Open Offices
자동 조명 제어를 통해 효율성을 높이고 에너지 낭비를 줄이는 방법을 알아보세요. 작업 공간의 효율성과 편안함을 위해 조명 제어를 최적화하는 방안을 확인할 수 있습니다.
Revolutionize Your Open Office Lighting with Smart Occupancy Sensors
Open offices, characterized by their large areas and cubicle partitions, are a common sight in many modern workplaces. These spaces are typically bustling with activity, filled with employees working, collaborating, and moving around. The expansive area requires ample illumination, often provided by high-intensity light fixtures. These lights, left on throughout the workday, consume a substantial amount of energy. Moreover, even when the office is vacant, during off-hours or lunch breaks, the lights often remain on, leading to unnecessary energy consumption.
The high energy consumption of lighting in open offices is a concern for both environmental and economic reasons. With the increasing emphasis on energy efficiency and sustainability, businesses are seeking ways to reduce their energy footprint. Moreover, energy costs can account for a significant portion of a company’s operating expenses, making energy-saving measures a smart financial decision as well.
To address this, the integration of occupancy sensors in open offices presents a compelling solution. Occupancy sensors can automatically control lighting based on the presence of individuals in the space, significantly reducing unnecessary energy consumption. When the office is vacant, the sensors can automatically switch off or dim the lights, thereby conserving energy. With our sensors seamlessly integrated into your open office layout, you can transform your open office into an energy-efficient workspace that meets the stringent requirements of US Energy Codes.
에너지 코드 준수
국제에너지보존코드(IECC)는 건물 에너지 효율성을 위한 최소 설계 및 시공 요구사항을 규정하기 위해 ICC(International Code Council)에서 개발한 모델 코드입니다. IECC는 최신 에너지 절약 실천법과 기술을 반영하기 위해 3년마다 개정됩니다.
IECC를 주목해야 하는 이유
IECC는 미국 전역의 주 및 지방 자치 단체에서 널리 채택되고 있습니다. IECC는 건물 외피(벽, 지붕, 창호), 난방 및 냉방 시스템, 조명 시스템을 포함한 에너지 사용의 다양한 측면을 다룹니다.
IECC는 다양한 구역의 빈 공간에서 발생하는 에너지 낭비를 최소화하기 위해 점유 감지 센서와 같은 특정 조명 제어 장치의 설치를 의무화합니다.
ANSI/ASHRAE/IES Standard 90.1(저층 주거용 건물을 제외한 부지 및 건물의 에너지 표준)은 미국냉난방공조학회(ASHRAE)에서 발행하는 광범위하게 인정받는 에너지 표준입니다.
ASHRAE 90.1을 주목해야 하는 이유
ASHRAE 90.1은 미국 전역의 건물 에너지 코드의 기준 표준으로 사용되며, 건물 외피, HVAC 시스템, 급탕 시스템, 조명 시스템을 포함한 상업용 건물 구성 요소의 에너지 효율적 성능에 대한 최소 요구사항을 개괄하는 IECC 내 준수 경로 역할을 합니다.
ASHRAE 90.1 표준은 최대 허용 조명 전력 밀도 및 특정 구역에서의 점유 감지 센서 사용을 포함한 최소 조명 제어 요구사항을 규정합니다.
캘리포니아 건물 표준법 Part 6의 Title 24(공식 명칭: 주거용 및 비주거용 건물 에너지 효율성 표준)는 캘리포니아 에너지 위원회(CEC)에서 관리하며, 새로운 에너지 효율 기술과 방법을 반영하기 위해 주기적으로 업데이트됩니다.
Title 24를 주목해야 하는 이유
Title 24는 미국 내 다른 수많은 에너지 코드보다 더욱 엄격한 요구사항을 가진 것으로 잘 알려져 있습니다. Title 24는 난방, 환기, 공조(HVAC), 급탕, 조명을 포함한 건물 건설의 모든 측면에 대해 엄격한 에너지 성능 표준을 준수하도록 규정합니다.
Title 24는 에너지가 낭비되지 않도록 상업용 건물의 특정 구역에서 재실 여부에 따라 조명을 조절하는 점유 감지 센서 설치를 의무화합니다.
주별 에너지 코드 채택 현황
상세 표를 보려면 펼치기 ↓
| 주(State) | Current Commercial Code | Commercial Code Efficiency Category |
|---|---|---|
| Alabama | 90.1-2013 | 90.1-2013 |
| Alaska | None statewide | No statewide code |
| Arizona | Home rule | <90.1-2007 |
| Arkansas | 2009 IECC and 90.1-2007 | 90.1-2007 |
| California | 2022 Building Energy Efficiency Standards | 90.1-2019 |
| Colorado | Home rule | No statewide code |
| Connecticut | 2021 IECC and 90.1-2019 | 90.1-2019 |
| Delaware | 2018 IECC and 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 | Home rule | 90.1-2013 |
| Idaho | 2018 IECC and 90.1-2016 | 90.1-2013 |
| Illinois | 2021 IECC and 90.1-2019 | 90.1-2019 |
| Indiana | 90.1-2007 | 90.1-2007 |
| Iowa | 2012 IECC and 90.1-2010 | 90.1-2007 |
| Kansas | Home rule | No statewide code |
| Kentucky | 2012 IECC and 90.1-2010 | 90.1-2007 |
| Louisiana | 2021 IECC and 90.1-2019^ | 90.1-2016 |
| Maine | 2015 IECC and 90.1-2013 | 90.1-2013 |
| Maryland | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Massachusetts | 2018 IECC and 90.1-2016^ | 90.1-2019 |
| Michigan | 2015 IECC and 90.1-2013^ | 90.1-2013 |
| Minnesota | 90.1-2019^ | 90.1-2019 |
| Mississippi | None statewide | No statewide code |
| Missouri | Home rule | No statewide code |
| Montana | 2021 IECC and 90.1-2019 | 90.1-2019 |
| Nebraska | 2018 IECC and 90.1-2016 | 90.1-2013 |
| Nevada | 2018 IECC and 90.1-2016 | 90.1-2013 |
| New Hampshire | 2018 IECC and 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 and 90.1-2016^ | 90.1-2016 |
| North Carolina | 2015 IECC and 90.1-2013^ | 90.1-2010 |
| North Dakota | Home rule | No statewide code |
| Ohio | 2021 IECC and 90.1-2019^ | 90.1-2016 |
| Oklahoma | 2006 IECC and 90.1-2004 | <90.1-2007 |
| Oregon | 90.1-2019 | 90.1-2019 |
| Pennsylvania | 2018 IECC and 90.1-2016 | 90.1-2013 |
| Rhode Island | 2018 IECC and 90.1-2016^ | 90.1-2013 |
| South Carolina | 2009 IECC and 90.1-2007 | 90.1-2007 |
| South Dakota | Home rule | No statewide code |
| Tennessee | 2021 IECC and 90.1-2013 | 90.1-2007 |
| Texas | 2015 IECC and 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 and 90.1-2013 | 90.1-2013 |
| Utah | 2021 IECC and 90.1-2019^ | 90.1-2019 |
| Vermont | 2018 IECC and 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 | Home rule | No statewide code |
- ^ 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 Open Offices
Designing an energy-efficient lighting control solution for open offices involves strategic placement of occupancy sensors to ensure comprehensive coverage of the space.
In an open office setting, the primary areas to consider for sensor placement are the main walkways and areas with high foot traffic. These areas are crucial for sensor placement as they are the main areas of human traffic:
- Cover Main Walkways: The main walkways in an open office are the areas with the highest foot traffic. Therefore, these should be the primary focus when placing sensors. Ceiling-mounted sensors are ideal for these areas as they provide a wide coverage area and are strategically placed to cover the entire length.
- Overlap Coverage on Walkways: To avoid blind spots, ensure that the coverage patterns of the sensors overlap along the walkways. This ensures continuous detection as people move through the space, preventing any gaps in sensor coverage.
- Use a Long Timeout: Given the size and activity level in open offices, use a longer timeout setting (15 or 20 minutes) on the sensors. This prevents the lights from turning off too soon when there’s no movement detected for a brief period.
- Consider Wall-Mounted Sensors: If the cubicle walls are short, consider using wall-mounted sensors in addition to ceiling-mounted ones. These can provide additional coverage and ensure that all areas of the office are monitored.
- Avoid Air Vents: Don’t place sensors near air vents. The vibration and airflow can reduce the effectiveness of the sensors. PIR sensors should not be within 4ft of an air vent, and ultrasonic sensors should not be within 6ft of an air vent.
- Manual Control: Incorporate manual controls that are integrated with the occupancy sensors. This allows for manual override to turn ON/OFF all lighting when necessary.
Featured Products & Solutions
Wall Sensor Switches
RZ020/021 Motion Sensor Switches
- 2-wire, 3-wire, 4-wires wiring options
- Occupancy, Vacancy, Manual ON/OFF
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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.
For open offices < 300 sq. ft:
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.
For open offices > 300 sq. ft:
- The general lighting shall be controlled separately in control zones with floor areas not greater than 600 sq. ft within the open plan office space.
- In each control zone, the general lighting shall be permitted to automatically turn on within the control zone. In other unoccupied zones, the general lighting shall be permitted to turn on to < 20% full power(or unaffected).
- Automatically turn off general lighting in all control zones within 20 minutes after all occupants have left the space.
- In each control zone, the general lighting shall turn off or uniformly reduce lighting power to an unoccupied setpoint of < 20% full power within 20 minutes after all occupants have left.
ASHRAE 90.1 – 2022
For open offices in any sizes:
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.
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
Additionally, for open offices > 300 sq. ft:
9.4.1.1 g Automatic reduction control
The general lighting power in the space shall be automatically reduced by at least 50% within 15 minutes of all occupants leaving the space.
Title 24 – 2022
For open offices in any sizes:
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.
Additionally, for open offices <250 sq. ft:
130.1 (c) 5. Occupant sensing controls are required for specified offices.
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
Additionally, for open offices > 250 sq. ft:
130.1 (c) 6. Full or partial-OFF occupant sensing controls are required for offices greater than 250 square feet.
In office spaces greater than 250 square feet, general lighting shall be controlled with occupant sensing controls that meet all of the following:
- Lighting shall be controlled separately in control zones not greater than 600 square feet. For luminaires with an embedded occupant sensor that are capable of reducing power independently from other luminaires, each luminaire can be considered its own control zone
- The occupant sensing controls shall uniformly reduce lighting power in the control zone by at least 80% full power(or off) in 20 minutes or less after the control zone is unoccupied.
- The occupant sensing controls shall automatically turn off lighting in ALL control zones in 20 minutes or less after the entire office space is unoccupied
- When occupancy is detected:
- in each control zone, lighting shall be allowed to automatically turn on to any level up to full power.
- in other control zones that are unoccupied, lighting shall operate at no more than 20% full power.
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