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Products that provide lasting solutions. Refrigeration Load Estimating Manual (RLE) Technical Bulletin
Products that provide lasting solutions.
Refrigeration Load Estimating Manual (RLE)Technical Bulletin
Engineering Manual
Refrigeration Load Estimating
Krack Corporation©1992 Krack Corporation. All rights reserved. This work shall not bereproduced in whole or in part without expressed written premission.
Price $5.00Printed in U.S.A.
RLE-593
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Krack Corporation 1300 North Arlington Heights Rd., Suite 130Itasca, IL 60143Ph: 630.629.7500
krack.com
Printed in U.S.A. ©2012 Krack Corporation RLE_082012
Products that provide lasting solutions.
Refrigeration Load Estimating Manual (RLE)Technical Bulletin
This Krack Manual was published for the purpose of providing a concise, complete andconvenient load estimating reference volume for the commercial refrigeration industry.Application suggestions and unit cooler selection examples are representative for halocar-bon direct expansion fed systems.
Load estimating data can be used for industrial refrigeration systems using ammonia or brine as the refrigerant.
Estimating guidelines and rules of thumb, are necessarily general in nature, and should notbe utilized as the sole design criteria.
Product freezing and cooling data was developed in the Krack product testing laboratory.Other data has been extracted by permission from various ASHRAE Guide and Data Bookpublications.
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Krack Corporation 1300 North Arlington Heights Rd., Suite 130Itasca, IL 60143Ph: 630.629.7500
krack.com
Printed in U.S.A. ©2012 Krack Corporation RLE_082012
Products that provide lasting solutions.
Refrigeration Load Estimating Manual (RLE)Technical Bulletin
I. PRINCIPLES OF HEAT TRANSMISSION 4-5
II. JOB SURVEY 6
III. LOAD ESTIMATE 6-12
IV. PSYCHROMETRICS 8
V. APPLICATION EXAMPLES:
Fruit Chilling & Storage 13
Blast Freezing 14
Beef Carcass Chilling 15
Beer Storage 16
Nut Storage 17
Distribution Centers 18
Walk-In Coolers 19
VI. APPENDIX – TABLES 20-48
VII. APPENDIX – CHARTS 49-51
VIII. INDEX OF APPENDIX 52
Table of ConTenTs
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Krack Corporation 1300 North Arlington Heights Rd., Suite 130Itasca, IL 60143Ph: 630.629.7500
krack.com
Printed in U.S.A. ©2012 Krack Corporation RLE_082012
