Advances in seasonal thermal energy storage for solar district heating applications: A critical review on large-scale hot-water tank and pit thermal energy storage systems

Dahash, Abdulrahman; Ochs, Fabian; Janetti, Michele Bianchi; Streicher, Wolfgang

doi:10.1016/j.apenergy.2019.01.189

Cited by 248 publications

(102 citation statements)

References 113 publications

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“…95 During the charging process, the thermal energy from heat sources is supplied to the thermochemical materials (MgSO 4 , FeCO 3 , and CaCO 3 ) for dissociating the chemical compound (C) into two products (A and B). The charging process is an endothermic reaction, and it can be expressed by using Equation (3). After the charging process is completed, the two compounds, A and B, are stored separately at atmospheric temperature with minimum losses.…”

Section: Thermochemical Energy Storagementioning

confidence: 99%

Review on solar thermal energy storage technologies and their geometrical configurations

Suresh

Saini

2020

Int J Energy Res

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Summary Because of the unstable and intermittent nature of solar energy availability, a thermal energy storage system is required to integrate with the collectors to store thermal energy and retrieve it whenever it is required. Thermal energy storage not only eliminates the discrepancy between energy supply and demand but also increases the performance and reliability of energy systems and plays a crucial role in energy conservation. Under this paper, different thermal energy storage methods, heat transfer enhancement techniques, storage materials, heat transfer fluids, and geometrical configurations are discussed. A comparative assessment of various thermal energy storage methods is also presented. Sensible heat storage involves storing thermal energy within the storage medium by increasing temperature without undergoing any phase transformation, whereas latent heat storage involves storing thermal energy within the material during the transition phase. Combined thermal energy storage is the novel approach to store thermal energy by combining both sensible and latent storage. Based on the literature review, it was found that most of the researchers carried out their work on sensible and latent storage systems with the different storage media and heat transfer fluids. Limited work on a combined sensible‐latent heat thermal energy storage system with different storage materials and heat transfer fluids was carried out so far. Further, combined sensible and latent heat storage systems are reported to have a promising approach, as it reduces the cost and increases the energy storage with a stabilized outflow of temperature from the system. The studies discussed and presented in this paper may be helpful to carry out further research in this area.

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Section: Thermochemical Energy Storagementioning

confidence: 99%

Review on solar thermal energy storage technologies and their geometrical configurations

Suresh

Saini

2020

Int J Energy Res

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“…There are other types of seasonal storage systems, mainly including aquifer storages, cavern storages, pit storages, seasonal water storages, water-gravel storages, thermochemical storages, etc. [84]. The development of seasonal thermal energy storage is mainly motivated by the growing popularity of district heating [20].…”

Section: System Integrationsmentioning

confidence: 99%

Thermal Energy Storage for Solar Energy Utilization: Fundamentals and Applications

Wang¹,

Qin²,

Tong³

et al. 2020

Renewable Energy - Resources, Challenges and Applications

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Solar energy increases its popularity in many fields, from buildings, food productions to power plants and other industries, due to the clean and renewable properties. To eliminate its intermittence feature, thermal energy storage is vital for efficient and stable operation of solar energy utilization systems. It is an effective way of decoupling the energy demand and generation, while plays an important role on smoothing their fluctuations. In this chapter, various types of thermal energy storage technologies are summarized and compared, including the latest studies on the thermal energy storage materials and heat transfer enhancements. Then, the most up-to-date developments and applications of various thermal energy storage options in solar energy systems are summarized, with an emphasis on the material selections, system integrations, operational characteristics, performance assessments and technological comparisons. The emerging and future trends are finally outlined. This chapter will be a useful resource for relevant researchers, engineers, policy-makers, technology users, and engineering students in the field.

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“…Seasonal heat storage technology found its place favourably in solar energy system due to the seasonal mismatch between solar resources and heat demand [70]. Thermal storage will be more and more important for future energy system with high penetration of fluctuating renewable energy [71].…”

Section: With/without Seasonal Heat Storagementioning

confidence: 99%

Large-scale solar district heating plants in Danish smart thermal grid: Developments and recent trends

Tian

Zhang

Deng

et al. 2019

Energy Conversion and Management

145

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Large solar collector fields are very popular in district heating system in Denmark, even though the solar radiation source is not favourable at high latitudes compared to many other regions. Business models for large solar heating plants in Denmark has attracted much attention worldwide. Denmark is not only the biggest country in both total installed capacities and numbers of large solar district heating plants, but also is the first and only country with commercial market-driven solar district heating plants. By the end of 2017, more than 1.3 million m 2 solar district heating plants are in operation in Denmark. Furthermore, more than 70 % of the large solar district heating plants worldwide are constructed in Denmark. Based on the case of Denmark, this study reviews the development of large solar district heating plants in Denmark since 2006. Success factors for Danish experiences was summarized and discussed. Novel design concepts of large solar district heating plants are also addressed to clarify the future development trend. Potential integration of large solar district heating plants with other renewable energy technologies are discussed. This paper can provide references to potential countries that want to exploit the market for solar district heating plants. Policymakers can evaluate the advantages and disadvantages of solar district heating systems in the national energy planning level based on the know-how and experiences from Denmark.

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Advances in seasonal thermal energy storage for solar district heating applications: A critical review on large-scale hot-water tank and pit thermal energy storage systems

Cited by 248 publications

References 113 publications

Review on solar thermal energy storage technologies and their geometrical configurations

Review on solar thermal energy storage technologies and their geometrical configurations

Thermal Energy Storage for Solar Energy Utilization: Fundamentals and Applications

Large-scale solar district heating plants in Danish smart thermal grid: Developments and recent trends

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