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Supercooling elimination of phase change materials (PCMs) microcapsules
(
Elsevier
, 2015 , Article)
Microencapsulated phase change materials (PCM) must not experience any supercooling, otherwise cannot be used in any latent heat applications. In this study Rubitherm®RT58 and1-octadecanol were selected as nucleating agents ...
Unravel the impact of anchoring groups on the photovoltaic performances of diketopyrrolopyrrole sensitizers for dye-sensitized solar cells
(
American Chemical Society
, 2015 , Article)
Two D-?-A dyes, one with a strong electron withdrawing cyanoacrylic acid DPP 20 and one with a weak acceptor carboxylic acid DPP 21 have been synthesized and characterized for their application in dye-sensitized solar ...
Emulsion stability and cross-linking of PMMA microcapsules containing phase change materials
(
Elsevier
, 2015 , Article)
The microencapsulation of paraffin as a phase change material (PCM) using poly methyl methacrylate (PMM) as a shell was investigated by means of suspension polymerization. The increase in the emulsion stability by using ...
Thermal properties of phase-change materials based on high-density polyethylene filled with micro-encapsulated paraffin wax for thermal energy storage
(
Elsevier Ltd
, 2015 , Article)
Microcapsules consisting of paraffin wax cores with a melting point of approximately 42 °C and a melamine-formaldehyde resin shell were synthesized using in situ polymerization. These microcapsules have a uniform distribution ...
Unconventional experimental technologies used for phase change materials (PCM) characterization: Part 2 - Morphological and structural characterization, physico-chemical stability and mechanical properties
(
Elsevier Ltd
, 2015 , Article)
Due to the high interest of appropriate characterization of PCM and hybrid PCM composites, different research centres and universities are using several material characterization techniques not commonly used with PCM, to ...
Positive influence of expanded graphite on the physical behavior of phase change materials based on linear low-density polyethylene and paraffin wax
(
Elsevier B.V.
, 2015 , Article)
The preparation of Phase Change Materials (PCM) with improved thermal conductivity, based on linear low-density polyethylene (LLDPE), paraffin wax with a melting point of approximately 42 °C and expanded graphite as well ...
Implementation of iterative learning control based deadtime compensation for PWM inverters
(
IEEE
, 2015 , Conference Paper)
Deadtime effects in PWM inverters are nonlinear and depend on the switching frequency of the inverters and the types of power devices, snubber circuits, and loads. Several deadtime compensation methods were proposed in the ...
ANN-based extraction approach of PV cell equivalent circuit parameters
(
IEEE
, 2015 , Conference Paper)
In most practical cases, a PV array is constructed from a combination of standard PV units (solar cells or panels) connected in series and/or in parallel to obtain the desired power, voltage and current ratings. However, ...
Space vector pulse width modulation techniques for a five-phase impedeance source and quazi impedeance source inverters
(
IEEE
, 2015 , Conference Paper)
Impedance source inverter (ZSI) and its variant quasi impedance source inverter (qZSI) are single stage inverters that transform dc to ac and boost the source voltage at the same time. These topologies have attracted great ...
Histogram-based thresholding in discrete wavelet transform for partial discharge signal denoising
(
Institute of Electrical and Electronics Engineers Inc.
, 2015 , Conference Paper)
White noise is a major interference source that affects the partial discharge (PD) signal detection and recognition. Wavelet shrinkage denoising methods can efficiently reject the white noise embedded in the PD signal ...