Abstract
Considering the high demand for cooling, heating and
electricity and with more than 300 annual sunny days, an innovative hybrid
biomass-solar driven micro-scale tri-generation system is proposed to provide
cooling, heating and electricity under Lebanese conditions. The system
comprises an organic Rankine cycle-based combined heat and power unit, a liquid
desiccant dehumidification unit and a dew point evaporative cooling unit. A
complete technical, economic and environmental assessment of the tri-generation
system is performed to assess its applicability and feasibility. Employing a 2
kWe ORC-based CHP unit, the useful heat output ranges between 4.2 and 11.75 kW,
with an electric power capacity between 0.7 and 1.92 kW. The maximum hourly
cooling capacity delivered by the coupled cooling and dehumidification system
is attained in August with 8.7 kW. The tri-generation system allows annual
savings of 8225 USD on the heating bill, 960 USD on the electricity bill and 950
USD on the cooling bill compared to conventional production technologies. In
addition, the CO2 emissions reduction ranges between 3.1 tons in June
and 9.2 tons in March. The results of this study demonstrate the large
potential of using such tri-generation systems under the Lebanese conditions
compared to the conventional separate energy production technologies.
Keywords
Micro-scale tri-generation system Organic Rankine cycle Evaporative cooling Liquid desiccant dehumidification Techno-economic and environmental analysis
References
- Li Shao
- Nesreen Ghaddar
- Clito Afonso
Details
| Primary Language | English |
|---|---|
| Subjects | Engineering |
| Journal Section | Regular Original Research Article |
| Authors | |
| Publication Date | May 23, 2019 |
| Published in Issue | Year 2019 |