Refrigeration Load Estimate Form
(for rooms below 32ºF) Bulletin
Estimate for: | Estimate by: | Date: |
Basis for Estimate |
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Room Dimensions: Width |
| ft. x Length | ft. x Height | ft. |
Volume: (L) | x (W) | x (H) | = | cu. ft. |
Ambient Temp | ºF. (Corrected for sun load) — Room Temp. | ºF. = | ||
Note: Tables can be found in Engineering Manual,
ºF. T.D.
| Insulation |
Inches | Type |
Ceiling
Walls
Floor
Product Load |
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(a) | lbs./day of |
| to be reduced from entering temp. of | ºF. | ||||||
to freezing point of |
| ºF. (Table 7) = | ºF. Initial temp. drop |
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and then reduced from freezing point to storage Temp. of |
| ºF. = (Table 7) | ºF. Final temp. drop. | |||||||
(b) | gallons of ice cream @ | overrun |
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Miscellaneous |
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Motors (including all blower motors) |
| HP | Ground Temp. | (Table 21) | ||||||
Lights (assume 1 watt/sq.ft.) | Watts |
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No. of People |
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1. Transmission Loads |
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Ceiling: (L) | x (W) | x Heat Load |
| (Table 1) | = | |||||
North Wall: (L) | x |
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| x Heat Load |
| (Table 1) | = | ||
(W)(H) |
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South Wall: (L) | x |
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| x Heat Load |
| (Table 1) | = | ||
(W)(H) |
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East Wall: | (W)(L) |
| x | (W)(H) |
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| x Heat Load |
| (Table 1) | = |
West Wall: |
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| x Heat Load |
| (Table 1) | = | |
(W)(L) |
| (W)(H) |
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Floor: (L) | x (W) | x Heat Load |
| (Table 1) | = | |||||
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2. Air Change Load |
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Volume: | cu. ft. x | Factor (Table 5) x |
| Factor (Table 6) | = | |||||
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3. Additional Loads |
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Electrical Motors: |
| HP x 75000 BTU/HP/24 hr. |
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Electrical Lights: | Watts x 82 |
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People Load: | People x | BTU/24 hrs. (Table 12) |
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Glass Door Load: |
| Doors x 31200 BTU/Door/24 hr. |
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4.Product Load: (Table 7) (Product Load Figured @ 24 hr. Pulldown*)
(a) | lbs./day x | Spec. Heat above freezing x | ºF. Intial Temp. Drop | = | |
| lbs./day x | Latent Heat Fusion |
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| lbs./day x | Spec. Heat below freezing x | ºF. Intial 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) |
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Total Refrigeration Load (1+2+3+4+5) BTU/24 hrs.
Add 10% Safety Factor
Total with Safety/Factor BTU/24 hrs.
Divide by No. of Operating Hrs. (18) to obtain BTUH Cooling Requirement
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| Equipment Selection |
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Condensing Unit |
| Unit Cooler | System Capacity | |
Qty. | Model No. | Qty. | Model No. | BTU/hr. |
2175 West Park Place Blvd. • Stone Mountain, GA 30087 • 770.465.5600 • Fax: 770.465.5990 • www.heatcraftrpd.com
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