scholarly journals Techno-Economic Analysis of a Solar Thermal Plant for Large-Scale Water Pasteurization

2020 ◽  
Vol 10 (14) ◽  
pp. 4771
Author(s):  
Alberto Bologna ◽  
Matteo Fasano ◽  
Luca Bergamasco ◽  
Matteo Morciano ◽  
Francesca Bersani ◽  
...  
Keyword(s):  
Energy Storage ◽  
Economic Analysis ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
Radiation Treatment ◽  
Renewable Energy Sources ◽  
Unit Cost ◽  
Solar Thermal ◽  
Plant Layout

Water pasteurization has the potential to overcome some of the drawbacks of more conventional disinfection techniques such as chlorination, ozonation and ultraviolet radiation treatment. However, the high throughput of community water systems requires energy-intensive processes, and renewable energy sources have the potential to improve the sustainability of water pasteurization plants. In case of water pasteurization by solar thermal treatment, the continuity of operation is limited by the intermittent availability of the solar irradiance. Here we show that this problem can be addressed by a proper design of the plant layout, which includes a thermal energy storage system and an auxiliary gas boiler. Based on a target pasteurization protocol validated by experiments, a complete lumped-component model of the plant is developed and used to determine the operating parameters and size of the components for a given delivery flow rate. Finally, we report an economic analysis of the proposed plant layout, which allows its optimization for different scenarios based on two design variables, namely the solar multiple and the duration of the thermal energy storage. Based on the analyzed cases, it is found that the proposed plant layouts may yield a unit cost of water treatment ranging from ≈32 EUR-cents m−3 to ≈25 EUR-cents m−3.

scholarly journals Techno-economic Analysis of High-Temperature Thermal Energy Storage for On-Demand Heat and Power

2022 ◽  
Author(s):  
Peng Peng ◽  
Lin Yang ◽  
Akanksha Menon ◽  
Nathaniel Weger ◽  
Ravi Prasher ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
High Temperature ◽  
Energy Storage ◽  
Economic Analysis ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Temperature Cycle ◽  
Storage Duration

Herein we present a concept of a high-temperature, thermal energy storage (HT-TES) system for large-scale long duration energy storage (>10 hours) applications. The system relies on tunable composite ceramic materials with high electrical conductivity and can output the stored energy flexibly in the form of heat at 1100 degrees C or higher, and as electricity. We model the performance and cost of the system in a techno-economic analysis to identify key material and system properties influencing viability. For applications with daily operation (12 hours storage duration), we find achieving levelized storage costs below US Department of Energy’s 5 ₵/kWhe (1-2.5 ₵/kWhth equivalent) target by 2030 is possible. Candidate materials should have above 600-900 high-temperature cycle stability while offering at least 104 S/m of electrical conductivity. Our results suggest this system can be economical for longer storage durations (weeks to months) when coupled with intermittent charging using surplus renewable energy sources.

Structure Optimization Research for Solar Thermal Energy Storage System

2012 ◽  
Vol 512-515 ◽  
pp. 172-177
Author(s):  
Jian Lan Li ◽  
Ya Wen Zhang ◽  
Yan Ping Zhang ◽  
Shu Hong Huang
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
Storage System ◽  
Structure Optimization ◽  
Energy Storage System ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Thermal Energy Storage System

Thermal energy storage is the main way to ensure solar power plant to generate electric in the form of stable and continuous. In this paper, a structure optimization model for large-scale, commercialization solar thermal energy storage system is proposed according to life cycle analysis. Based on the analysis of thermal energy storage medium, thermal energy storage tanks, insulation, bottom bearing structure, pump energy and land use, the optimization of thermal energy storage system is realized. Finally, the structure optimization design for 50MW solar power plant is implemented and storage tank’s geometric parameters are calculated. This research can provide technological support for large-scale application of solar thermal generation.

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.

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