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Printable version
| Name of technology example:
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Type
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| Geothermal Heating
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☐ Energy Efficiency
☑ Renewable Energy
☐ Alternative Methodology
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| Description
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Geothermal heating is the direct use of geothermal energy for heating applications. Humans have taken advantage of geothermal heat this way since the Paleolithic era. Approximately seventy countries made direct use of a total of 270 PJ of geothermal heating in 2004. As of 2007, 28 GW of geothermal heating capacity is installed around the world, satisfying 0.07% of global primary energy consumption. Thermal efficiency is high since no energy conversion is needed, but capacity factors tend to be low (around 20%) since the heat is mostly needed in the winter.
Geothermal energy originates from the heat retained within the Earth since the original formation of the planet, from radioactive decay of minerals, and from solar energy absorbed at the surface. Most high temperature geothermal heat is harvested in regions close to tectonic plate boundaries where volcanic activity rises close to the surface of the Earth. In these areas, ground and groundwater can be found with temperatures higher than the target temperature of the application. However, even cold ground contains heat, below 6 metres (20 ft) the undisturbed ground temperature is consistently at the Mean Annual Air Temperature and it may be extracted with a heat pump.
Source: http://en.wikipedia.org/wiki/Geothermal_heating
Geothermal heat can ideally be use for heating greenhouses.
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| Technology for the Application of
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| ☐ Solar
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☐ Biomass
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☐ Biofuel
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| ☐ Biogas
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☐ Wind
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☑ Geo-Thermal
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| ☐ Hydro
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☐ Energy Efficiency
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| ☐ Other: /
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| Primarily Relevant for the following Agricultural Value Chain Steps
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| ☐ Mechanization
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☐ Efficiency of Operation
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☐ Processing
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| ☐ Transportation
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☑ Controlled Atmosphere
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☑ Controlled Temperature
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| ☐ Mechanical Sorting
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☐ Preservation
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| ☐ Other: /
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| Primarily Relevant for the following Agricultural Value Chain Activities
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| ☐ Grinding
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☐ Hauling and conveying
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☐ Sorting
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| ☐ Seedbed Preparation
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☐ Milling
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☐ Tearing
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| ☐ Planting
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☐ Washing
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☐ Mixing
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| ☐ Pumping
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☑ Heating
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☑ Drying
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| ☐ Irrigation
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☐ Cooling
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☐ Animal feeding
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| ☐ Fertilizing
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☐ Venting
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☐ Animal health and Welfare
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| ☐ Pest Management
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☐ Lighting
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☐ Packing and branding
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| ☐ Cutting
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☐ Sanitation
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| ☐ Other: /
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| Primarily Implemented in the following Commodity Groups
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| ☐ Cereals
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☑ Fruits and vegetables
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☐ Nuts and berries
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| ☐ Forage
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☐ Dairy products
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☐ Meat products
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| ☐ Oil Seeds
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☐ Roots and Tubers
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☐ Eggs
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| ☐ Pulses
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☐ Fiber Crops
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☐ Forestry
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| ☐ Sugars
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☐ Stimulants
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☐ Spices
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| ☐ Other: /
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Region & Country of
Development
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N/A
☐ Africa
☐ South Asia
☐ East Asia & The Pacific
☐ Europe & Central Asia
☐ Latin America & The Caribbean
☐ Middle East & North Africa
☐ North America
☑ N/A: Region of development cannot be named
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Region & Country of
Current Deployment
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N/A
☐ Africa
☐ South Asia
☐ East Asia & The Pacific
☐ Europe & Central Asia
☐ Latin America & The Caribbean
☐ Middle East & North Africa
☐ North America
☑ N/A: Region of current deployment cannot be named
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Region & Country of
Potential Deployment
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N/A
☐ Africa
☐ South Asia
☐ East Asia & The Pacific
☐ Europe & Central Asia
☐ Latin America & The Caribbean
☐ Middle East & North Africa
☐ North America
☑ N/A: Any region with geothermal resources
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| Manufacturers
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| Economics
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| Technology Development Level
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| Required Maintenance Technical Level
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| Required Infrastructure for Deployment
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| Required Resources during manufacture
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| Required Resources during operation
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Deployment
Level
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| Deployment Capability and Potential
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| Requirements for Deployment
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| Relevance for Autonomy and Food Security
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| Environment Impacts (emissions)
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| Conformity with Bio- Cybernetic System Rules
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Yes;
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| Additional information / Comments
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No comments.
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| Internal Reference
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| Additional Links
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https://www.extension.org/pages/27790/geothermal-heat-for-greenhouses
http://geoheat.oit.edu/
http://geoheat.oit.edu/bulletin/bull26-1/art2.pdf
http://www.jardhitafelag.is/media/PDF/S14Paper029.pdf
http://www.hort.vt.edu/ghvegetables/documents/Greenhouse%20Heating_Energy/ChiassonGhGeotherma_tp118.pdf
http://www.newenergynexus.com/500/geothermal-greenhouse-heating
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