Mott MacDonald Ireland’s expertise in power generation has
enabled us to apply our expertise to engineering small and large
scale CHP plant to the process industry. These industries can cover
refineries, chemical plant, food and drink, paper and board, iron
and steel, etc. These applications use huge quantities of heat
usually in the form of steam in conjunction with a high matching
requirement for electricity.
Slough Estates CHP Power Station, United
Kingdom
The key factor in the correct selection of CHP plant is the heat to
power ratio. This determines the type of prime mover required which
could consist of:
- Boiler / steam turbine / passout or back pressure steam
- Incinerator / steam turbine / passout or back pressure
steam
- Gas turbine with waste heat boiler (WHB)
- Gas turbine in combined cycle with passout or back pressure
steam
- Reciprocating engine with WHB or ORC
Organic Rankine Cycle (ORC)
For small to medium scale power projects, we are increasingly
investigating the feasibility of utilising an Organic Rankine Cycle
to maximise the generating efficiency of the plant. For example, in
diesel engine applications this technology can use both the higher
grade heat in the exhaust gases and as well as the lower grade heat
in the engine cooling system(s) to generate additional electrical
power. Instead of steam, which is used in more conventional
combined cycle plant, the ORC uses of working fluid such as the
refrigerant R245fa.
Our project portfolio includes:
St. James’s Gate Brewery, Dublin,
Ireland
Pfizer Chemical Corporation,
County Cork, Ireland
Whitegate Oil Refinery, County
Cork, Ireland
