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LPG Microturbines
Power generation with LPG is continously gaining ground due to the numerous advantages of the product.
Power generation with LPG Microturbines is a relatively new application in the market, although the technology is not new. These are relatively small machines. Technologically, they are generaly capable of using multiple fuels, including common commercially available types of LPG, to drive a small turbine that powers an electric generator. They can be assembled into multipack units in a modular form, for projects from 5MW to 10MW. Such modern units are packaged with integrated digital protection, synchronization, and controls. They produce high combined heat and power efficiencies and can address various energy needs including primary power, peak shaving, back-up power, as well as thermal or cooling needs. Due to their modular concept, the various units can be switched on and off in adequate number, to meet the power demand.
LPG Microturbines can be used in distributed power generation applications including cogeneration, resource recovery, secure power, and hybrid electric vehicles (HEV).
Features
Microturbines are a simple form of gas turbine, usually featuring a radial compressor with turbine rotors, and often using just one stage of each. They typically recover exhaust energy to preheat compressed inlet air, thereby increasing electrical efficiency compared with a simple-cycle machine. The air-to-air heat exchanger is termed a "recuperator", and the entire system is typically called a recuperated cycle.
LPG/Propane fueled microturbines, have additional requirements beyond those for the operation of a standard propane appliance, such as:
- Microturbines require relatively high vapor pressure (55-80 psig)
- Liquid LPG/Propane cannot enter the microturbine system. The fuel must be in vapor form and therefore equipment options such as natural tank vaporization, liquid pump and gas vaporizers, or tank heaters are employed.
- Microturbine systems are smaller than typical LPG/Propane systems, requiring specialized equipment
- Many sites which use microturbines will be found in off-grid areas, and therefore the LPG/Propane microturbine is able to stand alone.
Benefits
- Clean burning and ultra-low emissions, therefore allowing the system to operate in strictly regulated areas
- Microturbines provide a secure power source to meet tough utility interconnection requirements, in areas where grid connection is limited
- Integrated sound attenuation, quiet operation with almost no vibrations, compared to diesel types
- Using LPG as fuel allows the microturbine to be energy dense. The fuel supply therefore occupies a small footprint for onsite storage
- Modularity of microturbine units allows flexibility of use. Units may be connected in parallel to serve larger loads and to provide power reliability
- An LPG fuel microturbine system can be designed to startup without any external power source
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