Thermodynamics > Mini steam power plants




This equipment is designed as a table top miniature modern day power plant for educational purpose.

A pump supplies water from a feed tank to a small gas fired boiler. The saturated steam can be superheated by an electric superheater (optional). The steam is throttled to the turbine. Exhaust from the turbine is condensed in a water-cooled condenser. Condensate is collected in a graduated beaker and returned to feed water tank by a pump. A small DC generator is connected to the turbine by a belt, and electrical load is applied. The dynamometer is provided for mechanical power measurement. The unit requires outside water supply. Condenser water cooling unit is available (optional).

Instruments are provided for monitoring and controlling of plant operation and performance as well as for safety. The unit is on a steel frame with adjustable footings.

Instruction manual is also included.

  • Thermodynamic process

  • Fuel consumption

  • Power generation

  • Efficiencies of boiler, turbine, condenser heat transfer and   overall plant.

  • Effect of superheated steam on efficiency (optional).

  • Effect of turbine negative exhaust pressure (optional)

  • Heat balance and energy utilization.

  • Rankine cycle efficiency.

  • Boiler
- Type : Fire tube vertical boiler
- Equivalent evaporation : Approx. 7 kg/h steam
- Maximum working pressure : 5 kg/cm2 (0.49 MPa)
  • Boiler accessories
: Steam separator, electric feed pump, safety valve, level gauge, and low-level alarm
  • Fuel
: Liquefied Petroleum Gas (LPG)
  • Feed water tank
: Stainless steel with level gauge
  • Steam turbine
- Type : Single stage impulse turbine
- Construction : Vacuum cast Inconel wheel
: Stainless steel casing, shaft and nozzle
- Maximum speed : Approx. 26,000 rpm
  • Mechanical power system
: Mechanical brake dynamometer
  • Electrical power system
: DC generator with resistive load
  • Condenser
: Shell and tube type
  • Maximum plant output
- Saturated steam : Mechanical approximately 10 W
: Electrical approximately 4 W
- Superheated steam (optional) : Mechanical approximately 15 W
: Electrical approximately 6 W
  • Safety features
: Turbine speed limit.
: Emergency switch.
  • Accessories
: Electric condensate transfer pump and boiler cleaning kits
  • Measuring instruments
- Pressure : Pressures gauge for boiler steam outlet
: Water manometer for turbine exhaust
- Flow rate : Flow meters for boiler fuel, condenser cooling water
- Condensate measurement : Graduated beaker and stop watch
- Sensors with digital displays :  Temperatures for boiler feed water, boiler steam outlet, steam turbine inlet and outlet
, condensate, cooling water inlet and outlet and exhaust stack.
: Turbine speed
: Dynamometer torque
: Generator voltage and current
  • Power supply
: 220 V, 1 Ph, 50Hz. Other power supply is available on request.

Net (unassembled) Shipping Dimensions WxLxH:

70 x 122 x 155 cm

Net Weight: Approx. 105 kg

  • TH130S
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 for O2 and CO content.
  • TH120-001
Fuel tank (Thailand market only)
 LPG tank (4 kg) with pressure regulator
  • TH120-005EBA
Mini Electric Boiler instead of gas fired boiler. By using electric boiler, the boiler and overall plant efficiency experiments are excluded.
 In this case LPG tank with pressure regulator and gas rotameter are not required.
- Heater: 5 kW
- Equivalent evaporation: Approx. 7.5 kg/h steam
- Maximum working pressure: 9 kg/cm2 (0.88 MPa)
- Power consumption: Power meter with digital display
- Accessories: Safety valve
 : Level gauge and low-level alarm
 : Temperature control unit to limit temperature to not more than 180°C
- Power supply: 380 V, 3 Ph, 50Hz. Other power supply is available on request.
  • TH120-011
Throttling calorimeter
  • TH120-014
Condenser cooling unit
 The unit is to cool condenser cooling water and make this equipment to be self-contained instead of using outside water supply. It is completed with transfer pump and fan.
- Type: Fins and tubes
- Capacity: 2 RT
  • TH130-020
Electric Super heater
- Capacity: 0.9 kW
- Steam turbine type: Twin nozzle for superheated steam
- Accessories: Safety valve
 : Temperature for superheat steam outlet
 : Temperature control unit to limit temperature to not more than 210°C
 : Power meter with digital display
  • TH130-025
Vacuum pump at condenser for observation the effect of turbine negative exhaust pressure.
  • TH130-050

Computer Interface (computer not included)

 This includes TH130S 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)


TH130SLearning Software
 to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.