Study and demonstration of pressure wave-based leak detection in a district heating network

Valinčius, Mindaugas; Vaišnoras, Mindaugas; Кaliatka, Аlgirdas

doi:10.1080/15732479.2017.1330892

Cited by 24 publications

(13 citation statements)

References 11 publications

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“…The method of the negative pressure wave (NPW) is one of the most modern. Using this method, it is possible to track the appearance of a leak on the heating main without leaving the pipeline zone, while remaining at the central control station [6,7]. At the time of occurrence of leakage of fluid in the pipeline, dilution waves appear.…”

Section: Astesj Issn: 2415-6698mentioning

confidence: 99%

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Detection the Places of the Heat Energy Leak on the Underground Thermal Pipelines Using the Computer System

Zhuravska¹,

Lernatovych²,

Burenko³

2019

Adv. sci. technol. eng. syst. j.

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The purpose of this paper is to improve the thermographic method for detection the places of heat energy losses on the urban underground thermal pipelines using the computer system. This goal was achieved by building a heat map of the surveyed heating main with data layering directly on a computer map of the area, which can be accessed from a mobile device by authorization via the Internet (profile on the social network Google, Facebook, Twitter, etc.). An analytical model was proposed for converting the temperature values measured over the underground heating main by a non-contact digital pyrometer to an image of the RGB color model using the parameters of the HSV color model. The implementation of the integrated Google technologies complex (Google Firebase, Firebase Authentication, and Google Maps) in the technological process of urban housing and public services was realized. The information-measuring computer system (IMCS) was developed. The proposed improvements in the thermographic method provided independently from each other work of different service teams due to the exchange of data between structural units through the cloud data storage. The results of the practical research allowed detecting the place of the underground breakthrough of the heat pipe quickly, to position the repair equipment over the accident section precisely using the GPS module on the mobile device. Thus, the size of the dug road section was minimized, material resources were saved. The experimental studies carried out confirmed the correctness of the theoretical assumptions.

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Section: Astesj Issn: 2415-6698mentioning

confidence: 99%

“… It is compact, convenient and not harmful for the operator health, unlike the equipment described in [5][6][7][8][9].…”

Section: Problem Formulationmentioning

confidence: 99%

Detection the Places of the Heat Energy Leak on the Underground Thermal Pipelines Using the Computer System

Zhuravska¹,

Lernatovych²,

Burenko³

2019

Adv. sci. technol. eng. syst. j.

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“…Moreover, the heat losses have a slight variation with a time, as a network temperature and the ground temperature have generally minor variations. Since a DH network also suffer from water losses due to leaks caused by pipeline failures [20], these techniques are relevant and are one of the heat losses reduction measures to implement into a DH system. Meanwhile, a reduction of 19.4 •C in the average return temperature results in reducing the heat network heat losses by 10% [21].…”

Section: Introductionmentioning

confidence: 99%

Minimizing the supply temperature at the district heating plant – dynamic optimization

2019

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The constraint contains two elements, namely the heat losses and the electricity consumption for pumping at the producer. The aim was to achieve the lowest acceptable costs in an operation. The options with the supply temperature at the area starting point set to 80/60, then 60/40, and eventually 50/30 (low temperature, 4th generation district heating) were tested. The balance between the savings due to lower heat losses and the electricity consumption of pumps could be performed to assess the economic viability of the solution. This means that if the electricity price is sufficiently high, the model will always choose to minimize electricity consumption and thereby, maximise the profit from high temperature difference. Results concerning heat losses consider both experiences of proper insulation of pipes with variety of design outdoor temperatures (DOTs) and long term measurements from a pump station for district heating (DH) network in Canberra, Australia. We also noted that the heat energy tariffs and purchase price of electricity affect a lot optimal configuration of a DH system. For the best scenario, solutions are obtained that reach over 12% of the available saving potential after calculating 11 equations. Knowing that the policy is updated on a case study base, this is considered a promising result.

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“…Controlling district heating networks based on distributed metering systems [11] and providing high service reliability [12] are considered primary requirements for district heating integration in future energy grids. In the case of accidents, service should be restored as quickly as possible with minimal impact 10 on the thermal comfort of customers.…”

Section: Introductionmentioning

confidence: 99%

Centralized control of district heating networks during failure events using discrete adjoint sensitivities

Pizzolato

Sciacovelli

Verda

2019

Energy

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Study and demonstration of pressure wave-based leak detection in a district heating network

Cited by 24 publications

References 11 publications

Detection the Places of the Heat Energy Leak on the Underground Thermal Pipelines Using the Computer System

Detection the Places of the Heat Energy Leak on the Underground Thermal Pipelines Using the Computer System

Minimizing the supply temperature at the district heating plant – dynamic optimization

Centralized control of district heating networks during failure events using discrete adjoint sensitivities

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