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Title: Feasibility study of transporting offshore OTEC-produced energy to shore by thermal media. Project 8980 third topical report, November 1976--July 1977

Abstract

Thermal-energy media were considered as both methods of storage and of transportation of OTEC-derived energy. Three types of thermal-energy storage media were considered for transport of OTEC energy: (1) sensible-heat media, which depend upon the heat capacity of the material for energy storage; (2) latent heat of fusion materials; and (3) reversible chemical reactions, which depend upon the change in energy content of certain compounds as chemical bonds are broken and other bonds are made. The characteristics of the storage medium, configuration, and materials, the system energy storage density, system thermal losses, heat-engine efficiency, and cycle temperature are specified. The unit capital costs of storage, transport ships, and heat engines are also discussed. The methodology for the economic evaluation of the thermal-energy transport system is also described. A description of the ship transport concept and the economic evaluation methodology and resultant costs for delivered thermal energy and electricity are given. Costs of onshore electricity using OTEC-produced thermal energy (8 cents to 34 cents kW hr) are high. Costs of thermal energy transportation are higher than current process heat costs, but are still comparable. The initial degradation of OTEC-produced shaftpower to heat followed by transmission and reconversion to electricity results inmore » low overall energy transmission efficiencies and high unit energy costs.« less

Authors:
; ;
Publication Date:
Research Org.:
Institute of Gas Technology, Chicago, IL (United States)
OSTI Identifier:
5228746
Report Number(s):
DSE/2426-19
DOE Contract Number:  
EX-76-C-01-2426
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 25 ENERGY STORAGE; OCEAN THERMAL POWER PLANTS; ENERGY TRANSPORT; THERMAL ENERGY STORAGE EQUIPMENT; ECONOMICS; FEASIBILITY STUDIES; COMPARATIVE EVALUATIONS; COST; HEAT ENGINES; LATENT HEAT STORAGE; OCEAN THERMAL ENERGY CONVERSION; SENSIBLE HEAT STORAGE; THERMOCHEMICAL HEAT STORAGE; CONVERSION; ENERGY CONVERSION; ENERGY STORAGE; ENGINES; EQUIPMENT; HEAT STORAGE; POWER PLANTS; SOLAR ENERGY CONVERSION; STORAGE; 140800* - Solar Energy- Ocean Energy Systems; 250600 - Energy Storage- Thermal; 142000 - Solar Energy- Heat Storage- (1980-)

Citation Formats

Yudow, B., Konopka, A., and Biederman, N. Feasibility study of transporting offshore OTEC-produced energy to shore by thermal media. Project 8980 third topical report, November 1976--July 1977. United States: N. p., 1977. Web. doi:10.2172/5228746.
Yudow, B., Konopka, A., & Biederman, N. Feasibility study of transporting offshore OTEC-produced energy to shore by thermal media. Project 8980 third topical report, November 1976--July 1977. United States. doi:10.2172/5228746.
Yudow, B., Konopka, A., and Biederman, N. Sat . "Feasibility study of transporting offshore OTEC-produced energy to shore by thermal media. Project 8980 third topical report, November 1976--July 1977". United States. doi:10.2172/5228746. https://www.osti.gov/servlets/purl/5228746.
@article{osti_5228746,
title = {Feasibility study of transporting offshore OTEC-produced energy to shore by thermal media. Project 8980 third topical report, November 1976--July 1977},
author = {Yudow, B. and Konopka, A. and Biederman, N.},
abstractNote = {Thermal-energy media were considered as both methods of storage and of transportation of OTEC-derived energy. Three types of thermal-energy storage media were considered for transport of OTEC energy: (1) sensible-heat media, which depend upon the heat capacity of the material for energy storage; (2) latent heat of fusion materials; and (3) reversible chemical reactions, which depend upon the change in energy content of certain compounds as chemical bonds are broken and other bonds are made. The characteristics of the storage medium, configuration, and materials, the system energy storage density, system thermal losses, heat-engine efficiency, and cycle temperature are specified. The unit capital costs of storage, transport ships, and heat engines are also discussed. The methodology for the economic evaluation of the thermal-energy transport system is also described. A description of the ship transport concept and the economic evaluation methodology and resultant costs for delivered thermal energy and electricity are given. Costs of onshore electricity using OTEC-produced thermal energy (8 cents to 34 cents kW hr) are high. Costs of thermal energy transportation are higher than current process heat costs, but are still comparable. The initial degradation of OTEC-produced shaftpower to heat followed by transmission and reconversion to electricity results in low overall energy transmission efficiencies and high unit energy costs.},
doi = {10.2172/5228746},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {10}
}