Performance enhancement on gas fired water heater using titanium heat exchanger for latent heat recovery

Kyudae Hwang, Sunggun Hyun, Kiyoshi Saito, Sunao Kawai, Katsuyuki Inagaki, Ryuji Ozawa

Research output: Contribution to journalArticlepeer-review

Abstract

The performance of natural gas (13A) fired water heater with titanium heat exchanger for latent heat recovery was evaluated. In the terms of thermal efficiency, the performance of the water heater was evaluated based on the net calorific value at maximum rated output. The thermal efficiency of gas fired water heater with latent heat recovery heat exchanger was ≈ 10% higher than that of the conventional instantaneous water heater. The overall heat conductance of the heat exchanger with staggered tube rows was more efficient than that of the inline tube rows.

Original languageEnglish
Pages (from-to)62-67
Number of pages6
JournalJournal of the Japan Institute of Energy
Volume84
Issue number1
DOIs
Publication statusPublished - 2005 Jan

Keywords

  • Gas fired water heater
  • Latent heat recovery
  • Thermal efficiency
  • Titanium heat exchanger

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology

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