York YCAL0041 User Manual download pdf (Page 12)

YORK INTERNATIONAL

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

O PD

c. Cooler Pressure Drop = 6.5 x 1.258 or 8.17

A YCAL0045 is suitable.

kWkWxkW 8.499.55

1.56

GPM

FRang

Tons

M 120

)50(

kWCompressorx

tons

.41)77.41(

.33

Range

Tonfacto

rFGalTons

min/

/.°×

)(7.88

1.260.34

MGPM =

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 79 80

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York YCAL0041 User Manual Page 12

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