Comprehensive definition of thermal losses taking into account to the conditions of thermal networks

Abstract

Abstract.The article presents an analytical evaluation of heat losses through the thermal insulation of pipelines, taking into account the actual operating conditions of thermal networks. Calculations confirmed a significant influence of the main operational factors on the increase in heat loss and the possibility of energy saving in heating networks.

Economic feasibility of an energy efficiency project for a steam distribution system in a chemical industry

“…Depending on thermal insulation conditions, the actual heat loss may be at least 150% greater than that originally estimated (TSYGANKOVA; DMITRIENKO, 2014;KRUCZEK, 2013). The insulation of the steam distribution system of the Efficient Industry is about 40 years old.…”

“…Those who approach the subject in existing systems, do so with the aid of measuring devices, laboratory tests, and mathematical simulations, from which they generate data to evaluate heat loss in the operational condition of facilities (KRUCZEK, 2013;TSYGANKOVA;DMITRIENKO, 2014). Kruczek (2013) determined the annual energy loss of a steam distribution system by measuring the external temperature of thermal insulation using a thermovision camera, as well as laboratory tests to define the emissivity coefficient of the pipe cover.…”

“…Kruczek (2013) determined the annual energy loss of a steam distribution system by measuring the external temperature of thermal insulation using a thermovision camera, as well as laboratory tests to define the emissivity coefficient of the pipe cover. Tsygankova and Dmitrienko (2014), in turn, used mathematical modeling to calculate the energy loss, considering the operating conditions of the thermal insulation and heat conductors.…”

“…ijmp.jor.br v. 8, n. 4, October -December 2017ISSN: 2236 Both studies focus on heat loss exclusively through thermal insulation (KRUCZEK, 2013;TSYGANKOVA;DMITRIENKO, 2014). Therefore, no studies that identify and estimate heat loss through thermal insulation and steam traps were found.…”

“…-Energy loss in the distribution system could be higher, since the heat emission rate considered through thermal insulation was conservative compared to the studies conducted by Tsygankova andDmitrienko (2014), andKruczek (2013). Thus, on-site measurements of the operating conditions of thermal insulation should be made;…”