• Analysis of the energetics and stability of liquid droplets on textured surfaces with square micropillars 

  Rahman, M.A.; Goswami, A. (HEFAT, 2017)

  Numerous studies have established that roughening a hydrophobic surface can induce superhydrophobic properties on that surface. The suspended wetting state (Cassie-Baxter state) on a microtextured surface tends to collapse ...
• Experimental studies on steam condensation in horizontal and vertical microtubes 

  Sadaghiani, A.K.; Motezakker, A.; Kosar, A. (HEFAT, 2017)

  Microchannels have increasingly been used in the industry to miniaturize heat transfer equipment, improve energy efficiency, and minimize heat transfer fluid inventory. A fundamental understanding about condensation in ...
• Numerical investigation of condensation inside an inclined smooth tube 

  Noori, Rahim Abadi S.M.A.; Meyer, Josua P.; Dirker, Jaco (HEFAT, 2017)

  In this paper the effect of inclination angle on the condensation heat transfer coefficient, pressure drop and flow regime inside a smooth tube was investigated numerically. The working fluid was R134a at a saturation ...
• Conjugate jet impingement heat transfer investigation 

  Nasif, G.; Barron, R.M.; Balachandar, R. (HEFAT, 2017)

  A transient numerical investigation has been carried out in this study to evaluate the effects of the conjugate heat transfer (CHT) onto the thermal characteristics due to the air and water jet impingement process. It ...
• Thermogravimetric determination of thermal conductivity of lumpy limestones 

  Sandaka, G.; Specht, E. (HEFAT, 2017)

  It is known that limestone from different origins decomposed at same kiln conditions produce either hard burnt or soft burnt lime. The reason was unknown. In the previous research, thermal conductivity is found to be ...
• A study on heat transfer characteristics of fibonacci spiral microchannel heat sink 

  Hsu, Cheng-Hsing; Jiang, Jui-Chin; Dang, Hung-Son; Nguyen, Thi-Anh-Tuyet; Chang, Ching-Chuan (HEFAT, 2017)

  A study on a Fibonacci spiral microchannel heat sink was carried out in the present work to predict thermal resistance and pressure drop of the model. The Computational Fluid Dynamics software (ANSYS Fluent 14) and Taguchi ...
• Density measurements of endothermic hydrocarbon fuels at temperatures from 235 k to 353 k and pressures up to 4.09 mpa 

  Feng, S.; Bi, Q.C.; Pan, H.; Liu, Z.H.; Guo, Y.J. (HEFAT, 2017)

  The densities of endothermic hydrocarbon fuels were measured covering the temperature from (235.0 to 353.0) K at pressures of (0.68,1.47, 3.06 and 4.09) MPa. The densitometer is based on the attenuation theory of gamma ...
• Exploring optimal working fluids and cycle architectures for organic rankine cycle systems using advanced computer-aided molecular design methodologies 

  White, M.T.; Oyewunmi, O.A.; Haslam, A.J.; Markides, C.N. (HEFAT, 2017)

  The combination of computer-aided molecular design (CAMD) with an organic Rankine cycle (ORC) power-system model presents a powerful methodology that facilitates an integrated approach to simultaneous working-fluid ...
• Hygroscopic inertia influence on indoor environments : moisture buffering 

  Bairi, A.; Gomez-Arriaran, I.; Sellens, I.; Odriozola-Maritorena, M.; Perez-Iribarren, E. (HEFAT, 2017)

  In recent years great advances have been made, both in terms of regulation and technology, regarding the thermal behavior of buildings. However, a sustainable building, in addition to being energy efficient, must also ...
• An experimental study on adsorption characteristics of r134a and r404a onto silicagel adsorbents 

  Kilic, M.; Gonul, E. (HEFAT, 2017)

  The objective of this study is to evaluate adsorption characteristics of R134a and R404a on commercially available silica gel samples. A constant volume variable pressure method at different adsorption temperatures ...
• Method for analysing the heat recovery potential of thermoprocessing equipment 

  Hubner, D.; Ortwig, H.; Paulus, M.; Wild, D. (HEFAT, 2017)

  The importance of a heat recovery capability on thermoprocessing systems for increased cost-efficiency is rising steadily, along with energy costs. Accordingly, an increasing number of methods for recovering heat from ...
• Simultaneous optimal control and optimal cleaning scheduling of small heat exchanger networks subject to fouling 

  Santamaria, Federico Lozano; Macchietto, Sandro (HEFAT, 2017)

  Refinery operations are responsible for a high fraction of the energy used in the world and have a significant environmental impact on account of CO2 emissions. One of the major causes reducing their energy efficiency ...
• Schlieren visualizations of non-ideal compressible fluid flows 

  Conti, C.C.; Spinelli, A.; Cammi, G.; Zocca, M.; Cozzi, F.; Guardone, A. (HEFAT, 2017)

  The peculiarities of schlieren visualizations of non-ideal compressible fluid flows are analyzed with the support of experimental evidence and numerical calculation. Schlieren visualizations are performed on a vapor ...
• Near-wall determination of the turbulent prandtl number based on experiments, numerical simulation and analytical models 

  Steiner, H.; Irrenfried, C.; Brenn, G. (HEFAT, 2017)

  The Reynolds-averaged computation of turbulent flow with heat transfer most commonly introduces the turbulent Prandtl number to relate the turbulent fluxes of momentum and heat. Its significant deviation from a uniform ...
• Wall-layer model for large eddy simulation (les) of suspended sediment transport (sst) in a lab-scale turbulent open channel flow 

  Jourabian, M.; Armenio, V. (HEFAT, 2017)

  In this study, a wall layer model under the equilibrium assumption and in the large eddy simulation (LES) framework is applied to simulate the suspension of the sand particles in a turbulent open channel flow of water. ...
• Role of entropy generation and field synergy on heat transfer from confined wavy wall 

  Harikrishnan, S.; Shaligram, Tiwari (HEFAT, 2017)

  In the present study, three-dimensional numerical investigations are carried out to find the effect of confinement due to top wall on flow and heat transfer over sinusoidal wavy wall for a fixed Reynolds number (Re) of ...
• Performance analysis of fined pipe in air sampling smoke detection system at refrigerated warehouse 

  Kim, Ji Tae; Oh, Jae Sung; Lee, Young Man; Ryu, Jai Young; Ryou, Hong Sun (HEFAT, 2017)

  Refrigerated warehouse is temperature-controlled environment that contain a wide range of frozen foods and dry items. However, in situation of fire, fire is rapidly spread coupled with a dry environment and high airflow ...
• Computational fluid dynamics modelling and validation of head losses in pipe bifurcations 

  Sukhapure, Kasturi; Burns, Alan; Mahmud, Tariq; Spooner, Jake (HEFAT, 2017)

  Manifold arrangements with bifurcations/trifurcations lead to head losses in a fluid system. It is necessary to predict the steady state head loss coefficients to characterise the losses arising due to these junctions. ...
• Subgrid-scale modeling of turbulent heat transport in forced convection at high molecular prandtl numbers 

  Irrenfried, C.; Steiner, H. (HEFAT, 2017)

  Assuming strong similarity between the transport of momentum and heat is a common feature of most standard subgridscale models used in Large-Eddy Simulations (LES) of turbulent flow with heat transfer. In view of the ...
• Alternative design of hybrid desiccant cooling systems 

  Nobrega, C.E.L.; Brum, N.C.L. (HEFAT, 2017)

  Traditional vapor-compression refrigeration systems handle the air cooling and dehumidification in a single process. Depending on the characteristics of the thermal load, it is not possible to simultaneously meet the cooling ...

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