The definition of the heat losses from sections of main heat pipes, the method of Etalon

• Дата: 2017
• Автори: Цаканян, О. С., Голощапов, В. Н., Кошель, С. В., Ганжа, Н. Г.
• Формат: Стаття
• Мова: Russian
• Опубліковано: Journal of Mechanical Engineering 2017
• Теми: heat loss; measurement; standard; tubing; УДК 53.084; 536.628.1; тепловые потери; измерение; эталон; трубопровод.; теплові втрати; вимірювання; еталон; трубопровод
• Онлайн доступ: https://journals.uran.ua/jme/article/view/96730
• Назва журналу: Journal of Mechanical Engineering

Currently, thousands of kilometers of heat pipes operated with worn insulation. A significant part of heat energy is lost to the environment. To measure the magnitude of heat losses on the pipeline very difficult, and the accuracy of measurements using the current methods depends on seasons, temperature and humidity, coolant temperature, state of heat insulation and other factors. The developed measurement technique and design of the measuring device allows to determine the level of heat loss in any pipe section regardless of the type of thermal insulation. The measuring device is a mounted on the tube housing with screens on the inner surfaces and openings top and bottom for sensors measuring temperature and air flow, which determines the heat loss into the environment. The device is pre-calibrated in the laboratory using standard heat capacity in which it is uniformly distributed over the surface, simulating the pipeline. The benchmark is a model of the pipeline section containing the heater and integral temperature sensor. The presence of screens and good insulation of the device allows you to convert all radiant heat energy in the convection. This allows to take into account all heat losses of the pipeline. Changing the diameter of the holes in the end caps of the device, it can be used to measure the heat losses from the pipelines of various diameter.