Introduction
As part of the NYSERDA NextGen Building Innovation Program, Sunamp installed its PCM heat batteries in a home in Montauk, NY, to optimize solar thermal energy use and minimize reliance on an oil-fired boiler during colder months. This project aligns with New York State’s commitment to achieving an 85% reduction in greenhouse gas emissions by 2050, demonstrating the potential of thermal storage to accelerate clean energy adoption in residential settings.
The home, occupied by two adults, previously used a solar thermal system for summer domestic hot water (DHW) and an oil-fired boiler for winter. By introducing Sunamp’s Thermino thermal storage, the project delivered significant environmental and economic benefits.
Challenges
- Seasonal dependence on an oil-fired boiler for winter DHW needs.
- Underutilization of solar thermal energy during peak production periods.
The heat from the solar thermal array was previously stored in a 120-gallon indirect storage tank with backup provided by an oil-fired boiler with a 40-gallon indirect storage tank.
The Sunamp solution
The existing solar thermal array remains in position for use to heat the Thermino 300i P58 in order to provide domestic hot water supply. A blending valve/small tank is necessary to control the temperature of the water coming from the solar system to guarantee the integrity of the phase change material.
A heating element in the thermal battery will be used as a backup heat source to provide hot water to the house in days with solar restrictions.
