|
System Name |
|
|---|---|
|
Applicability |
All cogeneration systems |
|
Definition |
A unique identifier that makes a link to the construction documents |
|
Units |
Text, unique |
|
Input Restrictions |
None |
|
Baseline Rules |
Not applicable |
|
Rated Output |
|
|---|---|
|
Applicability |
All cogeneration systems |
|
Definition |
The rated electric power that the cogenerator can produce |
|
Units |
Kilowatts (kW) |
|
Input Restrictions |
None |
|
Baseline Rules |
Not applicable |
|
Rated Efficiency |
|
|---|---|
|
Applicability |
All cogeneration systems |
|
Definition |
The efficiency of converting a fuel to electricity |
|
Units |
Unitless |
|
Input Restrictions |
None |
|
Baseline Rules |
Not applicable |
|
Heat Production Rate |
|
|---|---|
|
Applicability |
All cogeneration systems |
|
Definition |
The rate of heat production at the rated output |
|
Units |
Btu/h |
|
Input Restrictions |
None |
|
Baseline Rules |
Not applicable |
|
Heat Temperature |
|
|---|---|
|
Applicability |
All cogeneration systems |
|
Definition |
The temperature of the water produced |
|
Units |
Degrees Fahrenheit (°F) |
|
Input Restrictions |
None |
|
Baseline Rules |
Not applicable |
|
Modulation |
|
|---|---|
|
Applicability |
All cogeneration systems |
|
Definition |
The capability of the cogeneration system to modulate output with corresponding modulation of input energy and waste heat |
|
Units |
Data structure |
|
Input Restrictions |
None |
|
Baseline Rules |
Not applicable |
|
Schedule |
|
|---|---|
|
Applicability |
All cogeneration systems |
|
Definition |
A schedule that indicates when the cogeneration system will operate and perhaps at what capacity (if there is a means for modulation) |
|
Units |
Data structure: schedule, on/off or fractional |
|
Input Restrictions |
None |
|
Baseline Rules |
Not applicable |
Candidate buildings may have combined heat and power (CHP) cogeneration systems and the energy generated by these systems may offset the power used by HVAC, lighting, and other building systems. Since most CHP systems work under a metering arrangement whereby the building electrical or thermal loads act as a control of the system, the simulation of CHP systems needs to be on the same timestep as the whole building energy simulation so that it can be aligned with the building loads and the utility rate structure.
This section describes one set of building descriptors for specifying a CHP system. This set of building descriptors is based on the DOE 2.2 electric generator with heat recovery scheme. Other models may be used for CHP systems. The heat recovery inputs apply only to the proposed design, as the baseline building is modeled as an electrical generator only without recovered heat.
| System Name | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | A unique identifier that makes a link to the construction documents |
| Units | Text, unique |
| Input Restrictions | None |
| Rated Output | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The rated electric power that the cogenerator can produce |
| Units | Kilowatts (kW) |
| Input Restrictions | None |
| Rated Efficiency | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The efficiency of converting a fuel to electricity |
| Units | Unitless |
| Input Restrictions | None |
| Heat Production Rate | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The rate of heat production at the rated output |
| Units | Btu/h |
| Input Restrictions | None |
| Heat Temperature | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The temperature of the water produced |
| Units | Degrees Fahrenheit (°F) |
| Input Restrictions | None |
| Modulation | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The capability of the cogeneration system to modulate output with corresponding modulation of input energy and waste heat |
| Units | Data structure |
| Input Restrictions | None |
| Schedule | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | A schedule that indicates when the cogeneration system will operate and perhaps at what capacity (if there is a means for modulation) |
| Units | Data structure: schedule, on/off or fractional |
| Input Restrictions | None |
| System Name | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | A unique identifier that makes a link to the construction documents |
| Units | Text, unique |
| Input Restrictions | None |
| Rated Output | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The rated electric power that the cogenerator can produce |
| Units | Kilowatts (kW) |
| Input Restrictions | None |
| Rated Efficiency | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The efficiency of converting a fuel to electricity |
| Units | Unitless |
| Input Restrictions | None |
| Heat Production Rate | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The rate of heat production at the rated output |
| Units | Btu/h |
| Input Restrictions | None |
| Heat Temperature | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The temperature of the water produced |
| Units | Degrees Fahrenheit (°F) |
| Input Restrictions | None |
| Modulation | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | The capability of the cogeneration system to modulate output with corresponding modulation of input energy and waste heat |
| Units | Data structure |
| Input Restrictions | None |
| Schedule | |
| Applicability | All cogeneration systems |
|---|---|
| Definition | A schedule that indicates when the cogeneration system will operate and perhaps at what capacity (if there is a means for modulation) |
| Units | Data structure: schedule, on/off or fractional |
| Input Restrictions | None |