A novel magnetic cooling device for long distance heat transfer

Pattanaik, M.S.; Cheekati, S.K.; Varma, Vijaykumar B.; Ramanujan, R.V.

doi:10.1016/j.applthermaleng.2021.117777

Cited by 13 publications

(3 citation statements)

References 47 publications

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“…The distance between the vertical farm and the data centre greatly influences this figure. If the data centre was built closer to the vertical farm the transferrable energy would likely be greater [167], increasing the possible size of the vertical farm to utilise this extra energy. All the estimates used were conservative in lieu of real-life data.…”

Section: Limitationsmentioning

confidence: 99%

Assessment of the Potential to use the Expelled Heat Energy from a Typical Data Centre in Ireland for Alternative Farming Methods

Borland¹,

Harty²,

McDonnell³

2023

Preprint

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Data centres, though a necessary part of modern society, are being stigmatised for consuming vast amounts of electricity for their operational and cooling needs. Due to Ireland’s reliance on fossil fuels to meet the increased energy demand of data centres, the data centres are contributing significantly to Ireland’s total carbon emissions. As much of this energy is expelled from data centres as waste heat energy, the potential for recycling some of this wasted heat energy was explored using environmentally friendly systems from recent publications. The recovered waste heat energy was applied in a vertical farming system, and the benefits of this waste heat to the vertical farm were analysed and quantified in two scenarios. Using conservative estimates, it was predicted that each vertical farm could be between 5-23% the size of the data centre and produce enough food to feed between 14-61 adults their daily calorie needs, and between 13-58 people their daily fresh produce requirements, depending on the scenario applied. For a more accurate prediction, each vertical farm would have to be assessed on a case-by-case basis. However, there was not enough data available on Irish data centres to perform these calculations.

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Section: Limitationsmentioning

confidence: 99%

Assessment of the Potential to use the Expelled Heat Energy from a Typical Data Centre in Ireland for Alternative Farming Methods

Borland¹,

Harty²,

McDonnell³

2023

Preprint

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“…The primary condition of heat transfer is the temperature of the structures and surroundings must be different (there must be a temperature gradient between these two systems or regions). Some of the applications of heat transfer in the industry are heat exchangers 1 , pulsed spray cooling 2 , magnetic cooling 3 , thermal reservoir 4 , etc. Nanofluid is a colloidal solution that contains one type of particles in nanometer-sized in a based liquid, which is known as nanoparticles.…”

Section: T Time [S] µ Fmentioning

confidence: 99%

Comprehensive examination of radiative electromagnetic flowing of nanofluids with viscous dissipation effect over a vertical accelerated plate

Goud

Reddy

Jamshed

et al. 2022

Sci Rep

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This research aims to establish the MHD radiating convective nanofluid flow properties with the viscous dissipation across an exponentially accelerating vertical plate. As the plate accelerates, its temperature progressively increases. There are two separate types of water-based nanofluids that include copper ($$Cu$$ Cu ) and titanium dioxide ($$Ti{O}_{2}$$ T i O 2 ) nanoparticles, respectively. The most crucial aspect of this investigation is finding a closed-form solution to a nonlinear coupled partial differential equations scheme. Galerkin finite element method (G-FEM) is used to figure out the initial managing equations. Utilizing graphs, the effect of the flow phenomenon's contributing variables as well as the influence of other factors is determined and depicted. In the part dedicated to the findings and discussion, the properties of these emergent parameters are described in more depth. Nonetheless, the thermal radiation and heat sink factors increase the thermal profile. In addition, the greater density of the copper nanoparticles cause the nanoparticle volume fraction to lessen the velocity delineation.

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“…Wu et al [16] used an external magnetic field to induce the sliding movement of ferric oxide nanoparticles in an aqueous lithium bromide solution in order to increase the vapor absorption rate. The experimental findings suggest that employing this strategy increases the vapor absorption rate significantly.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Flow and Thermomagnetic Convection Heat Transfer of a Power Law Non-Newtonian Ferrofluid within a Circular Cavity with a Permanent Magnet

et al. 2022

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The aim of this study is to analyze the thermo-magnetic-gravitational convection of a non-Newtonian power law ferrofluid within a circular cavity. The ferrofluid is exposed to the magnetic field of a permanent magnet. The finite element method is employed to solve the non-dimensional controlling equations. A grid sensitivity analysis and the validation of the used method are conducted. The effect of alterable parameters, including the power law index, 0.7 ≤ n ≤ 1.3, gravitational Rayleigh number, 104 ≤ RaT ≤ 106, magnetic Rayleigh number, 105 ≤ RaM ≤ 108, the location of the hot and cold surfaces, 0 ≤ λ ≤ π/2, and the length of the magnet normalized with respect to the diameter of the cavity, 0.1 ≤ L ≤ 0.65, on the flow and heat transfer characteristics are explored. The results show that the heat transfer rate increases at the end of both arcs compared to the central region because of buoyancy effects, and it is greater close to the hot arc. The location of the arcs does not affect the heat transfer rate considerably. An increase in the magnetic Rayleigh number contributes to stronger circulation of the flow inside and higher heat transfer. When the Kelvin force is the only one imposed on the flow, it enhances the heat transfer for magnets of length 0.2 ≤ L ≤ 0.3.

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A novel magnetic cooling device for long distance heat transfer

Cited by 13 publications

References 47 publications

Assessment of the Potential to use the Expelled Heat Energy from a Typical Data Centre in Ireland for Alternative Farming Methods

Assessment of the Potential to use the Expelled Heat Energy from a Typical Data Centre in Ireland for Alternative Farming Methods

Comprehensive examination of radiative electromagnetic flowing of nanofluids with viscous dissipation effect over a vertical accelerated plate

Numerical Study of the Flow and Thermomagnetic Convection Heat Transfer of a Power Law Non-Newtonian Ferrofluid within a Circular Cavity with a Permanent Magnet

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