Results 11 to 20 of about 6,527 (197)
The viscosity of R32 and R125 at saturation [PDF]
International Journal of Thermophysics, 1993 This paper reports new measurements of the viscosity of R32 and R125, in both the liquid and the vapor phase, over the temperature range 220 to 343 K near the saturation line. The measurements in both liquid and vapor phases have been carried out with a vibrating-wire viscometer calibrated with respect to standard reference values of viscosity.
C. M. B. P. Oliveira, W. A. Wakeham
openaire +2 more sources
Numerical analysis of a two-phase injection refrigeration cycle using R32
Journal of Thermal Engineering, 2022 The present paper reports the performance of a popular refrigerant R32 (Difluoromethane, CF2H2) experiencing the two phase injection process. Two phase injection process may lower the discharge temperature of a multistage compressor.
Praveen ALOK, Debjyoti SAHU
doaj +1 more source
Performance comparison of the single-refrigerant cascade refrigerating system
Energy Reports, 2022 In the food refrigeration industry, the single-stage compression refrigerating system cannot meet the operating conditions of a high-pressure ratio when the evaporating temperature decreases.
Zhili Sun +11 more
doaj +1 more source
The Oral Microbiome of King Richard III of England. [PDF]
Am J Biol AnthropolABSTRACT Objectives Metagenomic investigations of ancient dental calculus provide insights into oral health, disease, and diet. Here, we analyze the dental calculus metagenome of King Richard III of England (1452–1485). Materials and Methods Dental calculus DNA was extracted from three teeth of King Richard III and shotgun sequenced to a depth of ...
Velsko IM +15 more
europepmc +2 more sources
High‐Pressure Synthesis of Quantum‐Stabilised Manganese Superhydride MnH7
Angewandte Chemie, EarlyView.Superhydrides are a rarity in transition metal hosts. Through high‐pressure, high‐temperature diamond anvil cell studies, the most hydrogen‐rich transition metal hydride, MnH7${\rm MnH}_7$ has been synthesised. Density functional theory calculations demonstrate that zero‐point energy stabilises the crystalline structure that MnH7${\rm MnH}_7$ adopts ...
Mikhail A. Kuzovnikov +10 more
wiley +2 more sources
R32 And HFOs As Low-GWP Refrigerants For Air Conditioning [PDF]
, 2012 This paper will review the status worldwide on technical and policy search for next-generation refrigerants with both low Global Warming Potential (LGWP) and low Life Cycle Climate Performance (LCCP) with particular focus on R410A replacement for unitary
Pham, Hung M., Rajendran, Rajan
core +1 more source
Spillovers across House Price Convergence Clubs: Evidence from the Polish Housing Market
Real Estate Management and Valuation, 2020 The aim of this study is to assess whether significant spillovers exist among house price convergence clubs in the Polish housing market. This paper is a continuation of my previous research on house price convergence in Poland.
Tomal Mateusz
doaj +1 more source
Performance Measurement of R32 Vapor Injection Heat Pump System [PDF]
, 2012 As global warming has raised more critical concerns in recent years, refrigerants with high global warming potentials (GWP) are facing the challenges of being phased out.
Radermacher, Reinhard +3 more
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Effect of HFO Refrigerants on Lubrication Characteristics (Part 1)
Tribology Online, 2023 Focusing on hydrofluoroolefin (HFO) refrigerant, which is expected to be applied as a green refrigerant, the effect of R1234yf on the tribological characteristics was compared with hydrofluorocarbon (HFC) refrigerant R32.
Yuji Shitara, Shigeyuki Mori
doaj +1 more source
R32 Compressor for Air conditioning and Refrigeration applications in China [PDF]
, 2012 This paper evaluates the compressor performance and reliability impact by using R32 refrigerant for air conditioning (residential and commercial system); Performance and reliability impacts are compared with different popular refrigerants used in China ...
Zhan, Honghong +3 more
core +1 more source