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Solar energy for steam generation in Brazil

Journal Article:

Abstract

Steam generation is a solar energy application that has not been frequently studied in Brazil, even though for example, about 10% of the national primary energy demand is utilized for processing heat generation in the range of 100 to 125/sup 0/C. On the other hand, substitution of automotive gasoline by ethanol, for instance, has received much greater attention even though primary energy demand for process heat generation in the range of 100 to 125/sup 0/C is of the same order of magnitude than for total automotive gasoline production. Generation of low-temperature steam is analyzed in this article using distributed systems of solar collectors. Main results of daily performance simulation of single flat-plate collectors and concentrating collectors are presented for 20/sup 0/S latitude, equinox, in clear days. Flat plate collectors considered are of the aluminum roll-bond absorber type, selective surface single or double glazing. Considering feedwater at 20/sup 0/C, saturated steam at 120/sup 0/C and an annual solar utilization factor of 50%, a total collector area of about 3,000 m/sup 2/ is necessary for the 10 ton/day plant, without energy storage. A fuel-oil back-up system is employed to complement the solar steam production, when necessary. Preliminary economic evaluation indicates that, although  More>>
Publication Date:
May 01, 1979
Product Type:
Journal Article
Reference Number:
EPA-05-005142; EDB-79-104029
Resource Relation:
Journal Name: Interciencia; (Venezuela); Journal Volume: 4:3
Subject:
14 SOLAR ENERGY; 29 ENERGY PLANNING, POLICY AND ECONOMY; BRAZIL; SOLAR ENERGY; SOLAR PROCESS HEAT; STEAM GENERATION; ECONOMICS; FEASIBILITY STUDIES; SOLAR COLLECTORS; ENERGY; ENERGY SOURCES; HEAT; LATIN AMERICA; PROCESS HEAT; RENEWABLE ENERGY SOURCES; SOUTH AMERICA; 140905*; 299001 - Energy Planning & Policy- Solar- (1989-); 140703 - Solar Thermal Power Systems- Distributed Collector
OSTI ID:
6113894
Country of Origin:
Venezuela
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ITRCD
Submitting Site:
TIC
Size:
Pages: 140-147
Announcement Date:

Journal Article:

Citation Formats

De Carvalho, Jr, A V, Orlando, A DeF, and Magnoli, D. Solar energy for steam generation in Brazil. Venezuela: N. p., 1979. Web.
De Carvalho, Jr, A V, Orlando, A DeF, & Magnoli, D. Solar energy for steam generation in Brazil. Venezuela.
De Carvalho, Jr, A V, Orlando, A DeF, and Magnoli, D. 1979. "Solar energy for steam generation in Brazil." Venezuela.
@misc{etde_6113894,
title = {Solar energy for steam generation in Brazil}
author = {De Carvalho, Jr, A V, Orlando, A DeF, and Magnoli, D}
abstractNote = {Steam generation is a solar energy application that has not been frequently studied in Brazil, even though for example, about 10% of the national primary energy demand is utilized for processing heat generation in the range of 100 to 125/sup 0/C. On the other hand, substitution of automotive gasoline by ethanol, for instance, has received much greater attention even though primary energy demand for process heat generation in the range of 100 to 125/sup 0/C is of the same order of magnitude than for total automotive gasoline production. Generation of low-temperature steam is analyzed in this article using distributed systems of solar collectors. Main results of daily performance simulation of single flat-plate collectors and concentrating collectors are presented for 20/sup 0/S latitude, equinox, in clear days. Flat plate collectors considered are of the aluminum roll-bond absorber type, selective surface single or double glazing. Considering feedwater at 20/sup 0/C, saturated steam at 120/sup 0/C and an annual solar utilization factor of 50%, a total collector area of about 3,000 m/sup 2/ is necessary for the 10 ton/day plant, without energy storage. A fuel-oil back-up system is employed to complement the solar steam production, when necessary. Preliminary economic evaluation indicates that, although the case-study shows today a long payback period relative to subsidized fuel oil in the domestic market (over 20 years in the city of Rio de Janeiro), solar steam systems may be feasible in the medium term due to projected increase of fuel oil price in Brazil.}
journal = {Interciencia; (Venezuela)}
volume = {4:3}
journal type = {AC}
place = {Venezuela}
year = {1979}
month = {May}
}