LEED AP Building Design and Construction (BD+C) Practice Exam

How many control parameters must be included in the cooling tower water analysis?

1. Three

2. Four

3. Five

4. Six

The correct answer is: Five

The inclusion of five control parameters in the cooling tower water analysis is essential for ensuring optimal performance and water quality management. These parameters are crucial for assessing the efficiency of cooling towers and their operation within a sustainable building framework. Typically, the five control parameters include: 1. **Conductivity**: This measures the water's ability to conduct electricity, which relates to the total dissolved solids. Monitoring conductivity helps assess water concentration levels and ensures that they remain within safe limits. 2. **pH Level**: The pH of the water indicates how acidic or basic it is, influencing corrosion and scaling within the cooling system. Maintaining the proper pH balance is critical to prevent damage to the components of the cooling tower. 3. **Biological Activity**: This parameter evaluates the presence of microbial life in the water, including algae and bacteria, which can lead to biofouling. Regular testing helps manage biological growth to maintain hygiene and efficiency. 4. **Chlorine Residual**: This assesses the amount of chlorine available in the water, which is essential for disinfection. Adequate chlorine levels help minimize microbial growth and improve the overall quality of the water. 5. **Hardness**: This measures the concentration of calcium and