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Now showing items 1765-1784 of 5783
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An experimental and computational study on efficiency of white LED packages with a thermocaloric approach
(IEEE, 2017)Thermal management of light-emitting diode (LED) chips is crucial for light extraction and lifetime. It is well known that the light output of an LED decreases with the elevated temperatures. For higher light extraction, ... -
Experimental and numerical investigation of ground heat exchangers in the building foundation
(Elsevier, 2019-05-15)The current study proposes a novel method with the experimental and numerical studies for the ground source heat pumps, which are known as environment-friendly and efficient heating & cooling systems to overcome their ... -
An experimental and numerical investigation of immersion cooled blue led combined with yag:ce phosphor for thermal, electrical and optical performance
At the new age of illumination, light emitting diodes (LEDs) have been proven to be the most efficient alternative to conventional light sources. Yet, in comparison to the other lighting systems, LEDs can withstand a lower ... -
Experimental and numerical investigation of inlet temperature effect on convective heat transfer of γ-Al2O3/Water nanofluid flows in microtubes
(Taylor & Francis, 2019-06-15)Nanofluids are the combination of a base fluid with nanoparticles with sizes of 1–100 nm. In order to increase the heat transfer performance, nanoparticles with higher thermal conductivity compared to that of base fluid ... -
Experimental and numerical investigation of rubber whether strip extrusion
(2019-01-03)Extrusion is the main method used to produce rubber weather strips in automotive industries. The product quality is dependent on many factors, which include the design parameters of the die, the processing variables, and ... -
Experimental and numerical investigations on compact plate heat exchanger
(2019-08-15)The objective of this thesis was to understand ow phenomena inside chevron type plate heat exchangers. To reach this goal, several visualization experiments designed and conducted. Also Large eddy ow simulations were ... -
Experimental and numerical modal characterization for additively manufactured triply periodic minimal surface lattice structures: Comparison between free-size and homogenization-based optimization methods
(Wiley, 2023-06)Homogenization-based topology optimization (HMTO) is one of the most extensively used grading methods to generate functionally graded lattice structures (FGLs). However, it requires a precharacterization of the lattices, ... -
Experimental and numerical study of rubber flow in the extrusion die of a weather strip
(Society of Chemical Engineers, 2019)Extrusion is the main method used to produce rubber weather strips in automotive industries, and the quality of the final product largely depends on the thermal properties of the process output. Therefore, precise thermal ... -
An experimental and theoretical analysis of vapor-to-liquid phase change on microstructured surfaces
(Elsevier, 2020-09)In this work, an experimental and a theoretical study was carried out on condensation heat transfer on vertically aligned bare unstructured, micro V-grooved and square-grooved copper substrates. During the experiments, ... -
Experimental characterization of multi-hop vehicular VLC systems
(IEEE, 2021)In vehicular visible light communication (VLC), the reliable communication distance may be relatively short due to its dependence on many factors including the weather condition. This necessitates the use of relay-assisted ... -
Experimental demonstration of an FPGA-based outdoor VLC broadcasting system
(IEEE, 2023)Visible light communication (VLC) uses light-emitting diodes (LEDs) to transmit data by turning them on and off at very high speeds, too fast for the human eye to perceive. In outdoor environments, LED-based streetlights ... -
Experimental demonstration of polarisation shift keying in the free space optical turbulence channel
(IEEE, 2012)In this paper, the performance of binary polarisation shift keying (BPOLSK) with the direct detection (DD) scheme is experimentally investigated. BPOLSK scheme is used to mitigate the atmospheric turbulence induced fading ... -
Experimental evaluation of a software defined visible light communication system
(IEEE, 2020)Visible light communication (VLC) allows the dual use of light-emitting diodes (LEDs) for illumination and communication purposes. With its large bandwidth and immunity to electromagnetic interference, VLC can be used as ... -
Experimental evaluation of unipolar OFDM VLC system on software defined platform
(IEEE, 2019)With unique features and advantages, visible light communication (VLC) is considered as a powerful complementary wireless access technology to radio frequency solutions such as WiFi. To handle the frequency-selectivity of ... -
An experimental framework for designing a parametric design course
(2021-12)Architectural forms, architectural knowledge, design process, and design thinking are all changing with the use of computer-aided design programmes, and even traditional university architecture departments now wish to teach ... -
Experimental impact analysis of the refrigerator cable design on disturbance power test
The ever-increasing variety of electronic products brings with it many tests and controls. Especially for a product such as a refrigerator, which has an important place in the lives of users and works non-stop for almost ... -
Experimental impact analysis of the refrigerator cable design on disturbance power test
(IEEE, 2022)The ever-increasing variety of electronic products brings with it many tests and controls. Especially for a product such as a refrigerator, which has an important place in the lives of users and works non-stop for almost ... -
Experimental impact analysis of the refrigerator cable distributions on conducted electromagnetic emission
(IEEE, 2022)As the number of electronic devices in our daily lives increases day by day, the risk of electromagnetic interference (EMI) between the devices and between the device and the grid increases. Refrigerators are the only ... -
An experimental inquiry about the additive effects of assigned and primed goals and their interaction with performance feedback
(Istanbul University, 2020)Goal setting and performance feedback are two important tools used to improve organizational effectiveness. The roles of these two variables in improving job/task performance have been investigated by numerous studies; ... -
An experimental investigation into frost accumulation over vertical finned and unfinned surfaces during impinging air flow
(ASME, 2020)Frost formation on evaporators negatively affects the cooling performance of refrigerators. It increases the thermal resistance between the refrigerant and air leading to a reduction in the system cooling capacity. In this ...
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