Zero Net Energy Without Adding Zeros to Cost
Reaching an ambitious sustainability goal at Bristol Community College
实现零碳设计的科学大楼，鼓励学生应用课堂所学技巧并且分享跨学科知识
布里斯托尔社区大学斯伯雷加健康与科学大楼
The Sbrega Building frames a new campus green and is responsive to the architectural context of campus, which was built in 1965 and is predominantly composed of two-story brick buildings
斯伯雷加健康与科学大楼作为校园综合建筑，由科学与健康专业辖下众多学科共同使用，体现了基础科学在医疗保健专业上的不同应用层面。
大楼为科学专业，包括田间生物学、生物科技、微生物学和基础化学提供了灵活教学实验室和辅助空间。同时，大楼还为医疗保健等学科提供护理技术培训与模拟实验室、临床实验室科学与医疗辅助实验室以及牙科保健实验室与教学诊所；除教学用途外，诊所将同时服务于社区内的弱势群体。
The building transforms a pedestrian path into an interior concourse (atrium) and covered walkway (arcade)
The arcade runs along the east side of the building and faces a campus lawn strengthening the connection between the building and landscape
The 50,600-square-foot building is highlighted by an atrium that connects labs and serves as a “learning commons.” Achieving zero-net-energy in this building did not impact its $31.5 million construction budget
大楼内各类设施环绕公共学习区排列。光线充足的公共区域如同学生的生活起居空间，不同学科的学生可以聚首一堂，在这里进行非正式的研究学习活动。实验室和中庭之间由玻璃立面分隔，这些玻璃立面由不透明写字板玻璃和透明玻璃组合而成，让人有机会一睹实验室里的情景，探索箇中科学趣味。
Teaching spaces are located around a shared atrium, or student living room, which addresses a shortage of student-oriented study and hangout space on campus, and also creates a continuous inside/outside pedestrian path from the edge to the center of campus
The open monumental stair is highlighted as the main means of circulation, decreasing the use of the elevator
Glazing was optimized and the exterior envelope was designed to high performance standards while also allowing for natural ventilation for the building
Instructional labs are located around the perimeter of the atrium. The interior walls are glazed allowing for daylight to penetrate the labs and for a visual connection to the classroom—putting “learning on display”.
In shoulder seasons given the right weather conditions, significant portions of the building can be naturally ventilated using a combination of automated and manual operations informed by the building management system. The materials and exposed structural systems are inspired by the old mill buildings of Fall River.
The two-story glazing on either end of the atrium provides a visual connection to the campus and also allows for ample daylighting
The open monumental stair is highlighted as the main means of circulation, decreasing the use of the elevator
Glazing was optimized and the exterior envelope was designed to high performance standards while also allowing for natural ventilation for the building
Instructional labs are located around the perimeter of the atrium. The interior walls are glazed allowing for daylight to penetrate the labs and for a visual connection to the classroom—putting “learning on display”.
In shoulder seasons given the right weather conditions, significant portions of the building can be naturally ventilated using a combination of automated and manual operations informed by the building management system. The materials and exposed structural systems are inspired by the old mill buildings of Fall River.
The two-story glazing on either end of the atrium provides a visual connection to the campus and also allows for ample daylighting
面积逾4,700平方米的建筑物不但要设置大量通风柜以及各种高压设备和仪器，还需要特别满足通风和照明要求，建筑物的能源需求因此十分庞大。同时，鉴于麻州政府规定所有州政府拥有的建筑必须符合LEED银级升级认证的要求，包括根据法规节省至少20%的能耗。种种因素促使我们必须从一开始就制定一系列节能措施，以“高效能”为概念来进行建筑设计。
项目因资金筹集需要曾一度在2012年暂停。虽然如此，作为《美国学院与大学校长气候承诺》（ACUPCC）的签署方，校方一直不遗余力推行各种措施，包括着手在校园建设产能达3.2兆瓦的光伏列阵，务求在2050年之前实现《承诺》中的碳中和目标。然而，原来以“高效能”为本的设计方案却需要利用50%的光伏列阵以及足够的天然气来为200户供暖，这种能源模型无法让校方按时实现上述减排目标。在这样的背景下，设计团队重新进行评估，建议校方投资发展“零碳设计（Zero Net Energy）”，意图通过在基地现场产生可再生能源来平衡全年的能耗。尽管策略已经成型，我们接下来要解决的便是在类似建成案例少之又少的情况下，在寒冷的气候下为能源需求庞大的建筑项目实现零碳设计。
A combination of strategies including ventilation, architectural/lighting, heating and cooling all helped the building achieve its ZNE goal without increasing the budget
A ground-source heat pump system heats and cools the building by using the geothermal ground loop as a heat source in the winter and heat sink in the summer
我们为此展开一连串模拟、计算和研究工作，并与擅长先进建筑技术的制造商进行讨论，务求对各种可行方案进行测试。经过多番努力，我们最终制定的方案全面地整合了多种技术和策略，当中包括：大幅减少照明和插塞载荷需求，设计高效能的建筑外墙，设置自然通风系统，容许较大的室温范围，制定局部制冷措施，安装过滤式通风柜和空气质量感应器，减少换气次数，以及引入转轮式热回收系统和混合热泵系统；此外，落实强效的监控和验证措施也有助于确保这些技术和策略得以有效地持续运营。凭借这个设计方案，我们预期新建筑只要依赖不多于20%的光伏列阵便足够应付供暖和制冷需求，且过程中不需要任何化石燃料。更重要的是，零碳设计并不会产生额外造价，不但为校园的未来发展定下重要的准则，也为其它院校树立了良好的榜样。
Sasaki worked in tandem with civil engineers to create a stormwater system that reduces the quantity of runoff directed to the municipal water sewer while increasing the quality of water through the use of planted basins that filter particulates
Stormwater management plan
The stormwater design is fully integrated through a connected series of skillfully planted infiltration basins that offer new habitat spaces while hearkening back to the existing stormwater design of moats and drainage-ways seen throughout campus
Pedestrians are guided along a new network of paths, gardens, and stopping points in the landscape
Bioretention areas are planted with perennials and are designed to sit adjacent to walkways and plazas so that students, employees, and visitors can interact with this efficient stormwater system
Rain garden
Roof water is directed to lush bioretention areas planted with native forbs, perennials, and trees
Bristol Community College John J. Sbrega Health and Science Building is the first zero net energy (ZNE) academic science building in the Northeast United States
Walkway with no-mow area
The stormwater design is fully integrated through a connected series of skillfully planted infiltration basins that offer new habitat spaces while hearkening back to the existing stormwater design of moats and drainage-ways seen throughout campus
Pedestrians are guided along a new network of paths, gardens, and stopping points in the landscape
Bioretention areas are planted with perennials and are designed to sit adjacent to walkways and plazas so that students, employees, and visitors can interact with this efficient stormwater system
Rain garden
Roof water is directed to lush bioretention areas planted with native forbs, perennials, and trees
Bristol Community College John J. Sbrega Health and Science Building is the first zero net energy (ZNE) academic science building in the Northeast United States
Walkway with no-mow area
The project replaced outmoded labs with a hands-on learning environment and establishes a new sustainable model for lab buildings
Glass walls separate labs from the atrium. The glass is partly opaque, and can be used as whiteboards, and partly clear, to allow views into the labs—putting science on display.
Hands-on training facilities serve the growing need for integration of experiential learning into health science education
The Nursing Lab features 10 clinical beds with mannequins spanning the perimeter of the lab with flexible furniture in the center to support prep and debriefs before and after hands-on clinical sessions
Clinical Laboratory Sciences is set up as a biology lab for handling of bodily fluids, pathogens, fungi, and molds, and also accommodating phlebotomy chairs so students can learn blood draw technique
The southern wing of the first floor houses leading-edge educational spaces for Dental Hygiene as well as a Community Clinic. Outfitted with 16 dental hygiene operatories, the Dental Hygiene Operatory Lab supports contemporary hands-on Dental Hygiene education.
Light colored ceilings in the instructional labs reflect light throughout the space
Every lab (other than the Dental Hygiene Teaching Clinic, which is subject to HIPAA regulations) is configured so that there are views from the atrium into the labs
Hands-on training facilities serve the growing need for integration of experiential learning into health science education
The Nursing Lab features 10 clinical beds with mannequins spanning the perimeter of the lab with flexible furniture in the center to support prep and debriefs before and after hands-on clinical sessions
Clinical Laboratory Sciences is set up as a biology lab for handling of bodily fluids, pathogens, fungi, and molds, and also accommodating phlebotomy chairs so students can learn blood draw technique
The southern wing of the first floor houses leading-edge educational spaces for Dental Hygiene as well as a Community Clinic. Outfitted with 16 dental hygiene operatories, the Dental Hygiene Operatory Lab supports contemporary hands-on Dental Hygiene education.
Light colored ceilings in the instructional labs reflect light throughout the space
Every lab (other than the Dental Hygiene Teaching Clinic, which is subject to HIPAA regulations) is configured so that there are views from the atrium into the labs
Through various design & utility interventions, the building was able to achieve Zero Net Energy without increasing the budget on the project—serving as an important benchmark for future campus development and a model for other institutions
想了解更多项目细节，请联系 Fiske Crowell.
