Development of Low Cost Total Energy Exchange Devices for Reducing Building Energy Consumption

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The primary goal of this program is to develop a commercially viable enthalpy exchangers that exhibits performance comparable to state-of-the-art exchangers, meets flammability test standards, supports no biological growth, maintains mechanical integrity for a 10 year life (typical of competitive warrantees) and exhibits a total media raw material cost of approximately 1/5 of that of the competition. The first three program tasks were devoted to: (1) gathering background information on competitors and their methods of manufacturing; (2) establishing experimental and evaluation procedures for the program; (3) identifying potential desiccants, supports and binders to be tested; (4) preparing matrix combinations on ... continued below

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Belding, William; Collier, R. & Worek, William April 22, 2002.

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Description

The primary goal of this program is to develop a commercially viable enthalpy exchangers that exhibits performance comparable to state-of-the-art exchangers, meets flammability test standards, supports no biological growth, maintains mechanical integrity for a 10 year life (typical of competitive warrantees) and exhibits a total media raw material cost of approximately 1/5 of that of the competition. The first three program tasks were devoted to: (1) gathering background information on competitors and their methods of manufacturing; (2) establishing experimental and evaluation procedures for the program; (3) identifying potential desiccants, supports and binders to be tested; (4) preparing matrix combinations on a laboratory scale; (5) testing component combinations for equilibrium moisture uptakes at different relative humidities (isotherms) and dynamic moisture adsorption rates; (6) using media adsorption properties to models to predict exchanger performance; (7) estimating ease of manufacture and finished wheel costs; and (8) calculating raw material, wheel and cassette costs based on the best media formulations. Since the rotary enthalpy exchangers have high rotational speeds, uptake rate is at least as important as equilibrium moisture uptake. Therefore, a procedure and apparatus were developed to determine adsorption rate so that the Lewis number (the ratio of mass transfer resistance to heat transfer resistance) could be calculated. The calculated values for different media materials could then be used for performance model predictions. Based on the results achieved, three systems have been selected as enthalpy exchange media candidates for the next phase of work. All materials are expected to give at least the same level of sensible and latent performance as the competitive media.

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  • Report No.: None
  • Grant Number: FC26-00NT40992
  • DOI: 10.2172/939577 | External Link
  • Office of Scientific & Technical Information Report Number: 939577
  • Archival Resource Key: ark:/67531/metadc895719

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • April 22, 2002

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 8, 2016, 3:37 p.m.

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Belding, William; Collier, R. & Worek, William. Development of Low Cost Total Energy Exchange Devices for Reducing Building Energy Consumption, report, April 22, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc895719/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.