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Geothermal Energy

Science – Society – Technology

Fig. 1 | Geothermal Energy

Fig. 1

From: Net-exergetic, hydraulic and thermal optimization of coaxial heat exchangers using fixed flow conditions instead of fixed flow rates

Fig. 1

Sketch of a coaxial geothermal heat exchanger with an outer radius of inner pipe (\({r}_{{i}}\)), an inner pipe thickness (\({\delta }\)), inner radius of inner pipe (\({\overline{r_i}}\)), an inner radius of outer pipe (\({r_a}\)) and an outer pipe radius of outer pipe (\({r_o}\)) as well as an inner pipe thermal conductivity (\({\lambda _p}\)) and an outer pipe thermal conductivity (\({\lambda _c}\))

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