Chimney Fundamentals and Venting
Principles (烟囱基础与通风原理)
1. What is the primary purpose of a chimney?
A) Decorative enhancement of a home
B) Structural support for the roof
C) Removal of combustion byproducts from a structure
D) Increasing the heating efficiency of an appliance
Answer: C. 烟囱的基本功能是安全地将燃烧气体、烟雾和颗粒物排出建筑物，以保护
室内空气质量并防止火灾危险。
2. According to venting principles, which factor has the greatest effect on flow?
A) Size of venting system passageway
B) Type of fuel used
C) Condition of the flue lining
D) Number of appliances connected
Answer: A. 流动最受气流通道横截面积的控制；较小的通道会增加阻力并减少流动。
3. Draft is defined as:
A) The volume of air entering a fireplace
B) The pressure difference between the inside and outside of the venting system
C) The temperature of the flue gases
D) The height of the chimney
Answer: B. 抽力（draft）是导致烟气上升并排出烟囱的压力差。烟囱内较热、密度较
低的气体产生较低压力，从而将燃烧空气吸入设备。
4. Two major factors that affect draft are:
A) Chimney color and roofing material
B) Temperature differential and chimney height
C) Flue diameter and cap type
D) Wind direction only
Answer: B. 抽力主要由温度差（室内外温差）和烟囱高度驱动。
5. By what unit is draft typically measured for venting systems?
A) Inches of water column
,B) Inches of mercury
C) Pascals (Pa)
D) Millimeters of water
Answer: A. 抽力是压力差，通常使用校准为英寸水柱（inches of water column）的压力
计测量，该单位对通风系统中遇到的小压力差足够敏感。
6. The combustion process is referred to as the:
A) Fire triangle
B) Fire pyramid
C) Square fire theory
D) Fire tetrahedron
Answer: D. 燃烧过程被称为火四面体（fire tetrahedron），包含燃料、氧气、热量和链
式反应四个要素。
7. Ideal location for chimney venting systems is:
A) Outside the building envelope
B) Inside the building envelope
C) Behind the chimney
D) On an exterior wall
Answer: B. 理想的烟囱通风系统位置是在建筑围护结构内部（inside the building
envelope），以保持烟气温度并改善抽力。
8. Chimney downdrafts are accelerated in which of the following conditions?
A) Warmer weather
B) Higher humidity in the home
C) Lower humidity in the home
D) Higher barometric pressure in the home
Answer: A. 烟囱倒灌（downdrafts）在较温暖的天气条件下会加速。
9. Most fireplace system odors occur in:
A) Colder months
B) Higher altitudes
C) Larger chimneys
D) Summer months
Answer: D. 大多数壁炉系统异味发生在夏季月份（summer months），因为室内外温差
小，抽力减弱。
, 10. What is the function of an exterior termination hood?
A) To prevent backdrafts and keep out weather and pests
B) To increase airflow
C) To filter lint
D) To heat the exhaust air
Answer: A. 外部终端罩允许废气排出，同时防止倒灌、雨水和动物进入。
Section 2: Creosote Formation and Combustion Byproducts (杂酚油形成与燃烧副产物)
11. Creosote is best described as:
A) A corrosive acid that damages masonry
B) A combustible byproduct of incomplete combustion of wood
C) A type of soot found only in gas appliances
D) Moisture condensation within the flue
Answer: B. 杂酚油（creosote）是木材不完全燃烧产生的可燃副产物。当燃烧木材产生
的挥发性气体在较冷的烟道表面冷凝时形成，高度易燃，是烟囱火灾的主要原因。
12. What condition most significantly increases creosote buildup in a chimney?
A) High flue gas temperatures
B) Proper draft conditions
C) Burning unseasoned (wet) wood
D) Installation of an insulated flue liner
Answer: C. 潮湿的木材燃烧温度较低，产生更多烟雾和不完全燃烧。较冷的烟气更容
易冷凝，导致杂酚油快速积聚。
13. Which of the following is a factor leading to greater creosote accumulation?
A) Higher smoke density
B) Better insulated chimneys
C) Smaller flues
D) Smaller fuel loads
Answer: A. 更高的烟雾密度（higher smoke density）是导致更多杂酚油积聚的因素。
14. Which combination of conditions is most associated with the formation of glazed
creosote?
A) Slow smoldering fire; too many elbows; improperly sized vent
B) Fast, hot fire; straight flue
Principles (烟囱基础与通风原理)
1. What is the primary purpose of a chimney?
A) Decorative enhancement of a home
B) Structural support for the roof
C) Removal of combustion byproducts from a structure
D) Increasing the heating efficiency of an appliance
Answer: C. 烟囱的基本功能是安全地将燃烧气体、烟雾和颗粒物排出建筑物，以保护
室内空气质量并防止火灾危险。
2. According to venting principles, which factor has the greatest effect on flow?
A) Size of venting system passageway
B) Type of fuel used
C) Condition of the flue lining
D) Number of appliances connected
Answer: A. 流动最受气流通道横截面积的控制；较小的通道会增加阻力并减少流动。
3. Draft is defined as:
A) The volume of air entering a fireplace
B) The pressure difference between the inside and outside of the venting system
C) The temperature of the flue gases
D) The height of the chimney
Answer: B. 抽力（draft）是导致烟气上升并排出烟囱的压力差。烟囱内较热、密度较
低的气体产生较低压力，从而将燃烧空气吸入设备。
4. Two major factors that affect draft are:
A) Chimney color and roofing material
B) Temperature differential and chimney height
C) Flue diameter and cap type
D) Wind direction only
Answer: B. 抽力主要由温度差（室内外温差）和烟囱高度驱动。
5. By what unit is draft typically measured for venting systems?
A) Inches of water column
,B) Inches of mercury
C) Pascals (Pa)
D) Millimeters of water
Answer: A. 抽力是压力差，通常使用校准为英寸水柱（inches of water column）的压力
计测量，该单位对通风系统中遇到的小压力差足够敏感。
6. The combustion process is referred to as the:
A) Fire triangle
B) Fire pyramid
C) Square fire theory
D) Fire tetrahedron
Answer: D. 燃烧过程被称为火四面体（fire tetrahedron），包含燃料、氧气、热量和链
式反应四个要素。
7. Ideal location for chimney venting systems is:
A) Outside the building envelope
B) Inside the building envelope
C) Behind the chimney
D) On an exterior wall
Answer: B. 理想的烟囱通风系统位置是在建筑围护结构内部（inside the building
envelope），以保持烟气温度并改善抽力。
8. Chimney downdrafts are accelerated in which of the following conditions?
A) Warmer weather
B) Higher humidity in the home
C) Lower humidity in the home
D) Higher barometric pressure in the home
Answer: A. 烟囱倒灌（downdrafts）在较温暖的天气条件下会加速。
9. Most fireplace system odors occur in:
A) Colder months
B) Higher altitudes
C) Larger chimneys
D) Summer months
Answer: D. 大多数壁炉系统异味发生在夏季月份（summer months），因为室内外温差
小，抽力减弱。
, 10. What is the function of an exterior termination hood?
A) To prevent backdrafts and keep out weather and pests
B) To increase airflow
C) To filter lint
D) To heat the exhaust air
Answer: A. 外部终端罩允许废气排出，同时防止倒灌、雨水和动物进入。
Section 2: Creosote Formation and Combustion Byproducts (杂酚油形成与燃烧副产物)
11. Creosote is best described as:
A) A corrosive acid that damages masonry
B) A combustible byproduct of incomplete combustion of wood
C) A type of soot found only in gas appliances
D) Moisture condensation within the flue
Answer: B. 杂酚油（creosote）是木材不完全燃烧产生的可燃副产物。当燃烧木材产生
的挥发性气体在较冷的烟道表面冷凝时形成，高度易燃，是烟囱火灾的主要原因。
12. What condition most significantly increases creosote buildup in a chimney?
A) High flue gas temperatures
B) Proper draft conditions
C) Burning unseasoned (wet) wood
D) Installation of an insulated flue liner
Answer: C. 潮湿的木材燃烧温度较低，产生更多烟雾和不完全燃烧。较冷的烟气更容
易冷凝，导致杂酚油快速积聚。
13. Which of the following is a factor leading to greater creosote accumulation?
A) Higher smoke density
B) Better insulated chimneys
C) Smaller flues
D) Smaller fuel loads
Answer: A. 更高的烟雾密度（higher smoke density）是导致更多杂酚油积聚的因素。
14. Which combination of conditions is most associated with the formation of glazed
creosote?
A) Slow smoldering fire; too many elbows; improperly sized vent
B) Fast, hot fire; straight flue
