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Creating the Low Carbon Steam Plant
The main issues
• Meet Carbon Reduction Targets
• Reducing energy costs
• Life Cycle costs
• Providing innovation in design and operation
• Save space in plantroom
• Provide value for money
Types of Boilerplant
• Central Steam
• Central MTHW
• Central Biofuel Steam
• Central Biofuel MTHW
• Decentralised LTHW
Two main services
• Steam
• MTHW
Choice of System: Ability to provide service
Steam Systems Heating
DHW
Chilling
Cooking
Humidification
Laundry services
Sterilisation
Power generation
MTHW Systems Heating
DHW
Chilling
Cooking
Humidification
Laundry services
Sterilisation
Power generation
Steam Plantrooms
Traditional Steam Plantroom
Vents from safety valves
Flash loss from vent
Condensate pump
Water circuits
DHW Heat Exchanger
Potential for Legionellaproblems
LTHW
Issues with traditional steam plantroom design
• Flash steam losses
• Waterhammer in calorifiers
• Duty / standby PRV sets
• Cost of separate condensate pump and vent
• Problems with Legionella with storage cylinder
• Maintenance issues with shell and tube units
• Usually supplied as loose parts making costing and
installation expensive
Traditional Steam Plantroom
The Modern Low Carbon Plantroom
Boiler pressure steam
100% sub-cooled condensate return
Variable speed drive pump skid
LTHW
LTHW
DHW
DHW
No PRV or condensate pump required
Modern Steam Plantroom
• Can be connected directly to high pressure steam main
• 100% sub-cooled condensate returned to boiler
• Greatly reduced steam consumption
• No vents required
• No condensate pump required
• No storage cylinders required
• Legionella problems eliminated
• Quick installation
• Variable speed pumps supplied on skid
• No withdrawal distance on exchangers
• Much smaller plantroom required
• Space can be used for patient areas
Modern Low Carbon Easiheat Plantroom
Alternative Option to Finance
Spirax Rental
No Capital investment required – upgrades/retrofits may be
financed via ‘Spirax Rental’
Use energy savings to finance monthly payments
Net savings contribution may be realised from day one
Preserve existing Capital budget
Upgrade/Retrofit can reduce maintenance costs & improve
site efficiency & lifecycle costs
Spirax branded Rental Contract
Conclusions
All systems designed to help Hospitals meet stringent CO2
Reductions
Systems will deliver large energy reductions
All systems are packaged for ease of installation
All systems are well planned and project managed
Various finance options available
In most cases plantroom space can be given back to patient
care
Hospitals can now have the most energy efficient plant
available
For more information on creating a low
carbon steam plant please email
or visit
www.spiraxsarco.com/uk
