Experimental investigation on charging and discharging performance of absorption thermal energy storage system

Zhang, Xiaoling; Li, Minzhi; Shi, Wenxing; Wang, Baolong; Li, Xianting

doi:10.1016/j.enconman.2014.05.100

Cited by 93 publications

(21 citation statements)

References 14 publications

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“…Hot air passes through the sorbent and leaves the sorption reactor with increased moisture content (4). Moist warm air transfers sensible heat to an external line with a heat exchanger (5). The output air from the heat exchanger is close to saturation.…”

Section: Numerical Analysis Of Heat-store Systemmentioning

confidence: 99%

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Numerical and experimental analysis of a novel heat pump driven sorption storage heater

et al. 2018

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• A novel heat pump driven sorption storage heater system was investigated. • System enables utilizing PV panels or off peak electricity tariff to store heat. • Five different sorbents were investigated in the developed system. • System provides an energy density of 170 kW h/m 3 with the use of V-CaCl 2 as sorbent. • Overall system heating COP was found 2.4 for long term operation (∼1200 mins).

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Section: Numerical Analysis Of Heat-store Systemmentioning

confidence: 99%

“…In this context, a vast amount of research has been performed on the development of new, efficient thermal energy storage (TES) technologies and materials to improve the utilization of solar air and water heating systems [3][4][5]. Technologies incorporating electrically sourced heating systems (i.e.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental analysis of a novel heat pump driven sorption storage heater

et al. 2018

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“…Therefore, such materials cannot be heated directly by an electrical heating tube. A heat storage system was designed using inorganic PCM LiBr-H 2 O (Zhang et al, 2014), and tests showed increased effectiveness in providing domestic hot water as compared to traditional water heaters. A solar water heater using a phase-change storage tank of organic PCESM paraffin wax was built, in which solar energy was collected and stored in the phase-change storage tank by a finned pipe (Naghavi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Using Organic Phase-Change Materials for Enhanced Energy Storage in Water Heaters: An Experimental Study

et al. 2019

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Organic phase-change material for enhanced energy storage was prepared by adding SiO 2 particles in a certain proportion into molten palmitic acid (PA) with stirring and intensive sonication at a constant temperature. The thermal properties of the SiO 2 /PA composite were experimentally characterized. As compared with pure PA, the latent heat capacity of the composite with the addition of 3 wt% SiO 2 particles is increased by 51.7 kJ/kg, reaching 214.7 kJ/kg, which is the highest value among the composites tested with varying SiO 2 ratio from 1 to 5 wt%; the thermal conductivity of the 3 wt% SiO 2 /PA composite is also increased by 12% at 30 • C (solid state) and 7% at 70 • C (liquid state), respectively. A water heater was built and tested with embedded capsules containing the 3 wt% SiO 2 /PA composite and pure PA, respectively. The lab-built phase-change water heater is much smaller in size than an ordinary household water heater in comparison and uses reduced electrical power. However, it responds faster and has a larger volume ratio of hot water output to water heater size. During the turning-off test, the water heater with 3 wt% SiO 2 /PA can provide 2.23 times hot water volume of heater size; while the ordinary water heater can only provide 1.41 times hot water volume of tank size.

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“…Their operating conditions are compatible with the use of conventional solar heat collectors, thus contributing to more sustainable energies. Several research projects have been developed around this technology in recent years (Zhang et al, 2014;Ibrahim et al, 2017). However, until now no absorption system has reached the commercial stage, because of the difficulty finding an ideal absorption couple for this technology.…”

Section: Introductionmentioning

confidence: 99%

“…Different reasons were pointed out: the use of copper alloy for the tubes of the absorber/desorber heat exchangers, which did not prove to be corrosion-resistant to the LiBr solution; the presence of noncondensable gases in the reactor; and wettability problems. Zhang et al (2014) also designed and constructed an interseasonal absorption thermal energy storage prototype, using the LiBr/H2O couple. Experimental results associated with the discharging mode for space heating applications gave heating rates between 12 kW and 7 kW, with the higher values present for a short time at the beginning of the test.…”

Section: Introductionmentioning

confidence: 99%

Long-term solar heat storage process by absorption with the KCOOH/H2O couple: Experimental investigation

Pierrès

Huaylla

Stutz

et al. 2017

Energy

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This paper presents experimental results obtained with a prototype of a solar heat storage absorption process using the KCOOH/H2O couple. The process principle and the prototype tested are described, and both charging and discharging results are presented and discussed. The parameters influencing the results the most are water and solution flow on the reactor heat exchangers as well as the heat source and sink temperatures. The system's main limitation is the wetting of the exchanger plates. However, the tests prove the interest of the KCOOH/H2O couple in this type of low-temperature heat storage process.

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Experimental investigation on charging and discharging performance of absorption thermal energy storage system

Cited by 93 publications

References 14 publications

Numerical and experimental analysis of a novel heat pump driven sorption storage heater

Numerical and experimental analysis of a novel heat pump driven sorption storage heater

Using Organic Phase-Change Materials for Enhanced Energy Storage in Water Heaters: An Experimental Study

Long-term solar heat storage process by absorption with the KCOOH/H2O couple: Experimental investigation

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