Theoretical Investigation on the Properties of R744/R290 Mixtures
Procedia Engineering, 2017 Abstract At present, an interesting research is to find promising environmentally-friendly refrigerants in auto-cascade refrigeration cycle. This paper proposed a refrigerant mixture of R744 and R290 due to its zero ozone depletion potential and negligible global warming potential.
Li Zhang +4 more
openaire +1 more source
Analisis Numerik Simulasi Kinerja Sistem Tata Udara Unitary Menggunakan Liquid-Suction Heat Exchanger dengan Refrigeran Hidrokarbon [PDF]
, 2018 One of the environmental issues to be addressed, particularly in the field of refrigeration and air conditioning, is the destruction of the ozone layer and the effects of global warming due to the use of environmentally inefficient refrigerants.
Muhammad, N. (Nuriyadi)
core
Sizing and parametric optimization of a waste heat to power plant based on transcritical organic Rankine cycle [PDF]
, 2015 peer reviewedIn recent years, the transcritical (also called supercritical) organic Rankine cycle (Trans-ORC) has more and more aroused the attention for power generation from low-temperature heat source thanks to the better thermal matching between the ...
Abdelhamid, Kheiri +3 more
core
Nonequilibrium Brownian motion beyond the effective temperature
, 2014 The condition of thermal equilibrium simplifies the theoretical treatment of fluctuations as found in the celebrated Einstein's relation between mobility and diffusivity for Brownian motion.
Gnoli, Andrea +3 more
core +4 more sources
Literature review of condensation and evaporation of R290
, 2016 Nowadays, an increasing attention in environmental issues including the global warming effect and ozone layer depletion has been attracted. R22 is urged to be ruled out until 2020 and 2030 for developed and developing countries. R290 (propane) has been regarded as a promising alternative refrigerant for the air-conditionings.
Liu, Cichong +4 more
openaire +1 more source
In-tube Evaporation Pressure-drop Characteristics of R290 and R404A
Zhileng xuebao, 2006 The experimental results of in-tube evaporation pressure-drop of R290 and R404A in the horizontal smooth tube and the horizontal microfin tube were compared with calculation results by Lockhart & Martinelli pressure-drop correlation,respectively.Moreover,
韩晓霞, 南晓红, 刘咸定
doaj +2 more sources
Case Studies in Thermal EngineeringBased on the pursuit of lower temperatures and environmentally friendly refrigerants in domestic refrigerator-freezers, this paper investigates the performance of a hydrocarbon mixture R600/R290 in a bypass two-circuit cycle applied in −40 °C frost-free ...
Jiarui Liu, Ye Liu
doaj +1 more source
Thermodynamic Analysis of Low GWP Refrigerant Mixtures in a Refrigerator as Replacement to R-134A
Journal of Mechanical Engineering, 2019 Chlorofluorocarbons and hydro chlorofluorocarbons (HCFCs) are replaced by hydroflourocarbons (HFCs) which is not harmful to the ozone layer. However, few of HFCs have a relatively high global warming potential (GWP) and are subject to further examination
Hasheer Sk Mohammad, Srinivas Kolla
doaj +1 more source
The fox Operon from Rhodobacter Strain SW2 Promotes Phototrophic Fe(II) Oxidation in Rhodobacter capsulatus SB1003 [PDF]
, 2007 Anoxygenic photosynthesis based on Fe(II) is thought to be one of the most ancient forms of metabolism and is hypothesized to represent a transition step in the evolution of oxygenic photosynthesis.
Croal, Laura R. +2 more
core +1 more source
Properties of potential eco-friendly gas replacements for particle detectors in high-energy physics
, 2015 Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potential eco-friendly
Ban, Y. +13 more
core +1 more source