A fluid circuit, in particular for an aircraft, having at least a first pipe, a second pipe and a connecting fitting, each pipe having a connection end and extending along an axis X, the connecting fitting, movably mounted between the two pipes, being configured to mechanically connect the two connection ends, the connecting fitting having a connecting sleeve and a guide member formed on an outer surface of the connecting sleeve and configured to cooperate with a heater duct so as to guide it between the two pipes, the heater duct being configured to transmit heat to the pipes and to the connecting fitting so as to prevent them from icing up.

A fluid circuit, in particular for an aircraft, having at least a first pipe, a second pipe and a connecting fitting, each pipe having a connection end and extending along an axis X, the connecting fitting, movably mounted between the two pipes, being configured to mechanically connect the two connection ends, the connecting fitting having a connecting sleeve and a guide member formed on an outer surface of the connecting sleeve and configured to cooperate with a heater duct so as to guide it between the two pipes, the heater duct being configured to transmit heat to the pipes and to the connecting fitting so as to prevent them from icing up.

Techniques for determining a thermal condition of a pipeline include identifying a pipeline that carries a fluid at a steady-state temperature, where the pipeline includes a tubular conduit that includes a bore that carries the fluid, and a layer of insulation installed over an exterior surface of the tubular conduit; changing the steady-state temperature of the fluid by applying a thermal contrast to the pipeline; based on changing the steady-state temperature, detecting a thermal gradient between the fluid carried in the bore and at least one of the tubular conduit or the layer of insulation at a particular location of the pipeline; and based on the detected thermal gradient, determining a presence of at least one of water or water vapor between the exterior surface of the tubular conduit and the layer of insulation at the particular location of the pipeline.

The invention relates to a method for maintaining the temperature of fluid media in pipes even in the event of an interruption of the fluid media flow. In a first step, a heat reservoir layer (1) is produced comprising a latent heat reservoir material (2) and a matrix material (3). In a second step, the heat reservoir layer (1) is either arranged around a pipe (4) and subsequently encased with a heat damping material (5) or the heat reservoir layer (1) is brought into contact with heat damping material (5), whereby a heat reservoir damper composite (51) is obtained, and the pipe (4) is then encased with the heat reservoir damper composite (51) such that the heat reservoir layer (1) of the heat reservoir damper composite (51) lies between the pipe (4) and the heat damping material (5) of the heat reservoir damping composite (51).

The invention relates to a method for maintaining the temperature of fluid media in pipes even in the event of an interruption of the fluid media flow. In a first step, a heat reservoir layer (1) is produced comprising a latent heat reservoir material (2) and a matrix material (3). In a second step, the heat reservoir layer (1) is either arranged around a pipe (4) and subsequently encased with a heat damping material (5) or the heat reservoir layer (1) is brought into contact with heat damping material (5), whereby a heat reservoir damper composite (51) is obtained, and the pipe (4) is then encased with the heat reservoir damper composite (51) such that the heat reservoir layer (1) of the heat reservoir damper composite (51) lies between the pipe (4) and the heat damping material (5) of the heat reservoir damping composite (51).

An airbag hot wind heat-insulation device includes an airbag unit, a heat insulation unit, a hot air supply unit, a return air pipe and a control unit, wherein an airflow channel is formed inside the airbag unit, and the hot air supply unit communicates with the airflow channel, and the hot air supply unit sends hot air to the airflow channel, thereby heating and insulating the heated object configured with the airbag unit. The return air pipe connects the airbag unit and the hot air supply unit, and the return air pipe connects the end of the path along which the hot air flows along the airflow channel and the air inlet end of the hot air supply unit, and accordingly returns the hot air to the hot air supply unit to improve heating efficiency.

An airbag hot wind heat-insulation device includes an airbag unit, a heat insulation unit, a hot air supply unit, a return air pipe and a control unit, wherein an airflow channel is formed inside the airbag unit, and the hot air supply unit communicates with the airflow channel, and the hot air supply unit sends hot air to the airflow channel, thereby heating and insulating the heated object configured with the airbag unit. The return air pipe connects the airbag unit and the hot air supply unit, and the return air pipe connects the end of the path along which the hot air flows along the airflow channel and the air inlet end of the hot air supply unit, and accordingly returns the hot air to the hot air supply unit to improve heating efficiency.

A system for heating one or more sulfur transport and storage systems including a hot oil distribution system, a first transport line fluidly connecting one or more reboilers to an inlet on a heating jacket on a sulfur transport system, a second transport line fluidly connecting an outlet of the heating jacket on the sulfur transport system to an inlet on a heating coil in a sulfur storage system, and a third transport line fluidly connecting an outlet on the heating coil in the sulfur storage system to a return header on the hot oil distribution system.

A system for heating one or more sulfur transport and storage systems including a hot oil distribution system, a first transport line fluidly connecting one or more reboilers to an inlet on a heating jacket on a sulfur transport system, a second transport line fluidly connecting an outlet of the heating jacket on the sulfur transport system to an inlet on a heating coil in a sulfur storage system, and a third transport line fluidly connecting an outlet on the heating coil in the sulfur storage system to a return header on the hot oil distribution system.

Spa systems may be used all year round and in colder weather provide an enjoyable experience for users through the cold ambient outdoor temperature and the heated water of the spa. However, failures in respect of the water circulating pump and/or heater of the spa system either mechanically, electrically or through overall power outages mean the water in the spa system and its pipework can easily freeze if ambient conditions are cold enough leading to cracks in the spa system or pipes and hence leaks when the water thaws requiring costly repair or replacement of components or entire systems. Accordingly, a freeze protection system is provided that uses a backup thermal management system discretely or in combination with other backup systems. These freeze protection systems offering backup when mechanical failures, electrical failures etc. arise by providing thermal input to the spa system through alternate thermal paths and providing alarms.