Arkansas zero energy renovation

A Zero Energy Renovation and Transforms an Energy Guzzling Home

Revell Retrofit Northhampton, MA Zero Energy Project Case Study This renovation transformed this building from an energy guzzler to a resilient and healthy spacious 2-family, designed to use less energy than it produces. Careful planning resulted in high efficiency of the building envelop, of the heating, cooling and ventilation systems. The solar panels provide the […]

optical refrigeration

New Research in Optical Refrigeration with Quantum Efficiency Results

Optical refrigeration for ultra-efficient photovoltaics SPIE, March 25, 2015 We studied endothermic PL experimentally at high temperatures7 and have shown how, in accordance with theory, the PL photon rate is conserved with increasing temperature, while each photon is blue-shifted (becomes more energetic). A further rise in temperature leads to an abrupt transition to thermal emission […]