The advantages of a modern low carbon steam plant over the traditional approach

1. Creating the Low Carbon Steam Plant

2. 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

3. Types of Boilerplant
• Central Steam
• Central MTHW
• Central Biofuel Steam
• Central Biofuel MTHW
• Decentralised LTHW

4. Two main services
• Steam
• MTHW

5. Choice of System: Ability to provide service
Steam Systems MTHW Systems
 Heating  Heating
 DHW  DHW
 Chilling  Chilling
 Cooking  Cooking
 Humidification  Humidification
 Laundry services  Laundry services
 Sterilisation  Sterilisation
 Power generation  Power generation

6. Steam Plantrooms

7. Traditional Steam Plantroom
Vents from safety valves
LTHW Water circuits
Flash loss
from vent
DHW Heat Exchanger
Condensate pump Potential for Legionella
problems

8. 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

9. Traditional Steam Plantroom

10. The Modern Low Carbon Plantroom
Boiler pressure steam No PRV or condensate pump required
DHW
LTHW
LTHW
DHW Variable speed drive
pump skid
100% sub-cooled condensate return

11. 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

12. Modern Low Carbon Easiheat Plantroom

13. Alternative Option to Finance

14. 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

15. 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

16. For more information on creating a low
carbon steam plant please email
uk.enquiries@uk.spiraxsarco.com
or visit
www.spiraxsarco.com/uk