Thermo-economic analysis of a cold storage system in full and partial modes with two different scenarios: A case study

Shaibani, Ali Reza; Keshtkar, Mohammad Mehdi; Talebizadehsardari, Pouyan

doi:10.1016/j.est.2019.100783

Cited by 23 publications

(9 citation statements)

References 18 publications

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“…and has been employed in various applications such as solar and geothermal systems, building heat exchangers, air conditioning systems, power plants and waste heat recovery [4,5].…”

Section: 𝐴 𝑚mentioning

confidence: 99%

Discharge of a composite metal foam/phase change material to air heat exchanger for a domestic thermal storage unit

et al. 2020

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This paper evaluates the discharging mechanism in a PCM (phase change material) to air heat exchanger for the purpose of space heating using a composite of copper foam and PCM. The composite system is modelled with both 2-D and 3-D computational fluid dynamics approach for different inlet air temperatures to consider the effect of room temperature using the thermal non-equilibrium model for the porous medium compared with the thermal equilibrium one.The results show the significant advantages of composite heat exchanger compared with a PCM only case. For the inlet air temperature of 22°C, the composite unit is solidified in 43% shorter time with 73% higher heat retrieval rate compared with that for the PCM only. After 10 hours, the temperature variation between the inlet and outlet of the air channels for latent heat storage heat exchanger system with the composite system is 41°C and 34°C for the inlet air temperatures of 0°C and 22°C, respectively, while it is 33°C and 29°C for the system with PCM only. This study show the possible usage of PCMs in the energy storage heaters by introducing metal foams which is not possible using PCM only alternatives.

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“…and has been employed in various applications such as solar and geothermal systems, building heat exchangers, air conditioning systems, power plants and waste heat recovery [4,5].…”

Section: 𝐴 𝑚mentioning

confidence: 99%

Discharge of a composite metal foam/phase change material to air heat exchanger for a domestic thermal storage unit

et al. 2020

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“…Although the two different techniques have been studied before, merging the two approaches as proposed in this research has never been studied or applied on the hot humid and hot dry climates together. The classification of cold storage technologies includes sensible thermal storage technologies (such as chilled water storage) and latent thermal energy storage technologies (such as ice storage) (Shaibani et al 2019;Talukdar et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Utilizing the solar thermal ice storage system in improving the energy, exergy, economic and environmental assessment of conventional air conditioning system

ElHelw¹,

El‐Maghlany²,

Ismail³

2021

Preprint

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This paper introduces novel modification for conventional air conditioning systems through utilizing a thermal ice storage system integrated with solar panels. Alexandria and Aswan, cities in Egypt, are chosen to represent two climates for hot-humid and hot-dry climates respectively. The governing equations for both heat and mass transfer are theoretically solved. Exergy analysis is performed for the proposed solar-ice thermal storage system via determining exergy destruction on ice and solar components as well as the total destruction based on transient analysis. This study was carried out on two common types of air conditioning systems, an air handling unit and fan coil unit. Results showed that, solar-ice storage system is more effective approach in hot-humid climate than hot-dry climate and more efficient with all-water air conditioning system than with all-air conditioning system. The maximum energy saving is 205.16 GJ having a percent of 27.5% in August for all water system in case of Alexandria city and 224.67 GJ with a percent of 25.38% in August for all-water system in case of Aswan city. All air system simulation showed maximum energy saving of 175.05 GJ with a percent of 18.13 % in case of August for Alexandria and 175.45 GJ having a percentage of 17.43% in case of Aswan in August. Moreover, the all-water system achieved a reduction in CO2 emissions by 467 tons/year in Aswan city and 390 tons/year in case of Alexandria city. While these reductions decrease to be 435 and 353 tons/year when the all-air system used for the same two cities.

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“…Among different energy storage technologies, Thermal Energy Storage (TES) provides an effective peak-shaving technology used in thermal energy demand, efficient use of energy, recovery from low-grade heat waste, as well as uniformity of the distributed energy and backup energy systems (Kabeel, A. E. et al, 2019a,b;Shaibani et al, 2019). In Europe, around 1.4 million GWh/year and 400 million tons of CO 2 emissions are estimated to be saved by TES (Sarbu and Sebarchievici, 2016).…”

Section: Introductionmentioning

confidence: 99%

Energy recovery from domestic radiators using a compact composite metal Foam/PCM latent heat storage

Talebizadehsardari

Mahani

Giddings

et al. 2020

Journal of Cleaner Production

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With the increasing demand for energy consumption in domestic buildings and consequent CO 2 emission, there is a need to provide proper products to reduce energy loss. Domestic radiators for space heating can be improved by using a Compact Latent Heat Storage (CLHS) unit mounted on the wall side surface in order to offer energy saving and peak-shaving. The unit offers the potential to save otherwise wasted energy from the back surface of the radiator to the walls in the charging mode of the energy storage system. When the heating system is turned off, the CLHS unit discharges the stored heat towards the room to provide a uniform temperature on the surface of the radiator. An aluminium foam embedded inside the bulk Phase Change Material (PCM) can modify the heat storage/retrieval rate. A PCM is selected depending on the radiator's surface temperature, which is almost equal to the hot water temperature delivered to the radiator. Different metal foam porosities are examined and compared with the PCM-only alternative (i.e. without metal foam enhancement). The results show the porous-PCM CLHS alternative provides an almost constant temperature during the discharging process equal to 54°C. However, for the PCM-only alternative, the temperature of the surface reduces continuously. Using the porous medium results in a shorter melting time, about 95% of what is needed for the PCM-only alternative. Increasing the metal foam porosity results in shorter charging/discharging time; however, since the surface temperature of the porous-PCM unit is almost constant for different metal foam porosities, a system with higher porosity (97%) is desirable.

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Thermo-economic analysis of a cold storage system in full and partial modes with two different scenarios: A case study

Cited by 23 publications

References 18 publications

Discharge of a composite metal foam/phase change material to air heat exchanger for a domestic thermal storage unit

Discharge of a composite metal foam/phase change material to air heat exchanger for a domestic thermal storage unit

Utilizing the solar thermal ice storage system in improving the energy, exergy, economic and environmental assessment of conventional air conditioning system

Energy recovery from domestic radiators using a compact composite metal Foam/PCM latent heat storage

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