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CT 100.11


- Counterflow heat exchanger for calorimetric analysis of exhaust gases from internal combustion engines
- GUNT-Software for data acquisition for calorimetric test included in CT 110


Technical Description

Determination of the thermal exhaust gas losses is essential when calculating an energy balance for internal combustion engines. Calorimetric measurement is an established method of doing this. It involves a largely complete and loss-free heat exchange between the exhaust gas and a cooling medium. 

The exhaust gas calorimeter consists of an insulated stainless steel tank, through which the exhaust gas flows from bottom to top. While doing this, the exhaust gas gives up its heat almost completely to a finned pipe with cooling water flowing through it. The pipe is arranged in loops to achieve the maximum possible heat exchange area. Relevant temperatures (water and exhaust gas inlet and outlet) and the flow rate of the water are recorded electronically and displayed digitally using a measuring amplifier. The measuring amplifier is connected to the CT 110 test stand using a data cable. This allows the measured data from the CT 110 to be stored and processed using software for data acquisition. 

The CT 100.11 is connected to a test engine (CT 100.20 - CT 100.23) using a heat-resistant exhaust gas hose.

Learning Objectives / Experiments

- determination of exhaust gas thermal output power given up
- determination of specific heat capacity of exhaust gas



[1] determination of the amount of heat contained in the exhaust gas from test engines
[2] calorimeter consisting of finned pipe heat exchanger and insulated tank
[3] instrumentation: 4 temperature sensors, flow meter 
[4] measuring amplifier with digital displays
[5] connection between engine and calorimeter using exhaust gas hose 
[6] GUNT-software for calorimetric test included in CT 110 software
[7] connection between measuring amplifier and CT 110 using data cable

Technical Data

- insulated, stainless steel
Finned pipe heat exchanger
- heat exchange area on exhaust gas side: 1,169m²
- heat exchange area on water side: 0,164m²
Measuring ranges 
- exhaust gas temperature: 2x 0…600°C
- water temperature: 2x 0…200°C
- flow rate: 0...600L/h

Dimensions and Weight
LxWxH: 570x570x1300mm (base unit)
LxWxH: 370x300x150mm (measuring amplifier)
Weight: approx. 105kg Required for Operation

230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase

Cold water connection 200L/h and drain

Scope of Delivery
1 calorimeter
1 measuring amplifier with digital displays
1 exhaust gas hose
1 data cable for connection to CT 110
1 manual

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