Abstract: The reactor core includes at least one module, a solid neutron moderator, and a liquid neutron moderators. Each module contains a casing, at least one heat pipe, one fuel element and thermal insulation. The heat pipe comprises a casing, a wick, and a coolant. The fuel element is made of nuclear fuel, arranged along an evaporation area of the heat pipe, around the heat pipe casing, in thermal contact with the heat pipe casing, and enclosed in a can. Liquid metals are used as the coolant of the heat pipe. Thermal insulation is arranged between the can and the module casing. At least one hole is made in the solid neutron moderator. Each module is arranged within a respective hole of the solid neutron moderator. The space between the module casing and the solid neutron moderator is filled with a liquid neutron moderator.

Abstract: A nuclear reactor core includes at least one module, a solid neutron moderator, and liquid neutron moderator. Each module comprises a housing, at least one heat pipe, at least one fuel element, casing, and thermal insulation. The heat pipe comprises a housing, wick, and evaporating coolant. The fuel element includes a shell and nuclear fuel. An evaporation zone of the heat pipe and the fuel elements are enclosed by the casing. The casing is filled with a liquid coolant. Liquid metal, for example, lithium, calcium, lead, and/or silver, is used as the heat pipe coolant and the liquid coolant. The thermal insulation is arranged in a space between the casing and module housing. The solid neutron moderator has at least one hole, wherein at least one module is located. A space between the solid neutron moderator and module is filled with the liquid neutron moderator.

Abstract: The reactor core includes at least one module, solid and liquid neutron moderators. The module contains a casing, at least one heat pipe, one fuel element and thermal insulation. The heat pipe is in the shape of a casing with a wick and contains a coolant. The fuel element is made of nuclear fuel, arranged in the evaporation area of the heat pipe around its casing in thermal contact with it, and enclosed in a can. Low-melting metals with a high boiling point are used as the coolant of the heat pipe. Thermal insulation is arranged between the can and the casing of the module. At least one hole is made in the solid neutron moderator, in which at least one module is arranged. The space between the casing of the module and the solid neutron moderator is filled with a liquid neutron moderator.

Abstract: A nuclear energy reactor core includes at least one module, solid and liquid neutron moderators. The module comprises the housing, at least one heat pipe, at least one fuel element, casing and heat insulation. The heat pipe is configured as the housing and wick, and comprises the evaporating coolant. The fuel element consists of the shell and nuclear fuel. The heat pipe evaporation and fuel elements are enclosed into the casing filled with the liquid coolant. The high-melting hot metals, for example, lithium, calcium, lead, silver, are used as the heat pipe coolant and liquid coolant of the casing. The heat insulation is arranged in the space between the casing and module housing. The solid neutron moderator has at least one hole, wherein at least one module is located. The space between the solid neutron moderator and module is filled with the liquid neutron moderator.