Performance of solar water heaters with narrow mantle heat exchangers

Y. C. Soo Too; G. L. Morrison; M. Behnia

doi:10.1016/j.solener.2008.08.011

Performance of solar water heaters with narrow mantle heat exchangers

Y. C. Soo Too, G. L. Morrison^*, M. Behnia

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

This paper evaluates the performance of narrow-gap vertical mantle heat exchangers with a two-pass arrangement for use in pumped-circulation solar water heaters. Both measured mantle side and tank side heat transfer correlations have been developed and implemented in a TRNSYS model of a complete solar water heater incorporating this type of heat exchanger. Predictions of the annual solar contribution for mantle-tank systems are compared to direct-coupled systems. The direct-coupled systems are found to provide slightly higher annual energy saving than mantle-tank systems for standard domestic hot water demand in Australia. However, the reduction in performance is outweighed by the benefit of freeze protection provided by incorporating a collector loop heat exchanger in the system.

Original language	English
Pages (from-to)	350-362
Number of pages	13
Journal	Solar Energy
Volume	83
Issue number	3
DOIs	https://doi.org/10.1016/j.solener.2008.08.011
Publication status	Published - Mar 2009
Externally published	Yes

Keywords

Mantle heat exchanger
Solar water heater
TRNSYS

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10.1016/j.solener.2008.08.011

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title = "Performance of solar water heaters with narrow mantle heat exchangers",

abstract = "This paper evaluates the performance of narrow-gap vertical mantle heat exchangers with a two-pass arrangement for use in pumped-circulation solar water heaters. Both measured mantle side and tank side heat transfer correlations have been developed and implemented in a TRNSYS model of a complete solar water heater incorporating this type of heat exchanger. Predictions of the annual solar contribution for mantle-tank systems are compared to direct-coupled systems. The direct-coupled systems are found to provide slightly higher annual energy saving than mantle-tank systems for standard domestic hot water demand in Australia. However, the reduction in performance is outweighed by the benefit of freeze protection provided by incorporating a collector loop heat exchanger in the system.",

keywords = "Mantle heat exchanger, Solar water heater, TRNSYS",

author = "{Soo Too}, {Y. C.} and Morrison, {G. L.} and M. Behnia",

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AU - Morrison, G. L.

AU - Behnia, M.

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N2 - This paper evaluates the performance of narrow-gap vertical mantle heat exchangers with a two-pass arrangement for use in pumped-circulation solar water heaters. Both measured mantle side and tank side heat transfer correlations have been developed and implemented in a TRNSYS model of a complete solar water heater incorporating this type of heat exchanger. Predictions of the annual solar contribution for mantle-tank systems are compared to direct-coupled systems. The direct-coupled systems are found to provide slightly higher annual energy saving than mantle-tank systems for standard domestic hot water demand in Australia. However, the reduction in performance is outweighed by the benefit of freeze protection provided by incorporating a collector loop heat exchanger in the system.

AB - This paper evaluates the performance of narrow-gap vertical mantle heat exchangers with a two-pass arrangement for use in pumped-circulation solar water heaters. Both measured mantle side and tank side heat transfer correlations have been developed and implemented in a TRNSYS model of a complete solar water heater incorporating this type of heat exchanger. Predictions of the annual solar contribution for mantle-tank systems are compared to direct-coupled systems. The direct-coupled systems are found to provide slightly higher annual energy saving than mantle-tank systems for standard domestic hot water demand in Australia. However, the reduction in performance is outweighed by the benefit of freeze protection provided by incorporating a collector loop heat exchanger in the system.

KW - Mantle heat exchanger

KW - Solar water heater

KW - TRNSYS

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DO - 10.1016/j.solener.2008.08.011

M3 - Article

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SN - 0038-092X

VL - 83

SP - 350

EP - 362

JO - Solar Energy

JF - Solar Energy

IS - 3

ER -

Performance of solar water heaters with narrow mantle heat exchangers

Abstract

Keywords

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