Abstract
Single pane glazed flat solar heaters found rather wide application for domestic hot water supply. However, the practice of use shows some discrepancy between estimated and observed data: in one case the temperature of hot water does not conform to the expected pattern, in other case doubts arise about correctness of their sizes, in some cases the quantity of heated water is not enough, etc. Because of such divergence of opinions, it is becoming necessary to think about correctness of existing methods of sizing and designing of flat plate solar water heaters. This article attempts to develop a new structure and improved method for calculation and design of flat plate solar water heaters. Analysis proved relatively higher energy and cost effectiveness of the new structure of flat plate solar water heater.
Highlights
The algorithm of performance of flat plate solar water heater consists of following steps
Descripted mechanism impels to use the mane principals of heat transfer and solar irradiant to developing a new, more energy efficient structure and method for calculation and design of suggested flat plate solar water heater
In bounded spaces like hot tunnel with horizontally laid tubes, the movement of air takes place in laminar regime, in case of which the Nusselt number is evaluated by the following equation [5, 6]: Nu = 0.133Gr0.33 Pr, (5)
Summary
(2) Absorption of penetrated solar radiation by absorber sheet and rising the flat plate absorber’s and the hot tunnel and hotbox air temperatures. P. Garg [1], usually the absorber plate temperature is unknown and is difficult to calculate or measure because it is a function of several parameters. Garg [1], usually the absorber plate temperature is unknown and is difficult to calculate or measure because it is a function of several parameters To solve this problem the authors of this paper used a new approach allowing determining mentioned temperatures. Descripted mechanism impels to use the mane principals of heat transfer and solar irradiant to developing a new, more energy efficient structure and method for calculation and design of suggested flat plate solar water heater
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
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 call
