Ocean thermal energy conversion gas desorption studies. Volume 1. Design of experiments. [Open-cycle power systems]

Technical Report · Wed Oct 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/6818033· OSTI ID:6818033

Golshani, A.; Chen, F. C.

Seawater deaeration is a process affecting almost all proposed Ocean Thermal Energy Conversion (OTEC) open-cycle power systems. If the noncondensable dissolved air is not removed from a power system, it will accumulate in thecondenser, reduce the effectiveness of condensation, and result in deterioration of system performance. A gas desorption study is being conducted at Oak Ridge National Laboratory (ORNL) with the goal of mitigating these effects; this study is designed to investigate the vacuum deaeration process for low-temperature OTEC conditions where conventional steam stripping deaeration may not be applicable. The first in a series describing the ORNL studies, this report (1) considers the design of experiments and discusses theories of gas desorption, (2) reviews previous relevant studies, (3) describes the design of a gas desorption test loop, and (4) presents the test plan for achieving program objectives. Results of the first series of verification tests and the uncertainties encountered are also discussed. A packed column was employed in these verification tests and test data generally behaved as in previous similar studies. Results expressed as the height of transfer unit (HTU) can be correlated with the liquid flow rate by HTU = 4.93L/sup 0/ /sup 25/. End effects were appreciable for the vacuum deaeration system, and a correlation of them to applied vacuum pressure was derived.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6818033
• Report Number(s): ORNL/TM-7438/V1
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140800* -- Solar Energy-- Ocean Energy Systems
AIR
CONDENSERS
CONVERSION
DATA
DEGASSING
DESORPTION
ENERGY CONVERSION
EVAPORATION
EXPERIMENTAL DATA
FLASHING
FLUIDS
GASES
GRAPHS
HYDROGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
OCEAN THERMAL ENERGY CONVERSION
OCEAN THERMAL POWER PLANTS
OPEN-CYCLE SYSTEMS
OXYGEN COMPOUNDS
PACKINGS
PERFORMANCE TESTING
PHASE TRANSFORMATIONS
POWER PLANTS
SEAWATER
SOLAR ENERGY CONVERSION
SOLAR POWER PLANTS
TABLES
TEST FACILITIES
TESTING
THERMAL POWER PLANTS
WATER