Prevention of icing with ground source heat pipe: A theoretical analysis for Turkey's climatic conditions

Özsoy, Ahmet; Yildirim, Ragıp

doi:10.1016/j.coldregions.2016.02.003

Cited by 24 publications

(6 citation statements)

References 10 publications

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“…To get more accurate results the temperature of the evaporator, adiabatic, and condenser regions are taken as average values among the readings of thermocouples, as shown in mathematical relations below [17].…”

Section: Data Reductionmentioning

confidence: 99%

Experimental Study of the Wickless Heat Pipe Heat Exchanger by Using Nano Fluid

Osamah Raad Skheel,

Nabil J. Yasin,

Audai Hussain Al-abbas

et al. 2023

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The use of wickless heat pipe heat exchangers has been improving a wide range of thermal applications such as solar water heaters. Therefore, more scientific research needs to be conducted to improve its performance. In the present study, a wickless heat pipe heat exchanger test rig has been designed and fabricated to investigate the effect of different parameters on its performance. Two different heat pipe working fluids have been used namely pure water and water with nanoparticles (Al2O3) using different fluid volume ratios (20%,40%,60%,80%, and 100%). The concentrations of the nanoparticles in water range between 1.3 and 7 % wt. For the heat exchanger, various inlet hot air temperatures (50, 55, and 60 oC) have been tested at the hot side (heat pipe evaporator) whereas the inlet temperature of the cold side (heat pipe condenser) has been maintained at 20 oC. The effect of airflow Reynolds number has also been examined with a range of 2583-20664. Results showed that the best heat exchanger effectiveness is achieved at a Reynolds number of 10332 and nanoparticles concentration of 7% wt. Also, the use of nanoparticles reduced the thermal resistance in the heat pipe due to the significant reduction in its surface temperature compared to that of pure water.

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Section: Data Reductionmentioning

confidence: 99%

Experimental Study of the Wickless Heat Pipe Heat Exchanger by Using Nano Fluid

Osamah Raad Skheel,

Nabil J. Yasin,

Audai Hussain Al-abbas

et al. 2023

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“…In addition, the method has a limited effect when applied to bridge tower crossbeams. The geothermal method [10][11][12][13] involves the installation of heat transfer tubes inside the road concrete, using liquid as the circulating medium, to transfer heat energy from the ground to the road surface for de-icing [14,15]. However, the equipment and methods used to exploit geothermal energy are complex; furthermore, the bridge tower beams are high, and the heat loss from the heat transfer pipes leads to a significant compromise in ice melting [16].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Ice Melting of Bridge Tower Crossbeams under Different Conditions

Zhi

Mao

et al. 2023

Applied Sciences

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The bridge tower beams of long-span bridges freeze during winter. The accumulated ice on the beam flakes off and falls into the bridge deck from a high altitude with temperature rise, threatening traffic safety. To solve this problem, an electric heating method is used to melt the snow and ice on bridge tower beams. A design scheme based on embedding carbon fiber heating wires in a bridge tower beam is proposed in which electrical energy is converted into heat energy to melt the snow and ice on the beam. In this paper, a beam icing test and beam de-icing test are carried out through a laboratory model test. The model test results show that under the conditions of a wind speed of 4.5 m/s and an ambient temperature of −15 °C, the average internal temperature of the beam after heating stabilization is 1.37 °C; this is higher than the average critical temperature of 1.31 °C. This temperature is sufficient to melt the ice and proves the practicability of this method. The de-icing method of embedded carbon fiber heating is simple, efficient, and environmentally friendly. This can provide a reliable reference for the practical application of de-icing a bridge beam.

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“…Some researchers have proposed geothermal methods, conductive concrete methods, and electric heating methods to melt snow and ice on the road. Geothermal methods are to embed or attach pipes on the road and use gas or liquid as a circulating medium to transfer geothermal energy from the ground to the road for snow and ice melting [3][4][5][6][7][8]. However, the construction and installation of geothermal energy mining equipment is very complex, and due to the limitation of geothermal conditions, it is possible to exploit geothermal energy in the plateau area 100 m deep underground [9].…”

Section: Introductionmentioning

confidence: 99%

The Icing Distribution Characteristics Research of Tower Cross Beam of Long-Span Bridge by Numerical Simulation

et al. 2021

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The cross beam of a long-span bridge will freeze in low temperature. When the temperature rises, the ice on the cross beam will thaw and fall off. If the ice is too heavy, it may cause vehicle damage and casualty. In order to reduce the risk of falling ice, a scale model of the cross beam was taken as an example, and a kind of numerical simulation method is presented to study the icing distribution characteristics on surface of the cross beam. This paper simulates the ice accretions process of the cross beam by Fluent module and FENSAP-ICE module of ANSYS and investigates the influence of wind and temperature in the process. This is a new numerical simulation method for studying ice accretions of buildings. The results indicate that water freezes mainly on the windward surface, and the thicker ice is near the top and bottom edge of windward surface. According to the results of numerical simulation, a measure of ice melting based on electric heating method is proposed in this paper, and the feasibility and effectiveness of this method are verified by numerical simulation. The results show that the icing distribution characteristics are accord with the fact and the ice-melting measure is feasible and effective.

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Prevention of icing with ground source heat pipe: A theoretical analysis for Turkey's climatic conditions

Cited by 24 publications

References 10 publications

Experimental Study of the Wickless Heat Pipe Heat Exchanger by Using Nano Fluid

Experimental Study of the Wickless Heat Pipe Heat Exchanger by Using Nano Fluid

Experimental Study on Ice Melting of Bridge Tower Crossbeams under Different Conditions

The Icing Distribution Characteristics Research of Tower Cross Beam of Long-Span Bridge by Numerical Simulation

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