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Performance test of solar energy distillation system; Taiyonetsu riyo kaisui tansuika system no zosui seino shiken

Abstract

In order to develop a seawater desalination equipment utilizing solar heat, a performance test was performed on a three-stage solar heat vacuum distiller. The equipment can evaporate and condense water at low temperatures by reducing the pressure in a distilling section. Solar heat is collected by a heat collecting plate, by which water as the working fluid is evaporated and moved to a heat conducting section in an evaporation pipe in a state of steam. The steam is condensed in a low-temperature heat conducting pipe, the heat is released outside the heat conducting pipe, and seawater is evaporated under low pressure condition. The working fluid is circulated for repetitive use. Solar cells are used as a motive power source for a vacuum pump, hence the system is self-sustainable even if installed in a desert area and the like places. The construction is simple, highly durable, and easy in maintenance. The system has high water producing performance, uses no harmful substances whatsoever such as fluorocarbons, and is a friendly system to the global environment. Because of evaporation at low temperatures, heat loss to the surroundings and sensible heat due to temperature rise are small, and the system response is quick. The  More>>
Authors:
Kawahara, T; Toyoshima, Y; [1]  Narasaki, Y; Kamiya, I; [2]  Sato, H [3] 
  1. Keio University, Tokyo (Japan)
  2. Ebara Corp., Tokyo (Japan)
  3. Keio University, Tokyo (Japan). Faculty of Science and Technology
Publication Date:
Nov 25, 1997
Product Type:
Conference
Report Number:
ETDE/JP-98753622; CONF-9711143-
Reference Number:
SCA: 140909; PA: JP-98:0G1100; EDB-98:072579; SN: 98001948790
Resource Relation:
Conference: 1997 JSES/JWEA joint conference, Taiyo/furyoku energy koen, Aichi (Japan), 28-29 Nov 1997; Other Information: PBD: 25 Nov 1997; Related Information: Is Part Of Proceedings of JSES/JWEA Joint Conference (1997); PB: 454 p.; Taiyo/Furyoku energy koen ronbunshu (1997)
Subject:
14 SOLAR ENERGY; SOLAR STILLS; VACUUM DISTILLATION; DESALINATION PLANTS; WORKING FLUIDS; SOLAR HEATING SYSTEMS; PERFORMANCE TESTING; WATER; SOLAR COLLECTORS; HEAT TRANSFER; SEAWATER; SOLAR CELLS; THERMAL EFFICIENCY; WASTE HEAT UTILIZATION
OSTI ID:
625364
Research Organizations:
Japan Solar Energy Society, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE98753622; TRN: JN98G1100
Availability:
Available from Japan Solar Energy Society, 44-14, Yoyogi 2-chome, Shibuya-ku, Tokyo, (Japan); OSTI as DE98753622
Submitting Site:
NEDO
Size:
pp. 337-340
Announcement Date:
Jul 30, 1998

Citation Formats

Kawahara, T, Toyoshima, Y, Narasaki, Y, Kamiya, I, and Sato, H. Performance test of solar energy distillation system; Taiyonetsu riyo kaisui tansuika system no zosui seino shiken. Japan: N. p., 1997. Web.
Kawahara, T, Toyoshima, Y, Narasaki, Y, Kamiya, I, & Sato, H. Performance test of solar energy distillation system; Taiyonetsu riyo kaisui tansuika system no zosui seino shiken. Japan.
Kawahara, T, Toyoshima, Y, Narasaki, Y, Kamiya, I, and Sato, H. 1997. "Performance test of solar energy distillation system; Taiyonetsu riyo kaisui tansuika system no zosui seino shiken." Japan.
@misc{etde_625364,
title = {Performance test of solar energy distillation system; Taiyonetsu riyo kaisui tansuika system no zosui seino shiken}
author = {Kawahara, T, Toyoshima, Y, Narasaki, Y, Kamiya, I, and Sato, H}
abstractNote = {In order to develop a seawater desalination equipment utilizing solar heat, a performance test was performed on a three-stage solar heat vacuum distiller. The equipment can evaporate and condense water at low temperatures by reducing the pressure in a distilling section. Solar heat is collected by a heat collecting plate, by which water as the working fluid is evaporated and moved to a heat conducting section in an evaporation pipe in a state of steam. The steam is condensed in a low-temperature heat conducting pipe, the heat is released outside the heat conducting pipe, and seawater is evaporated under low pressure condition. The working fluid is circulated for repetitive use. Solar cells are used as a motive power source for a vacuum pump, hence the system is self-sustainable even if installed in a desert area and the like places. The construction is simple, highly durable, and easy in maintenance. The system has high water producing performance, uses no harmful substances whatsoever such as fluorocarbons, and is a friendly system to the global environment. Because of evaporation at low temperatures, heat loss to the surroundings and sensible heat due to temperature rise are small, and the system response is quick. The solar heat can be utilized more effectively as multiple effects. When a heat collecting plate of 7.76 m {sup 2} was used, maximum yield of 105.45 kg/day was obtained. The system`s distillation efficiency is higher than other types of solar heat utilizing distillers. 7 refs., 5 figs.}
place = {Japan}
year = {1997}
month = {Nov}
}