Design of Water-Cooled Calorimeter for Electric Motor's Power Loss Measurement

Devi Geetha Nair, Shayan Daryabin, Steven Jannasch, Ari Haavisto, Antero Arkkio

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1 Citation (Scopus)
112 Downloads (Pure)


The paper presents the design process of and measurement possibilities with a water cooled, balanced calorimeter for the power loss measurement of an induction motor. The tested motor is a totally enclosed fan-cooled cage induction motor with efficiency of 92%. To create an optimal design, aspects of heat-leakage and measurement times are considered early in the design stage. Coupled heat and air-flow simulations with computational fluid-dynamic capabilities of the 3-D geometry of the calorimeter are carried out to verify the effectiveness of the chosen design parameters. Calorimetric measurements of the power loss of the motor at different operating points are presented, and compared with the traditional input-output method. The calorimeter achieves extended measurement accuracy of 2.08% in measurement of 2.6 kW of power loss.

Original languageEnglish
Title of host publicationProceedings of the 2018 23rd International Conference on Electrical Machines, ICEM 2018
Number of pages7
ISBN (Electronic)9781538624777
Publication statusPublished - 24 Oct 2018
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Electrical Machines - Ramada Plaza Thraki, Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018
Conference number: 23


ConferenceInternational Conference on Electrical Machines
Abbreviated titleICEM
Internet address


  • Calorimetry
  • Electric motors
  • Measurement techniques
  • Power measurement

Fingerprint Dive into the research topics of 'Design of Water-Cooled Calorimeter for Electric Motor's Power Loss Measurement'. Together they form a unique fingerprint.

Cite this