Case Study: Pump 1 [Public Facility] Inverterization of Chilled and Hot Water Pump

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last updated：Oct 06, 2014

八紘テクノ

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Perform inverter operation to drive the pump with high efficiency and save electricity.

To adjust the flow, the valve that was partially closed was opened, and by regulating the flow with an inverter, significant power savings were achieved. The inverter operates at the optimal and minimum frequency based on signals from pressure sensors and flow sensors, driving the pump with high efficiency for energy conservation. To prevent the loss of flow that cannot be reduced by the inverter during low demand periods, bypass valve control is also used. 【Features】 ○ Control Method: The rotation speed of the pump motor is controlled by the inverter using pressure sensors and flow sensors. ○ Target Equipment: Absorption chiller/heater 　　　　　 Secondary chilled/heated water pumps (11.0 kW) × 2 units For more details, please contact us or download the catalog.

Related Link - http://www.hakko-techno.co.jp/case/installation/pu…

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【Results of Implementation】 ○ Annual energy savings of 62,679 kWh → Approximately 64% reduction in electricity consumption 【Implementation Points】 ○ To adjust the flow rate, the valve that was partially closed was opened, and significant power savings were achieved by adjusting the flow rate with an inverter. ○ The inverter operates at the optimal and minimal frequency based on signals from pressure sensors and flow rate, driving the pump with high efficiency for energy savings. ○ To allow for flow that cannot be reduced by the inverter during low demand periods, control of a bypass valve is used in conjunction. ● For more details, please contact us or download the catalog.