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How to calculate water demand in a chilled water system? What formulas do we need to use?

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Question added by Jibin Joseph , Mechanical Engineer/ Estimator , Red Sea Housing Services
Date Posted: 2016/11/10
SAMUEL CANAVERAL
by SAMUEL CANAVERAL , Material Controller , Samsung Engineering And Construction

 rule of thumb is 2.4 for each 1 TR .

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

Q=M X CP X DELTA T

M is mass flow rate   [kg/s]

CP Specific Heat   kJ/(kg*K]

DELTA T for change in temperature [K]

 

Mohammad Elias  Kako
by Mohammad Elias Kako , Mechanical Engineer / Supervision , Al Otaishan Consulting Engineers

Q = m' x Cp x DeltaT

Q = load

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

Q = m' x Cp x DeltaT

Q = load

m' = mass flow rate or volume flow rate which is 1 l/s = 1kg/s almost in case of water

DeltaT = temp difference between water in and water out temperature Normally keep it 5.5 - 6.5 Deg C

 

Thats the basic formula but always keep some factor of safety

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