Design of a seasonal thermal energy storage in the ground

Reuß, Manfred; Beck, M.; Müller, Josef

doi:10.1016/s0038-092x(97)00011-x

Cited by 84 publications

(46 citation statements)

References 2 publications

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“…Nevertheless, this type of thermal storage system, as in Example 2, still saves 31% of the heat transfer fluid. Thermal energy storage in soil (Nassar et al, 2006), concrete (Zhang et al, 2004;Laing at al., 2006;Reuss et al, 1997), and in sands (Wyman, 1980) has similar features to that of the Example 2. When the heat transfer performance (the multiplication of the heat transfer coefficient and the heat transfer area) between the heat transfer fluid and thermal storage material is poor, the energy delivery effectiveness can be rather low.…”

Section: Temperature Variations In a Discharge Processsupporting

confidence: 55%

Transient Heat Transfer and Energy Transport in Packed Bed Thermal Storage Systems

Li¹,

Lew²,

Karaki³

et al. 2011

Developments in Heat Transfer

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Section: Temperature Variations In a Discharge Processsupporting

confidence: 55%

Transient Heat Transfer and Energy Transport in Packed Bed Thermal Storage Systems

Li¹,

Lew²,

Karaki³

et al. 2011

Developments in Heat Transfer

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“…Sensible heat storage is a relatively mature technology that has been implemented and evaluated in many large-scale demonstration plants due to its low-cost and reliability. The storage materials are generally water [5], rock-sort material [6] and ground/soil [7]. However, this method has obvious drawbacks of low energy storage density and unsteady heat output temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental verification showed that sorption thermal battery can achieve combined deep-freezing cold and heat energy storage, and its working temperature can be easily adjusted by changing system pressure. The cold and heat energy densities are as high as 600kJ/kg and 1498kJ/kg, respectively using consolidated composite sorbent of expanded 7 graphite/manganese chloride-ammonia [23]. Moreover, sorption thermal battery can achieve cascaded thermal energy storage to enhance the versatility and working reliability of solar heat storage system by using solid-gas thermochemical multilevel sorption processes with several reactive salts [24].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on a dual-mode thermochemical sorption energy storage system

Yan

et al. 2017

Energy

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A dual-mode seasonal solar thermochemical sorption energy storage system using working pair of expanded graphite/SrCl2-NH3 was constructed and investigated. Solar thermal energy is transformed into chemical bonds in summer, and the stored energy is released in the form of chemical reaction heat in winter. Two working modes are performed to produce heat with expected temperature according to the different ambient temperatures in winter. The direct heating supply mode is adopted at a relatively high ambient temperature. The effective energy storage density is higher than 700kJ/kg and the corresponding system COP is 0.41 when the heat output temperature and ambient Experimental results showed the advanced dual-mode thermochemical sorption energy storage technology is feasible and effective for seasonal solar thermal energy storage.

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“…The improvements of the method for such study consist in the evaluation of the temperature, moisture profiles and the cumulated energy in the deep soil (between 20, 40 cm) (Reuss. M et al [5] Lamard. E et al [6] ).…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance of a Solar Heat Storage Accumulator Used For Greenhouses Conditioning

Hazami¹,

Kooli²,

Lazaar³

et al. 2005

American J. of Environmental Sciences

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Abstract:The use of solar energy for greenhouse heating has gained an increasing acceptance during the last years. Active solar systems applied to greenhouses can supply a significant part of the heating requirements. However, there are some problems related to the cost of the heat collection unit and the heat storage methods. In this context several techniques were born. The most famous of these techniques is the seasonal storage of thermal heat in soil. The objective of our work is to study a system of thermal energy storage conceived in our Laboratory (LEPT, Tunisia). The system is composed of a vat having a large dimension (6 m 3 ) filled with fin sand. Inside the vat three batteries of capillary exchangers are buried at three different levels. To heat the accumulator soil, we use a solar collector with a surface equal to 6 m 2 . In order to size the heat accumulating system, a numerical study is started. It allows evaluating the soil temperature as well as the energy cumulated inside the accumulator during the charging and the discharging period.

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Design of a seasonal thermal energy storage in the ground

Cited by 84 publications

References 2 publications

Transient Heat Transfer and Energy Transport in Packed Bed Thermal Storage Systems

Transient Heat Transfer and Energy Transport in Packed Bed Thermal Storage Systems

Experimental investigation on a dual-mode thermochemical sorption energy storage system

Thermal Performance of a Solar Heat Storage Accumulator Used For Greenhouses Conditioning

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