HANAC Senior Residence is located in Queens, New York City, USA. The inauguration took place in 2018, and it is the first affordable senior housing development built for seniors in NYC in more than 30 years. The building has eight floors with 68 housing units and on the ground floor is a pre-school. Shared spaces include community rooms, exterior gardens and terrace all design to enable social interaction. The building incorporates advanced passive house principals that will save up to 75% of energy and at the same time, provide comfortable and healthy housing for seniors. Through the architecture, the building integrates into existing low-rise buildings in the neighbourhood.
The goal was to create housing for senior residents in upper parts of the building and young children on the ground floor pre-school and to encourage for mutually inter-generation activities.
The building has a super-insulated envelope with thermal-bridge free construction and with triple-glazed windows. The building has ventilation with energy recovery. Operable windows are designed to utilise passive solar gains, and with thermal free aluminium frames, with solar heat gain coefficient (SHGC) of 0,3, the overheating is taken care of.
“The building HVAC system is comprised of small energy-recovery ventilators and variable refrigerant flow fan coil units in each apartment. Ventilation in the education facility and the apartment common areas and corridors is provided by large mechanical ventilation with energy recovery. The ventilation system is self-balancing and with high recovery effectiveness. The mechanical ventilation units have high electrical efficiency, low casing leakage and low-cross contamination.”
“As New York aggressively moves to reduce greenhouse gas emissions, the HANAC Senior Residence Passive House building will serve as a trailblazing beacon of best practices, for other developments in the marketplace and public policy officials alike,” said Ken Levenson, president of the nonprofit group New York Passive House. “This building will demonstrate that our low-energy future can be beautiful, comfortable, affordable and safe—for our seniors and all citizens.”
“We’ve done LEED projects for years,” explains Jack Esterson, design partner with the project architect, Think! Architecture and Design, “but Passive House is a much more specific and robust system. Passive House certification makes perfect sense as HANAC holds onto and operates its buildings for a long time and wants to keep energy and maintenance costs low. Being able to save between 60%-80% on your energy bills is a real benefit. Also, the Passive House standard looks to maximise occupant comfort, which was important to HANAC as its user population, seniors, are more sensitive to temperature.”
Presentation by Gahl Sorkin Spanier about HANAC Senior Residence – Passive house – Realizing an Owner´s Vision.
The Association for Energy Affordability, Inc. is dedicated to achieving energy efficiency in new and existing affordable buildings, and low-income communities. The presentation briefly explains Passive House principles and how they were applied at HANAC Senior Residence, such as robust continuous insulation, high-performance fenestrations, thermal bridge free design, airtight envelope and heat recovery ventilation. Furthermore, you will learn about some challenges to realising HANAC’s vision, floor plans, details of the building, information about ventilation strategies for apartments and common areas.
Conference paper by Hugh Crowther, Erdem Kokgil and Katrina Kostin from Proceeding from Passive House Canada Conference, October 2019.
Abstract for the paper. Multifamily residential buildings designed to Passive House are currently the most common commercial application of Passive House. Two key points are the buildings are extremely well insulated and airtight as well as they include a ventilation system. The first point has led buildings to require cooling when the ambient temperature is at or lower than freezing 32°F (0°C). Apartment overheating has led to occupant dissatisfaction. If there is mechanical cooling available, then the call for cooling will address occupant satisfaction but will have a negative impact on annual energy usage and it is hard on the air conditioning equipment (operating air conditioning equipment in cold weather). Having a ventilation system creates the opportunity to use it for passive cooling. This means using the ventilation unit to deliver cool outdoor air to space when outdoor air temperatures permit. This approach has been used on several projects with varying degrees of success. The key issue is zone (apartment) control. Several different controls strategies have been applied with the most promising being local zone ventilation airflow control (passive cooling) as the first stage of cooling.
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Find more information about this building from NYHC.