Vol. 7 No. 1 (2024)

Open Access

Original Research Article

Article ID: 181

Reliability / Security of Distribution System Network under Supporting by Distributed Generation

by Ali M. Eltamaly, Yehia Sayed Mohamed, Abou-Hashema M. El-Sayed, Amer Nasr A. Elghaffar

Insight - Energy Science, Vol.7, No.1, 2024; 2372 Views, 79 PDF Downloads

This paper discusses the impact of Distributed Generator (DG) on the power system for enhancing the power system quality by improving the voltage profile and power losses reduction. With the increasing on the demand power and the power system extension, the distributed renewable energy technologies are becoming increasingly important in the energy supply systems of many countries. DGs units can be defined as a small-units that generate electric power near to the location of customers based on the renewable energy techniques, including wind energy, solar energy, and geothermal energy. Interconnecting DG to an existing distribution system provides various benefits to several entities as for example the owner, utility and the final user. DG provides an enhanced power quality, higher reliability of the distribution system and can peak shaves and fill valleys. However, the integration of DG into existing networks has associated several technical, economic and regulatory questions. Also, this paper uses the power system IEEE-12 busses for an example to illustrate the voltage control and decreases the active and reactive power losses by adding the wind generation DGs with the distribution network. 

Open Access

Original Research Article

Article ID: 603

Collaborative research on rural distributed photovoltaic development and new energy vehicles moving to the countryside under the background of dual carbon

by Shi Yin, Lirui Liu, Jianfang Li, Ruijia Ju, Tahir Mahmood

Insight - Energy Science, Vol.7, No.1, 2024; 213 Views, 81 PDF Downloads

In the context of dual carbon, there is a synergistic effect between the development of rural distributed photovoltaics and the introduction of new energy vehicles to the countryside. The synergistic development of the two is of great significance for promoting sustainable development and energy transformation. This paper aims to study how the coordinated development of rural distributed photovoltaic and new energy vehicles in the countryside can produce efficiency, what kind of efficiency it can produce under the background of dual carbon, and explore its collaborative development strategy. Based on the background environment of green development, this paper discusses the current situation, significance, policy effect, and difficulties of the collaborative development of rural distributed photovoltaic development and new energy vehicles in the countryside. On this basis, it analyzes the efficiency and mechanism of its collaborative development. The conclusion indicates that, under the dual carbon background, the development of distributed photovoltaics in rural areas and the deployment of new energy vehicles to rural areas are full of opportunities and challenges. The synergistic development of the two has the synergistic effects of sharing clean energy, complementary energy conservation and emission reduction, optimizing energy consumption structures, promoting economic development, increasing employment opportunities, and improving rural living quality. It is of great significance for achieving the dual-carbon goal. This article provides a reference for the development of distributed photovoltaics in rural areas and the coordinated development of new energy vehicles in rural areas under a dual-carbon background and has certain practical and theoretical significance.

Open Access

Original Research Article

Article ID: 583

Life cycle assessment of Bitcoin mining in the top ten miner countries

by Rahim Zahedi, Alireza Aslani, Mohammad Ali Nasle Seraji

Insight - Energy Science, Vol.7, No.1, 2024; 600 Views, 141 PDF Downloads

An unprecedented emergence has occurred for the cryptocurrencies among enterprises, customers, and investors as a result of the growing number of internet connections worldwide. The most popular cryptocurrency is Bitcoin representing the rise of digital payment systems. Though, harsh criticism has been also created for cryptocurrencies about their environmental sustainability and power consumption, decelerating the acceptance of bitcoin by consumer as a means of payment. The ecological impact or footprint of a process is determined mainly through life-cycle-assessment (LCA) quantifying all material flows’ inputs and outputs for a process or product and their effect on the environment. This study provides LCA-based framework to show the environmental impacts of Bitcoin mining from top ten miner countries (China, USA, Kazakhstan, Russia, Iran, Malaysia, Canada, Germany, Ireland, Norway). The results show that with the share of 53.3% of the world’s mining, China has the most negative environmental impact specially in marine ecotoxicity with 26.8 kg 1,4-DCB and human health with 0.0043 DALY but with the equal mining ratio Germany and Kazakhstan have the most negative environmental impacts.

Open Access

Review Article

Article ID: 117

The process of liquefied natural gas

by Zhaoyin Jiang, Lixi Peng, Shiyao Chang, Ping Ouyang

Insight - Energy Science, Vol.7, No.1, 2024; 1539 Views, 39 PDF Downloads

In this paper, the analysis of liquefied natural gas process plant technology, into the device before the natural gas compression, and then through the MEA aqueous solution to remove CO2. Finally, the compressed water removed; clean natural gas before entering the liquefaction unit. In the liquefaction unit, the high-pressure natural gas is cooled and liquefied deep. The required cooling capacity is obtained by circulating the gas turbine to drive the closed mixed refrigerant nitrogen, methane, ethylene, propane and other components, and liquefied natural gas (LNG), which is finally stored in an atmospheric tank through a liquefied natural gas container or liquefied natural gas tanker for distribution. The recycle of the recycle refrigerant is carried out by means of environmental conditions. The heating medium required during the installation process is the hot oil heated by the exhaust gas of the gas turbine. The liquefied gas in the liquefied natural gas tank is compressed to regenerate the desiccant and then sent to the gas turbine as the fuel gas.

Open Access

Review Article

Article ID: 114

Light Hydrocarbon Gas Technology and Its Prospect

by Yongqiang Han, Hui Chang, Zhijun Luo

Insight - Energy Science, Vol.7, No.1, 2024; 1561 Views, 44 PDF Downloads

Light hydrocarbons are treated as a by-product of the petrochemical industry. They are clean and inexpensive fuels that not only less pollute the environment but also save valuable energy. Through the analysis of light hydrocarbon fuel development status, people now use light hydrocarbon for gasification combustion. This usage requires high quality of light hydrocarbon and strict safety. The feasibility of using light hydrocarbon gas as fuel to replace diesel in oil boilers has been proposed for the current industrial boilers in China, and the sources of light hydrocarbon fuels and the safety of such alternative technologies have been specifically described. We believe such replacement can effectively reduce the dependency of the international oil market.