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Design of Molten Salt Thermal Storage Tank

Abd Rashid, Mumtaz Hayati (2012) Design of Molten Salt Thermal Storage Tank. UNIVERSITI TEKNOLOGI PETRONAS, UNIVERSITI TEKNOLOGI PETRONAS. (Unpublished)

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Abstract

Malaysia is located near the equator. Therefore, it receives equal hours of day and night. Malaysia also receives sunshine throughout the year. However it is not continuous. There are days where there is less sunlight due to rain, windy days, monsoon season and etc. The amount of sunlight days in Malaysia is about 60-70% in a year. The amount of solar irradiations receive by Malaysia is approximately 400 to 800 W/m2. The sunshine during daylight provides us with great quantity of thermal energy. Therefore, solar thermal energy available throughout the day is important to be used for the night time and other sunless days. This paper is prepared to design a Molten Salt Thermal Storage Tank to store an amount of thermal energy for the night usage. This design is conducted based on the weather data obtained throughout year 2008 in Ipoh, Malaysia. The following objectives are to be met for the design of Salt Thermal Storage Tank: 1. To calculate the available amount of solar energy during the day time. 2. Select a suitable media (molten salt) to store thermal energy. 3. To design an underground thermal energy storage to store the excess energy during the daytime. Designing a storage tank is to conserve the thermal energy that is produced by the sun during the day and use the stored thermal energy to be converted to electricity using turbines. This report includes the selection of material and the design of the thermal storage tank. Research and analysis have been done to determine the available solar radiations which will be used to calculate the available amount of heat energy that can be stored daily. The design of the Molten Salt Thermal Storage Tank is designed based on the calculations done using the available weather data. The results show the daily available power in Ipoh would be 3000Whr/m2. This includes approximately 6 hours of sunshine daily. For this design, Sodium Nitrate (NaNO3) is used as the heat transfer fluid. An insulated storage tank of volume 1.8 m3 containing 0.85 m3 of NaNO3 is placed underground to reduce the heat loss. The amount of energy stored in the storage tank is 20 MJ daily.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Metals alloys - Phase transformation
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Sharifah Fahimah Saiyed Yoep
Date Deposited: 01 Apr 2013 11:33
Last Modified: 25 Jan 2017 09:39
URI: http://utpedia.utp.edu.my/id/eprint/6184

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