Photo: DHSU is the only academic medical center in Brooklyn and trains more New York City doctors than any other medical college. | Photo Credit: SUNY Downstate Health Sciences University
By Lindsey Coulter
BROOKLYN, N.Y. — SUNY Downstate Health Sciences University (DHSU) recently celebrated the completion of a critical update to the facility’s air handling units to better support medical and educational operations. The $10 million project required two years of study and design followed by two years of construction.
SUNY DHSU engaged engineering firm RMF to address concerns about the hospital’s five rooftop-mounted air handling units (AHUs), which were nearing the end of their useful life and used R-22, a refrigerant no longer manufactured due to environmental concerns. The RMF team completed a comprehensive field survey to document existing conditions. Airflow readings were recorded to determine baseline performance, while pressure readings were documented to determine operating static pressure and record heating water flow.
RMF analyzed the findings to develop a feasibility report that provided upgrade and replacement options that highlighted maintenance impacts, energy efficiency optimization, and the least disruptive construction phasing and construction cost estimates. The evaluation included a code assessment, potential upgrades to the energy management and electrical systems, ventilation air calculations using energy modeling software, full heating and cooling load calculations, filtration options and review of the existing ductwork.
Developed in coordination with the State University Construction Fund and DHSU, RMF’s implementation included concept-level phasing and sequencing plans for replacing the three AHUs serving the Labor and Deliver, NICU and PIRR/MRI critical care units. RMF also designed the new AHUs sized to accommodate more outside air than required by code –– requested by DHSU to provide increased capacity of Remote Terminal Units for future expansion –– and incorporate high-rating filters and ultraviolet lighting to improve indoor air quality. The existing electrical and building automation systems were extended to provide power and controls for the new equipment.
As the affected areas had to always remain operational, the project was completed in three construction phases and used newly installed equipment, including temporary units requested by DHSU which were installed for NICU and PIRR/MRI areas during construction to provide temporary air while subsequent equipment was replaced. Construction staging was planned to coordinate with DHSU operations and remain within the urban site’s limited available space.
“We aimed to enhance the capabilities of the hospital while ensuring there was little impact to its operations throughout construction, underscoring the importance of planning,” said Rich Heim, project manager at RMF. “We needed to be mindful of the sensitive and urgent needs of the areas the units impacted, implementing careful coordination that facilitated a seamless transition.”
DHSU is the only academic medical center in Brooklyn and trains more New York City doctors than any other medical college. It has also received $1.1 billion in state investment for its larger renovation to preserve and enhance service to the community.
“This project was designed and executed with the hospital’s future flexibility in mind,” said Heim. “To support modifications for years to come, we provided 10 percent additional airflow capacity, impacting the labor and delivery, NICU, and PIRR and MRI units and giving them the opportunity to advance their level of care as each practice evolves.”
Li added that, as safety precautions increased in the wake of the Covid-19 pandemic, the firm wanted to make sure the hospital was equipped to handle similar situations should they arise in the future.
The project team also included architecture firm Azar Design Co., structural engineering firm Siracuse Engineers PC, hazardous material abatement firm Encorus Group and cost estimator Trophy Point.