In this research, a test set up for performance comparison of heat pipe based evacuated tube solar collector [HPBETC] and water in glass tube collector are designed and fabricated at (NIT) Kurukshetra. The both the collectors have same area (1.94 m2) and storage capacity. The fluid filling ratio of water & ethylene glycol for heat pipe based evacuated tube solar collector are kept 0.45 to 0.50. In present research, the theoretical analysis is also carried out for both the collectors. The experimental investigations are carried out in winter season from October to January. The performance of both the collector are also compared with tilt angle of inclination but at higher radiation all tilt angles (30°–55°) nearly shows same performance of both the collectors. The experimental result shows that the HPBETC is more efficient than water in glass with 10-20% higher efficiency than water in glass solar collector. The authors also suggest that the efficiency of HPBETC further can be increased by using advanced fluids in heat pipes of higher thermal conductivity such as Nano fluid and composite hybrid Nano fluids instead of water & ethylene glycol.
Volume 11 | 01-Special Issue
Pages: 1091-1096