scholarly journals Polydopamine Nanoparticle Doped Nanofluid for Solar Thermal Energy Collector Efficiency Increase

2019 ◽  
Vol 4 (1) ◽  
pp. 1900101 ◽  
Author(s):  
Daniel Hauser ◽  
Lukas Steinmetz ◽  
Sandor Balog ◽  
Patricia Taladriz‐Blanco ◽  
Dedy Septiadi ◽  
...  
Keyword(s):  
Thermal Energy ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Efficiency Increase ◽  
Collector Efficiency

scholarly journals Solar Thermal Energy: Polydopamine Nanoparticle Doped Nanofluid for Solar Thermal Energy Collector Efficiency Increase (Adv. Sustainable Syst. 1/2020)

2020 ◽  
Vol 4 (1) ◽  
pp. 2070001
Author(s):  
Daniel Hauser ◽  
Lukas Steinmetz ◽  
Sandor Balog ◽  
Patricia Taladriz‐Blanco ◽  
Dedy Septiadi ◽  
...  
Keyword(s):  
Thermal Energy ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Efficiency Increase ◽  
Collector Efficiency

Performance Evaluation and Characterization of a Direct Absorption Solar Humidifier for Humidification–Dehumidification Desalination

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
Tapan Dave ◽  
Shankar Krishnan
Keyword(s):  
Thermal Energy ◽  
Solar Thermal ◽  
Present System ◽  
Solar Thermal Energy ◽  
Efficiency Curve ◽  
Local Flow ◽  
Collector Efficiency ◽  
Solar Heater ◽  
Normalized Gain

Abstract In the present work, a solar humidifier suitable for solar thermal energy-driven humidification–dehumidification desalination has been proposed and experimentally investigated. The proposed solar humidifier compacts the solar heater and humidifier into a single component while reducing energy costs by utilizing solar thermal energy. Several local flow storage and distributor elements are created in the absorber surface that produces a “dam effect” in combination with stainless steel mesh and airflow baffles. The effect of varying flowrates of air and water, inlet water temperature as well as inlet relative humidity on the performance of the solar humidifier is investigated. Humidity based normalized gain (NGhumidity) versus solar humidifier efficiency curve, which depicts a heat and mass performance of the solar humidifier, is reported. This curve is analogous to the normalized gain versus collector efficiency curve of the solar water/air heater. The productivity of the present system is compared with the published results of similar studies. Best mean productivity of 838.5 g/m2/h and best instantaneous productivity of 955.2 g/m2/h were achieved using a present solar humidifier, showcasing the effectiveness of the proposed approach. The comparison of the performance of the solar humidifier with the performance of conventional configuration having separate heating and humidification is also carried out. It was found that the investigated solar humidifier (internal heating configuration) does perform the same in terms of utilization of solar energy for evaporation, if not better, than the conventional separate humidifier and heater (external heating configuration).

Pyrazolium Phase Change Materials for Solar-Thermal and Wind Energy Storage

2019 ◽  
Author(s):  
Karolina Matuszek ◽  
R. Vijayaraghavan ◽  
Craig Forsyth ◽  
Surianarayanan Mahadevan ◽  
Mega Kar ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
High Efficiency ◽  
Scale Up ◽  
Solar Thermal ◽  
Energy Storage Materials ◽  
Solar Thermal Energy ◽  
Storage Materials

Renewable energy has the ultimate capacity to resolve the environmental and scarcity challenges of the world’s energy supplies. However, both the utility of these sources and the economics of their implementation are strongly limited by their intermittent nature; inexpensive means of energy storage therefore needs to be part of the design. Distributed thermal energy storage is surprisingly underdeveloped in this context, in part due to the lack of advanced storage materials. Here, we describe a novel family of thermal energy storage materials based on pyrazolium cation, that operate in the 100-220°C temperature range, offering safe, inexpensive capacity, opening new pathways for high efficiency collection and storage of both solar-thermal energy, as well as excess wind power. We probe the molecular origins of the high thermal energy storage capacity of these ionic materials and demonstrate extended cycling that provides a basis for further scale up and development.

An oil shale recovery system powered by solar thermal energy

Energy ◽  
2021 ◽  
Vol 225 ◽  
pp. 120096
Author(s):  
Hongjuan Hou ◽  
Qiongjie Du ◽  
Chang Huang ◽  
Le Zhang ◽  
Eric Hu
Keyword(s):  
Thermal Energy ◽  
Oil Shale ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Recovery System ◽  
Shale Recovery
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