Many northern state energy codes require economizers for chilled water systems. Waterside economizers per ASHRAE 90.1-2013 and 2010 shall provide up to 100% of the …
Water-Side Economizers Part 2: State Energy Codes
Water-Side economizers are here to stay in the northern climates. Using the cooling tower to create cold water and transferring that temperature to the chilled water …
Free Cooling Heat Exchangers (Part One)
The ASHRAE young engineers heard about the free cooling system in the recent tour of the DTE Vantage Dearborn Central Energy Plant. The free cooling …
Heat Exchanger Types and Where to Use Them: Part 4 – Variable Flow Applications
When should you choose to use a gasketed plate, brazed plate, or shell and tube heat exchanger? Often in HVAC, plumbing, or industrial systems any …
Heat Exchanger Types and Where to Use Them: Part 3 – Close Temperature Applications
When should you choose to use a gasketed plate, brazed plate, or shell and tube heat exchanger? Often in HVAC, plumbing, or industrial systems any …
Heat Exchanger Types and Where to Use Them: Part 2 – Plate Style
Plate heat exchangers have been around for over one hundred years but only made their debut in HVAC systems in the last 50 years. They …
Heat Exchanger Types and Where to Use Them: Part 1 – Shell & Tube
There are a variety of unfired liquid to liquid and steam to liquid heat exchangers for the engineer to choose from. The Gasketed Plate, Brazed …
Shell & Tube Heat Exchanger – Leaking Gaskets
Shell and tube heat exchanger leaks can be very frustrating. Occasionally we receive a call from a frustrated contractor who swears he installed the heat …
Domestic Water Heaters: Plate Heat Exchangers and Dual Return Condensing Boilers
Gas-fired storage type domestic water heaters are the norm in commercial and institutional buildings. Walk into any mechanical room of a larger complex and you …
Identifying Common Heat Exchangers
The video Identifying Common Heat Exchangers was a project for our intern program this past year at R.L. Deppmann Company. Ted Proctor, an intern for our …