An experimental study of using water, methanol, and binary fluids in oscillating heat pipe heat exchanger

Barrak, Anwar S.; Saleh, Ahmed A. M.; Naji, Zainab H.

doi:10.1016/j.jestch.2019.05.010

Cited by 18 publications

(9 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Air handling processes of the AHU with and without HPHE in the psychrometric plot are shown in Figure 26. The sensible energy effectiveness for the HPHE (calculated by Formula (1) [101]) and for the CC (calculated by Formula (2) [102]) was usually used to evaluate the energy savings and the enhancement of dehumidification of the ACS integrated with HP. Different from the air handling In the past years, many researchers have attempted to dehumidify the supply air of the ACS through installing an HPHE around the CC.…”

Section: Dehumidification Based On the Hphementioning

confidence: 99%

The Review of the Application of the Heat Pipe on Enhancing Performance of the Air-Conditioning System in Buildings

Yuan,

Liu,

Zhang

et al. 2023

Processes

View full text Add to dashboard Cite

An air-conditioning system (ACS), which consumes large amounts of high-grade energy, is essential for maintaining the indoor thermal environment of modern buildings. However, an ACS consumes almost half of the total energy of the building. Therefore, it is necessary to reduce the energy consumption of the ACS to promote energy conservation and emission reduction in the building sector. In fact, there is an abundance of waste heat and low-grade energies with the potential to be utilized in ACS in nature, but many of them are not utilized efficiently or cannot be utilized at all due to the low efficiency of thermal energy conversion. Known as a passive thermal transfer device, the application of a heat pipe (HP) in the ACS has shown explosive growth in recent years. HPs have been demonstrated to be an effective method for reducing building cooling and heating demands and energy consumption in ACS with experimental and simulation methods. This paper summarizes the different HP types applied in the ACS and provides brief insight into the performance enhancement of the ACS integrated with HP. Four types of HPs, namely tubular HP (THP), loop HP (LHP), pulsating HP (PHP) and flat HP (FHP), are presented. Their working principles and scope of applications are reviewed. Then, HPs used in natural cooling system, split air conditioner (SAC), centralized ACS (CACS) and cooling terminal devices are comprehensively reviewed. Finally, the heat transfer characteristics and energy savings of the above systems are critically analyzed. The results show that the performance of the HP is greatly affected by its own structure, working fluid and external environmental conditions. The energy saving of ACS coupled with HP is 3–40.9%. The payback period of this system ranges from 1.9–10 years. It demonstrates that the HP plays a significant role in reducing ACS energy consumption and improving indoor thermal comfort.

show abstract

Section: Dehumidification Based On the Hphementioning

confidence: 99%

The Review of the Application of the Heat Pipe on Enhancing Performance of the Air-Conditioning System in Buildings

Yuan,

Liu,

Zhang

et al. 2023

Processes

View full text Add to dashboard Cite

show abstract

“…The convective heat transfer can be enhanced by improving the thermal conductivity of the fluid. Nanofluids and binary fluids are proposed to improve the process of heat transfer performance of the working fluid [27,28].…”

Section: Pulsating Heat Pipe (Php)mentioning

confidence: 99%

An Effect of Binary Fluid on the Thermal Performance of Pulsation Heat Pipe

Barrak¹,

Ali

2022

International Journal of Applied Mechanics and Engineering

Self Cite

View full text Add to dashboard Cite

A pulsation heat pipe is an efficient heat pipe used in many engineering applications. This study aims to test the effect of working fluids on the thermal performance of pulsation heat pipe. Seven turned pulsation heat pipes were designed and manufactured from a copper pipe with a 3.5 mm inner diameter. The lengths of an evaporation part, an adiabatic passage, and a condenser part were 300 mm, 210 mm, and 300 mm, respectively. In this study, three different fluids were used as the working fluid: distilled water, methanol, and binary fluid (a mixture of water and methanol) with a 50% filling ratio. Compared to water, the experimental results suggested that methanol had a better thermal performance when used as a working fluid in the PHP. On the other hand, a binary fluid enhanced the lower thermal performance of water (29% reduction in the thermal resistance and a 20% increase in the effective thermal conductivity of the PHP).

show abstract

“…Figure 3 is the experimental setup for AGPHP heat recovery. The use of PHP heat exchangers in air conditioning systems can reduce energy consumption to 14% [57]. Liu et al [58] applied anti-gravity PHP to waste heat recovery.…”

Section: Energy Saving With Excellent Heat Transfer Performancementioning

confidence: 99%

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Xin

Zhu

2022

Energies

View full text Add to dashboard Cite

The application of batteries has become more and more extensive, and the heat dissipation problem cannot be ignored. Oscillating Heat Pipe (OHP) is a good means of heat dissipation. In this paper, the methods to improve the energy conversion and flow thermal performance of micro-channel OHP are studied and summarized. The working principle, heat transfer mechanism, advantages and applications of PHP are also introduced in detail in this study. Proper adjustment of the micro-channel layout can increase the heat transfer limit of PHP by 44%. The thermal resistance of two-diameter channel PHP is 45% lower than that of conventional PHP. The thermal resistance of PHP under uneven heating can be reduced to 50% of the original. PHP pulse heating can alleviate the phenomenon of dryness. Different working fluids have different effects on PHP. The use of graphene nano-fluids as the work medium can reduce the thermal resistance of PHP by 83.6%. The work medium obtained by the mixture of different fluids has the potential to compensate for the defects while inheriting the advantages of a single fluid.

show abstract

An experimental study of using water, methanol, and binary fluids in oscillating heat pipe heat exchanger

Cited by 18 publications

References 15 publications

The Review of the Application of the Heat Pipe on Enhancing Performance of the Air-Conditioning System in Buildings

The Review of the Application of the Heat Pipe on Enhancing Performance of the Air-Conditioning System in Buildings

An Effect of Binary Fluid on the Thermal Performance of Pulsation Heat Pipe

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Contact Info

Product

Resources

About