Volume 39 Issue 8
Aug.  2020
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Shuo Wang, Shijun Wu, Canjun Yang. The pressure compensation technology of deep-sea sampling based on the real gas state equation[J]. Acta Oceanologica Sinica, 2020, 39(8): 88-95. doi: 10.1007/s13131-020-1637-6
Citation: Shuo Wang, Shijun Wu, Canjun Yang. The pressure compensation technology of deep-sea sampling based on the real gas state equation[J]. Acta Oceanologica Sinica, 2020, 39(8): 88-95. doi: 10.1007/s13131-020-1637-6

The pressure compensation technology of deep-sea sampling based on the real gas state equation

doi: 10.1007/s13131-020-1637-6
Funds:  The National Key Research and Development Program of China under contract Nos 2018YFC0310600 and 2016YFC0300500.
More Information
  • Corresponding author: E-mail: bluewater@zju.edu.cn
  • Received Date: 2019-07-12
  • Accepted Date: 2019-12-18
  • Available Online: 2020-12-28
  • Publish Date: 2020-08-25
  • Compressed gas is usually used for the pressure compensation of the deep-sea pressure-maintaining sampler. The pressure and volume of the recovered fluid sample are highly related to the precharged gas. To better understand the behavior of the gas under high pressure, we present a new real gas state equation based on the compression factor Z which was derived from experimental data. Then theoretical calculation method of the pressure and volume of the sample was introduced based on this empirical gas state equation. Finally, the proposed calculation method was well verified by the high-pressure vessel experiment of the sampler under 115 MPa.
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