ReGenTech - Technologies

Tel +44 (0)1224 715568 | Fax +44 (0)870 706 1704 | eMail sales@regentech.co.uk

Registered in Scotland Company Number SC211438

Office view August 2008

Solar

Fuel Cells

Bio-gas Hydrogen

Hydro

Wind

Tel +44 (0)1224 715568| Fax +44 (0)870 706 1704 Email sales@regentech.co.uk

Registered in Scotland Company Number SC211438

Offce view August 2008

Fuel Cells

Much is written about fuel cells, some of which is very complex. However the main characteristics include:

· A fuel cell is a GENERATOR generating electricity and heat from a fuel source.

· Fuel sources include, natural gas, LPG, kerosene, bio-gas, methanol, formic acid and hydrogen

· Power is generated by a chemical reaction, not combustion, making it inherently more efficient.

· Other than mechanical gas and liquid pumps the systems are silent.

· The fuel source defines the system emissions.

· Carbon based fuel emits CO2 (significantly reduced) and water vapour.

· Hydrogen fuel emits only water vapour

· In all forms there are no particulates, aromatics or Nitrous Oxides.

· Power ratings from mW to MW

· Applications include very portable battery and every single combustion energy system

The case for their use is technically compelling, only cost remains the barrier. However prices for these systems are dropping, this trend will accelerate as the early products come available.

Types of fuel cells

AFC Alkaline Fuel Cell

The oldest technology and the main systems in the NASA space programme, less common today

Capacity 50W to 50kW

Description

Products

PEM Polymer Exchange membrane

Now the main stream technology for hydrogen fuel

Capacity 1W to 200kW

Description

Products

MFC Methanol Fuel Cell

The most readily and commercially available product for portable applications. Avaliable in two forms, DMFC or Reformer. A DMFC directly uses the methanol, whilst a reformer produces hydrogen from methanol for a PEM fuel cell.

Capacity 1W to 5kW

Description

Products

MCFC Molten carbonate Fuel Cell

Commercially available large stationary CHP generator system using natural gas or biogas

Capacity 250W to 500kW

Description

Products

PAFC Phosphoric Acid Fuel Cell

The most successful and longest serving stationary system. Fuel source is hydrogen produced at source from natural gas or biogas

Capacity 200W to 400kW

Description

Products

SOFC Solid Oxide Fuel Cell

Capacity 50W to 50kW

Description

Products