Multiphase numerical analysis of heat pipe with different working fluids for solar applications

Aswath, S; Naidu, V H Netaji; Padmanathan, P. K.; Sekhar, Y. Raja

doi:10.1088/1757-899x/263/6/062049

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…A heat pipe is one of the most efficient and passive heat transfer devices that can transport heat from a source (evaporator) to a sink (condenser) over relatively long distances via the latent heat of vaporization of a working fluid. Heat pipes are used in various applications such as solar and waste material energy devices [1][2][3], cooling of electronic devices [4], air conditioning applications for building environmental control [5,6], space and satellite missions [7,8], and thermal management of gas turbine blades [9]. A heat pipe is a closed pipe with a vacuum that consists of three sections, namely, an evaporator, an adiabatic, and a condenser that is partially filled with a working fluid (de-ionized water was used in this study).…”

Section: Introductionmentioning

confidence: 99%

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Study of Heat Pipe Thermal Performance with Internal Modified Geometry

Temimy¹,

Abdulrasool

Hamad

2021

Fluids

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The aim of this study was to investigate the effect of inserting a new internal tube packing (TP) on the thermal performance of a thermosyphon heat pipe (THP). The THP pipe was made from copper with an inner diameter of 17.4 mm and length of 600 mm. The new internal tube packing (TP) had a central copper disc with two copper tubes soldered onto both sides to transport vapor and condensate. The upper tube or riser had an inner diameter of 8.3 mm and was 300 mm long; it was connected to a hole in the disc from the upper side to transport the steam to the condenser section. The lower tube or downcomer had an inner diameter of 5 mm, was 225 mm long and was connected to the lower side of the disc to collect the condensate and transport it to the evaporator. The TP was inserted inside the THP to complete the design of the improved heat pipe (TPTHP). Experimental results showed that the TPTHP reduces the transit time from 16 to 11 min and the thermal resistance by 17–62% based on the input power and depending on the conditions of the THP. The results also showed that the inclination angle and filling ratio have no effect on the thermal resistance of the TPTHP.

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Section: Introductionmentioning

confidence: 99%

“…Aswath et al [2] used a CFD simulation to compare the heat transfer using water and ammonia in vertical evacuated tubes of solar collectors. A copper tube with a 14 mm ID and 1800 mm length (evaporator: 650 mm, condenser: 200 mm) was used and the FR was set to 100%.…”

Section: Introductionmentioning

confidence: 99%

Study of Heat Pipe Thermal Performance with Internal Modified Geometry

Temimy¹,

Abdulrasool

Hamad

2021

Fluids

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Utilizing lattice Boltzmann method for heat transfer analysis in solar thermal systems: A review

Nokhosteen

Sobhansarbandi

2021

Sustainable Energy Technologies and Assessments

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Experimental verification for the phases separation technique to improve the thermal performance of vertical and inclined wickless heat pipe

Temimy¹,

Abdulrasool

2021

IOP Conf. Ser.: Mater. Sci. Eng.

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A flow separation technique is tested experimentally for the thermal performance enhancement of the Thermosyphon Heat Pipe (THP). Flow separation for the vapor rising upward and the condensate flowing downward is used to eliminate the complex interactions between the two phases. Such interactions are found and discussed by previous numerical work published by the authors. Tubes Packing (TP) made of two parallel copper tubes welded contrary to each other with a neighboring openings at central disk are used to grantee the smooth flow through the THP. The THP is made with a suitable dimension for the evaporator, adiabatic and condensation sections. Different operating conditions of filling ratios, supplied heat and inclination angles are tested to monitor the THP thermal performance during transient and steady state operation. The experimental tests results showed that the insertion of TP into the THP enhanced the thermal performance of THP by reducing the transient operation time about 37% and the maximum averaged temperature in the evaporator section about 50%. Also, reduces the variation effects of the filling ratio and the inclination angle on the thermal performance. In general, the results showed that the insertion of the TP reduces the THP thermal resistance about 17% to 62% based on the operating conditions.

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Multiphase numerical analysis of heat pipe with different working fluids for solar applications

Cited by 4 publications

References 6 publications

Study of Heat Pipe Thermal Performance with Internal Modified Geometry

Study of Heat Pipe Thermal Performance with Internal Modified Geometry

Utilizing lattice Boltzmann method for heat transfer analysis in solar thermal systems: A review

Experimental verification for the phases separation technique to improve the thermal performance of vertical and inclined wickless heat pipe

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