Abstract
The purpose of this study is to analyze the electric energy harvesting efficiency of Venetian blinds according to their design parameters using photovoltaic modules. The size of photovoltaic modules attached to the blind panel and the inclined angle of the blind frame's photovoltaic modules are the primary parameters in its efficiency because of shading effects except geographical characteristics. The ventilation's affect on the temperature decrease of photovoltaic modules in a double-layer window faade was analyzed using a heat exchange network analysis between layers of the photovoltaic module integrated blind (PV-blind). The temperature of the components in a PV-blind and the amounts of harvested energy are calculated with an hourly time step during one sunny day. The maximum temperature of a photovoltaic module without ventilation is almost 78 °C, which means a daily electric energy production rate decrease from 14.1% to 10.4% compared to temperature independent case studies. Blinds with a ventilated faade for buoyancy driven airflow provide a maximum photovoltaic temperature of 58.4 °C and have a greater efficiency at 11.7%..
| Original language | English |
|---|---|
| Pages (from-to) | 86-91 |
| Number of pages | 6 |
| Journal | Energy and Buildings |
| Volume | 46 |
| DOIs | |
| Publication status | Published - Mar 2012 |
Bibliographical note
Funding Information:This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No.2011-0001031).
Keywords
- Heat exchange network analysis
- Photovoltaic module
- Photovoltaic module integrated blind
- Shading effects
- Venetian blind
