Classrooms
Discover the energy-saving potential of classrooms with Rayzeek’s occupancy sensor design guide. Learn how to meet energy code requirements while creating a more efficient learning environment.
Transforming Classrooms into Energy-Efficient Learning Spaces
Classrooms are dynamic spaces that serve as the foundation for learning and development. They are often filled with a variety of lighting fixtures, from overhead lights to task lighting, all of which contribute to a significant amount of energy consumption. The lighting in these spaces is typically left on for extended periods, even when the room is unoccupied, leading to unnecessary energy waste.
In a typical classroom, the lighting needs can vary greatly depending on the time of day, the activities taking place, and the number of occupants. This variability makes it challenging to manage lighting effectively and efficiently. As a result, there is a pressing need for solutions that can automatically control lighting based on occupancy, thereby reducing unnecessary energy consumption.
The need for energy conservation in classrooms is clear, and one of the most effective solutions is the use of occupancy sensors. These devices can automatically turn off lights when a room is vacant, significantly reducing energy consumption. With Rayzeek’s range of occupancy sensors, classrooms can become more energy-efficient, meeting the requirements of energy codes while also reducing operational costs.
Uppfyll energireglerna
International Energy Conservation Code (IECC) är en modellkod framtagen av International Code Council (ICC) för att fastställa minimikrav för utformning och konstruktion avseende energieffektivitet i byggnader. IECC uppdateras vart tredje år för att inkludera de senaste metoderna och teknikerna inom energibesparing.
IECC – Varför du bör bry dig
IECC har antagits i stor utsträckning av delstater och kommuner över hela USA. IECC omfattar olika aspekter av energianvändning, inklusive byggnadsskalet (väggar, tak och fönster), värme- och kylsystem samt belysningssystem.
IECC föreskriver specifik belysningsstyrning, såsom närvarosensorer, för att minimera energislöseri i outnyttjade utrymmen i olika områden.
ANSI/ASHRAE/IES Standard 90.1, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings, är en allmänt erkänd energistandard som publiceras av American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).
ASHRAE 90.1 – Varför du bör bry dig
ASHRAE 90.1 används som riktmärke för energikoder för byggnader i hela USA och fungerar som en efterlevnadsväg inom IECC, vilken anger minimikrav för energieffektiva prestanda hos komponenter i kommersiella byggnader, inklusive byggnadsskal, VVS-system, varmvattensystem och belysningssystem.
Standarden ASHRAE 90.1 anger maximalt tillåtna belysningseffekttätheter och minimikrav på belysningsstyrning, inklusive användning av närvarosensorer inom specifika områden.
Title 24, del 6 i California Building Standards Code, officiellt känd som Building Energy Efficiency Standards for Residential and Nonresidential Buildings, administreras av California Energy Commission och uppdateras regelbundet för att återspegla ny teknik och nya metoder för energieffektivitet.
Title 24 – Varför du bör bry dig
Title 24 är känd för sina stränga krav, vilka ofta anses vara striktare än de som finns i många andra energikoder i USA. Title 24 föreskriver strikta energiprestandastandarder för alla aspekter av byggnadskonstruktion, vilket inkluderar uppvärmning, ventilation, luftkonditionering (VVS), varmvatten och belysning.
Title 24 kräver installation av närvarosensorer som anpassar belysningen baserat på rumsutnyttjande i specifika utrymmen i kommersiella byggnader för att säkerställa att energi inte slösas bort.
Införande av energikoder per delstat
Expandera för att se den utförliga tabellen ↓
| Delstat | Gällande kommersiella föreskrifter | Effektivitetskategori för kommersiella föreskrifter |
|---|---|---|
| Alabama | 90.1-2013 | 90.1-2013 |
| Alaska | Inga delstatsövergripande | Inga delstatsövergripande föreskrifter |
| Arizona | Lokal självstyre | <90.1-2007 |
| Arkansas | 2009 IECC och 90.1-2007 | 90.1-2007 |
| Kalifornien | 2022 Building Energy Efficiency Standards | 90.1-2019 |
| Colorado | Lokal självstyre | Inga delstatsövergripande föreskrifter |
| Connecticut | 2021 IECC och 90.1-2019 | 90.1-2019 |
| Delaware | 2018 IECC och 90.1-2016 | 90.1-2013 |
| District of Columbia | 90.1-2013^ | 90.1-2019 |
| Florida | 2021 IECC and 90.1-2019^ | 90.1-2016 |
| Georgia | 2015 IECC and 90.1-2013^ | 90.1-2013 |
| Hawaii | Lokal självstyre | 90.1-2013 |
| Idaho | 2018 IECC och 90.1-2016 | 90.1-2013 |
| Illinois | 2021 IECC och 90.1-2019 | 90.1-2019 |
| Indiana | 90.1-2007 | 90.1-2007 |
| Iowa | 2012 IECC and 90.1-2010 | 90.1-2007 |
| Kansas | Lokal självstyre | Inga delstatsövergripande föreskrifter |
| Kentucky | 2012 IECC and 90.1-2010 | 90.1-2007 |
| Louisiana | 2021 IECC and 90.1-2019^ | 90.1-2016 |
| Maine | 2015 IECC och 90.1-2013 | 90.1-2013 |
| Maryland | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Massachusetts | 2018 IECC och 90.1-2016^ | 90.1-2019 |
| Michigan | 2015 IECC and 90.1-2013^ | 90.1-2013 |
| Minnesota | 90.1-2019^ | 90.1-2019 |
| Mississippi | Inga delstatsövergripande | Inga delstatsövergripande föreskrifter |
| Missouri | Lokal självstyre | Inga delstatsövergripande föreskrifter |
| Montana | 2021 IECC och 90.1-2019 | 90.1-2019 |
| Nebraska | 2018 IECC och 90.1-2016 | 90.1-2013 |
| Nevada | 2018 IECC och 90.1-2016 | 90.1-2013 |
| New Hampshire | 2018 IECC och 90.1-2016^ | 90.1-2013 |
| New Jersey | 90.1-2019 | 90.1-2019 |
| New Mexico | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| New York | 2018 IECC och 90.1-2016^ | 90.1-2016 |
| North Carolina | 2015 IECC and 90.1-2013^ | 90.1-2010 |
| North Dakota | Lokal självstyre | Inga delstatsövergripande föreskrifter |
| Ohio | 2021 IECC and 90.1-2019^ | 90.1-2016 |
| Oklahoma | 2006 IECC och 90.1-2004 | <90.1-2007 |
| Oregon | 90.1-2019 | 90.1-2019 |
| Pennsylvania | 2018 IECC och 90.1-2016 | 90.1-2013 |
| Rhode Island | 2018 IECC och 90.1-2016^ | 90.1-2013 |
| South Carolina | 2009 IECC och 90.1-2007 | 90.1-2007 |
| South Dakota | Lokal självstyre | Inga delstatsövergripande föreskrifter |
| Tennessee | 2021 IECC and 90.1-2013 | 90.1-2007 |
| Texas | 2015 IECC och 90.1-2013 | 90.1-2013 |
| Utah | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Vermont | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Virginia | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Washington | 2018 Washington State Energy Code | 90.1-2019 |
| Tennessee | 2012 IECC and 90.1-2010 | 90.1-2007 |
| Texas | 2015 IECC och 90.1-2013 | 90.1-2013 |
| Utah | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Vermont | 2018 IECC och 90.1-2016^ | 90.1-2019 |
| Virginia | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Washington | 2018 Washington State Energy Code | 90.1-2019 |
| West Virginia | 90.1-2013 | 90.1-2013 |
| Wisconsin | 2015 IECC and 90.1-2013^ | 90.1-2010 |
| Wyoming | Lokal självstyre | Inga delstatsövergripande föreskrifter |
- ^ When an amendment impacting energy efficiency can be quantified using DOE Prototype Building Models, they were captured in the analysis.
- For states adopting both IECC and 90.1, the IECC code is usually analyzed as the state current code in this study except for states with extensive amendments to the IECC.
Design Guide Key Concepts for Classrooms
Designing an energy-efficient lighting control solution for classrooms involves strategic placement of occupancy sensors to ensure comprehensive coverage of the space.
Designing an energy-efficient classroom with occupancy sensors involves careful planning and strategic placement of sensors:
- Wall Occupancy/Vacancy Sensors: Install these sensors near the main entrance of the classroom. These sensors can detect when someone enters or leaves the room, and can automatically turn the lights on or off accordingly. They can also be manually controlled to turn all lights on or off.
- Ceiling Occupancy Sensors: These sensors should be installed in the center of the classroom, ensuring they have a clear view of the entire room to cover key areas such as the teacher’s desk, student desks, and any separate learning areas. They can detect any movement in the room, including minor movements such as students writing at their desks. When no movement is detected for a set period, the lights will automatically turn off.
- Additional Sensors for Specific Areas: If the classroom has specific areas such as a reading corner or a lab area, additional sensors may be needed. These sensors can control the lighting in these specific areas based on occupancy, ensuring that lights are not left on unnecessarily.
- Sensor Placement Considerations: Avoid placing sensors near air vents or other sources of movement that could trigger the sensor falsely. Also, ensure the sensors’ view is not obstructed by tall furniture or fixtures.
- Consideration of Natural Light: If the classroom has windows, the sensors should be programmed to consider the natural light coming into the room. This can help to further reduce energy consumption by utilizing natural light whenever possible.
- Integration with Manual Control: All occupancy/vacancy sensors should be integrated with manual controls. This allows teachers to manually turn off the lights during activities like video presentations, even if the room is occupied.
Featured Products & Solutions
Wall Sensor Switches
RZ020/021 Motion Sensor Switches
- 2-wire, 3-wire, 4-wires wiring options
- Occupancy, Vacancy, Manual ON/OFF
- Adjustive time delay and ambient light control
Multi-Location Wireless Wall Sensors
RZ020A/021A + RZ022W Kits
- Hardwired RZ021A/022A occupancy sensor switch
- Wireless companion switch (RZ022W) for multi-location control
Ceiling Occupancy Sensors
RZ036
- Hardwired occupancy sensors
- Auto ON, auto OFF
- Line voltage and Low voltage available
Core features included:
- Integrated manual ON/OFF control for all lighting
- Vacancy sensors (Manual ON only): Lights must be turned on manually only
- Adjustable time-delay, lighting is automatically turned full OFF after 15mins
- Additional: multi-location wireless kits to expand the control range without re-wring
- Additional: multiple wiring options available for both new constructions and retrofit projects.
Meets the Mandatory Provisions
IECC – 2011
C405.2.1 Occupant sensor controls
Occupant sensor controls shall be installed to control lights in the space.
C405.2.1.1 Occupant sensor control functions
- Manual on or partial on to no more than 50% power.
- Full off within 20 minutes after all occupants have left the space
- A manual control to turn off the lights.
ASHRAE 90.1 – 2022
9.4.1.1 a Local control
There shall be one or more manual lighting control device that provides ON and OFF control
of all lighting in the space.
9.4.1.1 b Restricted to manual ON
None of the lighting shall be automatically turned on
9.4.1.1 c Restricted to partial automatic ON
No more than 50% of the lighting power for the general lighting shall be allowed to be automatically turned on
** NOTE: At least one 9.4.1.1 b or 9.4.1.1 c shall be implemented.
For classrooms except shop classrooms (all other classrooms/lecture halls/training rooms):
9.4.1.1 h Automatic full OFF control
All lighting in the space shall be automatically shut off within 20 minutes of all occupants leaving the space
Title 24 – 2022
130.1 (a) Manual area controls.
Each area enclosed by ceiling-height partitions shall provide lighting controls that allow the lighting in that area to be manually turned on and off.
130.1 (c) Shut-OFF Controls.
Lighting shall be controlled with occupant sensing controls to automatically shut OFF all of the lighting in 20 minutes or less after the control zone is unoccupied that shall function either as:
- A. Occupant sensing controls (if 130.1(b) not required to have multi-level lighting controls); or
- B. Partial-ON occupant sensing controls, or
- C. Vacancy sensing controls, where all lighting responds to a manual ON input only
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