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HVAC Pump Handbook, Second Edition

by: James B. Rishel

Abstract: Design, install, and maintain HVAC pumps. Filled with case studies and problem-solving sections, this reference offers HVAC

engineers and technicians concrete methods for achieving efficient operation in utilizing the latest digital electronic technologies. Updated to include the latest information ranging from codes to the electronic evolution in HVAC pumping systems.

Full details

Table of Contents

A. Preface

1. Digital Electronics and HVAC Pumps 2. Physical Data for HVAC System Design 3. Piping System Friction

4. Basics of Pump Design

5. Physical Description of HVAC Pumps 6. HVAC Pump Performance

7. Pump Drivers and Variable-Speed Drives 8. The Use of Water in HVAC Systems 9. Configuring an HVAC Water System

10. Basics of Pump Application for HVAC Systems 11. Open Cooling Tower Pumps

12. Pumps for Process Cooling

13. Pumping Open Thermal Storage Tanks 14. Chillers and Their Pumps

15. Chilled Water Distribution Systems 16. Closed Condenser Water Systems 17. Pumps for Closed Energy Storage Systems 18. Pumps for District Cooling and Heating 19. Steam and Hot Water Boilers

20. Low-Temperature Hot Water Heating Systems

21. Pumps for Medium- and High-Temperature Water Systems 22. Condensate, Boiler Feed, and Deaerator Systems 23. Instrumentation and Control for HVAC Pumping Systems 24. Testing HVAC Centrifugal Pumps

25. Installing HVAC Pumps and Pumping Systems 26. Factory-Assembled Pumping Systems 27. Operating HVAC Pumps

28. Maintaining HVAC Pumps

29. Retrofitting Existing HVAC Water Systems 30. Summary of HVAC Energy Evaluations

31. The Modern Two-Pipe Heating and Cooling System 32. Advanced Heat Recovery

A. Abbreviations

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C. Glossary of Equations D. Conversion of English Units to SI E. ABOUT THE AUTHORS

Tools & Media

figure (268) table (88)

Expanded Table of Contents

A. Preface

1. Digital Electronics and HVAC Pumps

Introduction

Computer-Aided Calculation of HVAC Loads and Pipe Friction Hydraulic-Gradient Diagrams

Speed and Accuracy of Electronic Design of Water Systems Databasing

Electronic Communication

Electronic Design of the Piping and Accessories Electronic Selection of HVAC Equipment Electronic Control of HVAC Water Systems Electronics and HVAC Pumps

Electronics and Variable-Speed Pumps Electronic Commissioning

Purpose of This Book

2. Physical Data for HVAC System Design

Introduction

Standard Operating Conditions Thermal Equivalents

Water Data

Glycol-Based Heat-Transfer Fluid (HTF) Solutions Steam Data

Areas and Volumes of Pipe and Tanks Electrical Data

Efficiency Evaluations of HVAC Water Systems Additional Reading

3. Piping System Friction

Maximum Velocity in Pipe Pipe and Fitting Specifications Steel Pipe Friction Analysis Steel and Cast Iron Pipe Fittings Thermoplastic Pipe

Copper Pipe and Tubing Glycol Solutions

Hydraulic-Gradient Diagrams Piping Network Analyses Summary

4. Basics of Pump Design

Introduction

Centrifugal Pump Impeller Design General Performance of a Centrifugal Pump Sizing Centrifugal Pumps

Specific Speed of a Pump Critical Speed of a Pump

Minimum Speed for a Variable-Speed Pump Minimum Flow for HVAC Pumps

Two Types of Centrifugal Pumps for HVAC Service Open or Closed Impellers

General Pump Design Information The Quality of HVAC Pumps

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5. Physical Description of HVAC Pumps

Introduction

Physical Description of HVAC Pumps Two Basic Types of Centrifugal Pumps Positive-Displacement Pumps Regenerative Turbine Pumps Pump Construction

Internal Forces and Leakages in Centrifugal Pumps Mechanical Devices for Pumps

Bibliography

6. HVAC Pump Performance

Introduction

Pump Head-Flow Curves

Series/Parallel Operation of Centrifugal Pumps Affinity Laws of Pumps

Pump Suction Limitations Pumping Energy Pump Noise

Sources of Pump Information Summary

7. Pump Drivers and Variable-Speed Drives

Introduction Electric Motors

Variable-Speed Drives for Electric Motors Steam Turbine Drives for HVAC Pumps Engine-Driven Pumps

Summary

8. The Use of Water in HVAC Systems

Efficiency of Operation

Efficient Use of Water in HVAC Systems Hot and Chilled Water Systems

Energy Comparison of the Three Systems

The Use of Balance Valves on Variable-Volume Systems Elimination of Pump Head-Wasting Devices

Categorization of HVAC Water Systems Suggested Design Rules

Eliminating Energy Waste During Commissioning Bibliography

9. Configuring an HVAC Water System

Introduction

Selection of Temperature Differential

Modeling a Water System for System Head and Area Static Pressure

Three Zones of HVAC Water Systems Piping Configurations

Location of Expansion Tanks Elimination of Air in HVAC Systems Control of Return Water Temperature Heat Exchangers for Hot and Chilled Water

10. Basics of Pump Application for HVAC Systems

Introduction Point of Selection Pump Speed

Proper Use of Affinity Laws Computing Pump Performance Number of Pumps

Mixing Constant- and Variable-Speed Pumps Efficiency of a Pumping System

Wire-to-Water Efficiency Indication Kilowatt Input for a Pumping System Pump Control

Effects of Water Systems on Pump Performance

11. Open Cooling Tower Pumps

Introduction

Water Flow Conditions for Cooling Towers Cooling Tower Piping

Location of Cooling Tower Pumps

Selection and Operation of Condenser Pumps Special Condenser Water Circuits

Understanding Legionnaires’ Disease Summary

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Introduction Liquid Cooling Energy Recovery Gas Stream Cooling

13. Pumping Open Thermal Storage Tanks

Introduction Cool Thermal Storage

Types of Cool Water Storage Systems Chilled Water Storage

Open Ice Storage Systems Eutectic Salt Systems

Decision as to the Type of Energy Storage System Basics of Pump Application to Open Energy Storage Tanks Types of Pumps for Thermal Storage

Operating Pumps on Thermal Storage Systems Hot Water Storage

Summary

14. Chillers and Their Pumps

Introduction Rating of Chillers

Chiller Energy Consumption Circuiting Chilled Water to Chillers Operating and Sequencing Chillers Preferentially Loading Chillers Fuel-Fired Absorption Chillers

Connecting Primary Pumps to Chillers (Primary-Secondary) Connecting Multiple Chiller Plants

Effect of Water Temperatures on Chiller Performance

15. Chilled Water Distribution Systems

Introduction Primary Systems

Primary-Secondary Systems

Primary-Secondary-Tertiary Pumping Systems

Comparison of Energy for Variable Primary with Primary/Secondary Distributed Pumping

Consensus

Elimination of Nonfreeze, Preheat Coils Direct Heat Transfer

16. Closed Condenser Water Systems

Introduction

Reasons for Closed Condenser Systems Types of Closed Condenser Systems Heat-Recovery Condenser Systems Uses of Heat Reclaimed from Chillers

Condensing-Type Boiler Improves Heat Recovery Pumping Aspects of Heat Recovery

Geothermal Systems Storage of Hot Water Summation

17. Pumps for Closed Energy Storage Systems

Introduction

Pressure Tanks for Energy Storage

Closed Energy Storage Systems with Open Tanks Circuiting Internal Ice Melt Systems

Pumping Internal Ice Melt Systems Bibliography

18. Pumps for District Cooling and Heating

Introduction

Model System for District Cooling

Calculating Central Energy Plant Static Pressure Primary-Secondary Pumping System Analysis Distributed Pumping System

Differential Temperature Building Connections District Heating Conclusions

19. Steam and Hot Water Boilers

Introduction

Classification of Boilers

Types of Boilers by Materials of Construction Types of Boilers: Condensing, or Noncondensing Rating of Boilers

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Computing Boiler Water Flow Connecting Pumps to Boilers

Reset of Boiler Temperature versus Zone Reset Boiler Controls

20. Low-Temperature Hot Water Heating Systems

Introduction

Classification of Hot Water Systems Sources of Heat for Hot Water Systems Uses of Hot Water in HVAC Systems Distribution of Low-Temperature Hot Water Hot Water Design and Differential Temperatures

21. Pumps for Medium- and High-Temperature Water Systems

Introduction

Calculation of Water Flow Calculation of Pump Head

Medium- and High-Temperature Water Generators Distribution of Medium- and High-Temperature Water Pumps for Medium- and High-Temperature Water Systems

22. Condensate, Boiler Feed, and Deaerator Systems

Introduction

Review of Steam Systems Low-Pressure Steam Systems High-Pressure Steam Systems Steam Boilers

Condensate Systems for Steam Boilers Design and Selection of Boiler Feed Pumps Number of Boiler Feed Pumps

Condensate Transfer Pumps for Deaerators Summary

23. Instrumentation and Control for HVAC Pumping Systems

Introduction Transmitters Indicators Controllers Control Wiring Control Valves Summation

24. Testing HVAC Centrifugal Pumps

Introduction Objective Types of Tests Testing Procedures Field Testing of Pumps Test Instrumentation Test Reports and Records

25. Installing HVAC Pumps and Pumping Systems

Introduction

Preinstallation Procedures Pump and Pumping System Bases Connecting Piping to Pumps Electrical Provisions for Pumps Alignment of Pumps and Motors Initial Operation of Pumps Summation

26. Factory-Assembled Pumping Systems

Introduction

Types of Factory-Assembled Pumping Systems

Advantages of Factory-Assembled HVAC Pumping Systems Components of a Factory-Assembled Pumping System Testing Pumping Systems

Summation

27. Operating HVAC Pumps

Introduction

Checking for Efficient Selection of HVAC Pumps Constant- or Variable-Speed Pumps

Proper Selection and Operation of Variable-Speed Pumps Control Signals for Speed Control

Sequencing and Alternation Summary

28. Maintaining HVAC Pumps

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Maintaining the Pumping Equipment at High Efficiency Checking the Pump Itself

Checking the Pump Installation

Checking the Electrical Conduit and Piping Installation Maintenance Observations and Scheduling

Summation

29. Retrofitting Existing HVAC Water Systems

Introduction System Evaluation

Evaluation of Existing Procedures System Configuration Modification Summation

30. Summary of HVAC Energy Evaluations

Review of Efficiencies System Efficiencies Purpose of Efficiencies

Sustained System and Equipment Efficiencies Summary

31. The Modern Two-Pipe Heating and Cooling System

Introduction The Renaissance Good Candidates Handling Load Variations Changeover

Equipment Safety Energy Concerns

Dehumidification without Reheat Piping Arrangements

Variations Conclusions

32. Advanced Heat Recovery

Introduction

The Logic of Heat Recovery Types of Heat Recovery Chillers Heat Available from Chillers

Instrumenting a Dedicated Heat Recovery Chiller (DHRC) Typical Piping for the DHRC

Heat Recovery Equations The Uses of Recovered Heat Domestic water heating Other uses for recovered heat Sizing the DHRC

Control of DHRC Summary

A. Abbreviations

B. Terms and Nomenclature C. Glossary of Equations Chapter 2 Chapter 3 Chapter 4 Chapter 6 Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Chapter 12 Chapter 13 Chapter 14 Chapter 17 Chapter 19 Chapter 21 Chapter 22 Chapter 32

D. Conversion of English Units to SI E. ABOUT THE AUTHORS

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Book Details

Title: HVAC Pump Handbook, Second Edition

Publisher: McGraw-Hill: New York, Chicago, San Francisco, Lisbon, London, Madrid, Mexico City, Milan, New Delhi, San Juan, Seoul, Singapore, Sydney,

Toronto

Copyright / Pub. Date: 2006, 1996 The McGraw-Hill Companies, Inc. ISBN: 9780071457842

Authors:

James B. Rishel has been Owner and consultant in the pumping industry since the late 40’s. From 1960 to present, Rishel has been involved in the design and

operation of pumping systems. Significant projects include the Denver International Airport, National Institute of Standards and Technology, and National Institute of Health. The author of three books including HVAC Pump Handbook and Water Pumps and Pumping Systems published by McGraw-Hill, he is a member of ASHRAE Journal Editorial Board, and Hydraulic Institute Standards reviewer. Rishel’s other book, The Water Management Manual, was published by Systecon Inc. to promote good pump application practice, particularly variable speed pump operation. It is a composite of a number of magazine articles and company bulletins that he has written over the past twenty years.

Description: Design, install, and maintain HVAC pumps. Filled with case studies and problem-solving sections, this reference offers HVAC engineers and

technicians concrete methods for achieving efficient operation in utilizing the latest digital electronic technologies. Updated to include the latest information ranging from codes to the electronic evolution in HVAC pumping systems.

References

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