York YCAL0041, Руководство пользователя

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YORK INTERNATIONAL
12
a. 56.1 Tons
b. 55.9 Compressor KW
c. 10.7 Unit EER
4. Calculate Compressor kW at 50 Tons:
5. Calculate GPM:
6. From page ____, read 6 ft of water cooler pressure
drop from GPM:
7. A YCAL0061 is suitable.
EXAMPLE - BRINE CHILLING
Example - Brine Chilling
1. Given: Provide a capacity of 34 tons cooling 30% by
weight Ethylene Glycol from 50 F to 40 F, 0.00025FF,
95 F air on the condenser, 60 Hz and 4000 ft. alti-
tude.
2. Determine:
a. Unit Size
b. KW Input
c. Ethylene Glycol GPM
d. Cooler Pressure Drop
3. See E.G. correction factors, for 30% by weight
E.G.
READ : 0.984 Tons Factor
0.997 Compr. KW factor
26.1 Gal,/ F/Tons Factor
4. See Performance Data Correction Factors for
0.00025 fouling factor and 4,000 ft. altitude.
READ : 0.975 Tons factor
1.012 kW factor
5. From RATINGS on page 16.
SELECT : YCAL0045 (English Units)
35.3 Tons
41.1 Compressor kW
6. Determine YCAL0045 brine cooling capacity and
Compressor kW requirement from pg 14:
a. TONS: = 35.3 x 0.984 x 0.975 = 33.87
b. Compr. KW = 41.1 x 0.997 x 1.012 = 41.77
7. Determine average full load Compressor kW at 34
tons
8. Determine E.G. GPM:
9. Determine Cooler Pressure Drop:
a. See E.G. correction factors for 30% by weight
E.G.
READ: 1.258 Pressure Drop factor
b. See page 14 at 88.7 GPM for YCAL0045
READ : 6.5_Water H
2
O PD
c. Cooler Pressure Drop = 6.5 x 1.258 or 8.17
A YCAL0045 is suitable.
kW kW x kW 8 . 49 9 . 55
1 . 56
50
= =
GPM
FRange
Tons
GPM 120
10
24 ) 50 (
=
°
×
=
kW Compressor x
tons
tons
93 . 41 ) 77 . 41 (
87 . 33
34
=
Range
Tonfactor F Gal Tons
GPM
min/ / . ° ×
=
) ( 7 . 88
10
1 . 26 0 . 34
GPM GPM =
×
=