Tag: HVAC

Figure 5: California’s duck curve is getting deeper. This shows California Independent System Operator lowest net load day each spring (March through May 2015 to 2023) in gigawatts. Courtesy: U.S. Energy Information Administration

Codes and Standards

Designing energy-efficient buildings with a focus on decarbonization

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

Optimizing ventilation, pressurization and air quality with ASHRAE 62.1

Figure 2: The illustrated schematic provides a generic representation of the typical primary hydronic loop distribution to rack-mounted coolant distribution units (CDUs). It is advisable that the piping material and connection accessories be chosen according to the CDU manufacturer's requirements for each project. Additional engineering efforts may be necessary to determine how to circulate the water and control the temperature and that may require changing the piping arrangements per project. Courtesy: Dynaten

HVAC/R and Mechanical

Consulting-Specifying Engineer most read articles: May 2025

2025 Consulting-Specifying Engineer Product of the Year winners announced

Figure 5: Piping manifold secondary distribution piping to geothermal bore field. Courtesy: CDM Smith

Case study: How one city is using energy-efficient geothermal systems

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

Boilers, Chillers

Why and how to use chiller systems to maintain building temperatures

2025 40 Under 40: Chelseyann Bipat

2025 40 Under 40: Chelseyann Bipat, PE, CEM, CBCP, GBE, 30