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Frontiers in Energy

ISSN 2095-1701

ISSN 2095-1698(Online)

CN 11-6017/TK

邮发代号 80-972

2019 Impact Factor: 2.657

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Frontiers in Energy  2019, Vol. 13 Issue (2): 339-353   https://doi.org/10.1007/s11708-018-0596-5
  本期目录
某商用建筑中锅炉分段的热力性能和部分负荷率特性研究
LEE Da Young1, SEO Byeong Mo2, YOON Yeo Beom2, HONG Sung Hyup1, CHOI Jong Min3, LEE Kwang Ho4()
1. 韩巴国立大学研究生院，大田305-719，韩国
2. 北卡罗来纳州立大学设计学院，罗利，北卡罗来纳州27695-7701，美国
3. 韩巴国立大学机械工程系，大田305-719，韩国
4. 韩巴国立大学建筑工程系，大田305-719，韩国
Heating energy performance and part load ratio characteristics of boiler staging in an office building
Da Young LEE1, Byeong Mo SEO2, Yeo Beom YOON2, Sung Hyup HONG1, Jong Min CHOI3, Kwang Ho LEE4()
1. Graduate School, Hanbat National University, Daejeon 305-719, South Korea
2. College of Design, North Carolina State University, Raleigh, NC 27695-7701, USA
3. Department of Mechanical Engineering, Hanbat National University, Daejeon 305-719, South Korea
4. Department of Architectural Engineering, Hanbat National University, Daejeon 305-719, South Korea
 全文: PDF(1048 KB)   HTML
摘要:

商业建筑在韩国建筑能源总量中占有较大比重。因此，目前已开展了一系列针对办公建筑中锅炉的热能相关研究。然而，上述研究中缺少对其部分负荷率特性和燃气能耗模式的分析。本文研究了传统变风量系统中燃气锅炉的部分负荷率和运行特性，并比较分析了不同锅炉分段方案的气耗量。结果发现，锅炉的运行时间，热负荷和能耗集中分布在部分负荷率为0~40%范围内，所以，能耗量主要受低部分负荷状态下锅炉效率的影响。此外，研究发现，顺序式锅炉分段方案可节省气耗量约7%。在年供热节能方面，3:7比例分段顺序控制策略可将锅炉效率最大化。
Abstract：

Commercial buildings account for significant portions of the total building energy in South Korea and thus a variety of research on the boiler operation related to heating energy in office buildings has been carried out thus far. However, most of the researches have been conducted on the boiler itself, i.e., the part load ratio characteristics and the corresponding gas energy consumption patterns are not analyzed in the existing studies. In this study, the part load ratio and the operating characteristics of gas boiler have been analyzed within an office building equipped with the conventional variable air volume system. In addition, the gas consumption among different boiler staging schemes has been comparatively analyzed. As a result, significant portions of total operating hours, heating load and energy consumption has been found to be in a part load ratio range of 0 through 40% and thus energy consumption is significantly affected by boiler efficiency at low part load conditions. This suggests that boiler operation at the part load is an important factor in commercial buildings. In addition, utilizing sequential boiler staging scheme can save a gas usage of about 7%. For annual heating energy saving, applying the sequential control boiler with a 3:7 proportion staging is considered to be the optimal control algorithm for maximum efficiency of boilers.
Key words： EnergyPlus    boiler    part load ratio    gas consumption    office building    boiler staging
收稿日期: 2018-05-05      出版日期: 2019-07-04
通讯作者: LEE Kwang Ho     E-mail: kwhlee@hanbat.ac.kr
Corresponding Author(s): Kwang Ho LEE   
 引用本文:   
LEE Da Young, SEO Byeong Mo, YOON Yeo Beom, HONG Sung Hyup, CHOI Jong Min, LEE Kwang Ho. 某商用建筑中锅炉分段的热力性能和部分负荷率特性研究[J]. Frontiers in Energy, 2019, 13(2): 339-353.
Da Young LEE, Byeong Mo SEO, Yeo Beom YOON, Sung Hyup HONG, Jong Min CHOI, Kwang Ho LEE. Heating energy performance and part load ratio characteristics of boiler staging in an office building. Front. Energy, 2019, 13(2): 339-353.
 链接本文:  
https://academic.hep.com.cn/fie/CN/10.1007/s11708-018-0596-5
https://academic.hep.com.cn/fie/CN/Y2019/V13/I2/339
Fig.1  
Fig.2  
Representative day Terminal unit Boiler capacity/W Heating set-point/°C
17th April, 23rd January Conventional VAV box with reheat 290000 21
Tab.1  
Fig.3  
Fig.4  
Field Input
Minimum part load ratio 0
Maximum part load ratio 1
Optimum part load ratio 1
Tab.2  
Fig.5  
Field Equipment list Capacity/kW Operating priority Load distribution algorithm
1st 2nd
Case_1 Boiler_1 290 Boiler_1 *
Case_2 Boiler_1, Boiler_2 145 145 Boiler_1, Boiler_2 Uniform
Case_3 Boiler_1, Boiler_2 87 203 Boiler_1, Boiler_2 Uniform
Case_4 Boiler_1, Boiler_2 87 203 Boiler_1 Boiler_2 Sequential
Case_5 Boiler_1, Boiler_2 203 87 Boiler_1 Boiler_2 Sequential
Tab.3  
Fig.6  
Coefficient entry Input data
a 0.3822
b 2.2013
c -2.8237
d 1.3021
Tab.4  
Fig.7  
Fig.8  
Fig.9  
Fig.10  
Fig.11  
Fig.12  
Case Total gas consumption/kWh Boiler_1 gas consumption/kWh Boiler_2 gas consumption/kWh
Case_1 517.9 517.9 ─
Case_2 517.9 258.9 258.9
Case_3 508.2 225.7 282.5
Case_4 355.8 355.8 0
Case_5 470.3 470.3 0
Tab.5  
Case Total gas consumption/kWh Boiler_1 gas consumption/kWh Boiler_2 gas consumption/kWh
Case_1 1707.6 1707.6? ─
Case_2 1707.6 853.8 853.8
Case_3 1696.0 706.5 989.6
Case_4 1464.8 992.7 472.1
Case_5 1582.4 1494.4? ?88.0
Tab.6  
Fig.13  
Part load ratio/% Case_1 Case_2 Case_3 Case_4 Case_5
Boiler_1 Boiler_1 Boiler_2 Boiler_1 Boiler_2 Boiler_1 Boiler_2 Boiler_1 Boiler_2
0≤PLR<10 747 747 747 474 1,035 251 123 550 47
10≤PLR<20 596 596 596 421 527 223 63 485 17
20≤PLR<30 251 251 251 366 175 210 40 353 7
30≤PLR<40 116 116 116 224 61 211 10 174 6
Total 1710 1710 1710 1485 1798 895 236 1562 77
Tab.7  
Fig.14  
Part load ratio/% Case_1 Case_2 Case_3 Case_4 Case_5
Boiler_1 Boiler_1 Boiler_2 Boiler_1 Boiler_2 Boiler_1 Boiler_2 Boiler_1 Boiler_2
40≤PLR<50 78 78 78 109 11 195 10 105 5
50≤PLR<60 16 16 16 84 19 171 17 73 3
60≤PLR<70 20 20 20 64 10 127 10 43 3
70≤PLR<80 16 16 16 37 12 97 12 19 5
80≤PLR<90 12 12 12 22 5 64 5 12 0
90≤PLR≤100 10 10 10 61 7 313 8 48 4
Total 152 152 152 377 64 967 62 300 20
Tab.8  
Part load ratio/% Case_1 Case_2 Case_3
Boiler_1 Boiler_1 Boiler_2 Boiler_1 Boiler_2
Operating hours/h Amount of consumed gas/MWh Operating hours/h Amount of consumed gas/MWh Operating hours/h Amount of consumed gas/MWh Operating hours/h Amount of consumed gas/MWh Operating hours/h Amount of consumed gas/MWh
0≤PLR<10 747 25.4 747 12.7 747 12.7 474 12.7 1,035 12.7
10≤PLR<20 596 49.2 596 24.6 596 24.6 421 24.6 527 24.6
20≤PLR<30 251 29.2 251 14.6 251 14.6 366 14.6 175 14.6
30≤PLR<40 116 17 116 8.5 116 8.5 7.35 8.5 61 8.5
40≤PLR<50 78 14 78 7 78 7 109 7 11 7
50≤PLR<60 16 3.4 16 1.7 16 1.7 84 1.7 19 1.7
60≤PLR<70 20 5 20 2.5 20 2.5 64 2.5 10 2.5
70≤PLR<80 16 4.6 16 2.3 16 2.3 37 2.3 12 2.3
80≤PLR<90 12 3.8 12 1.9 12 1.9 22 1.9 5 1.9
90≤PLR≤100 10 3.6 10 1.8 10 1.8 61 1.8 7 1.8
Total 1,862 155.2 1,862 77.6 1,862 77.6 1,645 77.6 1,862 77.6
Tab.9  
Part load ratio/% Case_4 Case_5
Boiler_1 Boiler_2 Boiler_1 Boiler_2
Operating hours/h Amount of consumed gas/MWh Operating hours/h Amount of consumed gas/MWh Operating hours/h Amount of consumed gas/MWh Operating hours/h Amount of consumed gas/MWh
0≤PLR<10 251 1.8 123 1.8 550 1.8 47 1.8
10≤PLR<20 223 4 63 4 485 4 17 4
20≤PLR<30 210 5.5 40 5.5 353 5.5 7 5.5
30≤PLR<40 211 6.9 10 6.9 174 6.9 6 6.9
40≤PLR<50 195 8.7 10 8.7 105 8.7 5 8.7
50≤PLR<60 171 8.8 17 8.8 73 8.8 3 8.8
60≤PLR<70 127 9.5 10 9.5 43 9.5 3 9.5
70≤PLR<80 97 7.7 12 7.7 19 7.7 5 7.7
80≤PLR<90 64 7.6 5 7.6 12 7.6 0 7.6
90≤PLR≤100 313 38.1 8 38.1 48 38.1 4 38.1
Total 1,862 98.6 298 98.6 1,862 98.6 97 98.6
Tab.10  
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