Acetone Heat Pipe, Acetone heat pipes have emerged as an eff

Acetone Heat Pipe, Acetone heat pipes have emerged as an effective method for managing high heat fluxes in processors due to their excellent thermal conductivity, low boiling point, and efficient phase-change properties. NCG generation is a common indicator of heat pipe failure, causing either local hot spots or gas accumulation in the condenser sec-tion of To validate proposed axially grooved heat pipe, designed to work with acetone, comparative characterization tests have been conducted for two heat pipes, having the same profile height of 19. Learn how acetone impacts performance in cooling systems. Will a heat gun loosen PVC glue? Heat the PVC Pipe So, by applying heat to the pipe with a heat gun, you may be able to soften the joint enough to separate the pipes. These four OHPs consist of an open loop water OHP, an open loop acetone OHP, a closed loop water OHP, and a closed loop acetone OHP. To provide long term tests at elevated temperature, thermostats on gas controlled HPs were developed ensuring that the required temperature was kept during the tests. Using ethanol or acetone as the working fluid, the performance of starting up and heat transfer of closed-loop plate oscillating heat pipe with parallel channels (POHP-PC) were experimentally investigated by varying filling ratio, inclination, working fluids and heating power. ACT manufactures a large variety of heat pipes, heat pipe heat sinks, and heat pipe assemblies for a wide range of applications in a variety of markets. The heat pipe was manufactured from copper with length and diameter of Featured ApplicationA theoretical model for photovoltaic panel with heat pipe thermosiphon to dissipate the heat produced in the panel will be useful for designers to obtain accurate insight into its cooling performance under different configurations and external conditions. This paper mainly studies the application of mixtures of ethanol and acetone in a pulsating heat pipe. Congatec, a manufacturer that specializes in embedded and edge computing designs, unveiled a new acetone-based heat pipe cooling solution at Embedded World 2025. Essential data for engineers, architects, and designers working with heat transfer and insulation. Maximum heat transport capability of Acetone increases with increase in inner diameter of pipe(ID) also increases with increase in operating temperature (OT), at 60% filling ratio results in maximum heat transport capability. The acetone-based heat pipe cooling system works in extreme conditions, preventing freezing, shock, and vibration. Heat pipes are components that can transfer heat via an evaporation and condensation circuit. In this work, an acetone-charged LHP with a nickel wick is developed and experimentally studied, mainly focusing on its startup and heat transport Abstract For the high efficiency of the practice of the concentrator photovoltaic, an innovative acetone and aluminum flat-plat heat pipe is designed and manufactured. Be careful not to soak the area. Abstract Thermal conductivity and transition are the two stages of a closed loop pulsating heat pipe's operation. The volume A visual and thermal experimental investigation of four oscillating heat pipes (OHPs) was conducted to observe fluid flow of liquid plugs and vapor bubbles in the OHP and its effect on the temperature distribution and heat transfer performance in an OHP. The performance of the tested pulsating heat pipe was mainly evaluated by thermal resistance and wall temperature To validate proposed axially grooved heat pipe, designed to work with acetone, comparative characterization tests have been conducted for two heat pipes, having the same profile height of 19. is the trusted expert in heat pipe products and technologies. Then dab at the spot. The working fluid was pure To validate proposed axially grooved heat pipe, designed to work with acetone, comparative characterization tests have been conducted for two heat pipes, having the same profile height of 19. *Test Methodology Heater: Copper dummy heater , heat source area = 15x W mm Condenser: Copper fin with fan , cooling length = 60~80mm Theater (°C): Heater temperature, sensor is embedded between Heater and evaporator section of heat pipe. Unlike conventional heat pipes with a wick structure, a PHP comprises wickless capillary meandering tubes that form closed or open loops between the evaporator and the condenser [14,15]. The acetone-based heat pipe cooling solution is particularly effective when paired with congatec’s COM Express Type 6 conga-TC675 or its ruggedized counterpart conga-TC675r. congatec launches an innovative acetone-based heat pipe cooling solution for extreme environments, ensuring reliable performance in temperatures ranging from -40°C to +85°C. SEE NOW. 1 mm, and length of 730 mm. To elevate the combined thermoelectric performance of MHP-PV/T through heat transfer enhancement ulteriorly, it is of great necessity to research the impacts of working fluids on the performance of MHP-PV/T systems. In this paper, the attempt will be to discuss the properties of closed loop pulsating heat pipes (CLPHP), a novel member of the closed passive two-phase heat transfer system family. Oscillating heat pipes (OHPs) are applicable in different energy systems such as solar collectors, desalinations and fuel cells as thermal mediums or thermal management devices. For example, Khandekar et al. May 9, 2025 · Acetone heat pipes have emerged as an effective method for managing high heat fluxes in processors due to their excellent thermal conductivity, low boiling point, and efficient phase-change properties. Thp1 (°C): Evaporator temperature of heat pipe, measurement on heat pipe top side. The rate of NCG generation substantially decreased after conducting the NCG exhausting process, proving the compatibility of acetone with the aluminum FPHPs. These Functional acceleration and storage life test results of 70 low temperature aluminum Heat Pipes (HP) with acetone are presented. First heat pipe is charged with acetone and has unique core however the second heat pipe, charged with ammonia, has two cores. By calculating effective thermal conductivity values from the temperature profiles, we can compare the heat pipe's performance using acetone and water as the working fluid. It was invented to meet the requirement for smaller heat transfer devices. Jan 1, 2024 · It has been proven that, under radial rotation conditions, pulsating heat pipes (PHPs) can operate with good thermal performance. Copper has been selec Heat transfer performance of polytetrafluoroethylene oscillating heat pipe with water, ethanol, and acetone as working fluids Tingting Hao a b , Hongbin Ma a, Xuehu Ma b Show more Add to Mendeley However, heat pipes shall soon probably be improved or replaced by much higher heat transport capacity devices. Approximately 20% of each pipe was filled with either water or acetone. An experimental study was conducted to investigate the start-up and heat-transfer performance of a closed-loop pulsating heat pipe with water−acetone … A visual and thermal experimental investigation of four oscillating heat pipes (OHPs) was conducted to observe fluid flow of liquid plugs and vapor bubbles in the OHP and its effect on the temperature distribution and heat transfer performance in an The heat transfer rate of the heat pipe is controlled by the unceasing evaporation and condensation of the working fluids leading to a higher heat transfer rate ranging between 2. Pure n-pentane, acetone and methanol were also tested as the carrying fluid to produce some reference data. These The novelty of this study lies in applying a multiple pulsating heat pipe heat exchanger (PHPHE) with pure water, methanol, and acetone as the working fluid for air-conditioning systems, which were utilized at three different fill ratios of 50%, 60%, and 70%. The Loop Heat Pipes (LHP), which was previously developed for spacecraft thermal control system (Maydanik, 2005), are a reliable alternative and can also transport heat with high performance for terrestrial electronic cooling application. Thermal resistance of OHPs is affected by different elements including the architecture of OHP, filling ratio, heat load and operating fluid. The oscillatory motion of the liquid slug and vapor plug is used as the mechanism for transferring heat. In order to push forward the commercial applications of loop heat pipe (LHP) especially in an environment where people are present, it is of great importance to explore alternative working fluids to substitute the commonly used anhydrous ammonia. In this work, an acetone-charged LHP with a nickel wick is developed and experimentally studied, mainly focusing on its startup and heat transport Abstract g heat pipe is a type of small heat transfer device with a very high thermal conductivity. A visual and thermal experimental investigation of four oscillating heat pipes (OHPs) was conducted to observe fluid flow of liquid plugs and vapor bubbles in the OHP and its effect on the temperature distribution and heat transfer performance in an OHP. Request PDF | On Jan 1, 2024, Ning Qian and others published Pulsating heat pipes filled with acetone and water under radial rotation conditions: Heat transfer performance and semi-empirical Discover the efficiency of a copper miniature loop heat pipe (LHP) with acetone as a working fluid. Depending on the operating temperature range, appropriate working fluid is This is a repository copy of Experimental study on an acetone-charged loop heat pipe with a nickel wick. When an incompatible working fluid is used, noncondensable gas (NCG) is generated or corrosion occurs. When heat is applied to one end of the heat pipe, a working fluid evaporates and flows along the adiabatic zone to the condenser, driven by the temperature or pressure gradient. Loop Heat Pipe (LHP) is a passive phase-change heat transfer device. A heat source was then applied to force the fluids to vaporize and expel the air from the pipe. 16°C/W. [7] investigated the effect of the heat pipe diameter on the heat transfer performance of a closed loop pulsating heat pipe (CLPHP). acetone as latent heat transfer fluids for solar collector heat pipe applications. Pulsating heat pipes (PHPs) are used as high efficiency heat exchangers, and the selection of working fluids in PHPs has a great impact on the heat transfer performance. Download scientific diagram | Acetone Heat Pipe performance curve from publication: Experimental performance comparison of axially grooved heat pipes charged with acetone and ammonia | To validate In order to push forward the commercial applications of loop heat pipe (LHP) especially in an environment where people are present, it is of great importance to explore alternative working fluids to substitute the commonly used anhydrous ammonia. A device called a closed loop pulsating heat pipe transfers heat at various heat Download Citation | Heat transfer performance of a pulsating heat pipe charged with acetone-based mixtures | Pulsating heat pipes (PHPs) are used as high efficiency heat exchangers, and the Copper heat pipe thermosiphon with acetone as a working fluid was used. Also covers machined & U-shaped vapor chambers. However, the thermal The new-developed micro heat pipe PV/T (MHP-PV/T) has excellent potential for combined heat and power generation in cold regions. However, the thermal Explore the principles, types, applications, benefits, and limitations of heat pipes, an efficient tool for thermal management. Water Vs Acetone: Testing Working Fluid Options The information presented below was collected to compare the performance of water vs. The heat transfer performance of a PHP is mainly deter-mined by several factors, such as the pipe diameter, cross-sectional shape, setting angle, filling ratio and the physical properties of working fluids. In the study, the effects of some important parameters (filling ratio, mixing proportion, heating power input, and inclined angle) on the thermal performance of PHP were experimentally investigated. Download Citation | Experimental study on thermal performance of pulsating heat pipe with ethanol-acetone mixtures | This paper presents experimental results on thermal performance of closed loop A visual and thermal experimental investigation of four oscillating heat pipes (OHPs) was conducted to observe fluid flow of liquid plugs and vapor bubbles in the OHP and its effect on the . Explore its performance under various conditions, achieving a minimum thermal resistance of 0. Experimental study on a large scale pulsating heat pipe operating at high heat loads, different adiabatic lengths and various filling ratios of acetone, ethanol, and water The study of the performance of the acetone and aluminum flat plate heat pipe September 2013 Conference: International Conference on Advance Research in Mechanical, Aeronautical And Civil Authors: As a working fluid, acetone was first used in a loop heat pipe with a cylindrical evaporator 30 mm in diameter made of steel and equipped with a fine-pored nickel wick [7]. A pulsating heat pipe (PHP, also known as an oscillating heat pipe) is a powerful thermal device with a high heat transfer performance [12,13]. Article on Acetone and methanol heat pipes for frigid terrestrial conditions and outer space. congatec's acetone-based heat pipe cooling solution enables embedded systems to work reliably at extreme sub-zero temperatures down to -40°C. Acetone Heat Pipes for CPU Cooling: Efficient Thermal Management Solution. The new cooling solution uses acetone as a working fluid in the heat pipes instead of water. Neutron radiography allowed visualization of hydrogen rich liquid water and acetone within the copper OHP. Based on studies and test data and using the Arrhenius equation, the time was determined for which This study investigates the compatibility of aluminum flat-plate heat pipes (FPHPs) used for filling acetone as a working fluid after long-term operation of and the non-condensable gas (NCG) exhausting process. What loosens PVC glue? Use a soft, clean cloth dampened with an acetone-based nail polish remover. The performance of heat pipes is primarily affected by the capillary structure, working fluid, and compatibility between the working fluid and container. Apr 17, 2025 · Discover the differences between acetone heat pipes and conventional heat pipes. The theoretical study involved a heat balance analysis of the panel with cylindrical heat pipe with surface contact with the Request PDF | On Nov 1, 2025, Rui Li and others published An in-depth study on the annual performance of acetone and R141b micro heat pipe PV/T systems | Find, read and cite all the research you Abstract Pulsating Heat Pipe (PHP) is a contemporary and advanced method of thermal management. Heat Pipe Learning Center Advanced Cooling Technologies, Inc. This study investigates the thermal resistance characteristics of the PHP charged with acetone-based binary mixtures, where deionized water, methanol and ethanol were added to and mixed with acetone, respectively. This study investigates the compatibility of aluminum flat-plate heat pipes (FPHPs) used for filling acetone as a working fluid after long-term operation of and the non-condensable gas (NCG) exhausting process. The objective of this experiment is to observe the performance of open loop pulsating heat pipe using two fluids at different filling ratios. Thermal conductivity of various common materials, including metals, gases, and building materials. This prevents the thermal transfer medium from freezing at extreme sub-zero temperatures and prevents damage to the cooling solution, the module, and the entire system design. In the present study, a set of experiments were accomplished to appraise the thermal performance and heat transfer of n-pentane-acetone and n-pentane-methanol mixtures inside a gravity-assisted thermosyphon heat pipe. After obtaining the appropriate heat flux, the water-to-water heat pipe heat was designed, erected and tested under high temperature (32oC to 70oC) operating conditions, using ethanol, acetone and Abstract Identical oscillating heat pipes (OHP) charged separately with water and acetone were observed thermally and visually at varying condenser temperatures and heat inputs. The objective of this work is to tudy thermal performance of closed loop pulsating heat pipe with acetone as working fluid. Pulsating heat pipe (PHP) is a new innovation in the modern era of miniaturizes thermal management system for its higher heating and cooling capacity. It uses the latent heat of phase-change (evaporation and condensation) of the working fluid to transfer the thermal loads from the evaporator to the condenser and capillary force to complete the flow circulation in the loop. Ideal for applications in automotive, rail, and aerospace industries. PHPs have excellent potential for application in rotary machinery, owing to their enhanced heat transfer and material duration. The temperature distribution in the micro heat pipes is obtained by solving the numerical model with a finite difference approach. 5 and 100 kW/m 2 K. heqv6, wjcd, tmqom, jxfn, qdi2v, rot8, bzbtf, dfbw, vnpyh, odgzyd,