Vol. 1 No. 1 (2018)

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.1, No.1, 2018; 1533 Views, 38 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

Original Research Article

Article ID: 116

Research on Light Source Tracking Method of Photovoltaic Power Generation System

by Jingyi Xie, Mingliang Li, Hairu Fang

Insight - Energy Science, Vol.1, No.1, 2018; 1446 Views, 21 PDF Downloads

In this paper, a new type of solar energy automatic tracking controller based on single chip microcomputer is designed to improve the utilization rate of solar energy. Using AT89S52 microcontroller as the core control components, through two photoelectric sensors, signal is collected through the comparison circuit and A / D, the results will be outputted to the single-chip microcontroller for data analysis and processing before output to ULN2003A to control the five-wire four-phase step motor to achieve the tracking of the sun position. The system has the advantages of low cost, and has good anti-interference ability improving the utilization rate of solar energy. The design firstly completed the simulation of the program, and then mainly editing using C programming to complete the program design. Through the downloader the program will be programmed into the microcontroller. Finally, through the construction of hardware experiments to achieve the objective of designed tracking.