Experimental studies on solar flat plate collector with internally grooved tubes using aqueous ethylene glycol

Journal Article · Sat Jul 15 04:00:00 EDT 2017 · Applied Solar Energy (Online)

DOI:https://doi.org/10.3103/S0003701X17030112· OSTI ID:22793185

Upadhyay, Vidhi; Rashmi,; Raja Sekhar, Y. ^[1]; Reddy, Bharath ^[2]

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1. VIT University, School of Mechanical Engineering (India)
2. University of South Florida (United States)

In order to cope up with the increase in energy demand and decline in fossil fuels, it has become imperative to use renewable resources efficiently. Among these renewable resources, solar thermal energy is abundant in nature. Solar water heating systems are one of the most important applications of solar thermal energy. Providing internal fins to absorber tube is the technique to improve heat transfer augmentation. Hence in the present study, experiments were performed on solar flat plate collector with different cross section of absorber tubes (plain tube and internally grooved tubes with different helix angles) and by varying the mass flow rates of the working fluids. This study reports the experimental results of flat plate collector, where the working fluid is water and aqueous ethylene glycol (50 : 50). Temperature profile of grooved absorber tube will be compared with plain tube. Since conversion efficiency of solar devices is low, the present study mainly focuses on improving the efficiency of solar flat plate collector.

• OSTI ID: 22793185
• Journal Information: Applied Solar Energy (Online), Journal Name: Applied Solar Energy (Online) Journal Issue: 3 Vol. 53; ISSN 1934-9424
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
COMPARATIVE EVALUATIONS
EFFICIENCY
ENERGY DEMAND
ETHYLENE GLYCOLS
FLAT PLATE COLLECTORS
FLOW RATE
FOSSIL FUELS
HEAT TRANSFER
HEATING SYSTEMS
SOLAR WATER HEATING
TUBES
WORKING FLUIDS