IJPAM: Volume 115, No. 3 (2017)

Title

HEAT ABSORPTION BY HEAT-TRANSFER AGENT
IN A FLAT PLATE SOLAR COLLECTOR

Authors

Murat M. Kunelbayev$^1$, Emil Sh. Gaysin$^2$,
Vladimir V. Repin$^3$, Marat M. Galiullin$^4$, Karina N. Abdrakhmanova$^5$
$^{1}$Department of Physics
Kazakh State Women's Teacher Training University
99 Aiteke bi Street, Almaty, 050006, KAZAHSTAN
$^{2}$Department of Transport and Storage of Oil and Gas
Ufa State Petroleum Technological University
1 Kosmonavtov Street, Ufa,
Republic of Bashkortostan, 450062, RUSSIA
$^{3}$Department of Industrial Heat Power Engineering
Ufa State Petroleum Technological University
1 Kosmonavtov Street, Ufa,
Republic of Bashkortostan, 450062, RUSSIA
$^{4}$Department of Mathematics
Ufa State Petroleum Technological University
1 Kosmonavtov Street, Ufa,
Republic of Bashkortostan, 450062, RUSSIA
$^{5}$Department of Industrial Safety and Labor Protection
Ufa State Petroleum Technological University
1 Kosmonavtov Street, Ufa,
Republic of Bashkortostan, 450062, RUSSIA

Abstract

The authors consider heat absorption by heat-transfer agent in a flat plate solar collector as well as construction of such solar collectors. At given effective channel diameter, thermal efficiency of the plant grows as $\phi$ (the ratio of the channel diameter to the distance between channel axes) increases. The upper limit of $\phi$ is restricted by the given temperature of heated water output. It reaches its peak at $t_{k}=t^{w}_{out}$ because $q'_{nk}>> q_{cn}$ ($t_{k}$ is water temperature at the upper part of solar collector, $q'_{nk}$ is the output heat flow and $q_{cn}$ is the input heat flow). All other factors being the same, the thermal efficiency of the plant is reduced but slightly as channel diameter grows from 14 $mm$ to 30 $mm$. The effect becomes stronger as channel diameter is decreased below 14 mm. As water temperature is decreased at the plant output, the thermal efficiency is increased and shifts toward growing $\phi$ values. Under the normal operating conditions of a flat plate solar collector, the maximum practically achievable value of thermal efficiency at $t = 60^{\circ}C$ is 0.28, and it grows to 0.4 as the temperature of output water is reduced by $10^{\circ}C$.

History

Received: May 29, 2017
Revised: July 2, 2017
Published: July 27, 2017

AMS Classification, Key Words

AMS Subject Classification: 74F05, 58J35, 81T28
Key Words and Phrases: solar radiation, thermal efficiency, flat plate solar collector, angle of solar collector

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Bibliography

1
D. Nolte, Strong, Europe's Buildings Under the Microscope, A Country-by-country Review of the Energy Performance of Building, Buildings Performance Institute Europe (BPIE) (2011).

2
C.A. Balaras, K. Droutsa, E. Dascalaki, S. Kontoyiannidis, Deterioration of European apartment buildings, Energy Build, No. 37 (2005), 515-527.

3
I.A. Kapitonov, A.A. Shulus, M.V. Simonova, D.A. Sviredenko, R.T. Shreyner, Green Energy Revolution Perspectives in Modern Russian Economy, International Journal of Economic Perspectives, Vol. 3, No. 10, (2016), 166-175.

4
Bergmann, Fa├žade integration of solar thermal collectors - a new opportunity for planners and architects, Renew Energy World, No. 5 (2002), 89-97.

5
A.G. Hestnes, Building integration of solar energy systems, Sol. Energy, No. 67 (2000), 181-187. https://dx.doi.org/10.1016/S0038-092X(00) 00065-7.

6
M. Munari Probst, C. Roecker, Towards an improved architectural quality of building integrated solar thermal systems (BIST), Sol. Energy, No. 81 (2007), 1104-1116. https://dx.doi.org/10.1016/j.solener.2007.02.009.

7
IEA SHC Task 41 (2012). Retrieved from https://task41.iea-shc.org/.

8
Solabs (2006). SOLABS. Development of unglazed solar absorbers (resorting to coloured selective coatings on steel material) for building facades, and integration into heating systems (solabs) - Project reference: ENK6-CT-2002-00679. Retrieved from https://cordis.europa.eu/project/rcn/67210_en.html.

9
Bionicol (2011). BIONICOL - Project final report. Retrieved from www.bionicol.eu.

10
J.A. Duffie, W.A. Beckman, Solar Engineering of Thermal Processes, Wiley, Hoboken, NJ (2006).

How to Cite?

DOI: 10.12732/ijpam.v115i3.10 How to cite this paper?

Source:
International Journal of Pure and Applied Mathematics
ISSN printed version: 1311-8080
ISSN on-line version: 1314-3395
Year: 2017
Volume: 115
Issue: 3
Pages: 561 - 575


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