Technology Description
Gree’s innovative Zero Carbon Source cooling technology integrates advanced vapor compression refrigeration, photovoltaic direct-driven technology, evaporative cooling, and ventilation, which efficiently utilizes renewable energy sources and free cooling sources.
The innovative hybrid solution is designed to have an automatic, climate-smart operation in three modes – vapor compression refrigeration, direct evaporative cooling, and ventilation. It can operate individually or in parallel to provide optimized indoor temperature and humidity control according to the weather conditions.
The vapor compression refrigeration system adopts a parallel compression cycle with dual evaporation temperature. It is realized based on a specially-designed triple-cylinder compressor, a low GWP refrigerant, and improved-designed evaporator and condenser. The ventilator, operating in ventilation mode or direct evaporative cooling mode, strives to decrease the indoor cooling load and eliminate the latent load. The energy consumption of the cooling solution can also be decreased by the ventilator even when the outdoor air has a higher enthalpy than the indoor air. A small PV panel is integrated into the power system by a smart modulator for power transformation and distribution.
This climate-adaptive residential air conditioner has 5X lower climate impact than today’s conventional air conditioners. Gree’s cooling solution highlights how the upper efficiency limit of today’s predominant technology—vapor compression technology—can be largely expanded through smart, hybrid design.
More info
Read more about the winning project of Tsinghua University and Gree >
Press release: Breakthrough, Climate-Friendly ACs: Winners of the Global Cooling Prize Announced >