Results 81 to 90 of about 10,659 (309)
Low Global Warming Potential (GWP) Alternative Refrigerants Evaluation Program (Low-GWP AREP)
, 2012 In response to environmental concerns raised by the use of high global warming potential (GWP) refrigerants, the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) launched an industry-wide cooperative research program, AHRI Low-GWP ...
Amrane, Karim +2 more
core
Advanced Materials Interfaces, EarlyView.We report electrochemical quantum capacitance spectroscopy as an ambient, in situ probe for defect‐mediated electronic structure at 2D material interfaces. Using monolayer MoS2, the method resolves band edges and vacancy states, tracks sulfur‐vacancy evolution during hydrogen evolution, and links interfacial density‐of‐states changes to nearly ...
Mengyu Yan +9 more
wiley +1 more source
A Risk Assessment for Leakages of Flammable Refrigerants into a Closed Space
, 2012 This study proposes a procedure for a risk analysis for leakages of flammable refrigerants into a poorly ventilated three-dimensional space. It also presents several test cases of risk analyses on flammability and ignitions to a leaked refrigerant ...
Aute, Vikrant +2 more
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Advanced Materials Interfaces, EarlyView.This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos +6 more
wiley +1 more source
Investigation Of Low GWP Refrigerant Interaction With Various Lubricant Candidates
, 2012 Refrigerants used in various air conditioning and refrigeration industries are going through changes today and continued changes into the near future. These changes are being driven by environmental and energy efficiency regulations and could result in ...
Beattie, Roger J., Karnaz, Joseph A.
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Evaluation of pentanes as refrigerants for heat pumps with sink temperatures above 130°C
762772This study examines the use of hydrocarbon refrigerants for high-temperature heat pumps (HTHP), aiming to decarbonize process heat. Synthetic refrigerants are being phased out due to their environmental impact, the need for natural refrigerants as ...
Fugmann, Hannes +4 more
core +1 more source
Advanced Materials Technologies, EarlyView.The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz +5 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane +4 more
wiley +1 more source
Experimental Performance of R-1234yf as a Drop-in Replacement for R-134a in Domestic Refrigerators
, 2012 Concerns about anthropogenic climate change have generated an interest in low global warming potential (GWP) refrigerants and have spawned policies and regulations that encourage the transition to low GWP refrigerants. Recent research has largely focused
Karber, Kyle M. +2 more
core
Ejector characterization for refrigeration applications with natural refrigerants [PDF]
, 2018 Employing natural fluids in refrigerating plants at warm climate conditions sometimes impacts negatively on the system performance. Ejectors can play a key role in configurations aiming at improving the efficiency of such systems, however their ...
F. Giacomelli +9 more
core +1 more source