Results 31 to 40 of about 688,532 (200)

Diagnosing the time-dependence of active region core heating from the emission measure: II. Nanoflare trains [PDF]

, 2013
The time-dependence of heating in solar active regions can be studied by analyzing the slope of the emission measure distribution cool-ward of the peak.
Bradshaw, Stephen J., Klimchuk, James A., Reep, Jeffrey W.   +2 more
core   +2 more sources

Active cool roof effect: impact of cool roofs on cooling system efficiency

Advances in Building Energy Research, 2013
Cool roofs represent an acknowledged, relatively simple, and low-cost strategy to reduce cooling energy demand of buildings and mitigate urban heat island phenomena. The purpose of this paper is to study the coupled passive–active effect produced by such a technology, where the active effect consists of the cool roof capability to decrease the suction ...
PISELLO, ANNA LAURA, Santamouris, Mattheos, COTANA, Franco   +2 more
openaire   +2 more sources

Overview of Recent Solar Photovoltaic Cooling System Approach

Technologies
In recent years, research communities have shown significant interest in solar energy systems and their cooling. While using cells to generate power, cooling systems are often used for solar cells (SCs) to enhance their efficiency and lifespan.
Yaareb Elias Ahmed, Mohammad Reza Maghami, Jagadeesh Pasupuleti, Suad Hassan Danook, Firas Basim Ismail   +4 more
doaj   +1 more source

On the Cooling of the Neutron Star in Cassiopeia A

, 2011
We demonstrate that the high-quality cooling data observed for the young neutron star in the supernova remnant Cassiopeia A over the past 10 years--as well as all other reliably known temperature data of neutron stars--can be comfortably explained within
C. Schaab, D. Blaschke, D. N. Voskresensky, D. N. Voskresensky, D. N. Voskresensky, F. Weber, H. Grigorian, H. Tananbaum, W. B. Ashworth Jr.   +8 more
core   +1 more source

UV energy distributions of active cool stars [PDF]

Symposium - International Astronomical Union, 1997
We present semi-empirical models based on the “minimum-temperature-concept” in order to provide a description of the UV spectra of solar type stars consistent with the observational data.
C. Morossi, M. Franchini, M. L. Malagnini   +2 more
openaire   +1 more source

Investigating the cooling of solar photovoltaic modules under the conditions of Riyadh

Journal of King Saud University: Engineering Sciences, 2023
Cooling enhances the energy conversion efficiency and output of photovoltaic (PV) panels. In this work, the effects of natural convection, forced convection, and evaporative cooling on the performance of polycrystalline PV panels were investigated.
A. Almuwailhi, O. Zeitoun
doaj   +1 more source

Suppression of extraneous thermal noise in cavity optomechanics [PDF]

, 2011
Extraneous thermal motion can limit displacement sensitivity and radiation pressure effects, such as optical cooling, in a cavity-optomechanical system. Here we present an active noise suppression scheme and its experimental implementation.
Anetsberger, Arcizet, Aspelmeyer, Black, Braginsky, Braginsky, Butt, Callen, Carmon, Chan, Cleland, Cleland, Cohadon, Cole, Dalziel J. Wilson, Diósi, Drever, Eichenfield, Gabrielson, Genes, Gillespie, Gröblacher, H. J. Kimble, Harry, Jayich, K.-K. Ni, Kippenberg, Marquardt, Marquardt, Metzger, Numata, O’Connell, Penn, Phelps, Pinard, Poggio, Rabl, Riviere, Sankey, Santamore, Saulson, Sheard, Teufel, Thompson, Wilson, Wilson-Rae, Yi Zhao, Zwickl   +47 more
core   +3 more sources

Preweaning heat stress alters liver transcriptome and DNA methylation in dairy calves

Journal of Dairy Science
: Prenatal hyperthermia has long-lasting effects on dairy calf metabolism, immunity, and productivity. Yet, the effects of postnatal heat stress on neonatal calves remain unclear.
Jimena Laporta, Bethany Dado-Senn, Anne R. Guadagnin, Lihe Liu, Francisco Peñagaricano   +4 more
doaj   +1 more source

Water-Cooled Thermoelectric Generators for Improved Net Output Power: A Review

Energies, 2021
Thermoelectric generators (TEGs) have the ability to convert waste heat into electrical energy under unfavorable conditions and are becoming increasingly popular in academia, but have not yet achieved a broad commercial success, due to the still ...
Björn Pfeiffelmann, Ali Cemal Benim, Franz Joos   +2 more
doaj   +1 more source

Active cooling of a mobile phone handset [PDF]

Applied Thermal Engineering, 2010
Power dissipation levels in mobile phones continue to increase due to gaming, higher power applications, and increased functionality associated with the internet. The current cooling methodologies of natural convection and radiation limit the power dissipation within a mobile phone to between 1-2 W depending on size.
Grimes, Ronan, Walsh, Ed J., Walsh, Pat A.   +2 more
openaire   +4 more sources