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Title: Desiccant cooling using unglazed transpired solar collectors

Abstract

The use of unglazed solar collectors for desiccant regeneration in a solid desiccant cooling cycle was investigated because these collectors are lower in cost than conventional glazed flat-plate collectors. Using computer models, the performance of a desiccant cooling ventilation cycle integrated with either unglazed transpired collectors or conventional glazed flat-plate collectors was obtained. We found that the thermal performance of the unglazed system was lower than the thermal performance of the glazed system because the unglazed system could not take advantage of the heat of adsorption released during the dehumidification process. For a 3-ton cooling system, although the area required for the unglazed collector was 69% more than that required for the glazed collector, the cost of the unglazed collector array was 44% less than the cost of the glazed collector array. The simple payback period of the unglazed system was half of the payback period of the glazed collector when compared to an equivalent gas-fired system. Although the use of unglazed transpired collectors makes economic sense, some practical considerations may limit their use in desiccant regeneration. 8 refs.

Authors:
 [1];  [2]
  1. National Renewable Energy Lab., Golden, CO (United States)
  2. Stanford Univ., CA (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab., Golden, CO (United States); Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10148627
Report Number(s):
NREL/TP-432-4827; CONF-920678-6
ON: DE92010568
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Conference
Resource Relation:
Conference: SOLAR `92: American Solar Energy Society (ASES) annual conference,Cocoa Beach, FL (United States),15-18 Jun 1992; Other Information: PBD: May 1992
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; UNGLAZED SOLAR COLLECTORS; PERFORMANCE; DESICCANTS; COOLING; BUILDINGS; COOLING SYSTEMS; USES; INSOLATION; ENERGY EFFICIENCY; EMISSIVITY; COEFFICIENT OF PERFORMANCE; UNGLAZED TRANSPIRED SOLAR COLLECTORS; SOLAR; DESICCANT COOLING; 141000; 320106; 320107; SOLAR COLLECTORS AND CONCENTRATORS; BUILDING EQUIPMENT; BUILDING SYSTEMS

Citation Formats

Pesaran, A A, and Wipke, K. Desiccant cooling using unglazed transpired solar collectors. United States: N. p., 1992. Web.
Pesaran, A A, & Wipke, K. Desiccant cooling using unglazed transpired solar collectors. United States.
Pesaran, A A, and Wipke, K. Fri . "Desiccant cooling using unglazed transpired solar collectors". United States. https://www.osti.gov/servlets/purl/10148627.
@article{osti_10148627,
title = {Desiccant cooling using unglazed transpired solar collectors},
author = {Pesaran, A A and Wipke, K},
abstractNote = {The use of unglazed solar collectors for desiccant regeneration in a solid desiccant cooling cycle was investigated because these collectors are lower in cost than conventional glazed flat-plate collectors. Using computer models, the performance of a desiccant cooling ventilation cycle integrated with either unglazed transpired collectors or conventional glazed flat-plate collectors was obtained. We found that the thermal performance of the unglazed system was lower than the thermal performance of the glazed system because the unglazed system could not take advantage of the heat of adsorption released during the dehumidification process. For a 3-ton cooling system, although the area required for the unglazed collector was 69% more than that required for the glazed collector, the cost of the unglazed collector array was 44% less than the cost of the glazed collector array. The simple payback period of the unglazed system was half of the payback period of the glazed collector when compared to an equivalent gas-fired system. Although the use of unglazed transpired collectors makes economic sense, some practical considerations may limit their use in desiccant regeneration. 8 refs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {5}
}

Conference:
Other availability
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