Design Considerations
- Consider the type of HVAC system that best suits the school’s needs, taking into account factors such as climate, building size, and occupancy.
- Ensure that the HVAC system is designed to maintain good indoor air quality and thermal comfort.
- Consider the potential for natural ventilation and operable windows to supplement HVAC systems.
HVAC Equipment Selection
- Select equipment that meets the school’s specific needs, such as central air handling units, unit ventilators, and heat pumps.
- Consider the advantages and disadvantages of different equipment options, including cost, energy efficiency, and maintenance requirements.
- Ensure that equipment is properly sized for the school’s needs.
Ventilation and Air Quality
Air Filtration and Cleaning
- Consider the importance of air filtration and cleaning in maintaining good indoor air quality.
- Select filters that are designed to capture airborne particulates and gases.
- Consider the use of energy recovery ventilation equipment to improve air quality.
Ventilation Controls and Moisture Control
- Ensure that ventilation controls are in place to regulate the amount of outdoor air brought into the building.
- Consider the use of demand-controlled ventilation systems to vary the quantity of outside air ventilation in response to occupancy.
- Ensure that moisture control measures are in place to prevent condensation and mold growth.
Air Distribution and Duct Insulation
- Consider the importance of proper air distribution and duct insulation in maintaining good indoor air quality.
- Ensure that ducts are properly insulated and sealed to prevent moisture and contaminants from entering the system.
- Consider the use of vertical displacement ventilation or thermal displacement ventilation systems.
Operations and Maintenance
Commissioning
- Ensure that the HVAC system is properly commissioned to ensure that it is operating as designed.
- Consider the use of building commissioning as a quality assurance program to ensure that the building is constructed and performs as designed.
- Ensure that maintenance personnel are properly trained to maintain the HVAC system.
References and Resources
- ASHRAE Standard 62.1-2010: Ventilation for Acceptable Indoor Air Quality
- ASHRAE Standard 90.1-2010: Energy Standard for Buildings Except Low-Rise Residential Buildings
- National Institute for Occupational Safety and Health (NIOSH) Indoor Air Quality Resources
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