Enhancing Thermal Performance of Hot Storage Tanks through Chimney-Type Electric Heating and Natural Circulation
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Department of Mechanical Engineering, Tafila Technical University, Tafila, Jordan
Department of Electrical and Computer Engineering, Applied Science Private University, Amman, Jordan
Department of Mechanical and Industrial Engineering, Applied Science Private University, Amman, Jordan
Department of Mechanical Engineering, Tuskegee University, Tuskegee, USA
Environmental Engineering Faculty, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, Poland
Renewable Energy Engineering Department, Faculty of Engineering, Middle East University, Amman, Jordan
College of Engineering,University of Business and Technology, Jeddah, Saudi Arabia
Department of Energy Engineering, Zarqa University, Zarqa, Jordan
Department of Thermal Science, Wrocław University of Science and Technology, Wybrzeże Wyspianskiego 27, 50-370 Wrocław, Poland
Adv. Sci. Technol. Res. J. 2024; 18(3):151-160
Hot storage tanks (HST) are known for their high energy consumption, attributed to variations in usage, heat dissipation within the tank, and heat losses to the surroundings. This study proposes a chimney-type electrically heated HST, which is investigated under static mode to enhance its thermal performance. Different natural circulation areas (chimney areas) with large (9.5 cm diameter), medium (2.5 cm diameter), and small (1.5 cm diameter) sizes were utilized to examine the effect of natural circulation on the HST performance. Additionally, the influence of chimney insulation on the HST performance was also studied. The experiments revealed that the chimney significantly affected the thermal stratification within the tank. Different chimney contact diameters (9.5 cm, 2.5 cm, and 1.5 cm) were tested, showing varying degrees of thermal stratification. The results indicated that smaller chimney contact diameters led to higher thermal stratification and more rapid heating of the top layer temperatures. However, the impact of insulation on thermal performance was inconclusive, suggesting the need for more effective insulation and further investigation into the dynamic mode of operation. The findings also highlighted the faster heating of the top outer layer compared to the larger diameter, emphasizing the significance of the chimney type electrical heater in the hot storage tank.
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