Steam Turbines

Quick Facts

Output Range
500kWe - 5000kWe

Applications
Large scale electrical production plants

Avg Price Per kWe
$1000

Maintenance
Highest O&M cost of all electrical generation devices

Ease of Installation
Modular design enables pre-piping/wiring prior to delivery on site

Advantages

  • Best technology for 1 MWe and above
  • Well proven/continuous electrical production
  • Commodity technology

Disadvantages

  • Requires high pressure dry steam
  • Increased operation code requirements
  • Requires boiler feedwater treatment
  • Water losses due to evaporation
  • Open-loop system
  • Laborious start/stop procedures

turbine

 

Microsteam Turbines

Quick Facts

Output Range
275kWe/unit

Applications
Install in existing steam facility, can replace pressure reduction valves

Avg Price Per kWe
$2000

Maintenance
Less intrusive than large scale turbine

Ease of Installation
Modular design enables pre-piping/wiring prior to delivery on site

Small footprint accomodates retrofit projects

Advantages

  • Easy start/stop procedures
  • Offers steam exit pressures suitable for industrial application
  • Minimal space requirements
  • Scalable for additional electrical generation

Disadvantages

  • Increased operation code requirements
  • Requires boiler feedwater treatment
  • Open loop system

microsteam

 

Organic Rankine Cycle (ORC)

Quick Facts

Output Range
10 kWe - 1000 kWe

Applications
Small scale electric generation
Containerized as remote power generating system
Schools, office buildings, small businesses

Avg Price Per kWe
$2200

Maintenance
Lowest of all electrical generation
Hermetically sealed components
Can be maintained by traditional mechanic

Ease of Installation
Modular design enables pre-piping/wiring prior to delivery on site

Small footprint accomodates retrofit projects

Advantages

  • Easy start/stop procedures
  • Closed loop heating and cooling circuits
  • Does not require steam production
  • Environmentally friendly fluids
  • Reduced operation code requirements
  • Scalable for additional electrical generation

Disadvantages

  • Comparatively small scale electrical generation
  • Must provide cooling source

cycle

 

Toroidal Intersecting Vane Mechanism (TIVM)

Quick Facts

Output Range
50kWe/unit

Applications
Existing facilities
Replace pressure reduction valves
Small scale electric generation facilities
Hospitals, small industrial

Avg Price Per kWe
$2600

Maintenance
Less intensive than MST
Min boiler feedwater treatment

Ease of Installation
Modular design enables pre-piping/wiring prior to delivery on site

Small footprint accomodates retrofit projects

Advantages

  • Easy start/stop procedures
  • Low pressure wet steam
  • Minimal space requirements
  • Scalable for additional electrical generation

Disadvantages

  • Requires steam production
  • Increased operation code requirements
  • Requires boiler feedwater treatment
  • Open loop system

TIVM

 

Piston Engine

Quick Facts

Output Range
100kWe - 1200kWe/engine generator set

Applications
Extreme remote power applications
Existing steam facilities
Can replace pressure red. valves
Small scale electric generation facilities
Hospitals, large industrial facilities, feed/wood mills

Avg Price Per kWe
$1400

Maintenance
Low compared to steam turbine
Can be maintained by traditional mechanic
Similar to diesel engine

Ease of Installation
Modular design enables pre-piping/wiring prior to delivery on site

Skid mounted

Advantages

  • Modulating turn up/down capable
  • Easy start/stop procedures
  • Offers steam exit pressures suitable for industrial application
  • Range from 100kWe - 1200kWe with
    one engine generator set

Disadvantages

  • Minimum pressure ratio Pi/Po > 3
  • Requires steam production
  • Increased operation code requirements
  • Requires boiler feedwater treatment
  • Open loop system

piston-engine