Results 21 to 30 of about 2,069 (285)

We Mean Green Environmental Science Club [PDF]

open access: yes, 2020
Lesson Plans for an Environmental Science Club. This club seeks to promote environmental awareness to elementary students through hands-on activities, videos, and ...
Heyen, Maria E, Prehn, Lauren
core   +1 more source

Visualization of Patterned Modified Surfaces in Condensation and Frosting States [PDF]

open access: yesEnergies, 2019
In this study, a novel, thorn-shaped, containing, hydrophilic, and hydrophobic surface is proposed to have a better condensate drainage characteristic and to delay the required time for frosting. By using a hydrophilic and hydrophobic mixed thorn-shaped surface created by screen printing, the design makes use of the differences in the wettability ...
Kai-Shing Yang, Wei Lu, Yu-Lieh Wu
openaire   +1 more source

Radiative Characteristics of Frost Layer in Frosting and Defrosting Processes [PDF]

open access: yes, 1992
Radiative characteristics of the frost layer melted by radiative heat are experimentally examined. A frost layer is heated from above by the radiative heat from a halogen lamp set. Thermal radiation of the lamp has the wavelength spectrum characteristics
Inaba, Hideo   +2 more
core   +1 more source

Study on the Anti-Frosting and Droplet Contact Characteristics of Fluorine-Based Self-Assembled Superhydrophobic Coating [PDF]

open access: yesCailiao Baohu
In order to study the effect of the cold surface on the anti-frosting performance of the superhydrophobic coating and the impact contact behavior of droplets, a fluorine-based self-assembled superhydrophobic coating was sprayed on the surface of carbon ...
YANG Jinglong, QIU Chao
doaj   +1 more source

Defrosting Performance Improvement of Air-Source Heat Pump Combined Refrigerant Direct-Condensation Radiant Floor Heating System with Phase Change Material

open access: yesEnergies, 2020
Traditional defrosting methods applied to solve frosting problems of air-source heat pumps operating in cold periods may reduce heat capacity of the system and decrease indoor thermal comfort.
Chenxiao Zheng   +6 more
doaj   +1 more source

Developing condensing-frosting performance maps for a variable speed air source heat pump (ASHP) for frosting suppression

open access: yesApplied Thermal Engineering, 2022
For a space heating ASHP unit, frosting on its outdoor coil would adversely impact its normal operation, requiring frequent defrosting and resulting in low operating efficiency and poor indoor thermal comfort. It has been shown that varying the speeds of both compressor and outdoor air fan in a variable speed (VS) ASHP unit can lead to different ...
Shengnan Liu   +6 more
openaire   +3 more sources

Condensation phenomena and frost problems in the air heat recuperators [PDF]

open access: yesMATEC Web of Conferences, 2014
Investigation results of condensation phenomena and frost problems in the ventilation heat recuperators are presented. The experiments have been conducted for typical value of indoor temperature 20°C and a large range of humidity values from 20 to 75% and more of an exhausted air.
Adamski Mariusz, Kiszkiel Paula
openaire   +2 more sources

Dropwise condensation freezing and frosting on bituminous surfaces at subzero temperatures

open access: yesConstruction and Building Materials, 2021
Construction and Building Materials ...
F. Tarpoudi Baheri   +3 more
openaire   +2 more sources

Frosting Characteristics of Horizontal Array Square Micropillar Surface under Natural Convection

open access: yesZhileng xuebao, 2021
In this study, a micromachined array square micropillar metal surface was fabricated. Its frosting characteristics under natural convection were investigated experimentally at an ambient temperature of Tatm= 24 ℃ and relative humidity of 17%, with ...
Zhang Tianlei, Zhao Yanjie
doaj  

Condensation Frosting Characteristics of SAM-Coated Nanostructured Superhydrophobic Surface

open access: yesInternational Journal of Air-Conditioning and Refrigeration, 2018
The present study aims to experimentally investigate the condensation frosting characteristics of the SAM-coated superhydrophobic surfaces under various environmental conditions. The extensive experiments were carried out under the well-controlled conditions with the surface temperature ranging from [Formula: see text]C to [Formula: see text]C, the ...
Chan Ho Jeong, Seong Hyuk Lee
openaire   +1 more source

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