Scientific Research Journal, Volume IX, Issue VIII, August 2021 Edition

Scientific Research Journal

Scirj Volume IX, Issue VIII, August 2021 Edition
ISSN: 2201-2796

Publication starts: 25th August 2021
Full Paper available from: 25th August 2021

ENERGY CONSUMPTION OF YAM SLICE DRYING IN AN EXHAUST GAS WASTE HEAT RECOVERY HOT AIR TRAY DRYER
Ononogbo Chibuike, Dr. Nwufo Olisaemeka Chukwudozie, Dr. Nwakuba Nnaemeka Reginald, Dr. Okoronkwo Chukwunenye Anthony, Dr. Igbokwe Onyechege Johnson, Professor Emmanuel Enyioma Anyanwu

Abstract: Evaluation of the energy consumption during the thin-layer drying of yam slices in an exhaust gas waste heat recovery dryer is presented. The study took cognizance of some energy parameters such as the electric power consumption, thermal energy consumption and specific energy consumption during the drying process. Blanched white yam samples of different thicknesses were subjected to varying conditions of drying air temperatures and velocities of 55, 65, and 75°C; and 1.0, 1.5, and 2.0 m/s. The minimum value of electric power consumption (44.63 W-hr) was achieved at the drying air temperature and velocity of 75 ℃ and 1.0 m/s, and slice thickness of 1.0 cm; whereas a maximum value of 157.70 W-hr was obtained at the drying air temperature and velocity of 55 ℃, 2.0 m/s, and 1.0 cm slice thickness, respectively. The specific energy consumption values were in the range of 40.25 to 97.80, 52.33 to 108.79 and 58.77 to 124.16 kW-hr/kg, respectively for 1.0, 1.5 and 2.0 cm slice thicknesses. The results obtained revealed that the drying air temperature and velocity had an appreciable influence on the values of the energy consumption parameters of the dryer for the yam slice drying. It was observed that for all the experimental treatments, the higher the slice thickness of the yam samples, the higher the obtained energy consumption values.

Read Full Paper

Reference this paper

Page 1-7

Concentrated Solar Power technologies in Egypt, Morocco, and Italy, and their types
Ahmed Abdelkhalek Hashim, Abdelrahman Alaa Mohammed

Abstract: This research paper explains the importance of solar energy and the development of using concentrated solar power systems in some countries and their types. Solar power has been an exciting source of energy for many decades and is one of the most efficient energy sources of renewable sources. the IEA expected that world energy consumption will increase by 70- 100% before 2050. Many scientists wrote research papers about solar power and how it can be used in the north of Africa countries like Egypt and Morocco. The development of solar energy systems in the middle east and north Africa (MENA) has been taking new steps to the future with many devices and solutions to Harness solar power. This research paper, that showed the technologies of CSP which have been under developing and studying in the whole world especially the (MENA) countries like Morocco and Egypt. There will be also research papers that have shown that one of these technologies SPT can change the energy in the world forever. In this research paper, the idea and work mechanism of the (SPT) will be shown and explained and how did the studies explain that the (MENA) is the best area in the world to start this project that depends on the comparison between Italy and Egypt and the expectation of the results of using this device. The (SPT) device already has been proved in Morocco and it is now understudying in Egypt. As a conclusion, we figured that the (SPT) is the best (CSP) system to apply in Egypt as its efficiency is higher than the other types and Egypt can afford the place of constructing this device.

Read Full Paper

Reference this paper

Page 8-11