A New Low-Cost Plastic Solar Collector

Table 1

Characteristic average parameters and results for standard flat solar collectors. Efficiency calculated for 𝑇_𝑎 = 10°C, 𝑇_𝑐 = 30°C, 𝑇_𝑚 = 50°C, and 𝐼_𝑛 = 600 W/m²°C.

Collector type	𝑎0 (#)	𝑎1 (W/m^2°C)	Efficiency (%)
Unglazed	0.85	18	−0.35
Single glazing	0.80	8	0.27
Double glazing	0.75	5	0.42