Heat extraction from salinity-gradient solar ponds using heat pipe heat exchangers

Tundee, Sura; Terdtoon, Pradit; Sakulchangsatjatai, Phrut; Singh, Randeep; Akbarzadeh, Aliakbar

doi:10.1016/j.solener.2010.04.010

Cited by 64 publications

(26 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To understand the energy behavior in buildings characterized by different climatic conditions, and examine the maximum dimensioning of the system suggested, the simulation of the heat exchanges phenomenon between the building and the outdoor environment in the following cities was studied ( Figure 5 Figure 6 reports the maximum power required for the cooling of the building (ratio: (S/V) of 0.82 m 2 /m 3 ) in the cities taken into consideration. Concerning Abu Dhabi, which occasionally reported air temperatures values that were higher than those expected for the functioning of the components of the absorption machines transferring heat to the environment, the solution was to exploit the heat exchanged with the soil through geothermal probes [26][27][28]. This solution must also be examined in terms of financial feasibility.…”

Section: Buildingmentioning

confidence: 99%

“…Concerning Abu Dhabi, which occasionally reported air temperatures values that were higher than those expected for the functioning of the components of the absorption machines transferring heat to the environment, the solution was to exploit the heat exchanged with the soil through geothermal probes [26][27][28]. This solution must also be examined in terms of financial feasibility.…”

Section: Buildingmentioning

confidence: 99%

“…Finally, assuming that the building had been cooled through a compression chiller system (from now on, Solution A), the electric power consumed by the machine was determined considering a variable COP and affected by the operating temperatures of the air-cooled condenser. The emission coefficients (expressed in CO 2 for each electric kWh generated by the national energy mix) are reported in Figure 8 [27][28][29][30][31][32]. Thanks to these coefficients, it was possible to estimate ( Figure 8) the amount of carbon dioxide (a climate-change gas, able to damage the environment) that, thanks to the exertion of the system suggested, is not annually emitted into the atmosphere (i.e., if the installation of a traditional vapor compression refrigeration system supplied by electric energy were avoided).…”

Section: Energy Analysis Of the System According To Different Climatimentioning

confidence: 99%

“…The emission coefficients (expressed in CO2 for each electric kWh generated by the national energy mix) are reported in Figure 8 [27][28][29][30][31][32]. Thanks to these coefficients, it was possible to estimate ( Figure 8 …”

Section: Energy Analysis Of the System According To Different Climatimentioning

confidence: 99%

See 3 more Smart Citations

Application of Absorption Systems Powered by Solar Ponds in Warm Climates for the Air Conditioning in Residential Buildings

et al. 2016

View full text Add to dashboard Cite

Abstract:The increasing importance of a significant reduction of CO 2 emissions in the atmosphere asks the scientific community to find other solutions than fossil fuels with respect to the air conditioning of indoor environments. Nowadays, a priority is represented by the energy expenses reduction, in which residential buildings report one of the highest energy consumption levels among developed countries. The application of alternative energies in residential buildings is an issue debated in the European Commission for the reduction of greenhouse gas emissions with the objective to obtain 20% of the demand from renewable sources. This paper suggests the application of the solar energy stored in solar ponds to air-condition small residential buildings, through the use of absorption machines. A feasibility analysis was carried out in some places characterized by climates that are suitable to make the solution here suggested sustainable from an energetic point of view. Buildings characterized by different boundary surface/volume ratios were examined and the energy saving, the amount of CO 2 that was not emitted in the environment and the return of investments with respect to a more traditional solution were evaluated.

show abstract

Section: Buildingmentioning

confidence: 99%

Section: Buildingmentioning

confidence: 99%

Section: Energy Analysis Of the System According To Different Climatimentioning

confidence: 99%

Section: Energy Analysis Of the System According To Different Climatimentioning

confidence: 99%

See 2 more Smart Citations

Application of Absorption Systems Powered by Solar Ponds in Warm Climates for the Air Conditioning in Residential Buildings

et al. 2016

View full text Add to dashboard Cite

show abstract

“…A cross-sectional schematic with the geometric parameters of the HSTE and the equivalent thermal resistance model (Prasher, 2003;Tundee et al, 2010) are shown in Figures 2a and 2b, respectively. A solar parabolic concentrator ( Figure 1) focuses sunlight (Q solar ) on a selective surface (SS) with a low thermal emissivity and high solar absorbtivity.…”

Section: Model Formulationmentioning

confidence: 99%

Modeling and optimization of hybrid solar thermoelectric systems with thermosyphons

2011

View full text Add to dashboard Cite

We present the modeling and optimization of a new hybrid solar thermoelectric (HSTE) system which uses a thermosyphon to passively transfer heat to a bottoming cycle for various applications. A parabolic trough mirror concentrates solar energy onto a selective surface coated thermoelectric to produce electrical power. Meanwhile, a thermosyphon adjacent to the back side of the thermoelectric maintains the temperature of the cold junction and carries the remaining thermal energy to a bottoming cycle. Bismuth telluride, lead telluride, and silicon germanium thermoelectrics were studied with copper-water, stainless steel-mercury, and nickel-liquid potassium thermosyphonworking fluid combinations. An energy-based model of the HSTE system with a thermal resistance network was developed to determine overall performance. In addition, the HSTE system efficiency was investigated for temperatures of 300 K -1200 K, solar concentrations of 1 -100 suns, and different thermosyphon and thermoelectric materials with a geometry resembling an evacuated tube solar collector. Optimizations of the HSTE show ideal system efficiencies as high as 52.6% can be achieved at solar concentrations of 100 suns and bottoming cycle temperatures of 776 K. For solar concentrations less than 4 suns, systems with thermosyphon wall thermal conductivities as low as 1.2 W/mK have comparable efficiencies to that of high conductivity material thermosyphons, i.e. copper, which suggests that lower cost materials including glass can be used. This work provides guidelines for the design, as well as the optimization and selection of thermoelectric and thermosyphon components for future high performance HSTE systems.

show abstract

Effect of Ground Condition on the Storage Zone Temperature of Salinity Gradient Solar Pond

Chakrabarty

Wankhede

Walke

et al. 2019

Smart Technologies for Energy, Environment and Sustainable Development

View full text Add to dashboard Cite

Heat extraction from salinity-gradient solar ponds using heat pipe heat exchangers

Cited by 64 publications

References 13 publications

Application of Absorption Systems Powered by Solar Ponds in Warm Climates for the Air Conditioning in Residential Buildings

Application of Absorption Systems Powered by Solar Ponds in Warm Climates for the Air Conditioning in Residential Buildings

Modeling and optimization of hybrid solar thermoelectric systems with thermosyphons

Effect of Ground Condition on the Storage Zone Temperature of Salinity Gradient Solar Pond

Contact Info

Product

Resources

About