The present disclosure relates generally to duct liner insulation products for curvilinear ducts, and more specifically relates to methods and materials to universally fit duct liner insulation for lining oval ducts in air conditioning, heating, and ventilating (HVAC) systems. A duct liner insulation for a curvilinear duct is provided that includes an insulation layer configured to line an interior surface of a curvilinear duct when installed within the curvilinear duct. The duct liner insulation also includes an elastically deformable layer configured to compress the insulation layer against the interior surface of the curvilinear duct when installed within the curvilinear duct such that the insulation layer extends substantially uniformly around an inner periphery of the curvilinear duct.

The present invention relates to a composite coating for an inner tube delimiting a passageway for a fluid for obtaining a pipe for conveying fluids in HVACR systems.

The present invention relates to a composite coating for an inner tube delimiting a passageway for a fluid for obtaining a pipe for conveying fluids in HVACR systems.

The invention relates to an expansion joint (1) for joining two adjacent parts of a pipe. The expansion joint (1) comprises an expansion bellows (5), an expanded wall (2) and an inner sleeve assembly (8). The expanded wall (2) comprises a first wall part (3) and a second wall part (4), wherein the first wall part (3) and the second wall part (4) are spaced apart from each other axially by an axial gap. The expansion bellows (5) is connected to the first wall part (3) and to the second wall part (4) such that the axial gap between the first wall part (3) and the second wall part (4) is closed and such that the first wall part (3) and the second wall part (4) are connected flexibly. The expanded wall (2) and the inner sleeve assembly (8) limit at least one sealed chamber (9, 10) between each other, and the at least one sealed chamber (9, 10) is filled by a first gas.

The invention relates to an expansion joint (1) for joining two adjacent parts of a pipe. The expansion joint (1) comprises an expansion bellows (5), an expanded wall (2) and an inner sleeve assembly (8). The expanded wall (2) comprises a first wall part (3) and a second wall part (4), wherein the first wall part (3) and the second wall part (4) are spaced apart from each other axially by an axial gap. The expansion bellows (5) is connected to the first wall part (3) and to the second wall part (4) such that the axial gap between the first wall part (3) and the second wall part (4) is closed and such that the first wall part (3) and the second wall part (4) are connected flexibly. The expanded wall (2) and the inner sleeve assembly (8) limit at least one sealed chamber (9, 10) between each other, and the at least one sealed chamber (9, 10) is filled by a first gas.

The present disclosure relates generally to duct liner insulation products for curvilinear ducts, and more specifically relates to methods and materials to universally fit duct liner insulation for lining oval ducts in air conditioning, heating, and ventilating (HVAC) systems. A duct liner insulation for a curvilinear duct is provided that includes an insulation layer configured to line an interior surface of a curvilinear duct when installed within the curvilinear duct. The duct liner insulation also includes an elastically deformable layer configured to compress the insulation layer against the interior surface of the curvilinear duct when installed within the curvilinear duct such that the insulation layer extends substantially uniformly around an inner periphery of the curvilinear duct.

The present disclosure relates generally to duct liner insulation products for curvilinear ducts, and more specifically relates to methods and materials to universally fit duct liner insulation for lining oval ducts in air conditioning, heating, and ventilating (HVAC) systems. A duct liner insulation for a curvilinear duct is provided that includes an insulation layer configured to line an interior surface of a curvilinear duct when installed within the curvilinear duct. The duct liner insulation also includes an elastically deformable layer configured to compress the insulation layer against the interior surface of the curvilinear duct when installed within the curvilinear duct such that the insulation layer extends substantially uniformly around an inner periphery of the curvilinear duct.

A thermal insulating sleeve liner for fluid flow devices such as valves and piping used in severe industrial applications is preferably additively manufactured (e.g., by 3D printing) to fit into the bore of a protected fluid flow device. Internal interstices and/or external ribs provide added thermal insulation. An integrally formed end-lip or a separate end-cap secures and/or locates the sleeve liner within the protected fluid flow device between different diameter distal and proximal portions of the bore. If internal interstices are sealed they can be vacuumed or pressurized to enhance thermal insulating properties. Fitted dimensions are sufficiently small to prevent ingress of thermally conductive particles circulating in use within the flow path of the protected flow device. A pressure equalizing aperture can be provided on or through the sleeve if needed in some applications.

A thermal insulating sleeve liner for fluid flow devices such as valves and piping used in severe industrial applications is preferably additively manufactured (e.g., by 3D printing) to fit into the bore of a protected fluid flow device. Internal interstices and/or external ribs provide added thermal insulation. An integrally formed end-lip or a separate end-cap secures and/or locates the sleeve liner within the protected fluid flow device between different diameter distal and proximal portions of the bore. If internal interstices are sealed they can be vacuumed or pressurized to enhance thermal insulating properties. Fitted dimensions are sufficiently small to prevent ingress of thermally conductive particles circulating in use within the flow path of the protected flow device. A pressure equalizing aperture can be provided on or through the sleeve if needed in some applications.

Provided herein is a liner that can be loosely inserted in process pipe to form a lined pipe and to decrease the rate of heat transfer between process fluids flowing through the liner and the process pipe. The liner provided herein can reduce applied thermal loading on the outer pipe resulting from, for example, turbulent mixing between fluids having different temperatures (with or without stratification), circumferential thermal gradients, and/or longitudinal thermal gradients. An annulus between the process pipe and liner can be at least partially filled by process fluids, thereby creating a thermal buffer to further decrease the rate of heat transfer between the fluids and the process pipe.