baker, Derek Keıth (2012-12-01)
In this study, solar repowering of the Soma-A thermal power plant in Turkey is investigated using simulations. The Soma A thermal power plant began operation in 1957 and has served until 2010. In the current situation the installed capacity of the power plant is 44 MWel with two units. In the simulations full load and part load operations are considered and compared for three different cases: (1) current case; (2) solar steam generation; and, (3) solar feed water heating. Economic analyses are performed by ...
Evaluation of hybridsolar-wind-hydrogenenergy system based on methanol electrolyzer
Budak, Yagmur; DEVRİM, YILSER (Wiley, 2020-10-01)
In this study, it is aimed to meet the annual electricity and heating needs of a house without interruption with the photovoltaic panel, wind turbine, methanol electrolyzer, and high temperature proton exchange membrane fuel cell system. The system results show that the use of the 2 WT with 18 PV was enough to provide the need of the methanol electrolyzer, which provides requirements of the high temperature proton exchange membrane fuel cell. The produced heat by the fuel cell was used to meet the heat requ...
Proposal of a Novel Gravity-Fed, Particle-Filled Solar Receiver
JOHNSON, Evan; Baker, Derek Keıth; Tarı, İlker (2016-10-14)
Solar Thermal Electricity power plants utilizing solid particles as heat transfer and storage media have been proposed by several research groups, with studies citing benefits of increased thermal efficiency and lower cost. Several types of solid particle receivers have been proposed, with leading designs consisting of particles falling or suspended in air. A new solid particle receiver is proposed here, consisting of a receiver fully packed with particles flowing downward with gravity. Particle flow rate i...
Citation Formats
S. Salehian, “Simulation of solar thermal applicatıon in a cement plant,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Mechanical Engineering., Middle East Technical University, 2020.