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A novel energy storage system for latent heat recovery in solar still using phase change material and pulsating heat pipe
, Article Renewable Energy ; Volume 163 , 2021 , Pages 2115-2127 ; 09601481 (ISSN) ; Rajabi Ghahnavieh, A ; Shafii, M. B ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
In this study, a latent heat storage unit and built-in condenser were integrated with a solar still. Storage of dissipated latent heat of vapor during the day and using it after sunset prolongs system operation. During the day, the entire solar radiation was consumed to heat the saline water and only the heat coming from the condensation of vapor was stored in the phase change material (PCM). The dissipated heat from the condenser body was transferred to the PCM and stored. Additionally, the existence of PCM on the outer surfaces of the condenser prevented the rise of condenser wall temperature during the day and kept the condenser temperature low. After sunset, the heat stored in the PCM...
Hydrothermal synthesis of aligned Hydroxyapatite nanorods with ultra-high crystallinity
, Article International Journal of Engineering, Transactions B: Applications ; Volume 21, Issue 2 , 2008 , Pages 109-116 ; 1728-144X (ISSN) ; Rahimipour, M. R ; Yazdani, B ; Sadrnezhaad, S. K ; Amin, M. H ; Sharif University of Technology
Materials and Energy Research Center
2008
Abstract
Hydroxyapatite nanorods aligned with ultrahigh crystallinity and high-yield were successfully synthesized through a hydrothermal approach. In this experiment, a new composition of cetyltrimethylammonium bromide ((CH 3(CH2)15N+(CH3) 3Br-) was designated as CTAP)/Ca(NO3) 2/ (NH4)2HPO4/NaOH and distilled water under hydrothermal condition, to synthesize single crystal HAp nanorods with diameter of 20 ± 10 nm and length of 80 ± 20 nm, was introduced. Crystal phases were determined by X-ray diffraction (XRD). Scanning electron microscope (SEM) was applied to investigate the morphology. The microstructure of the HAp products were further observed by transmission electron microscope (TEM) and high...