Thermodynamics > Compact steam power plants




The unit is designed to simulate modern steam power plant. Main components consist of a feed water system, a small industrial boiler, a steam turbine, a generator and lamp load, a condenser with a condensate tank and a pump, and a cooling tower. Accessories such as fuel tank, fuel flow meter, feed water meter, and a stack are also included. Instruments are provided for measurement of pressures, temperatures, output voltage and currents.

The boiler uses diesel fuel to generate saturated steam at a set pressure to run the steam turbine. Exhaust from the turbine is saturated vapor at the atmospheric pressure. The vapor is condensed in a condenser and condensate is returned to the feed tank for reuse. A cooling tower circulates cooling water to the condenser. Public water is treated and stored in the feed tank. A pump draws water from the feed tank to the boiler.

The saturated steam from the boiler may be superheated by a super heater (optional). In this case the turbine is also modified for superheated steam run.

An alternator is connected to the turbine through a synchronous belt-gear system. The inverter converts alternator DC output to AC for lamp load.

Safety features include those for boiler, turbine over speed, guard and safety switch.

A touch screen computer with an interface unit and software are provided for data display and analysis.

Instruments are provided for measurement of relevant data. Instruction manual is also included.

  • Measurement of feed water and fuel flow rates.


  • Boiler efficiency, turbine generator efficiency, and overall power plant efficiency.


  • Effect of superheated steam on turbine efficiency (optional)


  • Condenser heat transfer efficiency.


  • Cooling tower efficiency.


  • Rankine cycle efficiency.

The plant set consists of:  
Boiler Unit  
- Type: Vertical, water tube 
- Rated heat output: 188 kW (162,000 kcal/h) 
- Equivalent evaporation: Approx. 300 kg/h steam 
- Maximum working pressure: 10 kg/cm2 (0.98 MPa) 
- Measuring instruments: Pressure gauge for steam outlet 
 : Temperature sensors (3) for feed water, boiler outlet and exhaust stack 
- Safety devices: Safety valve 
 : Level gauge and switch at boiler 
 : Low level alarm 
- Boiler accessories: Steam separator 
 : Steam pressure regulator 
 : Feed water pump 
 : Stack, 2 x 2.4 m with 2 elbows 
  • Burner:
- Type: Forced draft, pressure atomized 
- Control: On-Off 
- Fuel: Diesel or kerosene 
  • Fuel system
: Fuel tank, fuel strainer and fuel meter 
  • Feed water system
: Resin filter for public water. 
 : Soft water tank 
 : Water meter 
 : Stopwatch 
  • De-ionized chemical
: Automatic feed system 
  • Power supply
:380 V, 3 Ph, 50Hz. Other power supply is available on request. 
Steam Turbine  
  • Technical data:
- Type: Single stage, twin nozzle impulse turbine 
- Construction: Vacuum cast inconel wheel 
 : Stainless steel casing, shaft and nozzle 
 : Ceramics and steel bearing 
- Maximum mechanical output: Approx. 1.5 kW (required TH137-016) 
- Maximum electrical output: Approx. 0.9 kW 
- Maximum speed: Approx. 33,000 rpm 
- Exhaust pressure: Atmospheric 
  • Measuring instruments
- Pressure: Pressure gauge for steam inlet 
 : Water manometer for turbine outlet 
- Sensor with digital display: Speed for turbine 
 : Temperature for steam inlet and outlet 

Generator and Lamp Load

  • Technical data:
- Alternator: 1.5 kW power 
- Inverter: 220V, 1 ph, 50Hz 
- Lamp load: 1400W, with individual switch 
  • Measuring instruments:
- Sensor with digital display: Inverter voltage and current 

Condenser (TH 102-013)

  • Description:

The unit allows a study of heat transfer in a heat exchanger as well as recover condensate for reuse. The unit consists of a counter flow steam tube heat exchanger and instruments for measurement of temperatures, cooling water flow rate.

  • Technical data:
- Type: Steam tube 
- Accessories: Cooling water pump 
 : Condensate transfer pump 
 : Condensate tank 
 : Strainer 
  • Measuring instruments:
- Flow rate: Water meter 
- Sensor with digital display: Temperature for condensate, 
 cooling water inlet and outlet 

Cooling Tower (TH 137-014)

  • Description:

This is an educational unit for recovering of condenser cooling water as well as studying of cooling tower efficiency. A cooling tower is recommended to recycle cooling water in the case TH102-013 condenser is used. The unit consists of a cooling tower unit, a storage tank, a circulating pump and temperature gauges.

  • Technical data:
- Cooling tower capacity: Up to 30 RT 
- Circulating pump  
  • Measuring instruments:
- Sensor with digital display: Temperature for wet bulb 

 Shipping dimensions and weight: One 20 ft. containers

  • TH137S
Learning Software
 to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.
  • TH100-021
Digital flue gas analyzer (testo300 or equal) for O2 and CO contents
  • TH100-022
Portable pH and TDS meter
  • TH100-023
Hardness water tester
  • TH101-021
Sand filter for water with suspended materials
  • TH101-022
Carbon filter for water with odour or rust
  • TH135-005EBA
Electric boiler instead of diesel boiler.
 - Equivalent evaporation          : Approx. 300 kg/h steam
 - Maximum working pressure         :  10 kg/cm2 (0.98 MPa)
  • Other type of fuel is available (i.e. LPG) on request.
  • TH136-016
Turbine mechanical power measurement using hydraulic dynamometer with torque sensor.
  • TH137-020
Electric Super Heater

The unit provides superheated steam for other use such as for a stream turbine. Saturated steam from the boiler is further heated in the electric super heater. Instruments are provided for Measurement of temperature and pressure. The test is to be carried out at low steam rate and compare thermal efficiency for saturated and superheated steam.

 Typical experiment
 - Effect of superheated steam on prime mover efficiency
 Technical data
 - Capacity     : 12 kW
 - Measuring instruments     : Temperature sensor (1) for superheater steam outlet
 - Temperature control unit to limit temperature of superheat steam to not more than 250°C
 - Power supply         : 380 V, 3 Ph, 50Hz.
  • TH137-050
Computer Interface (computer not included)
 This includes TH137S and significant sensor(s) instead of analog measuring instrument(s), data acquisition (capture, display, graph and/or data export),
 additional software function for real-time data logging with computer interface unit and WiFi feature for data logging and real-time display remotely on smartphone (iOS and Android)
  • TH137-060
Computer Control (computer not included)
 This includes TH 137-050 with the additional accessories for control function and additional software function for equipment controls by computer
TH136SLearning Software
 to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.