R. L. Deppmann Company receives calls about the size and the length of the common pipe just about every week. Gil Carlson, ASHRAE fellow and …
Water Side Economizers Part 3: Cooling Tower Temperatures
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 …
Tour of the DTE Vantage Dearborn Central Energy Plant
I recently enjoyed an ASHRAE young engineers (YEAH!) tour to a DTE cogeneration facility. This appears, to me, to be a state-of-the-art facility which provides …
Heat Pump Water Heaters: Chilled Water Source (Part 13)
Many heat pumps used in Ohio and Michigan are water source for comfort heating and cooling. Today, we want to look at the opportunity to …
Heat Pump Water Heaters: Example Apartment Building Costs (Part 10)
Your client is interested in a commercial R-744 refrigerant heat pump water heater solution. The example system I used in this blog is an apartment …
Domestic Hot Water: Pathogen Mitigation
Hot water plumbing system design is a hot topic. The building plumbing design/engineering team is faced with a variety of new products, standards, and codes. …
AHRI Includes Plate Heat Exchanger Testing – FAQs
The ASHRAE Energy Standard 90.1 and the 2015 Michigan Energy Code require the AHRI plate heat exchangers used in heating and cooling applications be tested …