When Southern California was blasted by record-breaking heat, the tenants of an LAX Airport Center office building were fortunate that the cooling tower that works in conjunction with the building’s chillers had just been replaced. So, rather than having to endure the sweltering heat, the tenants remained cool and comfortable.
Chlorinated polyvinyl chloride (CPVC) first made its way into the world of venting systems in the residential market. Recently, CPVC has been used to vent Category IV high-efficiency boilers. While it can cost up to 20 percent less than stainless steel, those specifying venting systems should consider other differences that may impact boiler efficiency and present potential safety hazards.
Today, designing, building, and operating have one common thread: energy efficiency. And it begins with a building’s HVAC system. There are many pieces that go into an energy-efficient HVAC system - especially for commercial buildings.
OK, you’ve exhausted all of the existing air from an interior space; now how do you replace it? You bring in makeup air from another source. For the purpose of an HVAC discussion, your source will be mechanical equipment — makeup air units.