Analyzing the Environmental Effects of Conventional and Condensing Combi Boilers Using Natural Gas

Year 2020, Volume: 23 Issue: 4, 1277 - 1284, 01.12.2020

Halil İbrahim Variyenli Ataollah Khanları

https://doi.org/10.2339/politeknik.592313

Abstract

Generally, space heating and hot water providing are
done by combi boilers. Different types of combi boilers are available. In the
recent years condensing combi boilers have been introduced that have high
energy efficiency in comparison with conventional types. In the condensing type
combi boilers, an additional heat exchanger is utilized to recover energy form
flue gas. In this study the effects of combi boiler type on pollutant gas
emissions have been experimentally analyzed. In this regard three different
combi boiler including conventional, condensing and full condensing type combi
boilers have been selected in the experiments. In addition, the experiments
have been done in different temperatures to investigate the temperature effect.
The obtained results showed that in all temperatures using condensing and full
condensing combi boilers reduced CO₂, NO and NO_x gas
emissions considerably. Also, by analyzing combi boilers emissions in different
working temperatures, it can be said that in low temperatures CO₂
emission reduction in condensing combi is higher than its reduction in high
temperatures in comparison with conventional one.

Keywords

Combi boiler, heat recovery, condensing, natural gas, pollutants gas emissions

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