2.2.23 Install small modular boilers
Description
Modular boilers are designed as an alternative to large single boilers and offer a very efficient approach to tertiary heating. Each module can be a separate boiler installed alongside another in a horizontal arrangement, or as a vertical stack of boiler modules one above another.
Benefits
It is more efficient to operate smaller boilers when the heating load is 25% to 50% of the design capacity than it is to use one large boiler to meet a partial load
Easier to install
Increase system security
Load matching and control
Cost reduction and energy savings
Limitations
Managers should employ controls to stage the boilers on as required to match the load
Economic assessment
The drawback to install multiple high-efficient boilers is the large initial capital cost. Often a high-efficient boiler is two to three times the cost of a similar capacity mid-efficient boiler. In many cases using a combination of high efficient and mid-efficient boilers in a boiler plant can achieve the same efficiency performance as a system with all high-efficient boilers.
References and best practices
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CHARACTERIZATION
Environment or playable world:
Residential
Academic
Offices
All
Carried out by:
Public building users
Owners
Operators
All
Reduce consumption of:
Heating
Cooling
DHW
Lighting
Electric devices
Type of driver:
Physical environmental
Contextual
Psychological
Physiological
Social
Time framework:
- Short term
- Long term
Type of measure:
- Envelope
- HVAC
- DHW
- Lighting
- Electrical devices
- Other
