Combined measurement method for deep sea large pressure and its small fluctuation pressure

Huaiyang Wang; Shanshan Hu; Zhengshi Liu; Yong Wang

doi:10.1063/5.0007415

Combined measurement method for deep sea large pressure and its small fluctuation pressure

Review of Scientific Instruments ◽

10.1063/5.0007415 ◽

2020 ◽

Vol 91 (8) ◽

pp. 085106

Author(s):

Huaiyang Wang ◽

Shanshan Hu ◽

Zhengshi Liu ◽

Yong Wang

Keyword(s):

Deep Sea ◽

Measurement Method ◽

Small Fluctuation ◽

Large Pressure ◽

Fluctuation Pressure

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Simulation and verification of measurement system for deep-sea pressure and its small fluctuation pressure

Measurement and Control ◽

10.1177/0020294020977879 ◽

2020 ◽

pp. 002029402097787

Author(s):

Huai-Yang Wang ◽

Shan-Shan Hu ◽

Zheng-Shi Liu ◽

Yong Wang

Keyword(s):

Measurement System ◽

Deep Sea ◽

Dynamic Pressure ◽

Pressure Change ◽

Measuring System ◽

Cross Sectional ◽

Design And Optimization ◽

Small Fluctuation ◽

Fluctuation Pressure ◽

The Cross

Combined pressure measuring system (CPMS), which is mainly used for measuring deep-sea larger pressure and its small fluctuation pressure, is studied. First, the working principle of the CPMS is introduced. Second, the mathematical model of the CPMS is established. Third, the influence of the cross-sectional area of the piston, the equivalent mass of the piston, the diving speed, the cross-sectional diameter of the compensator piston, the air content of the liquid medium, and the small fluctuation pressure on the measurement performance of the CPMS is analyzed using the simulation model. Then, the design principle of the system is summarized. Finally, the test platform is built. The results show that the dynamic pressure is not more than 0.025 bar when the pressure change speed is 0.2 bar/s, the pressure is 2.8 × 10−3 bar under 20 bar, thereby verifying the validity and accuracy of the measurement method and providing theoretical basis and reference for the design and optimization of the measurement system.

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An In Situ Measurement Method for Detecting Dissolved Deep-Sea Sulfur Ion Concentration

Chinese Journal of Lasers ◽

10.3788/cjl201845.0911011 ◽

2018 ◽

Vol 45 (9) ◽

pp. 0911011

Author(s):

刘宁武 Liu Ningwu ◽

王洪亮 Wang Hongliang ◽

何天博 He Tianbo ◽

赵月霞 Zhao Yuexia ◽

丁忠军 Ding Zhongjun ◽

...

Keyword(s):

Deep Sea ◽

Measurement Method ◽

In Situ Measurement ◽

Ion Concentration

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Application and analysis of carbon dioxide refrigeration system with ejector in commercial super cold cabinet

E3S Web of Conferences ◽

10.1051/e3sconf/202126702019 ◽

2021 ◽

Vol 267 ◽

pp. 02019

Author(s):

Li Guangpeng ◽

Zhou Yingli ◽

Wang Qi

Keyword(s):

System Performance ◽

Theoretical Basis ◽

Air Conditioning ◽

Measurement Method ◽

Operating Parameters ◽

Refrigeration System ◽

Design Development ◽

Air Conditioning System ◽

Large Pressure ◽

Experimental Parameters

In this paper, the transcritical CO2 refrigeration system with ejector is applied to a commercial ultra-cold cabinet. The influence of the key operating parameters of the ejector on the system performance is analyzed, and the measurement method of the experimental parameters is proposed. The results show that the ejector can eject the low pressure refrigerant into the reservoir by using the energy of the large pressure difference throttle, and the COP of the system can be increased by 9%-19%. This paper provides a theoretical basis for the design, development and optimization of CO2 refrigeration and air conditioning system with ejector.

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