Improving thermosyphon solar domestic hot water system model performance. Final report, March 1994--February 1995

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Data from an indoor solar simulator experimental performance test is used to develop a systematic calibration procedure for a computer model of a thermosyphoning, solar domestic hot water heating system with a tank-in-tank heat exchanger. Calibration is performed using an indoor test with a simulated solar collector to adjust heat transfer in the heat exchanger and heat transfer between adjacent layers of water in the storage tank. An outdoor test is used to calibrate the calculation of the friction drop in the closed collector loop. Additional indoor data with forced flow in the annulus of the heat exchanger leads to ... continued below

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135 p.

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Swift, T.N. September 1, 1996.

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Description

Data from an indoor solar simulator experimental performance test is used to develop a systematic calibration procedure for a computer model of a thermosyphoning, solar domestic hot water heating system with a tank-in-tank heat exchanger. Calibration is performed using an indoor test with a simulated solar collector to adjust heat transfer in the heat exchanger and heat transfer between adjacent layers of water in the storage tank. An outdoor test is used to calibrate the calculation of the friction drop in the closed collector loop. Additional indoor data with forced flow in the annulus of the heat exchanger leads to improved heat transfer correlations for the inside and outside regions of the tank-in-tank heat exchanger. The calibrated simulation model is compared to several additional outdoor tests both with and without auxiliary heating. Integrated draw energies are predicted with greater accuracy and draw temperature profiles match experimental results to a better degree. Auxiliary energy input predictions improve significantly. 63 figs., 29 tabs.

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135 p.

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OSTI as DE99002365

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  • Other Information: TH: Thesis (M.S.)

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  • Other: DE99002365
  • Report No.: DOE/GO/10093--T1
  • Grant Number: FC36-95GO10093
  • DOI: 10.2172/345031 | External Link
  • Office of Scientific & Technical Information Report Number: 345031
  • Archival Resource Key: ark:/67531/metadc682817

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Nov. 15, 2015, 5:17 p.m.

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Swift, T.N. Improving thermosyphon solar domestic hot water system model performance. Final report, March 1994--February 1995, report, September 1, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc682817/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.