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Industrial / Industrial Chilled Water system configuration
« on: March 01, 2021, 03:34:39 PM »
Hi I'm looking for any recommendations on possible reconfiguration of our plant chilled water system. We are currently using a 50HP Taco 1038B 4"x5"x13.3" impeller 750gpm pump with a redundant (identical) pump plumbed in parallel as a backup. The system is "semi" closed-loop with a pit that the pumps draw out of, into the chiller(s), to the plant, and then drains back to the pit. I say semi because there is a small portion of the plant that drains to the city sewer, so we do have a makeup supply controlled by a float in the pit. We generally are pumping 400-500gpm with the entire plant running and the pump running full speed, 24/7. The way we regulate pressure to approx. 60psi is with a bypass to the pit, located shortly downstream from the pumps, controlled by a manual butterfly valve. We are also planning to add filtration between the pumps and the chillers.
Can you recommend a configuration with CSV's that would allow the backup pump to operate automatically as needed, as well as eliminate the need to adjust the bypass valve to regulate pressure. I'm not sure if we can get away from using the bypass completely, since our chiller needs a minimum amount of load (high enough temp and flow) to operate.
Thank you
Can you recommend a configuration with CSV's that would allow the backup pump to operate automatically as needed, as well as eliminate the need to adjust the bypass valve to regulate pressure. I'm not sure if we can get away from using the bypass completely, since our chiller needs a minimum amount of load (high enough temp and flow) to operate.
Thank you