Numerical and experimental study of inlet-outlet locations effect in horizontal storage tank of solar water heater

Assari, Mohammad Reza; Tabrizi, Hassan Basirat; Savadkohy, Morteza

doi:10.1016/j.seta.2017.12.009

Cited by 37 publications

(18 citation statements)

References 7 publications

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“…The analysis provided implications on an optimal design of LHTES systems in practical CSP plants. Assari et al [14] studied the TES performance with the different inlet and outlet location of the fluid in horizontal cylindrical tank by numerical and experimental method. The results showed that an appropriate location for the hot water inlet resulted in better thermal stratification in the storage tank, in addition, an appropriate location for the cold water outlet resulted a better collector efficiency, which both increased the performance of solar water heater system.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations on Charging/Discharging Performance of a Novel Truncated Cone Thermal Energy Storage Tank on a Concentrated Solar Power System

Mao

Liu

2019

International Journal of Photoenergy

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Developing a concentrated solar power (CSP) technology is one of the most effective methods to solve energy shortage and environmental pollution all over the world. Thermal energy storage (TES) system coupling with phase change materials (PCM) is one of the most significant methods to mitigate the intermittence of solar energy. In this paper, firstly, a 2D physical and mathematical model of a novel truncated cone shell-and-tube TES tank has been proposed based on enthalpy method. Secondly, the performance during the charging/discharging process of the truncated cone tank has been compared with the traditional cylindrical tank. Finally, the effects of inlet conditions of heat transfer fluid (HTF), and thickness of tube on the charging/discharging process, stored/released energy capacity; energy storage/release rate and heat storage efficiency have been investigated. The results show that the performance of truncated cone tank is better, and the charging/discharging time reduces 32.08% and 21.59%, respectively, compared with the cylindrical tank. The effect of wall thickness on the truncated cone TES tank can be ignored. And the inlet temperature and velocity of HTF have the significant influence on the charging/discharging performance of TES tank. And the maximum heat storage efficiency of the truncated cone TES tank can reach 93%. However, some appropriate methods should be taken for improving the thermal energy utilization rate of HTF in the future. This research will provide insights and significant reference towards geometric design and operating conditions in TES system.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigations on Charging/Discharging Performance of a Novel Truncated Cone Thermal Energy Storage Tank on a Concentrated Solar Power System

Mao

Liu

2019

International Journal of Photoenergy

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“…Secondly, water flows from a region of high pressure to a region of low pressure. By providing an outlet to the container [8], the velocity at the outlet increases, the pressure at the vicinity of the outlet decreases [9]. Thirdly, fluidity of water could flow through wide and tight spaces alike [10].…”

Section: Theorymentioning

confidence: 99%

Modelling of StormPav Green Pavement System Using Storm Water Management Model and SolidWorks Flow Simulation

Ching

Mah

Marlinda³

2019

IJRTE

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Storm Water Management Model (SWMM) and SolidWorks Flow Simulation (SW-FS) models to represent StormPav Green Pavement System are tested through a case study of commercial premises. Modelling effort of simplifying the complex StormPav system to take in only the effective storage volume is attempted using the 1D SWMM. A 3D modelling of capturing the multi-compartmental and multi-unit StormPav system is attempted using SW-FS. The modelling outputs in terms of velocity distribution within the StormPav system of the two developed models are found to reasonably matched.

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“…Assari et al [16] investigated the impact of the water inlet and outlet location of the fluid on thermal performance in a cylindrical storage tank. It was found that location of hot water inlet to the tank has a high impact on performance enhancement.…”

Section: Introductionmentioning

confidence: 99%

A Research on the 4th Generation Intelligent Energy-Saving Solar Water Heating Tank

Lee

et al. 2020

Electronics

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Currently, the 1st generation and 2nd generation solar water heating tanks’ design is unsatisfactory in the current use situation. When hot water is used with the hot water being consumed, thus cold water will be added into the same tank at the same time, resulting in a significant drop in the temperature of the hot water in the tank and making it necessary to use an additional electric heating rod for reheating. To address this shortcoming, a 3rd generation solar water heating tank was designed to improve the situation. In other words, a “movable dividing disk” is added inside the tank to completely isolate the hot water from the cold water so that the entire tank of hot water can be 100% utilized. However, when the hot water is exhausted, the 3rd generation solar water heating tank must adopt an electric heating rod to reheat the entire tank of water or make an additional small heating tank. To solve this problem, this article develops the 4th generation intelligent energy-saving solar water heating tank, in which a “fixed dividing disk” is installed inside the water heating tank to create a cold-water heating zone of about 10% of the total capacity for local heating. This allows for an efficient and faster hot water supply, saving about 90% of energy when the first tank of hot water is used up and a separate electric heating rod is used for heating.

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Numerical and experimental study of inlet-outlet locations effect in horizontal storage tank of solar water heater

Cited by 37 publications

References 7 publications

Numerical Investigations on Charging/Discharging Performance of a Novel Truncated Cone Thermal Energy Storage Tank on a Concentrated Solar Power System

Numerical Investigations on Charging/Discharging Performance of a Novel Truncated Cone Thermal Energy Storage Tank on a Concentrated Solar Power System

Modelling of StormPav Green Pavement System Using Storm Water Management Model and SolidWorks Flow Simulation

A Research on the 4th Generation Intelligent Energy-Saving Solar Water Heating Tank

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