Performances of a heat exchanger and pilot boiler for the development of a condensing gas boiler

被引：46
|
作者：
Lee, Seungro [1 ]
Kum, Sung-Min [2 ]
Lee, Chang-Eon [1 ]
机构：
[1] Inha Univ, Dept Mech Engn, Inchon 402751, South Korea
[2] Halla Univ, Sch Mech & Automot Engn, Wonju 220712, South Korea
来源：
ENERGY | 2011年 / 36卷 / 07期
关键词：
Condensing boiler; Heat exchanger; Pilot boiler; NO(x) and CO emissions; HELICAL BAFFLES; FLAMES;
D O I：
10.1016/j.energy.2011.05.018
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this research, design factors for a heat exchanger and boiler were investigated using a simplified model of a heat exchanger and pilot condensing boiler, respectively. Specifications of each heat exchanger component (e.g., upper heat exchanger (UHE) and lower heat exchanger (LHE): coil heat exchanger (CHE); baffles) were investigated using a model apparatus, and the comprehensive performance of the pilot gas boiler was examined experimentally. The heating efficiency of the boiler developed was about 90% when using the optimal designed heat exchangers. Compared to a conventional Bunsen-type boiler, the heating efficiency was improved about 10%. Additionally, NO(x), and CO emissions were about 30 ppm and 160 ppm, respectively, based on a 0% O(2) basis at an equivalence ratio of 0.70, which is an appropriate operating condition. However, the pollutant emission of the boiler developed is satisfactory considering the emission performance of a condensing boiler, even though CO emission must be reduced. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3945 / 3951
页数：7
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