Method and system for determining heat loss in a service line of a district energy system

EP4522958A1Pending Publication Date: 2025-03-19GRUNDFOS HLDG
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Patent Information

Application Number
EP2023727470
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-05-12
Filing Date
2023-05-11
Publication Date
2025-03-19

AI Technical Summary

Technical Problem

District energy systems lack effective methods for inspecting service lines, which are often located on private property and lack electrical detection systems, making it difficult to detect thermal losses and faults like insulation deterioration or leakage, especially when detailed network data is unavailable.

Method used

A computer-implemented method that uses sensor data from service lines to determine thermal losses by obtaining measured temperature and flow data, forming equations relating these with thermal loss parameters, and computing solutions without requiring a detailed network model, allowing for early detection of faults and planning maintenance.

Benefits of technology

Enables the calculation of thermal losses in service lines directly from consumer data, facilitating early fault detection and maintenance planning even with modest knowledge of the network, reducing the need for detailed data on pipe dimensions and heat loss coefficients.

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Abstract

A computer-implemented method for determining thermal loss in a district energy grid, the district energy grid comprising one or more supply lines and a plurality of service lines for transporting a fluid to a plurality of consumers, each supply line feeding the fluid into a plurality of service lines and each service line connecting an consumer with one of the one or more supply lines, the method comprising: receiving measured sensor data from one or more sensors associated with one or more selected service lines of the plurality of service lines; determining, from the received sensor data, respective observed fluid temperatures and observed fluid flows of the transported fluid received at respective points in time via respective ones of said one or more selected service lines; obtaining a set of equations, the set of equations comprising a plurality of equations relating the observed fluid temperatures and the observed fluid flows with thermal loss parameters indicative of thermal losses of respective ones of said selected one or more service lines, computing a solution of the set of equations and computing a result value of at least a first thermal loss parameter indicative of a thermal loss of a first service line of said selected one or more service lines from the computed solution of the set of equations.
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