Heatcraft Refrigeration Products H-ENGM0806, H-ENGM0408 manual Forward, Table of Contents

Page 2

Forward

This edition of Heatcraft Refrigeration Products LLC’s, Engineering Manual covering Commercial Refrigeration Cooling and Freezing Load Calculations has been prepared in the form of a condensed text and reference book.

The theory and principle of modern refrigeration has been omitted due to the many excellent publications currently available

on these subjects. The purpose of this reference book is to furnish the engineering, selling and servicing organizations with accurate and useful data to simplify load calculations.

No attempt has been made to specify a particular make of equipment. We sincerely hope that our efforts will be a tangible contribution to our rapidly growing industry.

Table of Contents

 

 

 

 

 

 

 

 

Job Survey

4

 

Derating Factors

22

 

 

Refrigeration Load Calculations

4-6

 

General Guidelines

23

 

 

Sample Calculations:

 

 

Unit Cooler Coil Placement

24

 

 

Above 32ºF. (0ºC.)

7-9

 

Sizing of Refrigerant Lines

25-32

 

 

Sample Calculations:

 

 

Psychrometric Chart

37-39

 

 

Rooms Below 32ºF. (0ºC.)

10-12

 

Glossary of Refrigeration Terms

40

 

 

Refrigeration Equipment Selection

21

 

Quick Selection Guide

41

 

 

Type of Operation and Air Flow

22

 

Rapid Load Calculator for Large Coolers & Freezers

43

 

 

 

 

 

 

 

 

Refrigeration Equipment References on the World Wide Web

 

History of Leadership, Service

 

and Innovation

 

Bohn has been the

 

Supermarket Industry’s leading

 

brand of refrigeration products

®

since 1946. With an emphasis

on innovation and the

 

 

environment, Bohn is the clear

choice for meeting the demanding needs of this industry both in the United States and globally.

History of High Performance, Innovation and Product Selection Larkin has been the most trusted brand of refrigeration products for clean environments since 1928. With its innovative products, it is uniquely qualified to meet the needs of foodservice applications as well as mission critical applications such as data centers.

www.thecoldstandard.com

History of Dependability, Technical Support and Product Choice Climate Control is the brand that revolutionized

convenience store refrigeration in the 1970’s. Its reputation of dependability and products designed to reduce installation and operation costs still make it the number one choice of convenience store owners everywhere.

www.larkinproducts.com

Serving the Cold

Storage Industry with

Engineered Solutions

Chandler has been a

leading commercial refrigeration brand since 1933. Its emphasis on partnership allows customers to give input during the system design process, resulting in customized solutions that are precisely engineered to order.

www.coldyoucancounton.com

www.chandlerref.com

™

Commercial Refrigeration Parts

www.interlinkparts.com

Right source. Right parts. Right now.

We are your link to a complete line of dependable and certified commercial refrigeration parts, accessories and innovative electronic controls. Dependable. Versatile. Courteous. Finally, one simple source for all of your parts needs from a name you can trust.

© 2008 Heatcraft Refrigeration Products LLC

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Contents Engineering Manual Table of Contents ForwardOpenings and infiltration TablesWall heat loads Insulated block K factors Job Survey Refrigeration Load CalculationsProduct Load Safety FactorAir Change Load Daily figureLoad Calculation Forms Temperature above 32ºF 20-22 hrHourly Heat Load 50ºF. rooms and higher with coilExample 35ºF Convenience Store Cooler With Glass Doors Example 35ºF Beef Cooler Inches Type Ceiling Walls Floor Example -20ºF Ice Cream Hardening Freezer Example -10ºF Beef Freezer Gallons of ice cream @ Overrun Effective K Factor in Block Thickness of Insulation Appendix TablesWall Heat Loads Allowance for Sun EffectStorage VolumeFor long storage multiply the above values by Room 40ºF .4ºC 50ºF ºCStorage requirements and properties of perishable products Not based on maintaining nutritional valueMaple Sugar ºF. Other BTU / LB. / 24 Hrs Storage Temperature Degree F ProductHeat of Respiration Approx Heat equivalent of electric motors Heat gain due to operation of battery operated lift truckBTU / 24 HR Heat equivalent of OccupancyRapid load selection for back bars Banana Ripening RoomBanana Rooms Refrigeration Requirements Refrigeration requirements for hardening ice creamDry Bulb Summer outside air and ground temperature design conditionsDesign Temp State CityRefrigeration Equipment Selection Temperature DifferenceProduct Safety/Capacity Control Equipment BalanceRecommended Air Changes/Hour Derating FactorsType of Operation/Air Flow Effects of Altitude on Air Cooled EquipmentGeneral Guidelines Left Cooler or freezer with glass display doors Right Unit Cooler Recommended Coil ReplacementLeft Large cooler or freezer Right +30˚F Line SizingRecommended Line Sizes for R-134a 150 200 100Expansion Valve 21/8100 150 200 Recommended Line Sizes for R-22Equivalent Lengths Receiver to 200 100Recommended Line Sizes for R-404A and R-507 Recommended Line Sizes for R-404A and R-507 30˚F 40˚FEquivalent Feet of Pipe Due to Valve and Fitting Friction Recommended Remote Condenser Line Sizes 134a R507 & R-404A Liquid Line NetRefrigerant Fahrenheit Celsius Fahrenheit Celsius Temperature Conversion ChartCelsius FahrenheitAir Coils Single Phase Loads Ohm’s Law for direct currentConversion Factors constant = WattsEnglish Conversion Factors & Data English to Metric Conversion FactorsSR/lb dry air Use of the Psychrometric ChartDefinitions 7000At other altitude Appendix ChartsAtmospheric Pressure Courtesy of Ashrae Reproduced by permissionCourtesy of Ashrae Reproduced by permission Glossary of Refrigeration Terms Btuh Load +35 Room +30 Room DimensionQuick Selection Guide FloorTips for Quick Selection Guide Rapid Load Calculator for Large Coolers and Freezers Heatcraft Refrigeration Products LLC

H-ENGM0408, H-ENGM0806 specifications

Heatcraft Refrigeration Products offers a diverse range of commercial refrigeration solutions designed to meet various operational needs. Among their notable offerings are the H-ENGM0806 and H-ENGM0408 models, which stand out for their efficiency and innovative features.

The H-ENGM0806 model boasts a robust construction and high-performance capabilities, making it ideal for large-scale refrigeration requirements. This model is engineered with an advanced compressor that provides powerful cooling while maintaining energy efficiency. The unit operates at low sound levels, making it suitable for environments where noise reduction is essential, such as restaurants and grocery stores. Additionally, the H-ENGM0806 incorporates a reliable fan system designed to ensure optimal air circulation, promoting even cooling throughout the refrigerated space.

Meanwhile, the H-ENGM0408 model is designed for medium-sized applications that require flexibility without compromising on performance. This unit features a compact design, making it an excellent choice for businesses with limited space. Its energy-efficient compressor reduces operational costs, and its user-friendly digital controls allow for easy temperature adjustments and monitoring. The H-ENGM0408 is engineered to operate in various ambient conditions, ensuring reliability and consistent performance regardless of the environment.

Both models feature a state-of-the-art microprocessor control system that allows for precise temperature management. These systems not only optimize performance but also enhance the longevity of the refrigeration units. The H-ENGM0806 and H-ENGM0408 come with a robust evaporator coil design, facilitating rapid cooling and reducing the downtime associated with equipment maintenance.

In terms of durability, both products are constructed with high-quality materials resistant to corrosion and wear, making them suitable for demanding commercial environments. Additionally, they comply with industry standards and regulations, ensuring safety and reliability in operation.

In conclusion, Heatcraft's H-ENGM0806 and H-ENGM0408 models combine efficiency, flexibility, and advanced technology to provide reliable refrigeration solutions. Their thoughtful design and robust features make them ideal choices for businesses looking to maintain optimal temperature control while minimizing energy consumption and operational costs.
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