This paper aims to establish six-dimensional (6D) printing as a new branch of additive manufacturing investigating its benefits, advantages well possible limitations concerning the design and effective smart structures. The concept 6D printing, authors’ best knowledge, is introduced for first time. method combines four-dimensional (4D) five-dimensional (5D) techniques. means that process going use five degrees freedom creating final object while produced material component will be...

The control of environmental parameters in livestock farming is essential to achieve optimal ranges temperature and humidity. HVAC systems for this purpose are characterized by high energy demands, causing significant GHG emissions when relying on fossil fuels. aim study the development testing a sustainable heating system nursery barn hosting 2500 weaners, as well assessment effectiveness performance new system. This work involved implementation renewable source (RES) incorporating borehole...

The potential of the Trilateral Flash Cycle (TFC) for efficient conversion solar energy to power in Europe is assessed this work. A numerical analysis a Solar-TFC thermal unit performed, by applying an in-house model. Flat Plate Collectors (FPC) and Evacuated Tube (ETC) are modeled as heat sources. Particular focus on technological bottleneck TFC, i.e. two-phase expansion, novel expansion Annual simulations performed with total efficiency maximized at each time step. annual Solar-TFC, exergy...

The laminar fully developed ferrofluid flow of an otherwise magnetic fluid into a curved annular duct circular cross section, subjected to transverse external field, is studied in the present work. specific geometry chosen as it encountered heat exchangers and mixers where compactness priority. Results are obtained for different values curvature, field strength, particles’ volumetric concentration. A computational algorithm used which couples continuity, Navier Stokes, magnetization...

Environment control systems in broiler houses utilize non-renewable electricity and fuels as energy sources, contributing to the increase greenhouse gases, while not providing optimal conditions. The heat pump (HP) is an energy-efficient technology that can continuously regulate indoor temperature relative humidity by combining different operation modes (heating, cooling, dehumidifying). current study presents analytical numerical model developed Simulink, capable of simulating thermal loads...

A numerical analysis is performed to study the fully developed laminar flow of an electrically conducting liquid metal between two concentric cylinders in presence external transverse magnetic field. The outer cylinder constant, and inner constant or rotating at a angular velocity about its axis. are maintained uniform temperatures. temperature difference walls creates buoyancy force, due density variations. CVP variational method used for study. obtained results compared various velocities,...

Purpose – The steady laminar quasi-3D fully developed magnetohydrodynamic (MHD) flow of a liquid metal in curved annular channel is studied order to determine the effect magnetic field on velocity distribution. paper aims discuss this issue. Design/methodology/approach Due fluid motion under applied transverse external field, an additional and electric current density are induced. A hybrid formulation used for induced density, implementing its axial component Ohm’s law components Ampere’s...

The purpose of this paper is to study the fully developed laminar magnetohydrodynamic (MHD) and thermal flow an electrically conducting liquid metal between two horizontal concentric cylinders, maintained at uniform temperatures, under effect external transverse magnetic field. temperature difference walls creates buoyancy force, due density variations. Three different models are compared for solution electromagnetic variables. φ-formulation, based on electric potential equation,...

We studied the laminar fully developed ferrofluid flow and heat transfer phenomena of an otherwise magnetic fluid into a vertical annular duct circular cross-section uniform temperatures on walls which were subjected to transverse external field. A computational algorithm was used, coupled continuity, momentum, energy, magnetization Maxwell’s equations, accompanied by appropriate conditions, using continuity–vorticity–pressure (C.V.P.) method non-uniform grid. The results obtained for...

The present paper investigates different organic Rankine cycle (ORC) configurations, which can convert low-grade industrial waste heat streams (80-100oC) into electricity. More specifically, the basic ORC, reheated ORC with a quasi-isothermal expander, and trilateral flash cycle, are analyzed compared. expansion is achieved through heated oil injection at multiple stages inside expander. Initially, these cycles studied parametrically in terms of energy exergy, considering same available...

The utilization of a low-grade heat source (<100 o C) can improve energy conservation and reduce the harmful emissions contributing effectively to environment protection.Consequently, advancement technologies related heat-to-power conversion applications needs be considered, since large amounts from industrial are rejected ambient.Trilateral Flash Cycle (TFC) is thermodynamic cycle that employs same components as an organic Rankine (ORC) unit, while main difference with latter working fluid...

In this work, the annual performance of a solar thermal power system in Greece is numerically studied.The consists field Evacuated Tube Collectors and Trilateral Flash Cycle engine.The main target study to assess potential Cycle, promising higher efficiency alternative Organic Rankine for energy exploitation.The effects irradiance, temperature heat source, flashing on total conversion are monitored.The economics preliminarily studied taking into account its scale anticipated...

The laminar fully developed magnetohydrodynamic (MHD) and thermal flow of a liquid metal into curved annular duct circular cross section, subjected to transverse external magnetic field, is studied in the present work. cylinders are maintained at different uniform temperatures, thus buoyancy forces between walls created. Applying our computational methodology, results obtained for values curvature (0-0.2), Reynolds number (100-2000), Grashof (0 – 106) Hartmann (0-2000). magnitude velocity...

The current research, which can be employed in various engineering applications, is involved with the investigation of heat transfer effect on laminar and fully developed ferrohydrodynamic flow into a curved annular cylindrical duct, when constant very strong transverse magnetic field applied. numerical solution constitutive partial differential equations, i.e. continuity, momentum, energy, magnetization Maxwell’s equations corresponding boundary conditions, achieved via computational...

The fully developed magnetohydrodynamic (MHD) flow of a liquid metal in curved circular pipe is numerically studied the present paper, under effect an external applied transverse magnetic field. complementary variational principle (CVP) numerical method used for coupling continuity and Navier-Stokes equations hybrid formulation implementation electromagnetic variables. main interest here to determine redistribution velocity different parameters curvature Hartmann number.

The brine produced from desalination systems is a highly concentrated mixture, including cleansing chemicals the water treatment processes that can possibly degrade ecosystems in discharge areas. Evaporation widely used method for of high salinity mixtures; however, it requires careful monitoring temperature and pressure order to protect equipment corrosive environment discharge. proposed system based on principle vacuum evaporation with use high-temperature heat pump, which classified as...