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Which one is used for a decoupler line in the chiller system, motorized or normal butterfly valve with open position?

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Question added by Naveen Vallekadavil , Mechanical Engineer , AECOM Middleeast
Date Posted: 2016/09/24
Farid Khan
by Farid Khan , Supervisor , JW Marriott Hotel

Normally butturfly valve is fixed with flow meter connected to BMS to monitor the direction of flow, & primary flow should not exeed the secondry flow in gpm.

LINUMON KUNJU KUNJU
by LINUMON KUNJU KUNJU , Mechanical Engineer , COWI

Normal butterfly valve with open position

chetan sharma
by chetan sharma , Senior project engineer , trinity engineering services

Decoupler can be both directional either to or fro and it is motorised butterfly valve.

lakshman bangaru
by lakshman bangaru , Hvac Bim Modeler , Pace Architecture Engineering + Planning

Where air and water are brought into direct contact with each other in order to reduce the water's temperature. As this occurs, a small volume of water is evaporated, reducing the temperature of the water being circulated through the chiller to control flow as per water circulation normal or motorized isolation valve is used.

Haji zubair
by Haji zubair , Electrical Technician , Maaden Phosphate Company.

A cooling tower is a specialized heat exchanger in which air and water are brought into direct contact with each other in order to reduce the water's temperature. As this occurs, a small volume of water is evaporated, reducing the temperature of the water being circulated through the tower.

Martin Thomas vaz
by Martin Thomas vaz , Senior Mechanical Engineer- Supervision consultant , ALKASHAF INTERNATIONAL-DESIGN AND ENGINEERING CONSULTANCY

Motorized, the BMS expert can explain the controls behind the motorized valve.

Jose  Ballesteros
by Jose Ballesteros , Commissioning Engineer , Energo Projekt Entel

Motorised butterfly valve as it has bi-directional function.

joshy thomas kunnel
by joshy thomas kunnel , operator , emaar

butterfly valve ,it should be open position.we can adjust flow rate with secondary pumps.

Muhammad Arsalan Siddiqui
by Muhammad Arsalan Siddiqui , Associate Director (MEP) , JLL

this is like a bypass line to control flow between primary and secondary pump line

Normally primary pump are constant speed and secondary variable so extra flow goes as by pass through decoupler

 

SHADI YASEEN HAMEEDAT
by SHADI YASEEN HAMEEDAT , Construction Manager , SIGNALS CONTROL

Decoupler Line in the chiller system has Bi-directional motorised butterfly valve.

Irshad Majgaonkar
by Irshad Majgaonkar , Design Engineer Mechanical (HVAC) , Technip E&C

Decoupler has Bi-directional motorised butterfly valve.

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