Abstract

Ocean thermal energy conversion (OTEC) is a process in which the thermal gradient in ocean waters is used to evaporate and condense a working fluid and thereby extract useful work. Most studies of OTEC systems have focused on the economics and steady state behavior of this alternative energy conversion method. In this paper, one subsystem of the OTEC process is modelled in full transient, non-linear detail. Non-linearities occur due to the two-phase boiling process and the enthalpy-temperature thermophysics of the working fluid. The distributed nature of the system occurs due to the continuous change of percent gas in the boiler as the working fluid moves from the entrance (all liquid) to exit (all or nearly all gas). A numerical solution technique is proposed based on discretization. The evaporator considered is of the cross-flow type using propane as the working fluid, however the technique is valid for any channel configuration and working fluid provided that vertical flow exists in the working fluid. The model is used for transient studies in a wide range of working states.

Original languageEnglish (US)
StatePublished - Jan 1 2017
EventIEEE Power Eng Soc Summer Meet, Conf Pap - Portland, OR, USA
Duration: Jul 26 1981Jul 31 1981

Other

OtherIEEE Power Eng Soc Summer Meet, Conf Pap
CityPortland, OR, USA
Period7/26/817/31/81

Fingerprint

Thermal energy
Boilers
Ocean thermal energy conversion
Fluids
Evaporators
Gases
Energy conversion
Propane
Thermal gradients
Boiling liquids
Enthalpy
Economics
Liquids
Water
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Heydt, G. T., & Chapman, M. C. (2017). TRANSIENT MODELLING OF AN OCEAN THERMAL ENERGY CONVERTER BOILER.. Paper presented at IEEE Power Eng Soc Summer Meet, Conf Pap, Portland, OR, USA, .

TRANSIENT MODELLING OF AN OCEAN THERMAL ENERGY CONVERTER BOILER. / Heydt, G. T.; Chapman, M. C.

2017. Paper presented at IEEE Power Eng Soc Summer Meet, Conf Pap, Portland, OR, USA, .

Research output: Contribution to conferencePaper

Heydt, GT & Chapman, MC 2017, 'TRANSIENT MODELLING OF AN OCEAN THERMAL ENERGY CONVERTER BOILER.' Paper presented at IEEE Power Eng Soc Summer Meet, Conf Pap, Portland, OR, USA, 7/26/81 - 7/31/81, .
Heydt GT, Chapman MC. TRANSIENT MODELLING OF AN OCEAN THERMAL ENERGY CONVERTER BOILER.. 2017. Paper presented at IEEE Power Eng Soc Summer Meet, Conf Pap, Portland, OR, USA, .
Heydt, G. T. ; Chapman, M. C. / TRANSIENT MODELLING OF AN OCEAN THERMAL ENERGY CONVERTER BOILER. Paper presented at IEEE Power Eng Soc Summer Meet, Conf Pap, Portland, OR, USA, .
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