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 …
Net Positive Suction Head (NPSH) Part 2 of 5 –Safety Factors
The Hydraulic Institute (HI) is a global authority on pumps and pumping systems. Think of them as the ASHRAE of pump design and testing. HI, …
Net Positive Suction Head (NPSH) Part 1 of 5 – Terms and Definitions
One of the most misunderstood concepts in pump selection for hydronic design is the net positive suction head or NPSH. Problems with NPSH can spell …
Energy Savings Using Variable Speed Water Pumps on Constant Flow Condensers
When using multiple parallel condensers with constant speed pumps, the flow rate at part load may be excessive and problematic. Our last blog on this …
Multiple Condenser Cooling Tower Pumps – “Solutions for Excessive Flow”
The design and flow balance in systems with multiple parallel condensers is straight forward. We should expect no issues at full capacity. What happens when …
Balancing Constant Speed Cooling Tower Pumps with Multiple Condensers
It is important to check the single pump operation when balancing parallel pumps for multiple constant speed cooling tower pumps. The condensers and pumps are …
Selecting Constant Speed Cooling Tower Pumps & Balance Valves with Multiple Condensers
It is important to check the single pump operation when selecting parallel pumps for multiple constant speed cooling tower pumps. In the last R. L. …