Pdf heat transfer of nanofluid in a double pipe heat exchanger. The plate heat exchanger is a tool that transport thermal energy by two or many fluids by the convection property of fluids. Department of mechanical engineering, college of engineering, thiqar university, nasiriyah, iraq. The nanoparticles used in nanofluids are typically made of metals, oxides, carbides, or carbon nanotubes. Enhancement of heat transfer rate using mgo nanofluid in heat. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more. These fluids are engineered colloidal suspensions of nanoparticles in a base fluid. The device under consideration is the kind of immersed coil heat exchangers. However, the term is commonly used to equipment in which two process streams exchange heat with each other.
Introduction a heat exchanger is the equipment built to efficiently transfer heat from one medium to. Assessment of thermoelectric module with nanofluid heat. Introduction heat exchangers play an increasingly important role in the field of energy conservation. Pdf cfd analysis of heat transfer and fluid flow in. The system under consideration uses commercially available thermoelectric. Effectiveness and overall heat transfer coefficient o water.
Compact heat exchanger the ratio of the heat transfer surface area of a heat exchanger to its volume is called the area density a heat exchanger with. Heat transfer enhancement of cuo water nanofluid in a. The paper presents the preliminary design of the special heat exchanger. Pdf application of nanofluid in heat exchangers for energy. In this paper, an appraisal of thermal augmentation of thermoelectric module using nanofluidbased heat exchanger is presented. The improvement in overall heat transfer coefficient, nanofluid heat transfer coefficient and efficiency of plate heat exchanger obtained from the simulations were 23%, 30% and 12%, respectively. Comparison of the heat transfer efficiency of nanofluids aidic. Tube side pr number of heat exchanger using nanofluid was decreased by 11% compared to that of basefluid. Full text of heat exchanger thermal design of oil system for. Full text of effect of mgo nanofluid on heat transfer. The results indicate that the convective heat transfer coefficient of the nanofluid is higher than the. Khairul presentedthe thermodynamic second law analysis of a helical coil heat exchanger using three different types of nanofluids e. Keywordsnanofluid, mechanical vibration, heat transfer augmentation, gasketed plate heat exchanger. These heat exchanger uses at many applications like power plants, air conditioning.
This article reports an experimental study on the forced convective heat transfer and flow characteristics of a nanofluid consisting of water and different volume concentrations of al 2 o 3 nanofluid 0. Effect of nanofluids on liquidsolid heat transfer on high. The configuration of the heat exchanger was a double pipe. In case of both the heat exchanger as the concentration of nanoparticle in water increases it increases the heat transfer coefficient of the nanofluid. Flow and heat transfer of a nanofluid over a shrinking sheet. Pdf heat transfer enhancement with al2o3 nanofluid in shell. Shell and tube heat exchanger, nanofluid, heat transfer, performance i. The test rig provided conditions to measure the convective heat transfer coefficient, pressure drop and friction factor of the system. Nov 23, 2017 so, the goal of this research was to introduce nanofluid technology for thermal processing of food products, increasing heat transfer efficiency in shell and tube exchangers by nanofluids and frugality in energy consumption for pasteurization, reducing thermal processing duration and better quality retention of food products. Heat transfer enhancement of cuowater nanofluid in a double tube heat exchanger ali kia 1, mohsen ekhlasnia 1,ahmad zolfaghari 2, 1hakhamanesh moghadam,sadeg afrasiabi 1,reza aghayari 3. Muhammed and bjorn palm, thermal performance of screen mesh heat pipe. In this study, the energy differences between heat loss by nanofluid and heat gain by cooling water is maximum 3% which mainly due to heat loss through the wall of geyser, inlet tubing to heat exchanger.
The apparatus consists of a test section heat exchanger, two tanks, two magnetic gear pumps, and a pump for transporting nanofluid as the hot fluid and the other for the cold water. Heat transfer of nanofluid in a double pipe heat exchanger. The relation for heat capacity for nanofluid was proposed by xuan and roetzel 11 and the values were calculated by using this equation. Application of nanofluids in heat transfer intechopen. We believe that the present design approach is a useful for compression oil system cooling design. Heat transfer through heat exchanger using al2o3 nanofluid at. Amongst the three nanofluids, cuowater nanofluid, the heat transfer enhancement and reduction of entropy generation rate were obtained about 7. The configuration of the heat exchanger was a double pipe and carbonwater nanofluid was utilised as a heatexchanging medium within the heat exchanger. In the plate heat exchanger the heat transfer coefficient of nanofluid at mm cold hot 10gs is about 20% higher than the base fluid and under the same conditions in the concentric heat exchanger is 14% higher than the base fluid. Nanofluids are a new class of advanced heattransfer fluids engineered by dispersing nanoparticles smaller than 100 nm in diameter in conventional heat transfer fluids. Heat transfer enhancement in fe3o4water nanofluid through a.
In the present work heat transfer experiments were carried out on a number of nanofluids. The need for better efficient heat exchanging system is required for new technological and industrial development. Common base fluids include water, ethylene glycol and oil. Heat transfer enhancement of cuowater nanofluid in a double tube heat exchanger ali kia 1, mohsen ekhlasnia 1,ahmad zolfaghari 2, 1hakhamanesh moghadam,sadeg afrasiabi 1,reza aghayari 3, mahshid pourali 4 and heydar maddah 5. The heat transfer values were measured in the turbulent flow of a nanofluid containing 20 nm aluminum oxide suspended particles with the volume. Mass flow rate on tube side was varied while on the shell side it was kept. The term heat exchanger applies to all equipment used to transfer heat between. This study investigates experimentally the thermal performance of propylene glycolwater with a concentration of 1090 % and al2o3water nanofluid with a volume concentration of 0. Research article heat transfer of nanofluid in a double pipe heat exchanger rezaaghayari, 1 heydarmaddah, 2 malihezarei, 1 mehdidehghani, 3 andsaharghanbarikaskarimahalle 4 department of. Heat transfer performance of a gasketed plate heat. Experimental and simulation results showed that the thermal performance of nanofluids is higher than that of the base fluid and the heat transfer enhancement. Heat transfer and pressure drop characteristics of mgo. A heat exchanger is a device that is used to transfer thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a.
The present work aims to investigate the plausible application of mgoethylene glycol as a heat transfer fluid in a doublepipe heat exchanger. The test section is a counter current double pipe heat exchanger with the length of 120 cm. It is an ideal and unique reference source for scientists and engineers working in this important and emerging research field of science, engineering and technology. A numerical study is conducted to examine natural convection heat transfer in a two dimensional heat exchanger filled with nanofluids. Investigation of a counter flow microchannel heat exchanger. These heat exchanger uses at many applications like power plants, air conditioning, chemical process etc, gives higher thermal efficiency in the system. The heat transfer enhancement of tio2 nanofluid was considerably improved at higher working temperature and high concentration because of the improvement of thermal properties. Engineering nanofluids for heat transfer applications. The scope design the test loop cross flow heat exchanger to obtain the flow.
Analysis of heat transfer enhancement of heat exchanger using. In this study, the energy differences between heat loss by nanofluid and heat gain by cooling water is maximum 3% which mainly due to heat loss through the wall of geyser, inlet tubing to heat exchanger, outlet tubing from heat exchanger, radiation heat loss and heat loss through the nanofluid reservoir. Enhancement of heat transfer rate using mgo nanofluid in. Kuznetsov, the chengminkowycz problem for the doublediffusive natural convective boundary layer flow in a porous medium saturated by a nanofluid, int. Heat exchanger specification, nanofluid properties and mathematical formulations were taken from the literature to analyze thermal and energy performance of the heat recovery system. A nanofluid is prepared by dispersing particles of. Research article heat transfer of nanofluid in a double pipe heat exchanger rezaaghayari, 1 heydarmaddah, 2 malihezarei, 1 mehdidehghani, 3 andsaharghanbarikaskarimahalle 4 department of chemical engineering, shahrood branch, islamic azad university, shahrood, iran department of chemistry, sciences faculty, arak branch, islamic azad. So, the goal of this research was to introduce nanofluid technology for thermal processing of food products, increasing heat transfer efficiency in shell and tube exchangers by nanofluids and. The term heat exchanger applies to all equipment used to transfer heat between two streams. This study analyzes the characteristics of alumina al2 o3 water nanofluid to determine the feasibility of its application in an aircooled heat exchanger for heat dissipation for pemfc or electronic chip cooling. Ahuja 5,6 has performed experiments on the heat transfer enhancement in the laminar flow of water with microsized polystyrene suspension. Thermal performance of shell and tube heat exchanger using pg.
This study aims to enhance the heat transfer characteristics for heat exchanger with use of nanofluid as a working substance. A schematic of the experimental setup used to investigate heat transfer characteristics of nanofluid in a mini heat exchanger is shown in fig. Late heat exchangers phes are broadly used in numerous engineering. Heat transfer enhancement in shell and tube heat exchanger. This study investigated the heat transfer enhancement of the nanofluid containing aluminum oxide nanoparticles and water under the condition of turbulent flow in a double pipe heat exchanger. Hemmat esfe and saedodin 5 estimated convective heat transfer coefficient of mgowater nanofluid flow in a. Hemmat esfe and saedodin 5 estimated convective heat transfer coefficient of mgowater nanofluid flow in a double pipe heat exchanger at different particle concentrations 0. Heat transfer enhancement of cuo water nanofluid in a double. Investigation of a counter flow microchannel heat exchanger performance with using nanofluid as a coolant. Toprak, experimental study of nanofluid effect on thermal performance of screen mesh heat pipe, proceedings of the uk heat transfer conference ukhtc20, 20, 981 988 5. Pdf heat transfer augmentation in heat exchanger using. The nanofluid is a colloidal solidliquid mixture obtained by the dispersing nanoparticles with a high heat transfer coefficient in the base fluid. Chevrontype, exergy loss, heat transfer coefficient, nanofluids, plate heat.
Designing and application of a shell and tube heat exchanger. Due to the limitation of fossil fuels, shortage of energy, optimization of energy consumption in various industrial processes becomes very important and challenging issue all over the world. Heat transfer enhancement with al2o3 nanofluid in shell and. Pdf heat transfer of nanofluid in a double pipe heat. In the plate heat exchanger the heat transfer coefficient of nanofluid at mm cold hot 10gs is about 20% higher than the base. Rayleigh number, temperature of the nanofluid, diameter and type of the nanoparticles on the heat transfer performance of nanofluids are examined.
A reduction in energy consumption is possible by enhancing. A nanofluid is a fluid containing nanometer sized particles, called nanoparticles. Evaluation of heat transfer mechanisms in heat pipe charged with. It was observed that the convective and overall heat transfer coefficient increased with the application of nanofluids compared to ethylene glycol or water based. Engineering nanofluids for heat transfer applications diva. Heat transfer enhancement with al 2 o 3 nanofluid in shell and tube heat exchanger using twisted tapes. Experimental investigation of plate heat exchanger using. Heat transfer of nanofluid in a double pipe heat exchanger article pdf available in international scholarly research notices 2014 november 2014 with 1,199 reads how we measure reads. The scope design the test loop cross flow heat exchanger to obtain the flow and heat transfer characteristics, manufacture conformal test section from pyrex with low integral. Coil heat exchanger with the nanofluid filled buffer layer. By the above stated results the following conclusions are made. The hotwire apparatus is used to measure the thermal conductivity of nanofluids with suspended copper nanophase powders. Application of nanofluids in heat transfer 415 where eff is the effective viscosity of nanofluid, bf is the base fluid viscosity, and is the volume fraction of the suspended particles. This study analyzes the characteristics of alumina al2 o3 water nanofluid to determine the feasibility of its application in an aircooled heat exchanger for heat dissipation for pemfc or electronic chip.
The relative importance of nanofluid parameters for heat transfer evaluated in this article allows engineering nanofluids with desired set of properties. Heat transfer analysis of a shell and tube heat exchanger was carried out experimentally using zinc oxide as a nanofluid. The convective heat transfer coefficient of fe 3 o 4 water nanofluid for flow through the internally finned tube and plain tube is evaluated under the turbulent flow conditions for the volume. Pdf application of nanofluid in heat exchangers for. Mass flow rate on tube side was varied while on the shell side it was kept constant. The computational fluid dynamic code is used to simulated different concentrations of nanofluid 0. Tube side pr number of heat exchanger using nanofluid was decreased by 11%. Cfd and experimental investigation on the heat transfer scielo. Research article effect of twistedtape turbulators and. Counter flow heat exchanger, nanofluids, iron powder, exchanger. The overall heat transfer coefficient of heat exchanger using nanofluid was increased by 9% compared to that of basefluid.
Effect of twistedtape turbulators and nanofluid on heat transfer in a double pipe heat exchanger heydarmaddah, 1 rezaaghayari, 1 morshedfarokhi, 2 shabnamjahanizadeh, 1 andkhatereashtary 3. Later, brinkman 1952 presented a viscosity correlation eq. Performance evaluation on an aircooled heat exchanger for. Review of literature on heat transfer enhancement in heat. Water to nanofluids heat transfer in concentric tube heat. Jun 12, 2019 in the present paper, the heat transfer and fluid flow characteristics of a coppermade heat exchanger were experimentally studied. Morteza ghanbarpour, nader nikkam, rahmatollah khodabandeh, muhammet s. Analysis of heat transfer enhancement of heat exchanger. Nanoparticles can be produced from several processes such as gas condensation, mechanical attrition or chemical precipitation techniques.
The nanofluid was prepared using a twostep method at weight concentrations of 0. Heat transfer enhancement in shell and tube heat exchanger by. The convective heat transfer coefficient of fe 3 o 4 water nanofluid for flow through the internally finned tube and plain tube is evaluated under the turbulent flow conditions for the volume concentrations of 0. Thermal and hydraulic performance of a heat exchanger working. Numerical study of heat transfer performance of nanofluids in. In the present paper, the heat transfer and fluid flow characteristics of a coppermade heat exchanger were experimentally studied. Experimental and numerical analysis of a nanofluidic. Journal of nanofluids american scinetific publishers. Enhancement in heat transfer has been studied earlier with the help of suspended microparticles. The sensible effectiveness of the heat pipe heat exchanger obtained from experiments varied about 522 % for pure methanol and 932 % for methanolsilver nanofluid. Apr 06, 2014 nanofluids are a new class of advanced heattransfer fluids engineered by dispersing nanoparticles smaller than 100 nm in diameter in conventional heat transfer fluids. Research article heat transfer of nanofluid in a double pipe.
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