chilled water pump design

[afeef]

compliments
any body know the basic equation for desiding the flow rate of the chilled water pump with respect of the size of evaporator in tons
thanks

[Mahmoud]

Dear Afif,,

afif the flow rate of a chilled water system is related to the tonnage, first you have to transform the tonnage to KW, i.e. 1 Ton = 3.41 KW, then you can apply this formula:

Q= m x Cp x DT

Q: Capaciy in KW
m: Flow rate (Kg/sec)
Cp: Specific Heat (For Water 4.18 KW/Kg.K)
Dt: Delta T (entering - leaving chiller water temp)

then u'll get your flow rate man ..

[Peter_1]

http://www.engineeringtoolbox.com/ch...er-39_955.html

[Vincent Yu]

Dear Afif,,

afif the flow rate of a chilled water system is related to the tonnage, first you have to transform the tonnage to KW, i.e. 1 Ton = 3.41 KW, then you can apply this formula:

Q= m x Cp x DT

Q: Capaciy in KW
m: Flow rate (Kg/sec)
Cp: Specific Heat (For Water 4.18 KW/Kg.K)
Dt: Delta T (entering - leaving chiller water temp)

then u'll get your flow rate man ..

1 ton = 12000 Btu/hr = 3.5168528421 KW

[frank]

Specific heat of water = 4.19kj/kg.K

kj/s = kw

[botrous]

Hi guys


Afeef take care man , if you are using glycol or other antifreezing agent the specific heat of the blend changes .

Best regards