Thermal conductive cylinder installed with U-type core piping and loop piping

1. A thermal conductive cylinder for being installed within a thermal storage body ( 500 ) composed of a natural thermal storage body, the natural thermal storage body including one of a shallow surface of the earth, a body of water, and artificial objects in a solid, gaseous, or liquid state;

wherein the thermal conductive cylinder is installed with a plurality of U-type piping ( 100 ) and constructed so that a thermal insulation is present between a fluid inlet terminal and a fluid outlet terminal of each of the plurality of U-type piping ( 100 ) so as to prevent thermal energy loss because of thermal conduction between adjacent U-type piping sections of the inlet terminal and the outlet terminal on a same side when thermal conductive fluid with a temperature difference passes through;

wherein each of the plurality of U-type piping ( 100 ) is used for one or more of the following types of thermal conductive fluid ( 111 ) passing through, including:

1) liquid state fluid;

2) gaseous state fluid;

3) liquid to gaseous state fluid; and

4) gaseous to liquid state fluid,

wherein the U-type piping sections include two or more radially arranged U-type piping sections installed within the thermal conductive cylinder and radially arranged along a radius of the thermal conductive cylinder, such that one of the U-type piping sections is radially outward of another of the U-type piping sections with respect to said radius of the thermal conductive cylinder;

wherein the two or more radially arranged U-type piping sections are discrete from and have interior flowpaths that are not in communication with each other within the thermal conductive cylinder; and

wherein the plurality of U-type piping ( 100 ) are each made of a U-type tubular body for the thermal conductive fluid ( 111 ) to pass through, each of the U-type piping ( 100 ) has a separate first fluid inlet and outlet terminal ( 101 ) and a separate second fluid inlet and outlet terminal ( 102 ), the U-type piping sections near the first fluid inlet and outlet terminal ( 101 ) are adjacently installed, and the U-type piping sections near the second fluid inlet and outlet terminal ( 102 ) are arranged to be radially outward of the U-type piping sections near the first fluid inlet and outlet terminal ( 101 ) and to extend in an axial direction; and

wherein the thermal insulation includes a thermal insulating structure ( 400 ) made of a thermal insulating material with thermal insulating effects, the thermal insulating structure including one of a solid body, a flexible body, a foam body, and an enveloped colloid, gas, liquid, or vacuum structure, for being placed between the U-type piping sections near the first fluid inlet and outlet terminal ( 101 ) of each of the U-type piping ( 100 ) and the U-type piping sections near the second fluid inlet and outlet terminal ( 102 ) of each of the U-type piping ( 100 ); for substantially reducing thermal energy loss caused by thermal conduction between adjacent U-type piping sections of the first fluid inlet and outlet terminal ( 101 ) and the second fluid inlet and outlet terminal ( 102 ) on the same side of the U-type piping ( 100 ).

2. A thermal conductive cylinder as claimed in claim 1 , wherein the first fluid inlet and outlet terminal ( 101 ) of each of the U-type piping are adjacent each other and sections of said respective U-type piping extending from the first fluid inlet and outlet terminal ( 101 ) are surrounded by the thermal insulating structure ( 400 ).