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Sample selection, Worksheets - sample selection #1 – Bally Refrigerated Boxes BVC Generation C – Direct Drive Air-Cooled – Vertical Air User Manual

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WORKSHEETS - SAMPLE SELECTION #1

Preliminary Data Given:
1. Evaporating temp = -20

o

F

2. Condensing temp = 105

o

F

3. Compressor capacity = 300,000 Btuh
4. Design ambient = 90

o

F

Use WORKSHEET - SINGLE CIRCUIT (P 26) to complete selection of condenser

Above selection using condenser model BVC1A23067 ensures condensing temperature will be at 105

o

F or below during

design ambient conditions. See SAMPLE SELECTION # 2 for multiple circuit selections.

1. SYSTEM DATA REQUIREMENTS

EVAP TEMP =

o

F COND TEMP=

o

F

COMPR. CAPACITY=

Btuh / 1000 =

MBH

COND. DESIGN AMBIENT TEMP=

(AT )

o

F

TD=

(Cond. Temp. - Ambient Temp)

COMPRESSOR TYPE=

OPEN

HERMETIC (Refrigerant cooled)

REFRIGERANT= R

REF. FACTOR=

(see P. 2)

ALTITUDE = AT SEA LEVEL or

FEET ALT. FACTOR=

(See P.2)

2. THR (Total Heat of Rejection) CALCULATION

COMPR. CAPACITY (MBH) X

HR f

X

ALT f

X

REF f

= THR (MBH)

X

X

X

=

3. CONDENSER MODEL SELECTION

For the model selected
record the THR PER 1

o

F TD value =

(B) (see P. 2)

4. ACTUAL CONDENSING TEMP CALCULATION

THR (from sec. 2)

/ value (B)

= ATD (actual Temperature Difference)

/

=

To find the Actual Condensing Temp. (ACT) just add the Actual Temperature Difference (ATD)
to the design Ambient Temperature (AT).

ATD

+

AT

=

ACT

+

=

o

F

JOB REF:

COND. MODEL #

TC 1500

-20

105

300,000

300

90

15

22

1

1

300

1.55

1

465

BVC1A23067

32.165

465

32.165

14.5

O

F

14.5

90

104.5

1