Abstract
The transient periodic characteristics of flat-plate solar collectors, subjected to the solar intensity fluctuation, were discussed analytically and experimentally. The fluctuation of the flux of global solar radiation in Tokyo was measured and discussed in relation to cloud condition and cloud behaviour. The data were analyzed by power-spectrum analysis to know the dominant fluctuation period. Next, indoor simulations were performed using a bank of infrared lamps. The temperature distribution of flat-plate solar collectors, and their outlet water temperature response were measured under the bank, varying the radiative heat flux periodically. An exact and simple physical model forusual solar collectors was proposed, and its basic equations were derived. Numerical results by these equations showed good agreement with experimental results. The dependencies of outlet water temperature response on various physical parameters, such as heat capacity of the contained water, the water flow rate and the wind velocity over the cover glass, were also discussed by calculations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
