The waterside economizer is normally a gasketed plate heat exchanger. There is chilled water on one side and cooling tower water on the other side …
Waterside Economizers Part 5: Heat Exchanger Location
The waterside economizer is normally a gasketed plate heat exchanger. The cooling tower water supply temperature to this heat exchanger varies with the weather. The …
Water Side Economizers Part 4: Chilled Water Temperatures
Waterside economizers per ASHRAE 90.1-2013 and 2010 shall provide up to 100% of the expected system cooling load at outdoor air temperatures of 50°F dry …
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 …
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 …
Cooling Tower Spring Startup Tips
The weather is warming, and our attention turns away from heating and toward system air conditioning. To protect the cooling tower pumps, we offer a …
Net Positive Suction Head (NPSH) Part 5 of 5 – Good Cooling Tower Pump Piping Practice
Happy New Year 2021! I pray that we all have a healthy year and see the return of normal lifestyles. This final blog in this …
Net Positive Suction Head (NPSH) Part 4 of 5 – Gauge Readings
The cooling tower pump calculations are completed, the project is bid, the Bell & Gossett pumps scheduled are awarded and installed. There is a noise …
Net Positive Suction Head (NPSH) Part 3 of 5 –NPSH Available
The available cooling tower pump NPSH or net positive suction head is a function of the pan elevation, friction, and temperature. Sometimes the combination of …