COOLING COIL SELECTION SHEET - CHW
Customer : DATE
A.H.U. NO. 1
Latent ( L ) 0 BTU / hr. Outside Air ( OA ) 1730 CFM TOTAL TR = 27.00
Sensible ( S ) 0 BTU / hr. Dehumidified Air ( DA ) 6040 CFM CFM / TR = 224
Total ( T ) 0 BTU / hr. Return Air ( RA ) 4310 CFM B.P. FACTOR= 0.03
Outside (OT) 110 o
F DB 75 o
F WB Water Qty 71.60 USGPM Coil Vel. Limit 500 FPM
Inside ( IT ) 73 o
F DB 55 % RH Water in 45 o
F A.D.P. 52.3 F
o
Coil Lvg (LT ) 53.24 o
F DB o
F WB Water out 54 o
F Contact Factor 0.97
Mixture Temp. (AIR ) : 83.60 o
F DB
1730 F.A. X 110 O.T. + 4310 RA X 73 I.T.
6040 D.A.
LMTD = GTD - LTD 16.70 Ht Lt
LN (GTD / LTD) Coil Size : 5/8 " 30 58
Air Entering 83.60 Coil Lvg 53.24 Coil Size : 1/2" 25 70
Water Out 54 Water In 45 No .Of Coils :
GTD 29.60 LTD 8.24
Actual area each sq. ft.
Coil Area ( CA ) = 6040 D.A. = 12.08 sq. ft. Full half Quarter quarter
Half
500 Air . Vel. No. of Circuits : 20.0 10.0 5.0 per coil
20 10 5
Water Vel. = G.P.M. 71.6 X 1.1 = 3.282 fps Velocity : 3.28 fps
24 No .of circuits
Sensible Heat Ratio ( SHR ) 0.88
Air Entering SH 34 TH 38.18
Air Leaving SH 25 TH 27.92
Difference SH 9 TH 10.26
U.A. Factor (From Catalogue ) : 259.05
No. of Rows = 27 ( TR ) X 12000
LMTD 16.70 X C.A. 12.08 X U.A. 259.05
= 5.25 DIVIDING BY 1.18 FOR 12 FPI) 4.45
Selected = 6 Rows
Notes : For brine circulation apply correction factor for Coil Selected :
specific heat to water quantity. Size :
No. of Coils :
For 12 FPI divide No. of rows by 1.18
Connection on Left Hand Side / Right Hand Side
For 10 FPI, divide no of rows by 1.15
Header Size :
Side of Connection to be as seen while facing
coil from prefilter side Type of coil : DX / CH.W / BRINE
REMARKS :
Coil Size X Ht. X Length X Rows X Ckt X FPI X Type X Connection
1/2" 25 70 6 28 12 CH.W. LHS
DATE : PREPARED BY : RRG CHECKED BY :
COOLING COIL SELECTION SHEET - CHW
Customer : DATE
A.H.U. NO. 2
Latent ( L ) 0 BTU / hr. Outside Air ( OA ) 460 CFM TOTAL TR = 12.0
Sensible ( S ) 0 BTU / hr. Dehumidified Air ( DA ) 4460 CFM CFM / TR = 372
Total (T) 0 BTU / hr. Return Air ( RA ) 4000 CFM B.P. FACTOR= 0.03
Outside (OT) 110 o
F DB 75 o
F WB Water Qty 71.6 USGPM Coil Vel. Limit 500 FPM
Inside ( IT ) 73 o
F DB 55 % RH Water in 45 o
F A.D.P. 55.2 o
F
Coil Lvg (LT ) 55.85 o
F DB o
F WB Water out 54 o
F Contact Factor 0.97
Mixture Temp. (AIR ) : 76.82 o
F DB
460 F.A. X 110 O.T. + 4000 RA X 73 I.T.
4460 D.A.
LMTD = GTD - LTD 16.10 Ht Lt
LN (GTD / LTD) Coil Size : 5/8 " 36 36
Air Entering 76.82 Coil Lvg 55.85 Coil Size : 1/2" 24 54
Water Out 54 Water In 45 No .Of Coils :
GTD 22.82 LTD 10.85
Actual area each sq. ft.
Coil Area ( CA ) = 4460 D.A. = 8.92 sq. ft. Full half quarter
500 Air . Vel. No. of Circuits : 24.0 12.0 6.0 per coil
19.2 9.6 4.8
Water Vel. = G.P.M. 71.6 X 1.1 = 3.28 fps Velocity : 3.28 fps
24 No .of circuits
Sensible Heat Ratio ( SHR ) 0.88
Air Entering SH 34 TH 38.18
Air Leaving SH 25 TH 27.92
Difference SH 9 TH 10.26
U.A. Factor (From Catalogue ) : 259.05
No. of Rows = 12 ( TR ) X 12000
LMTD 16.10 X C.A. 8.92 X U.A. 259.05
= 3.28 DIVIDING BY 1.18 FOR 12 FPI) 2.78
Selected = 4 Rows
Notes : For brine circulation apply correction factor for Coil Selected :
specific heat to water quantity. Size :
No. of Coils :
For 12 FPI divide No. of rows by 1.18
Connection on Left Hand Side / Right Hand Side
For 10 FPI, divide no of rows by 1.15
Header Size :
Side of Connection to be as seen while facing
coil from prefilter side Type of coil : DX / CH.W / BRINE
REMARKS :
Coil Size X Ht. X Length X Rows X Ckt X FPI X Type X Connection
1/2" 24 54 4 28 12 CH.W. LHS
DATE : PREPARED BY : RRG CHECKED BY :
COOLING COIL SELECTION SHEET - CHW
Customer : DATE
A.H.U. NO. 1
Latent ( L ) 0 BTU / hr. Outside Air ( OA ) 1730 CFM TOTAL TR = 27.00
Sensible ( S ) 0 BTU / hr. Dehumidified Air ( DA ) 6040 CFM CFM / TR = 224
Total (T) 0 BTU / hr. Return Air ( RA ) 4310 CFM B.P. FACTOR= 0.03
Outside (OT) 110 o
F DB 75 o
F WB Water Qty 71.60 USGPM Coil Vel. Limit 500 FPM
Inside ( IT ) 73 o
F DB 55 % RH Water in 45 o
F A.D.P. 52.3 o
F
Coil Lvg (LT ) 53.24 o
F DB o
F WB Water out 54 o
F Contact Factor 0.97
Mixture Temp. (AIR ) : 83.60 o
F DB
1730 F.A. X 110 O.T. + 4310 RA X 73 I.T.
6040 D.A.
LMTD = GTD - LTD 16.70 Ht Lt
LN (GTD / LTD) Coil Size : 5/8 " 30 58
Air Entering 83.60 Coil Lvg 53.24 Coil Size : 1/2" 24 72
Water Out 54 Water In 45 No .Of Coils :
GTD 29.60 LTD 8.24
Actual area each sq. ft.
Coil Area ( CA ) = 6040 D.A. = 12.08 sq. ft. Full half Quarter quarter
Half
500 Air . Vel. No. of Circuits : 20.0 10.0 5.0 per coil
19.2 9.6 4.8
Water Vel. = G.P.M. 71.6 X 1.1 = 3.28 fps Velocity : 3.28 fps
24 No .of circuits
Sensible Heat Ratio ( SHR ) 0.88
Air Entering SH 34 TH 38.18
Air Leaving SH 25 TH 27.92
Difference SH 9 TH 10.26
U.A. Factor (From Catalogue ) : 259.05
No. of Rows = 27 (T)X 12000
LMTD 16.70 X C.A. 12.08 X U.A. 259.05
= 5.2535 DIVIDING BY 1.18 FOR 12 FPI) 4.45
Selected = 6 Rows
Notes : For brine circulation apply correction factor for Coil Selected :
specific heat to water quantity. Size :
No. of Coils :
For 12 FPI divide No. of rows by 1.18
Connection on Left Hand Side / Right Hand Side
For 10 FPI, divide no of rows by 1.15
Header Size :
Side of Connection to be as seen while facing
coil from prefilter side Type of coil : DX / CH.W / BRINE
REMARKS :
Coil Size X Ht. X Length X Rows X Ckt X FPI X Type X Connection
1/2" 24 72 6 28 12 CH.W. LHS
DATE : PREPARED BY : RRG CHECKED BY :
