Articles

Airflow diagram representative of ventilation requirements for water treatment plant example project. Each space shows ventilation/exhaust/cooling CFM requirements. Courtesy: CDM Smith

HVAC/R and Mechanical

Case study: Balancing systems in a Georgia water plant

Figure 2: Indoor unit return ductwork with outside air connection via ducted louver. Courtesy: CDM Smith

HVAC/R and Mechanical

Optimizing ventilation, pressurization and air quality with ASHRAE 62.1

Figure 5: Laminar flow diffusers over a surgical table in an operating room. Courtesy: WSP

How ventilation and indoor air quality protect against infection

Figure 6: Arlington County Water Pollution Control Plant preliminary treatment building odor control duct to gravity thickeners. Courtesy: CDM Smith

Case study: Upgrading a ventilation system to determine how to treat air

Figure 5: Pump station with alarms and sensor devices. Courtesy: CDM Smith

Fire and Life Safety

How to navigate NFPA 820 for wastewater treatment plants

Figure 3: Pump station with a makeup air unit and two exhaust fans. Courtesy: CDM Smith

Fire and Life Safety

How to set up a basic step-by-step WWTP calculation

Figure 4: Equipment located in a heat transfer vault in a larger distribution system. Courtesy: CDM Smith

Boilers, Chillers

Consulting-Specifying Engineer most read articles: June 2025

Figure 3: Water-source heat pump installation at 1 Java Street. This heat pump serves one of the residential apartments within the building. Courtesy: CDM Smith

Case study: How New York City’s largest residential building achieved efficiency

Figure 1: An energy recovery ventilator (ERV) unit installed at an administration building in Massachusetts. The ERV exchanges heat between the outdoor air and the ventilation from the occupied spaces. It operates in air-side economizer mode when the outdoor air temperature is below 60°F and modulates the outside air damper and return air damper to maintain the mixed air temperature setpoint. Courtesy: CDM Smith

HVAC/R and Mechanical

The role of energy efficiency in decarbonization

Electrical and Power

Your questions answered: Energy, power demands for EV charging