Residential & Light CommercialDesign & Installation Manual

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Authored by Geo-Connections engineers, this 560-page manual is the latest and most comprehensive textbook available for the design and installation of residential and light commercial GSHP systems. This must have reference for all geothermal system designers and installers is loaded with illustrations, charts, diagrams, and tables to support and expand the informative text.

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About the Author

Charles Remund

Dr. Remund received his undergraduate and masters degrees in Agricultural Engineering from South Dakota State University, and his Ph.D. in Engineering from the University of Nebraska in 1988. He was on the Mechanical Engineering faculty at South Dakota State University from 1988 to 2009, where he taught thermodynamics, heat transfer, fluid dynamics, design of thermal systems and applied laboratory courses.

While at SDSU Dr. Remund was principle investigator on many research projects associated with ground source heat pumps, specifically addressing heat transfer characteristics of grouting materials, soil and rock. He also worked with regional electric utilities and the Geothermal Heat Pump Consortium through the Northern Geothermal Support Center, through which many were trained in various aspects of ground source heat pump design and installation.

Since 2009, Dr. Remund has been involved entirely in the private sector, where efforts to promote ground source heat pumps through design assistance and training (GeoConnections, Inc.), soil and rock formation thermal conductivity testing (GRTI), and the sale and technical support of thermally-enhanced grouting materials (GeoPro, Inc.).

Ryan Carda View Ryan Carda's LinkedIn Profile

Ryan Carda has been involved in the ground source heat pump industry for over 5 years. His involvement in the industry has included research, development and technical support for thermally-enhanced grouting materials in addition to design, installation, commissioning and troubleshooting of all types of geothermal systems.

Ryan has provided loopfield design assistance to PEs across the country on commercial projects exceeding 5000-tons worth of installed closed-loop GSHP system capacity. He is a co-author of “Design and Installation of Residential and Light Commercial GSHP Systems”, developed in cooperation with the International Ground Source Heat Pump Association (IGSHPA).

Ryan has also helped with the development of the current curriculum for IGSHPA's 3-Day Accredited Installer's Course and is actively involved in the training of industry professionals on the subjects of proper GSHP system design, installation, and troubleshooting practices.

Since his involvement as co-author of IGSHPA’s latest design and installation manual, Ryan’s efforts have primarily turned to the development and advancement of LoopLink RLC and LoopLink PRO, our web-based ground source heat pump modeling and design software programs.

Ryan graduated with his Master of Science degree in Engineering from South Dakota State University in 2006.

Table of Contents

  1. Introduction and Overview
    1. The Case for Ground Source Heats Pumps
    2. Residential and Light Commercial Space Conditioning Systems
    3. The Ground Source Heat Pump Concept
    4. Heat Pump Operation
    5. GSHP System Materials and Components
    6. Brief History of GSHP Systems
  2. Performance of GSHP Equipment
    1. Types of GSHP Equipment
    2. Energy Balance on the GSHP and Ground Loads
    3. Factors that Affect the Performance of a GSHP
    4. Performance of a Single-Capacity, Water-to-AIr GSHP
    5. Performance of a Dual Capacity, Water-to-Air GSHP
    6. Performance of Water-to-Water GSHP
    7. Design Criteria for GSHP Equipment Selection
  3. Selecting a GSHP for Heating and Cooling Loads
    1. Overall System Design Procedure for the GSHP
    2. Heating and Cooling Design Load Calculation Procedures
    3. Indoor Air Quality (IAQ)
    4. Selection of Water-to-Air GSHP Equipment
    5. Air Distribution System Layout and Design
    6. Building/Zone Energy Analysis Using Bin Method
  4. Piping Materials, Properties, and Flow Characteristics
    1. Pipe Types and Uses
    2. Pipe Thermal Resistance
    3. Pressure Ratings
    4. Head Loss
    5. Flow Capacities
    6. Flushing Flow Rates
  5. Design of Closed-Loop Ground Heat Exchangers
    1. Configuration and Layout of Closed-Loop Ground Heat Exchangers
    2. Vertically-Bored, Closed-Loop GHEX Design
    3. Horizontally-Trenched, Closed-Loop GHEX Design
    4. Horizontally-Bored, Closed-Loop GHEX Design
  6. Interior Closed-Loop Piping Design
    1. Overall Interior Piping Design Procedure
    2. Piping Materials
    3. Pressurized & Non-Pressurized Flow Centers
    4. Building Penetration Methods
    5. Interior Piping Layout
    6. Pump Sizing
  7. Installing The Closed-Loop GHEX Piping System
    1. Site Evaluation
    2. Designing for the Site
    3. Forming a Site Plan
    4. Project Preparation & Installation Guidelines
    5. Vertically-Bored, Closed-Loop GHEX Installation
    6. Horizontally-Trenched, Closed-Loop GHEX Installation
    7. Horizontally-Bored, Closed-Loop GHEX Installation
    8. Installing the Loopfield Header
    9. As-Built Drawings
    10. Site Restoration
  8. System Flushing & Purging
    1. System Pre-Startup
    2. Flushing & Purging Basics
    3. Verifying GHEX Pressure/Flow Design
    4. Charging the System with an Antifreeze Solution
    5. Pressurizing the GSHP System Water Side
    6. Pressurized Flow Center Startup Procedure
    7. Non-Pressurized (Standing Column) Flow Center Startup Procedure
    8. Flushing/Purging Guidelines for Multiple Heat Pump Systems
  9. Domestic Hot Water Heating
    1. Domestic Hot Water Options
    2. Domestic Hot Water Generation Costs and GHEX Design Parameters
    3. Integration of Hot Water Generation GHEX Design Parameters into
    4. GHEX Design Worksheets
  10. Resistance Heat
    1. Resistance Heat Operation
    2. Installing Resistance Heat
  11. GSHP Startup, Performance Checking, and Troubleshooting
    1. GSHP System Startup
    2. GSHP System Operation and Performance Checking
    3. Troubleshooting