TRT Analysis — Interactive interpretation

Interactive analysis of thermal response tests

User manual
3.0
Version
October 2026
www.trtanalysis.com

Table of Contents

  1. Chapter 1Foreword — What to do with an interrupted test?A thermal response test is the only in-situ measurement that ties the design of a borehole field to the ground it will be drilled into.
  2. Chapter 2How to citeHow to cite TRT Analysis and its manual: the reference with its Zenodo concept DOI, which always resolves to the latest version, and the methods behind it.
  3. Chapter 3Feature overviewTRT Analysis version 3.0 reads a thermal response test for undisturbed ground temperature, thermal conductivity and effective borehole resistance.
  4. Chapter 4Quick startTRT Analysis is one of the three modules of the Analysis Suite, which are installed together and share a single window.
  5. Chapter 5Saving, loading and exportingSaving and reopening a TRT interpretation: one .ghe file keeps the measured data, phase boundaries, slider positions and both sets of results.
  6. Chapter 6Project descriptionThe Project description panel of TRT Analysis: project identity, site, client and field notes, kept with the data so each result stays tied to its test.
  7. Chapter 7Thermal response test dataThe Thermal response test data step imports the CSV record and lets you isolate its circulation, heating and recovery phases.
  8. Chapter 8Undisturbed temperatureThree methods identify the undisturbed ground temperature (Tg); one of them also yields the mean annual ground temperature (Ta).
  9. Chapter 9Heat carrier fluidThe heat carrier fluid circulated during the test sets the flow regime in the pipes and the heat it carries along the loop.
  10. Chapter 10Test boreholeThe Test borehole panel describes the instrumented borehole of the test, as it was designed and built: its dimensions, its pipes and its grout.
  11. Chapter 11Analysis with first-order approximations (FOA)The first-order approximation fits a line to the TRT heating phase, yielding ground conductivity (λs) and an experimental borehole resistance (Rb*).
  12. Chapter 12Analysis with the short-term g-functionThe short-term g-function model reconstructs the test borehole's response from the first minutes of heating, not just late times.
  13. Chapter 13ConsoleThe TRT Analysis console: phase statistics, undisturbed temperatures, FOA regression and short-term g-function results, updated live as you work.
  14. Chapter 14ReferencesThese references document TRT Analysis's methods: line-source slope, recovery-phase analysis, p-linear averaging and the neural-network model.