Computational simulation and optimization methodology of an ammonia–water GAX absorption cooling system
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-019-2004-4
Abstract: This paper presents a methodology for the steady-state simulation and optimization of a water–ammonia GAX cycle cooling system for residential and commercial air-conditioning applications. The study is based on an experimental GAX absorber unit described… read more here.
Keywords: methodology; system; gax; ammonia water ... See more keywords
Exergy analysis of intercooled reheat combined cycle with ammonia water mixture based bottoming cycle
Sign Up to like & getrecommendations! Published in 2017 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2017.04.145
Abstract: Abstract The present paper deals with exergy analysis of a combined cycle with ammonia water mixture as the working fluid in the bottoming cycle. The effect of varying ammonia mass fraction on the thermodynamic performance… read more here.
Keywords: combined cycle; ammonia water; exergy analysis; cycle ... See more keywords
Experimental investigation of a compact thermal compressor for an ammonia-water absorption heat pump
Sign Up to like & getrecommendations! Published in 2018 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2018.07.120
Abstract: Abstract An experimental evaluation of the thermal compressor of an ammonia-water absorption system is presented. A compact desorber and a rectifier based on diabatic distillation principles that lead to optimized system operation are designed and… read more here.
Keywords: absorption; thermal compressor; compressor ammonia; ammonia water ... See more keywords
Waste-heat driven ammonia-water absorption chiller for severe ambient operation
Sign Up to like & getrecommendations! Published in 2019 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2019.03.098
Abstract: Abstract A packaged ammonia-water absorption chiller using a waste-heat stream and operating at severe ambient conditions is developed and experimentally evaluated. The chiller is designed to provide 2.6 kW of cooling at an ambient temperature of… read more here.
Keywords: heat; ammonia water; absorption chiller; water absorption ... See more keywords
Design and analysis of an ammonia-water absorption heat pump
Sign Up to like & getrecommendations! Published in 2020 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2019.114531
Abstract: Abstract This study focuses on the improvement of the efficiency of an absorption heat pump for high heating temperatures with ammonia-water as working pair, based on experimental investigations. For this purpose, the absorber and the… read more here.
Keywords: heat; ammonia water; absorption heat; heat pump ... See more keywords
Experimental investigation on binary ammonia–water and ternary ammonia–water–lithium bromide mixture-based absorption refrigeration systems for fishing ships
Sign Up to like & getrecommendations! Published in 2018 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2018.04.013
Abstract: Abstract Heat recovery of marine engine exhaust gas is an effective way of improving the onboard fuel economy and environmental compliance of fishing ships. Among such heat recovery techniques, the absorption refrigeration cycle shows potential… read more here.
Keywords: absorption refrigeration; water; ammonia water; system ... See more keywords
Experimental and numerical study of a falling film absorber in an ammonia-water absorption chiller
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2017.04.008
Abstract: Abstract In this paper, experimental and numerical studies of heat and mass transfer in a falling film absorber are presented. The investigated absorber is a plate heat exchanger used in a falling film configuration. The… read more here.
Keywords: ammonia water; falling film; mass; experimental numerical ... See more keywords
Transient behavior assessments of a single-effect ammonia-water absorption heat pump system: Development of an efficient experimentally validated numerical framework
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2021.121252
Abstract: Abstract In this study, the long-term transient response of a single-effect ammonia-water gas-fired absorption heat pump prototype is investigated both numerically and experimentally. For the numerical model, heat and mass transfer components are divided into… read more here.
Keywords: heat; water; ammonia water; pump ... See more keywords
Desorber and rectifier geometries for ammonia-water absorption systems; Part I: Experimental approach and heat transfer
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Refrigeration"
DOI: 10.1016/j.ijrefrig.2020.10.020
Abstract: Abstract An experimental study of ammonia-water desorption in compact counter-flow geometries was conducted. Two novel vapor generation units, comprising integrated desorber, analyzer, and rectifier segments that use microchannel geometries, were conceptualized. The branched-tray concept features… read more here.
Keywords: desorber; rectifier; part; ammonia water ... See more keywords
Anomalous layer-thickening during micro-arc oxidation of 6061 Al alloy
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2016.11.372
Abstract: Abstract Micro-arc oxidation (MAO) has been an important surface treatment of Al alloys for surface hard-coating and corrosion protection. We used direct current (DC) as the power supply at a constant current density 10 A/dm 2… read more here.
Keywords: micro arc; layer; ammonia water; arc oxidation ... See more keywords
Comparison of SAFT-VR-Mie and CP-PC-SAFT in predicting phase behavior of associating systems I. Ammonia–water, methanol, ethanol and hydrazine
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Molecular Liquids"
DOI: 10.1016/j.molliq.2018.05.112
Abstract: Abstract This study evaluates the accuracy of SAFT-VR-Mie coupled with the new association treatment of Dufal et al. [Mol. Phys. 113 (2015) 948] and CP-PC-SAFT in modeling ammonia(1)–water(2), –methanol(2), –ethanol(2) and –hydrazine(2) systems and the… read more here.
Keywords: methanol ethanol; water methanol; saft; ammonia water ... See more keywords