Development of passive dry cooling system for power plants in arid land

Sabbagh, J. A.; Khalifa, A.M.A.; Olwi, Ibrahim

doi:10.1016/0038-092x(93)90129-c

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…Water temperature can be reduced to as much as 8 • C below the ambient temperature when the sky is clear in a desert location using this technology. Using spectrally selective surfaces can improve the temperature drop to as high as 20 • C below the ambient [121]. Spectrally selective surfaces have high emittance values when wavelengths are between 8 to 13 µm and low absorption outside this range.…”

Section: Principlementioning

confidence: 99%

“…Plastic glands were used to seal the holes where the pipe and thermocouples penetrated through the separating screen. A prototype of this design was examined at a University Farm in Hada Al-Sham, Saudi Arabia [121]. The experimental pond was covered with an aluminum sheet that was painted white.…”

Section: Principlementioning

confidence: 99%

“…can improve the temperature drop to as high as 20 °C below the ambient [121]. Spectrally selective surfaces have high emittance values when wavelengths are between 8 to 13 μm and low absorption outside this range.…”

Section: Principlementioning

confidence: 99%

“…Night sky radiative cooling system used for cooling hot water from a power plant condenser (redrawn from[121]). …”

mentioning

confidence: 99%

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A Review of Underground Soil and Night Sky as Passive Heat Sink: Design Configurations and Models

Vidhi

2018

Energies

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Energy consumption for heating and cooling constitute the majority of the energy use for building loads. Using passive cooling systems to reduce the energy consumption or to make the process more efficient can be very beneficial. Ground coupled heat exchangers and night sky radiative cooling systems have been used for centuries to achieve cooling and ice making. Ground coupled heat exchangers use the temperature difference between underground soil and ambient air or water for heat transfer between the soil and the fluid passing through buried pipes. Night sky radiative cooling takes advantage of the night sky as the coldest heat sink available for heat transfer with any surface. Use of these simple designs with the modern cooling/heating systems has the potential for a major impact on the heating and cooling needs. This review paper describes the various designs, configurations and applications of these systems as well as determining the parameters that impact their performance.

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Section: Principlementioning

confidence: 99%

Section: Principlementioning

confidence: 99%

Section: Principlementioning

confidence: 99%

“…Night sky radiative cooling system used for cooling hot water from a power plant condenser (redrawn from[121]). …”

mentioning

confidence: 99%

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A Review of Underground Soil and Night Sky as Passive Heat Sink: Design Configurations and Models

Vidhi

2018

Energies

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“…Exhaustively using solar energy and extremely cold external spaces may be the final resolution to creating thermally comfortable building environments. In view of these advantages, many researchers have exerted considerable effort in exploiting renewable energy; scholars have investigated the use of porous insulation materials, Trombe walls (Eggers, 1979), adjustable solar walls (Huang, 1985), transparent insulation materials (Braun, 1992), Tedlar covered roofs (Michell and Biggs, 1979), roofs covered with selective radiative cooling materials (Addeo et al, 1980), and white aluminum sheet covered ponds (Sabbagh et al, 1993). Although these methods considerably reduce fossil fuel consumption, the corresponding materials and devices may be excessively complex and expensive.…”

Section: Introductionmentioning

confidence: 99%