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15

 

 

 

 

 

 

Specific 

Specific 

Latent 

Product

 

 

 

Storage Conditions

 

 

Highest 

Heat 

Heat 

Heat 

Loading

 

 

Storage 

Relative 

Approximate 

Freezing 

Above 

Below 

of 

Density

 

Commodity 

Temp. 

Humidity 

Storage 

Point 

Freezing 

Freezing 

Fusion 

Approx.

 

(Alphabetical Listing) 

ºF. 

Life* 

ºF. 

BTU/lb./F 

BTU/lb./F 

BTU/lb. 

lb./Cu. Ft.

Table 7

Storage requirements and properties of perishable products

 

Apples 

30 - 40 

90 

3 -8 months 

29.3 

0.87 

0.45 

121 

28

 

Apricots 

31 - 32 

90 

1 - 2 weeks 

30.1 

0.88 

0.46 

122 

30

 

Artichokes (Globe) 

31 - 32 

95 

2 weeks 

29.9 

0.87 

0.45 

120 

 

Asparagus 

32 - 36 

95 

2 -3 weeks 

30.9 

0.94 

0.48 

134 

25

 

Avocados 

45 - 55 

85 - 90 

2 -4 weeks 

31.5 

0.72 

0.40 

94 

19

 

Bananas 

55 - 65 

85 - 90 

— 

30.6 

0.80 

0.42 

108 

 

Beans (Green or  Snap) 

40 - 45 

90 - 95 

7 - 10 days 

30.7 

0.91 

0.47 

128 

14

 

  Lima 

32 - 40 

90 

1 week 

31.0 

0.73 

0.40 

94 

 

Beer, Keg 

35 - 40 

— 

3 - 8 weeks 

28.0 

0.92 

— 

129 

 

  Bottles, Cans 

35 - 40  

65 or below 

3 - 6 months 

28.0 

0.92 

— 

129 

 

Beets, Topped 

32 

95 - 100 

4 - 6 months 

30.1 

0.90 

0.46 

126 

23

 

Blackberries 

31 - 32 

95 

3 days 

30.5 

0.88 

0.46 

122 

19

 

Blueberries 

31 - 32 

90 - 95 

2 weeks 

29.7 

0.86 

0.45 

118 

19

 

Bread, Baked 

— 

— 

1 - 3 months 

16 to 20 

0.70 

0.34 

46 - 53 

 

  Dough 

35 - 40 

85 - 90 

3 - 72 hours 

— 

0.75 

— 

— 

 

Broccoli, Sprouting 

32 

95 

10 - 14 days 

29.0 

0.92 

0.47 

130 

13

 

Brussels Sprouts 

32 

95 

3 - 5 weeks 

30.5 

0.88 

0.46 

122 

— 

 

Cabbage 

32 

95 - 100 

3 - 4 months 

30.4 

0.94 

0.47 

132 

17

 

Carrots, Topped, Mature 

32 

98 - 100 

5 - 9 months 

29.5 

0.90 

0.46 

126 

22

 

Cauliflower 

32 

95 

2 - 4 weeks 

29.0 

0.93 

0.47 

132 

16

 

Celery 

32 

95 

1 - 2 months 

31.1 

0.95 

0.48 

135 

30

 

Cherries, Sour 

31 - 32 

90 - 95 

3 - 7 days 

29.0 

0.87 

— 

120 

18

 

  Sweet 

30 - 31 

90 - 95 

2 - 3 weeks 

28.8 

0.84 

— 

— 

 

Chocolate (Coating) 

50 - 65 

40 - 50 

2 - 3 months 

95 - 85 

0.55 

0.30 

40 

 

Cocoa 

32 - 40 

50 - 70 

1 year, plus 

— 

— 

— 

— 

 

Coconut 

32 - 45 

80 - 85 

1 - 2 months 

30.4 

0.58 

0.34 

67 

 

Coffee (Green) 

35 - 37 

80 - 85 

2 - 4 months 

— 

0.30 

0.24 

147 - 21 

 

Collards 

32 

95 

10 - 14 days 

30.6 

0.90 

— 

— 

 

Corn, Sweet (Fresh) 

32 

95 

4 - 8 days 

30.9 

0.79 

0.42 

106 

16

 

Cranberries 

36 - 40 

90 - 95 

2 - 4 months 

30.4 

0.90 

0.46 

124 

22

 

Cucumbers 

50 - 55 

90 - 95 

10 - 14 days 

31.1 

0.97 

0.49 

137 

20

 

Currants 

31 - 32 

90 - 95 

10 - 14 days 

30.2 

0.88 

0.45 

120 

— 

 

Daily Products

 

  Cheddar Cheese 

40 

65 - 70  

6 months 

8.0 

0.50 

0.31 

53 

40

 

  Processed Cheese 

40 

65 - 70 

12 months 

19.0 

0.50 

0.31 

56 

40

 

  Butter 

40 

75 - 85 

1 months 

-4 to 31 

0.50 

0.25 

23 

 

  Cream 

35 - 40 

— 

2 - 3 weeks 

31.0 

0.66 - 0.80 

0.36 - 0.42 

79 - 107 

 

  Ice Cream 

-20 to -15 

— 

3 - 12 months 

21.0 

0.66 - 0.70 

0.37 - 0.39 

86 

25

 

  Milk, Fluid Whole

 

    Pasteurized, Grade A 

32 - 34 

— 

2 - 4 months 

31.0  

0.93 

0.46 

125 

 

    Condensed Sweet 

40 

— 

15 months 

5.0 

0.42 

0.28 

40 

 

    Evaporated 

40 

— 

24 months 

29.5 

0.79 

0.42 

106 

 

Dates (Dried) 

0 or 32 

75 or less 

6 - 12 months 

3.7 

0.36 

0.26 

29 

24

 

Dewberries 

31 - 32 

90 - 95 

3 days 

27.0 

0.88 

— 

— 

 

Dried Fruits 

32 

50 - 60 

9 - 12 months 

— 

0.31 - 0.41 

0.26 

20 - 37 

45 

 

Eggplant 

45 - 50 

90 - 95 

7 - 10 days 

30.6 

0.94 

0.48 

132 

 

Egg, Shell 

29 - 31 

80 - 85 

5 - 6 months 

28.0 

0.73 

0.40 

96 

19

 

  Shell, Farm Cooler 

50 - 55 

70 - 75 

2 - 3 weeks 

28.0 

0.73 

0.40 

96 

19

 

  Frozen, Whole 

0 or below 

— 

1 year, plus 

28.0 

0.73 

0.42 

106 

41

 

Endive (Escarole) 

32 

95 

2 - 3 weeks 

31.9 

0.94 

0.48 

132 

 

  Figs, Dried 

32 - 40 

50 - 60 

9 - 12 months 

— 

0.39 

0.27 

34 

45

 

  Fresh 

31 - 32 

85 - 90 

7 - 10 says 

27.6 

0.82 

0.43 

112 

21

 

Fish, Fresh 

30 - 35 

90 - 95 

5 - 15 days 

28.0 

0.70 - 0.86 

0.38 - 0.45 

89 - 112 

 

  Haddock, Cod 

30 - 35 

90 - 95 

15 days 

28 

0.82 

0.43 

112 

35

 

  Salmon 

30 - 35 

90 - 95 

15 days 

28 

0.71 

0.39 

92 

33

 

    Smoked 

40 - 50 

50 - 60 

6 - 8 months 

— 

0.70 

0.39 

92 

 

  Shellfish, Fresh 

30 - 33 

86 - 95 

3 - 7 days 

28.0 

0.83 - 0.90 

0.44 - 0.46 

113 - 125 

 

  Tuna 

30 - 35 

90 - 95 

15 days 

28.0 

0.76 

0.41 

100 

35

 

Furs and Fabric 

34 - 40 

45 - 55 

several years 

— 

— 

— 

— 

 

Garlic, Dry 

32 

65 - 70 

6 - 7 months 

30.5 

0.69 

0.40 

89 

 

Gooseberries 

31 - 32 

90 - 95 

2 - 4 weeks 

30.0 

0.90 

0.46 

126 

19

 

Grapefruit 

50 - 60 

85 - 90 

4 - 6 weeks 

30.0 

0.91 

0.46 

126 

30

 

Grapes, American Type 

31 - 32 

85 - 90 

2 - 8 weeks 

29.7 

0.86 

0.44 

116 

29

 

  European Type 

30 - 31 

90 - 95 

3 - 6 months 

28.1 

0.86 

0.44 

116 

29

 

Greens, Leafy 

32 

95 

10 - 14 days 

30.0 

0.91 

0.48 

136 

32

 

Guavas 

45 - 50 

90 

2 - 3 weeks 

— 

0.86 

— 

— 

 

Honey 

38 - 50 

50 - 60 

1 year, plus 

— 

0.35 

0.26 

26 

 

Horseradish 

30 - 32 

95 - 100 

10 - 12 months 

28.7 

0.78 

0.42 

104 

 

Kale   

32 

95 

3 - 4 months 

31.1 

0.89 

0.46 

124 

 

Kohlrabi 

32 

95 

2 - 4 weeks 

30.2 

0.92 

0.47 

128 

 

Leeks, Green 

32 

95 

1 - 3 months 

30.7 

0.88 

0.46 

126 

 

Lemons 

32 or 50 - 58 

85 - 90 

1 - 6 months 

29.4 

0.91 

0.46 

127 

33

 

Lettuce Head 

32 - 34 

95 - 100 

2 - 3 weeks 

31.7 

0.96 

0.48 

136 

25

 

Limes 48 - 50 

85 - 90 

6 - 8 weeks 

29.1 

0.89 

0.46 

122 

32

* Not based on maintaining nutritional value. 

Reprinted by permission from 1974 ASHRAE Applications Handbook.

Summary of Contents for H-ENGM0408

Page 1: ...ENGM0408 April 2008 Replaces H ENGM0806 August 2006 Engineering Manual Head Pressure Control Valve Oil Separator Compressor Suction Accumulator Suction Filter Evaporator Condenser Liquid Line Solenoi...

Page 2: ...e it the number one choice of convenience store owners everywhere Right source Right parts Right now We are your link to a complete line of dependable and certified commercial refrigeration parts acce...

Page 3: ...s of various liquids and solids 18 16 Banana room refrigeration requirement 19 17 Meat cutting or preparation room 19 18 Rapid load selection for back bars 19 19 Refrigeration requirements for hardeni...

Page 4: ...arated into the following main sources of heat for a given 24 hour period 1 Transmission load 2 Air change load 3 Miscellaneous load 4 Product load Accuracy Accuracy in calculation is the first step i...

Page 5: ...y operated lift trucks are used in refrigerated rooms which represent a heat gain of 8 000 to 15 000 BTU hr or more over the period of operation If motor or loading conditions are not known then calcu...

Page 6: ...simplify the calculation and tabulation of refrigeration loads there are two forms available Bulletin Above32 05 is used for all rooms above 32 F 0 C Bulletin Below32 05 is used for all rooms below 32...

Page 7: ...x BTU lbs 24 hrs Table 8 For consideration of previously loaded product a multiplier of 5 is normally applied to the daily product load Line 4 Divide by No of Operating Hrs 16 to obtain BTUH Cooling R...

Page 8: ...lbs 24 hrs Table 8 b lbs stored x BTU lbs 24 hrs Table 8 For consideration of previously loaded product a multiplier of 5 is normally applied to the daily product load Line 4 Divide by No of Operating...

Page 9: ...e 7 x F Temp Drop For product pulldown time other than 24 hrs figure 24 hr load x 24 Pulldown Time 5 Product Load Respiration a lbs stored x BTU lbs 24 hrs Table 8 b lbs stored x BTU lbs 24 hrs Table...

Page 10: ...al Temp Drop b gallons of ice cream day x BTU gal Table 19 For product pulldown time other than 24 hrs figure 24 hr load x 24 Pulldown Time Divide by No of Operating Hrs 18 to obtain BTUH Cooling Requ...

Page 11: ...ice cream day x BTU gal Table 19 For product pulldown time other than 24 hrs figure 24 hr load x 24 Pulldown Time Divide by No of Operating Hrs 18 to obtain BTUH Cooling Requirement Equipment Selecti...

Page 12: ...Table 7 Product Load Figured 24 hr Pulldown a lbs day x Spec Heat above freezing x F Intial Temp Drop lbs day x Latent Heat Fusion lbs day x Spec Heat below freezing x F Intial Temp Drop b gallons of...

Page 13: ...0 6 Concrete Floor 4 8 5 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600 Insulation Inches Heat Load BTU Per 24 Hours Per One Square Foot of Outside Surface Cork Glass Urethane or...

Page 14: ...1 7 0 36 0 41 1 86 2 09 2 17 2 43 2 49 2 79 2 85 3 24 30 1 1 0 24 0 29 0 58 0 66 2 00 2 24 2 26 2 53 2 64 2 94 2 95 3 35 25 3 9 0 41 0 45 0 75 0 83 2 09 2 42 2 44 2 71 2 79 3 16 3 14 3 54 20 6 7 0 56...

Page 15: ...months 8 0 0 50 0 31 53 40 Processed Cheese 40 65 70 12 months 19 0 0 50 0 31 56 40 Butter 40 75 85 1 months 4 to 31 0 50 0 25 23 Cream 35 40 2 3 weeks 31 0 0 66 0 80 0 36 0 42 79 107 Ice Cream 20 to...

Page 16: ...32 90 2 4 weeks 30 3 0 90 0 46 124 33 Pears 29 31 90 95 2 7 months 29 2 0 86 0 45 118 47 Peas Green 32 95 1 3 weeks 30 9 0 79 0 42 106 23 Peppers Sweet 45 50 90 95 2 3 weeks 30 7 0 94 0 47 132 41 Pep...

Page 17: ...0 5 85 11 55 11 00 25 75 Beans Green or Snap 4 60 5 70 16 05 22 05 Beans Lima 1 15 1 60 2 15 3 05 11 00 13 70 Beets Topped 1 35 2 05 3 60 Broccoli 3 75 5 50 8 80 16 90 25 00 Brussels Sprouts 1 65 4 15...

Page 18: ...s 150 0 76 104 35 Sheep 45 0 76 101 33 Hogs 180 0 54 106 35 Table 12 Heat equivalent of Occupancy BTU per HP HR Motor Connected Connected Losses Load Motor Load In Outside Outside HP Refr Space1 Refr...

Page 19: ...87 600 75 85 700 72 81 800 69 78 900 67 75 1000 65 73 1200 62 69 Room Loads based on continuous operation and includes allowance for average number of personnel processing equipment etc with glass pa...

Page 20: ...nd temperature design conditions Design Design Ground Dry Bulb Wet Bulb Temp State City F C F C F C Nebraska Omaha 95 35 78 26 60 16 Nevada Reno 95 35 65 18 65 18 New Hamp Concord 90 32 73 23 55 13 Ne...

Page 21: ...hr to be sure that the unit cooler is large enough to balance properly with the condensing unit Low relative humidity requirements permit higher T D which in turn will allow selection of unit coolers...

Page 22: ...of air for particular applications Derating Factors A Ambient B Altitude C Saturated Suction Temperature S S T D 50 Cycle Power In the selection of refrigeration equipment it should be noted that the...

Page 23: ...l 1 5 safety factor sometimes applied to handle initial high rate of product heat evolution Ice Cream Hardening 10 F Heavy Duty 10 hour pull down with product 30 frozen and a certain percentage over r...

Page 24: ...ere low and normal temperature is being maintained Allow sufficient space between rear of unit cooler and wall to permit free return of air Refer to unit manufacturers catalog for proper space Always...

Page 25: ...0 1 1 8 1 3 8 1 3 8 1 5 8 1 5 8 1 5 8 1 3 8 1 3 8 1 5 8 1 5 8 2 1 8 2 1 8 1 3 8 1 5 8 1 5 8 1 5 8 2 1 8 2 1 8 72 000 1 1 8 1 3 8 1 5 8 1 5 8 1 5 8 2 1 8 1 3 8 1 3 8 1 5 8 1 5 8 2 1 8 2 1 8 1 3 8 1 5 8...

Page 26: ...8 2 1 8 2 1 8 2 5 8 5 8 5 8 7 8 7 8 7 8 7 8 72 000 1 5 8 2 1 8 2 1 8 2 1 8 2 5 8 2 5 8 1 5 8 2 1 8 2 1 8 2 1 8 2 5 8 2 5 8 5 8 5 8 7 8 7 8 7 8 7 8 78 000 1 5 8 2 1 8 2 1 8 2 1 8 2 5 8 2 5 8 1 5 8 2 1...

Page 27: ...1 3 8 1 3 8 1 3 8 1 5 8 1 5 8 1 1 8 1 3 8 1 3 8 1 5 8 1 5 8 1 5 8 1 3 8 1 3 8 1 5 8 78 000 1 1 8 1 1 8 1 3 8 1 3 8 1 3 8 1 5 8 1 1 8 1 3 8 1 3 8 1 3 8 1 5 8 1 5 8 1 1 8 1 3 8 1 5 8 1 5 8 1 5 8 2 1 8...

Page 28: ...1 2 1 2 5 8 5 8 5 8 5 8 66 000 1 5 8 2 1 8 2 1 8 1 3 8 1 3 8 1 5 8 1 5 8 2 1 8 2 1 8 1 3 8 1 5 8 1 5 8 2 1 8 2 1 8 2 1 8 1 2 1 2 5 8 5 8 5 8 5 8 72 000 1 5 8 2 1 8 2 1 8 1 3 8 1 5 8 1 5 8 1 5 8 2 1 8...

Page 29: ...1 1 8 1 3 8 1 3 8 1 5 8 1 5 8 1 5 8 1 1 8 1 3 8 1 5 8 1 5 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8 1 5 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8 78 000 1 1 8 1 3 8 1 3 8 1 5 8 1 5 8 2 1 8 1 3 8 1 3 8 1 5 8 1 5 8 1 5 8 2...

Page 30: ...5 8 2 1 8 1 2 1 2 5 8 5 8 5 8 5 8 66 000 1 5 8 1 5 8 2 1 8 1 3 8 1 5 8 1 5 8 1 5 8 1 5 8 2 1 8 1 3 8 1 5 8 1 5 8 1 5 8 1 5 8 2 1 8 1 2 5 8 5 8 5 8 5 8 5 8 72 000 1 5 8 2 1 8 2 1 8 1 5 8 1 5 8 1 5 8 1...

Page 31: ...g Tee Straight Through 1 2 2 3 4 4 5 7 8 10 12 14 16 Table 25 Pressure Loss of Liquid Refrigerants in Liquid Line Risers Expressed in Pressure Drop PSIG and Subcooling Loss F Liquid Line Rise in Feet...

Page 32: ...3 8 7 8 1 1 8 7 8 1 1 8 1 1 8 100 1 5 8 1 1 8 1 3 8 1 1 8 1 3 8 1 3 8 180 000 50 1 5 8 1 1 8 1 3 8 1 1 8 1 3 8 1 3 8 100 1 5 8 1 3 8 1 5 8 1 3 8 1 5 8 1 5 8 240 000 50 1 5 8 1 3 8 1 3 8 1 3 8 1 5 8 1...

Page 33: ...1 3 27 26 39 63 86 1 24 134a 64 2 2 57 14 26 40 61 1 91 1 3 8 22 63 5 3 50 27 42 64 93 1 33 R507 404A 55 0 4 98 40 58 95 1 32 1 87 134a 90 9 3 65 20 37 57 87 1 30 1 5 8 22 90 0 4 96 37 59 90 1 33 1 8...

Page 34: ...6 7 44 111 2 40 0 104 219 2 73 3 164 327 4 26 1 15 5 0 7 2 45 113 0 40 6 105 221 0 73 9 165 329 0 25 6 14 6 8 7 8 46 114 8 41 1 106 222 8 74 4 166 330 8 25 0 13 8 6 8 3 47 116 6 41 7 107 224 6 75 0 16...

Page 35: ...2 F Density of Water 62 4 lbs Cu Ft Specific Heat of Water 1 BTU lb F Latent Heat of 970 BTU lb at 212 F Atm Vaporization 1054 3 BTU lb at 70 F Specific Heat of Ice 0 5 BTU lb F Latent Heat of Fusion...

Page 36: ...ubic Foot of Brick Building 112 120 1 Cubic Foot of Concrete 120 140 1 Cubic Foot of Earth 70 120 at 32 F at 70 F and 29 92 Hg To Convert Measurements From To Multiply By Cubic Feet Cubic Centimeters...

Page 37: ...ng A decrease in dry bulb and sensible heat content represented by a horizontal line directed to the loft along the constant specific humidity line Specific humidity and dew point remain constant 3 Ev...

Page 38: ...ure of 29 921 in HG Atmospheric Pressure at other altitude Altitude Pressure Ft in HG 1000 31 02 500 30 47 0 29 92 500 29 38 1000 28 86 2000 27 82 3000 26 83 4000 25 84 5000 24 90 6000 23 98 7000 23 0...

Page 39: ...39 Appendix Charts Medium Temperature Psychrometric Chart 32 to 130 F Standard Atmospheric Pressure of 29 921 in HG Courtesy of ASHRAE Reproduced by permission...

Page 40: ...antaneous evaporation of refrigerant in a pressure reducing device to cool the refrigerant to the evaporations temperature obtained at the reduces pressure 22 Flooded System system in which only part...

Page 41: ...x8 216 12775 16359 12072 15459 11807 16080 12767 17464 13726 18847 12x20x8 240 13681 17440 12928 16481 12573 17052 13599 18524 14626 19995 12x22x8 264 14549 18474 13749 17458 13299 17974 14392 19541 1...

Page 42: ...o loads to allow for service For product pull down greater than 10 degrees divide pull down temperature by 10 Multiply this number by the BTUH shown on Table A then add to Box Load Floor Approx 65 R H...

Page 43: ...at left of graph Follow it across to the straight line curve Then drop down to total load line at bottom of graph Total load for this example is 224 000 BTUH Select equipment accordingly Material orig...

Page 44: ...serve the right to make changes in specifications without notice CLIMATE CONTROL Commercial Refrigeration Parts The name behind the brands you trust Heatcraft Refrigeration Products LLC 2175 West Park...

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