Performance of falling film heat exchangers for solar water heaters

Yen Chean SooToo*, Graham Morrison, Masud Behnia

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

The characteristics of a falling film heat exchanger for use on the collector loop heat exchanger in a pumped solar water heater have been assessed, and a TRNSYS model has been developed for evaluating long-term performance. The falling film heat exchanger is based on a conventional gas storage water heater tank with the gas combustion tube converted to a water /water heat exchanger. The annual performance of a falling film solar water heater with in-tank electric boosting was found to be lower than a direct-coupled system. The winter performance of a series gas-boosted system out-performs an in-tank electric boosted system due to improved tank thermal stratification.

Original languageEnglish
Title of host publicationISES Solar World Congress 2007, ISES 2007
Place of PublicationBreisgau, German
Publisher International Solar Energy Society
Pages2013-2017
Number of pages5
Volume3
ISBN (Print)9781622765447
Publication statusPublished - 2007
Externally publishedYes
EventInternational Solar Energy Society Solar World Congress 2007, ISES 2007 - Beijing, China
Duration: 18 Sep 200721 Sep 2007

Other

OtherInternational Solar Energy Society Solar World Congress 2007, ISES 2007
CountryChina
CityBeijing
Period18/09/0721/09/07

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