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in the Green Procurement Compilation

Learn & Plan Topics

  • Energy & Atmosphere

    Buildings and facilities rely on the operation of mechanical systems and electrical systems to maintain a high level of indoor environmental qual...

  • Indoor Environmental Quality (IEQ)

    Indoor Environmental Quality (IEQ) is most simply described as the conditions inside the building. It includes air quality, but also access to da...

  • Sustainable Sites

    Choosing a building's site and managing that site during construction are important to ensure a project's sustainability. Environmentally responsibl...

Air Handling Unit (AHU)

An air handling unit uses blowers to circulate conditioned air and accepts returned air to be conditioned again. In addition to blowers, AHUs contain heat exchangers, which transfer heat between cool and warm materials. For example, when a space needs air conditioning, warm air from the space is returned to the AHU. This warm air is cooled by circulating a chilled liquid into the heat exchanger. This newly cooled air can then be blown back into the space.

Whole Building Systems

  • Water - Green Tips

    Use alternate non-potable water sources such as gray water, rainwater, air handling unit condensate, cooling tower blow-down or discharge from other...

  • HVAC - System Specific Maintenance

    The Federal Energy Management Program’s guide Operations & Maintenance Best Practices has detailed guidance and checklists on the maintena...

  • Water - Mechanical Engineer

    Mechanical engineers should be brought to the integrative process table to give insight as to how to successfully integrate the HVAC components into...

  • HVAC - System Adjustments

    The most frequently cited measures/opportunities are: Adjust reset and set-back temperatures and temperature settings – Settings are often adjust...

Materials

  • Overhead Air Distribution

    Overhead air distribution is the most common approach to mixing and delivering conditioned air to a space, though the delivery method can vary from ...
  • Under Floor Air Distribution

    Under floor air distribution systems supply conditioned air to an occupied space via diffusers in a raised floor. This system effectively maintains...
  • Thermostat

    A thermostat is a component of the HVAC controls system. Detection and communication of the space temperature is a critical component of overall HV...
  • Perimeter Units

    Known by a number of commons terms such as "induction units," "window units," and "floor units," perimeter HVAC units bring conditioned air out to t...
  • Air Hand Drying

    Air-based hand drying utilizes high speed air and/or warm air to remove or evaporate water from a user’s hands. The high-speed air systems are sl...