Candor Construction Group & Alternative Energy Associates

www.altenergy1.com

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Geothermal Heating & Cooling

The Basic’s Of Geothermal It’s What’s Underneath that Counts!

100% 17% reflected by clouds.

6% reflected by surface.

Space 19% absorbed by water vapor, dust 4% absorbed by clouds.

Atmosphere 46% absorbed by ground Earth The earth is like a solar battery absorbing nearly half of the sun’s energy. The ground stays a relatively constant temperature through the seasons, providing a warm source in winter & a cool heat sink in summer.

U.S. Dept. of Energy Geothermal Systems ~ Introduction & Overview

It’s a Heat Source in Winter… Minus 40  F in winter 70  F Insulating layer of earth 40-60  F A Geothermal System cools the ground in winter & transfers the heat into the building… Geothermal Systems ~ Introduction & Overview

It’s A Cool Place to Dump Heat in Summer Plus 100  F in summer 70  F Insulating layer of earth 40-60  F …and cools the building in summer by rejecting heat to the ground Geothermal Systems ~ Introduction & Overview

Air Temperature vs. Ground Temperature

100 90 80 70 60 50 40 30 20 10 0 J F M A M J Ground J A Air S O N D

Vapor / Compression Refrigeration Cycle

Geothermal Benefits • Free and Renewable Energy • Quiet operation • Safe – all electric • Increased Comfort • Substantial Energy Savings • Reliability & longer life expectancy • Lower maintenance • Less impact on the environment

Typical Home Energy Usage

Appl 11% Lights 6% DHW 21% Htg & AC 62%

DHW 21%

Typical Home Energy Usage With a Geothermal System

Appl 11% Lights 6% Htg & AC 62% DHW 12% Appl 11% Lights 6% Htg & AC 18% Free Earth Energy 53%

System Materials & Components • Ground loop – Plastic pipe – high density polyethylene which is a higher grade than natural gas pipelines – Standard 50yr warranty on pipe from Manufacturer – Heat fusion method of joining pipe & fittings – very reliable method which makes one continuous pipe – Antifreeze heat transfer solution-Food grade – Small pumping station-low energy consumption and reliable components – 200 year theoretical life expectancy of buried pipe

Which Type of Ground Loop?

• All loops are sized for the same results. – Each produces about the same annual operating costs.

• Choose the most economical loop to install

Which Type of Ground Loop?

• Closed loop - Vertical, horizontal, and pond – Contains 100-150 gallons of fluid • Open loop – Uses ground water from well – Requires water flow of approximately 1.5 – 2 gallons per minute per nominal ton – Average system uses 500,000 gallons of water/year

Surface Water/Pond Loops • Least expensive • Typically requires 1/4 acre pond at least 10 12 feet deep Concrete Blocks for weight Nylon Cable Ties to secure blocks 4 ft between coils 300 ft coil per ton separated by scrap pipe Reverse Return Header 3 foot separation Heavy Duty Plastic Safety matting Nylon Cable Ties to secure Netting and bricks 8-10 Bricks for weight 300 ft slinky coil per ton Traditional Coiled Pond Loop - Southern Climates High Efficiency Slinky/Matt Pond Loop - Northern Climates

Single plate / 6 Ton unit 4 – 8 Ton plates / 32 Tons

Horizontal Loop Configurations

Horizontal Loops

• Normally can be less expensive • Typically requires 300 400 foot of trench per ton • Or 600-800 feet of pipe per ton 2 ft Tw o-Pipe Tw o-Pipe 2 ft Four-Pipe Back-Hoe Loops Four-Pipe Trenched Loops 2 ft Six-Pipe Extended Slinky

Horizontal loop / fusion

Vertical loops

• Requires less area • Typically 3-6 bores of 150-200 feet deep per bore • One bore per ton of required load • Sealed with grout to prevent contamination of ground water One Pair Two Pair When Loops are shallower than one ton per loop Series/Parallel One Pair

Vertical loop

Geothermal Equipment Options

Free and Renewable Energy

150 ft .

Earth’s Unlimited Energy Source Energy Available: 300,000 Kwh 120Kwh demand 40 ft.

100 ft.

Geothermal Sources

• 1. www.geoexchange.com

• 2. www.

igshpa

.okstate.edu

(training) • 3. www.geocomfort.com

(training)