F24T10/00	7	Geothermal collectors	F24T10/00	F24T10/00		635
F24T10/10	8	with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground	F24T10/10	F24T10/10		1600
F24T10/13	9	using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes	F24T10/13	F24T10/13		629
F24T10/15	10	using bent tubes; using tubes assembled with connectors or with return headers	F24T10/15	F24T10/15		1175
F24T10/17	10	using tubes closed at one end, i.e. return-type tubes	F24T10/17	F24T10/17		925
F24T10/20	8	using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells	F24T10/20	F24T10/20		1370
F24T10/30	8	using underground reservoirs for accumulating working fluids or intermediate fluids	F24T10/30	F24T10/30		838
F24T10/40	8	operated without external energy sources, e.g. using thermosiphonic circulation or heat pipes	F24T10/40	F24T10/40		360
F24T2010/50	8	{Component parts, details or accessories}	F24T10/00	F24T2010/50		396
F24T2010/53	9	{Methods for installation}	F24T10/00	F24T2010/53		774
F24T2010/56	9	{Control arrangements}	F24T10/00	F24T2010/56		470
F24T50/00	7	Geothermal systems&#160; (for producing mechanical power from geothermal energy&#160;F03G4/00)	F24T50/00	F24T50/00		646
F24T2201/00	7	Prediction; Simulation	CPCONLY	F24T2201/00		158
