01767nmc a2200241 4500 20260520005820.0 260224s xxu CD I249 1 0013788 Thermal efficiency enhancement on gas fired water heater using titanium heat exchanger for latent heat recovery 12/09/06 ; 22/07/2003 6 p. Disponible en CD en formato PDF Transcripción del abstract original del autor: Thermal efficiency of gas fired water heater can be improved by latent heat recovery from the flue gas. However, it is usually accompanied with corrosion problem of heat exchanger caused by strong acid condensate. In this study, the heat transfer experiments of natural gas (13A) fired water heater has been performed using enhanced titanium tubes, which has excellent corrosion resistance as secondary heat exchanger for latent heat recovery. The parametric studies were conducted for mass flow rate and outlet temperature of hot water, respectively. Tube arrangements of heat exchanger including inline and staggered configurations were investigated. The thermal efficiency was evaluated based on the net calorific value at maximum rated output. As a result, the thermal efficiency of gas fired water heater with latent heat recovery heat exchanger was about 10% higher than that of the conventional instantaneous water heater. CONGTP Hwang, Kyudae 22246 Hyun, Sunggun 22247 International Gas Union, IGU 13105 World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo) 22029 Hyun, Sunggun 22247 International Gas Union, IGU 13105 149638 149638 0 0 0 0 217457 BAAB BAAB CD I249 1 0013788 2026-03-04 200025631 0 CD I249 1 0013788 200025631 2026-03-04 16:38:48 2026-03-04 ARCHIVO