Performance of direct contact latent heat storage unit

Journal Article · Sun Jan 01 00:00:00 EST 1989 · Solar Energy; (USA)

DOI:https://doi.org/10.1016/0038-092X(89)90023-6· OSTI ID:5061271

Farid, M; Yacoub, K ^[1]

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1. Univ. of Basrah (Iraq)

The performance of direct contact latent heat storage unit has been investigated in a glass column having an inside diameter and length of 0.2 m and 1.5 m respectively. Kerosene, as a heat transfer fluid, was bubbled through the continuous phase which was a solution of one of the hydrated salts: Na{sub 2}CO{sub 3}{center dot}10H{sub 2}O, Na{sub 2}SO{sub 4}{center dot}10H{sub 2}O, and Na{sub 2}HPO{sub 4}{center dot}12H{sub 2}O. The continuous phase temperature at different heights together with the kerosene inlet and outlet temperatures were measured with time during both heat charge and discharge. Theoretical prediction of the performance of the unit has been achieved employing the model for drop with internal circulation which was used to evaluate the transfer efficiency. Thermal efficiency of the nit was found to increase with the larger column. A sharp decrease in the magnitude of the heat transfer coefficient was observed soon after crystallization started. The coefficient increased significantly at higher kerosene flow rates due to the information of smaller bubbles.

• OSTI ID: 5061271
• Journal Information: Solar Energy; (USA), Vol. 43:4; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
THERMAL ENERGY STORAGE EQUIPMENT
PERFORMANCE
DESIGN
HEAT TRANSFER
KEROSENE
LATENT HEAT STORAGE
PHASE CHANGE MATERIALS
THERMAL EFFICIENCY
EFFICIENCY
ENERGY STORAGE
ENERGY TRANSFER
EQUIPMENT
FUELS
HEAT STORAGE
LIQUID FUELS
MATERIALS
PETROLEUM PRODUCTS
STORAGE
142000* - Solar Energy- Heat Storage- (1980-)