Modular compact net zero trigeneration energy system
"Energy Cube"
University of Niš, Faculty of Mechanical Engineering, Serbia
About
Energy cube is a modular compact solar powered trigeneration system for heating, cooling and electricity production. Its operation is based on the conversion of solar energy using photovoltaics with solar tracking, while heating and cooling is provided using a heat pump. The system takes advantage of heat and electricity storage. The system performance is optimized with the goal to reach annual net zero energy production.
The prototype at the Faculty of Mechanical Engineering, University in Nis has the electrical power rating of 3.1 kW, and 4.2 kW of heating and cooling power. The system has scalability potential up to 23kW electrical power.
Features
- Automatic dual axis solar tracking based on the GPS sensor location for up to 38% greater annual electricity yield compared to the fixed rooftop installations
- Optimized system performance enabling simultaneous electricity and heating/cooling supply
- Outdoor monoblock system with easy low cost installation which does not require indoor space for equipment
- No emissions thanks to the utilization of solar energy
- On grid or off grid operation enables sending excess electricity to the grid
- Foldable design for transport enables utilization in construction sites and remote areas without energy grids
- Optional hydrogen fuel cell power with long term storage can provide annual zero net emission energy supply
- High level of automation enables easy plug&play operation for users
- Expected lifetime of 20 years
Applications
Applications with electricity or space heating or cooling demands (agriculture, construction sites, remote locations, back-up energy supply for sensitive users such as hospitals). A single energy cube can provide net zero emission energy supply to an energy efficient home of up to 70 m2.
Benefits
Global:
- Saves 1.35 to 1.7 CO2 t/year for a typical European household (EU ETS equivalent 136 to 171 €/year)
- Saves 13.5 CO2 t/year compared to a diesel engine generator (EU ETS equivalent 1354 €/year)
For customer:
- Running costs lower up to 80% compared to conventional solutions with a gas boiler and rooftop photovoltaics with a ROI of 5 years
- No running costs (net zero energy) with the hydrogen module
- No logistical problems (supplying diesel fuel to remote areas) with up to 2 years ROI compared to a diesel Engine generator set.
