Results 11 to 20 of about 8,063 (215)

Optimization of 700℃ Ultra-supercritical Single Reheat Power Generation System

open access: yes发电技术, 2021
The superheat degree of steam extraction is high in the ultra-supercritical single reheat unit. It results in largely irreversible loss and poor system perfection.
Mei YANG   +5 more
doaj   +1 more source

Dynamic Simulation of System Performance Change by PID Automatic Control of Ocean Thermal Energy Conversion

open access: yesJournal of Marine Science and Engineering, 2020
Near infinite seawater thermal energy, which is considered as an alternative to energy shortage, is expected to be available to 98 countries around the world.
Lim Seungtaek, Lee Hoseang, Kim Hyeonju
doaj   +1 more source

The effect of changing superheat degrees on energy consumption in a split air conditioning

open access: yesJournal of Physics: Conference Series, 2020
Abstract Split air conditioning is the most widely used in the community for both commercial and domestic purpose. But it can cause inefficiency or waste of energy use by the system. For this reason, it is very important to keep the system working in optimum conditions to prevent wasteful use of energy by the air conditioning system ...
I N Ardita   +2 more
openaire   +1 more source

Effect of gaseous CO2 on superheated steam flow in wells

open access: yesEngineering Science and Technology, an International Journal, 2017
In this paper, a novel model is proposed for estimating pressure and temperature in wellbores when CO2 and superheated steam (SHS) are co-injected. Firstly, a model comprised of mass, energy and momentum conservation equations are developed.
Fengrui Sun, Yuedong Yao, Xiangfang Li
doaj   +1 more source

Comparative analysis of BLEVE mechanical energy and overpressure modelling [PDF]

open access: yes, 2017
The mechanical effects of a BLEVE are overpressure and ejection of fragments. Although fragments reach much longer distances, peak overpressure can be very strong over a certain area.
Casal Fàbrega, Joaquim   +2 more
core   +2 more sources

Numerical simulation of superheated steam flow in dual-tubing wells

open access: yesJournal of Petroleum Exploration and Production Technology, 2017
In this paper, a novel model is presented to estimate the thermophysical properties of superheated steam (SHS) in dual-tubing wells (DTW). Firstly, a mathematical model comprised of the mass conservation equation, momentum balance equation and energy ...
Fengrui Sun, Yuedong Yao, Xiangfang Li
doaj   +1 more source

Surface Engineering for Phase Change Heat Transfer: A Review [PDF]

open access: yes, 2014
Among numerous challenges to meet the rising global energy demand in a sustainable manner, improving phase change heat transfer has been at the forefront of engineering research for decades.
Attinger, Daniel   +7 more
core   +4 more sources

Thermo-Economic Performance Analysis of a Regenerative Superheating Organic Rankine Cycle for Waste Heat Recovery

open access: yesEnergies, 2017
The Organic Rankine Cycle (ORC) is a promising form of technology for recovering low-grade waste heat. In this study, a regenerative ORC system is established to recover the waste flue gas of 160 °C.
Zhonghe Han   +4 more
doaj   +1 more source

Numerical simulation of shrinkage porosity defect in billet continuous casting

open access: yesHigh Temperature Materials and Processes, 2023
Shrinkage porosity is a typical internal defect in the continuous casting billet, which occurs frequently and is difficult to solve. To explore the influence factors of central shrinkage porosity, a novel unsteady thermomechanical coupling analysis ...
Wang Xingjuan   +4 more
doaj   +1 more source

Effects of compressor speed and electronic expansion valve opening on the performance of R410a water chiller system

open access: yesWasit Journal of Engineering Sciences, 2020
Refrigeration and air conditioning systems consume high rates of electrical energy of the total global power consumption. The major part of this energy is used by compressor which is the main equipment in vapor compression refrigeration systems. In this
Ahmed H. Al-Hassani, Alaa R. Al-Badri
doaj   +1 more source

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