| Abstract |
The paper will propose an introduction to the heat pump technology applied to geothermal space cooling and give examples of how it can be used. Geothermal ground source heat pumps are currently the most widespread form of geothermal utilization. They usually require rather low enthalpy geothermal resources and can be used for both heating and cooling purposes as their cycle is reversible. Such equipment required a significant electrical input. On the other hand, geothermal heat pumps for cooling purpose is something completely different. Instead of using electricity for the heat pump compressor, like in a normal cooling machine or a refrigerator, the heat from a geothermal resource is used as the driving energy in an absorption heat pump, often named geothermal absorption chillers. Market prospects for residential and space cooling indicate that a steady increase can be expected in the coming years. The paper will indicate potential cooling demand in various places in around the African rift where geothermal energy is available. In addition to presenting and comparing the most common cooling methods, a basic business case will be developed. |