Arylazopyrazole-Based Dendrimer Solar Thermal Fuels: Stable Visible Light Storage and Controllable Heat Release

2021 ◽  
Author(s):  
Xingtang Xu ◽  
Bo Wu ◽  
Peng Zhang ◽  
Youmei Xing ◽  
Ke Shi ◽  
...  
Keyword(s):  
Visible Light ◽  
Heat Release ◽  
Solar Thermal ◽  
Light Storage

Azobenzene-based solar thermal energy storage enhanced by gold nanoparticles for rapid, optically-triggered heat release at room temperature

2020 ◽  
Vol 8 (36) ◽  
pp. 18668-18676 ◽  
Author(s):  
Liqi Dong ◽  
Yuanhao Chen ◽  
Fei Zhai ◽  
Lin Tang ◽  
Wenchao Gao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Energy Storage ◽  
Heat Release ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Room Temperature ◽  
Solar Thermal ◽  
Solar Thermal Energy

The energy storage and heat release of this STF sample can be controlled completely using light alone at room temperature.

An energy-dense and thermal-stable bis-azobenzene/hybrid templated assembly for solar thermal fuel

2016 ◽  
Vol 4 (21) ◽  
pp. 8020-8028 ◽  
Author(s):  
Wei Feng ◽  
Shipei Li ◽  
Man Li ◽  
Chengqun Qin ◽  
Yiyu Feng
Keyword(s):  
Energy Density ◽  
Heat Release ◽  
Power Density ◽  
High Power ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
High Power Density ◽  
Hybrid Assembly ◽  
Thermal Stable

A bis-azobenzene/hybrid assembly combining high energy density, high power density and tunable heat release was presented.

scholarly journals Co-harvesting Solar Energy with Ambient Heat and On-Demand Release of Thermal Energy Below 0 oC Through Visible-Light-Controlled Photochemical Phase Transitions of Azopyrazoles

2021 ◽  
Author(s):  
Zhichun Shangguan ◽  
Wenjin Sun ◽  
Zhao-yang Zhang ◽  
Dong Fang ◽  
Si Wu ◽  
...  
Keyword(s):  
Visible Light ◽  
Uv Light ◽  
Green Light ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
On Demand ◽  
Thermal Batteries ◽  
Liquid Transition ◽  
532 Nm

Photochemical crystal-to-liquid transition generally needs UV light as a stimulus and it is even more challenging to carry out below 0 oC. Here, we design a series of 4-alkylthioarylazopyrazoles as molecular solar thermal batteries, which show bidirectional visible-light-triggered photochemical trans-crystal ↔ cis-liquid transitions below ice point (-1 oC). Through co-harvesting visible-light energy and low-temperature ambient heat, high energy density (0.25 MJ kg-1) is achieved. Further, the rechargeable solar thermal batteries devices are fabricated, which can be charged by blue light (400 nm) at -1 oC. Then, the charged devices can release energy on demand in the form of high-temperature heat. Under green light (532 nm) irradiation, the temperature difference between the charged devices and the ice-cold surrounding is up to 13.5 oC. This study paves the way for the design of advanced molecular solar thermal batteries that store both natural sunlight and ambient heat over a wide temperature range.

scholarly journals Molecular solar thermal systems – control of light harvesting and energy storage by protonation/deprotonation

RSC Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 6356-6364 ◽  
Author(s):  
Martin Drøhse Kilde ◽  
Paloma Garcia Arroyo ◽  
Anders S. Gertsen ◽  
Kurt V. Mikkelsen ◽  
Mogens Brøndsted Nielsen
Keyword(s):  
Optical Properties ◽  
Energy Storage ◽  
Heat Release ◽  
Reaction Rate ◽  
Light Harvesting ◽  
Solar Thermal ◽  
Back Reaction ◽  
Thermal Systems ◽  
Systems Control

The optical properties of pyridyl-substituted dihydroazulene (DHA) photoswitches can be tuned by protonation/deprotonation as well as the thermal back-reaction rate and amount of heat release from the vinylheptafulvene (VHF) photoisomers.

Visible-light photocatalytic, solar thermal and photoelectrochemical properties of aluminium-reduced black titania

2013 ◽  
Vol 6 (10) ◽  
pp. 3007 ◽  
Author(s):  
Zhou Wang ◽  
Chongyin Yang ◽  
Tianquan Lin ◽  
Hao Yin ◽  
Ping Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Solar Thermal ◽  
Photoelectrochemical Properties ◽  
Visible Light Photocatalytic

A Study on the Solar-Thermal Performance in PV/T System

2012 ◽  
Vol 608-609 ◽  
pp. 74-81
Author(s):  
Qing Shan Zhou ◽  
Zhi Gang Zhang
Keyword(s):  
Heat Release ◽  
Conversion Efficiency ◽  
Thermal Performance ◽  
Thermal Efficiency ◽  
Thermal Equilibrium ◽  
Meteorological Parameters ◽  
Solar Thermal ◽  
Photovoltaic Panels ◽  
Plate Spacing ◽  
T System

Based on the thermal equilibrium between the PV panels and the glazing cover of PV/T system, the influence of the spacing between PV panels and glazing cover on the solar-thermal efficiency is discussed. The heat release and solar-heat conversion efficiency of the photovoltaic panels, under different plate spacing, in the PV/T systems in summer are calculated, according to the typical annual meteorological parameters of Tianjin area. The results show that the photo-thermal efficiency of the PV/T system can be improved by appropriate setup of the plate spacing, and the optimal plate spacing is affected by the temperature of photovoltaic panels.

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