The peak outdoor efficiency on a clear sky day was 26.8±1.5%.
The outdoor efficiency with a combination of a plastic Fresnel lens, made by low-cost injection molding, reached 27% on a hot summer day under 35.0 °C ambient temperature without additional cooling.
In addition, we have also demonstrated high-efficiency and large-area (7000 cm2) concentrator InGaP/InGaAs/Ge 3-junction solar cell modules of an outdoor efficiency of 27% as a result of developing high-efficiency InGaP/InGaAs/Ge 3-junction cells, low optical loss Fresnel lens and homogenizers, and designing high thermal conductivity modules.
The new technologies are being investigated that provide high speed, capacity, spectral efficiency, energy efficiency, pseudo outdoor communication, etc. that solves the existed problems in mobile communication system.
"It's a bigger determinant of what people breathe in than outdoor air". Both energy efficiency and health promotion were central to plans for the Bullitt Center, noted Hayes, who also coordinated the U.S.' first Earth Day in 1970.
Severity of seasonal influenza epidemics were not only determined by virus transmission efficiency and outdoor weather conditions, but also largely affected by host resistance, indoor living environment and social behavior [ 5].
Tests are carried out in a representative vending machine system (cassette) at two representative outdoor ambient temperatures of 32.2°C (efficiency test), and 40.5°C (capacity test) and return air temperatures of 2°C, 20°C and 38°C.
In previous studies, however, fixed NV operating strategies were usually pre-defined, ignoring the weather condition variations over the whole operation process, the influence of outdoor humidity on NV's efficiency, and NV's integrated performance with active air conditioning systems.
Figure 14 compares the spectral efficiency CDFs of outdoor users.
Good news for energy efficiency, and keeping outdoor air pollution out – but potentially bad news for creating indoor air pollution.
