Book

Egg, Jay.

Geothermal HVAC : green heating and cooling / Jay Egg, Brian Clark Howard.

New York : McGraw-Hill, ©2011.

xv, 249 pages : illustrations, maps ; 25 cm

Synopsis: In-depth, practical details on geothermal HVAC systems. This definitive guide covers commercial and residential geothermal heating, ventilation, and air conditioning technologies and explains how to take advantage of their money- and energy-saving features. Geothermal HVAC: Green Heating and Cooling reviews the array of choices currently available, offers market values for systems based on varying options and conditions, and describes how to pair the best systems for each application and budget. Whether you're a contractor or a consumer, you'll find out what you need to know to implement a geothermal HVAC system in a retrofit or new construction project, and start benefiting from this sustainable, affordable technology. Find out how to: Learn the basic types of heat transfer-convection, conduction, and radiation; Understand how geothermal earth-coupled heat pumps work; Determine which ground loops to use for earth coupling to best meet the demands of the site; Use load sharing to channel the heat differential of one device into useful energy for another; Calculate system efficiencies and heat gain and loss; Understand geothermal project proposals and system pricing; Benefit from incentives, tax credits, and rebates for geothermal HVAC systems; Calculate your long-term return on investment; Verify that your installed system is working as intended; Troubleshoot your system and avoid common problems.

Ground source heat pump systems.

Howard, Brian Clark.

Includes index.

English.

Acknowledgments -- Introduction 1: Introduction To Geothermal Technologies -- Discovering geothermal cooling -- What is geothermal? -- What is "earth-coupled" heating and cooling? -- Clean, green energy with great promise -- Reducing peak demand -- Reducing the use of fossil fuels -- Reducing carbon emissions -- Coal-fired electricity for geothermal versus natural gas -- Summary -- 2: Heat Transfer And HVAC Basics -- Understanding heat transfer -- Heat transfer and geothermal HVAC -- Main parts of a geothermal system -- Basics of mechanical refrigeration -- Types of heating and cooling equipment -- Conventional fuel burners -- Electric resistance heating -- Heat pumps -- Passive solar -- Adiabatic, evaporative, or swamp coolers -- Direct expansion systems -- Chillers -- Absorption chiller system -- Cooling towers -- Critical issue of equipment sizing -- What is the size of my current system(s)? -- Summary -- 3: Geothermal Heat Pumps And Their Uses -- Passive and forced-air earth-coupled duct systems -- Water-source, forced-air heat pumps (water-to-air heat pumps) -- Direct expansion geothermal heat pumps -- Water-to-water heat pumps (heat pump chillers and boilers) -- Applications of geothermal heat pumps -- Pool heaters -- Domestic hot water -- Process cooling and heating -- Rooftop equipment -- Modular or piggyback units -- Package terminal heat pumps -- Vertical stack modular units -- 100% fresh air equipment -- Refrigeration systems -- Hybrid systems -- Superefficient DC HVAC -- Keeping the cows cool -- Summary -- 4: Earth Coupling Through Ground Loops -- Getting the load and loop size right -- Piping material -- Grout and backfill -- Manifolds or header systems -- Loop designs -- Vertical loops -- Horizontal loops -- Pond, lake, or ocean loops (use with caution) -- Pumping groundwater, lake water, or seawater (open-loop systems) -- Pump and reinjection -- Standing column wells -- Surficial aquifers and caisson infiltration -- Concerns with open loops -- Open loops versus closed loops -- Summary -- 5: Introduction To Load Sharing --Benefits of load sharing -- Case of a large hotel -- Earth coupling as thermal savings bank -- Summary -- 6: Efficiency And Load Calculations Simplified -- Rating geothermal systems -- Annual fuel utilization efficiency (AFUE) (for gas furnaces) -- Cooling load in kW/ton -- Coefficient of performance (COP) -- Energy efficiency ratio (EER) -- Determining actual efficiencies -- Load calculations -- Manuals published by the air conditioning contractors of America -- Manual J: Residential heat gain and loss analysis -- Manual N: Commercial heat gain and loss analysis -- Manual D: Residential duct design -- Manual Q: Commercial low-pressure duct design -- Energy calculations and value -- Summary -- 7: Understanding Pricing And Geothermal Systems -- Factors that affect the price of geothermal HVAC -- Efficiency rating -- Quality -- System sizes -- Topography -- Load sharing -- Sales volume and competition -- Optional upgrades -- Heat recovery for domestic hot water -- Domestic hot water geothermal heat pumps -- Exchanger materials -- Compressor stages -- Hot gas reheat -- Intermediate exchangers -- Direct digital controls (DDC) -- Summary -- 8: Incentives, Tax Credits, Rebates -- U S federal tax credits -- Commercial tax credits and incentives -- Feingold-Ensign Support Renewable Energy Act -- Home star (cash for caulkers) -- Rural Energy Saving Program Act -- State and local incentives -- PACE funding -- Summary -- 9: Understanding Geothermal Project Proposals -- Typical geothermal HVAC proposals -- Poor proposals -- Good proposals -- Summary -- 10: How To Calculate Your Payback -- Determining ROI on residential systems -- ROI on geothermal pool heat pumps -- Calculating payback periods for commercial geothermal systems -- Net present value -- 30 cents a KWh: the big impact of higher electric rates -- Summary -- 11: Verifying Your Systems -- Actual SEER and EER results -- Factors that can aff ect efficiency -- Regional climate issues -- How to calculate your own EER -- Data points -- Minimum efficiency standards -- Summary -- 12: Life Cycles And Longevity -- Benefits of indoor equipment -- How to determine when upgrades pay off -- Summary -- 13: Common Problems And Horror Stories -- Word on water conservation -- Common issues -- Underground hazards -- Pressurized pockets -- Broken or damaged loops -- Design and installation fails -- Choosing the wrong loop type -- Unfinished jobs -- Pushy contracts -- Miscommunication, faulty equipment, inexperience-oh my! -- Misunderstanding the technology -- Summary -- 14: Geothermal Spreads around the Globe -- Geothermal HVAC efforts around the world -- Australia -- China -- Eastern Europe -- South Korea -- Western Europe -- Conclusion -- Appendix : Geothermal HVAC Resources -- Government -- Advocacy and professional -- Manufacturers -- Installers -- Index.

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