Results 81 to 90 of about 3,003 (225)

The study of thermodynamic properties of zeotropic mixtures of R600a/R23/R14

Advances in Mechanical Engineering, 2017
Thermodynamic properties of zeotropic mixtures of R600a/R23/R14 have been investigated and calculated based on the established mathematical model. The deviations of bubble pressure and vapor composition between the simulation results and the experimental
Yinlong Wu, Hua Zhang, Qingqing Zhang, Jinyou Qiu, Shengjun Rui   +4 more
doaj   +1 more source

Mengurus masyarakat Singapura gaya Lee Kuan Yew: satu legasi [PDF]

, 2020
Lee Kuan Yew (LKY) negarawan unggul Asia Tenggara yang berjaya menggerakkan tindakan-tindakan pragmatik dengan nilai dan gaya kepimpinan berkesan demi mencapai visi pembangunan Singapura. Memiliki pengalaman politik hampir 60 tahun (1955-2011) menjadikan
Jaes, Lutfan, Mohamad Suhaimy, Khairul Azman, Mohd Yusof, Asyraf Maula, Razali, Nurul Aimi   +3 more
core  

Performance investigation of a direct-cooled refrigerator with CuO-R600a as a nanorefrigerant

Case Studies in Chemical and Environmental Engineering
Nanorefrigerant are used extensively in refrigeration applications due to their improved heat transfer properties. It requires a working fluid with high heat transfer coefficients to achieve maximum thermal performance.
Hussain Pipwala, Ragesh Kapadia, Hitesh Panchal, Bharat Singh, Prateek D. Malwe, Abhinav Kumar, Emad Makki, Jayant Giri   +7 more
doaj   +1 more source

Experimental assessment of R134a and its lower GWP alternative R513A [PDF]

, 2017
Lower GWP refrigerants are essential to mitigate the impact of refrigeration systems on climate change. HFO/HFC mixtures are currently considered to replace HFCs in refrigeration and air conditioning systems.
Khodabandeh, Rahmatollah, Makhnatch, Pavel, Mota-Babiloni, Adrián, Navarro-Esbrí, Joaquín   +3 more
core   +2 more sources

Development and Analyses of Artificial Intelligence (AI)-Based Models for the Flow Boiling Heat Transfer Coefficient of R600a in a Mini-Channel

ChemEngineering, 2018
Environmental friendly refrigerants with zero ozone depletion potential (ODP) and zero global warming potential (GWP) are in great demand across the globe.
Nusrat Parveen, Sadaf Zaidi, Mohammad Danish   +2 more
doaj   +1 more source

Research on Performance of Heat Pump Systems Using R744 /R600 and R744 /R600a Mixtures as Refrigerants

Zhileng xuebao, 2011
Under the given conditions, the system performances of R744/R600 and R744/R600a to substitute for conventional refrigerant R22 in a subcritical heating cycle were theoretically analyzed respectively with consideration of heat transfer pinch point in heat
Fan Xiaowei, Zhang Xianping, Wang Fengkun, Shen Henggen, Chen Shengguang   +4 more
doaj  

Overview of working fluids and sustainable heating, cooling and power generation technologies [PDF]

, 2017
Dependency on energy is much higher than the past and it is clear that energy is vital for a sustainable and safer future. Therefore, urgent solutions are required not only to increase share of renewable resources but also more efficient usage of fossil ...
Climate Change, Department of Energy and Climate Change, Devrim Aydin, Richard Powell, Saffa Riffat, Yijun Yuan   +5 more
core   +1 more source

Theoretical analysis of low GWP mixture R600a/R1234ze as a possible alternative to R600a in domestic refrigerators

, 2014
In this study, a thermodynamic analysis of R600a and R600a/R134ze mixture at three compositions of 0%, 20% and 50% R1234ze is measured in a domestic refrigerator. The main purpose of this study is to theoretically verify the possibility of applying the mixture R600a/R1234ze in large capacity refrigerator. The performance has been assessed for different
Qiu, Jinyou, Zhang, Hua, Wang, Zilong, Zhou, Zhigang   +3 more
openaire   +1 more source

Capacities and Irreversibility of the Vapour Compression Refrigeration System’s Components using Aluminium oxide (Al2O3) based Nanolubricants

Nigerian Journal of Technological Development, 2023
Vapour compression refrigeration systems (VCRS) are used for cooling and preservation. Hydrochlorofluorocarbons (HCFC) and chlorofluorocarbon (CFC) commonly used as refrigerants have been phased out due to their negative impact on human and the ...
M. Ogbonnaya, O. O. Ajayi, M. A. Waheed
doaj  

Dynamic control strategy of a distillation system for a composition-adjustable organic Rankine cycle [PDF]

, 2017
Using zeotropic mixtures as working fluids can improve the thermal efficiency of Organic Rankine cycle (ORC) power plants for utilising geothermal energy.
Collings, Peter, Wang, Enhua, Yu, Zhibin
core   +1 more source