Authors

Angle coefficients and optimum values of radiator location in the radiator–wall system

DOI: 10.17586/1606-4313-2023-22-3-13-19
UDC 536.46

Angle coefficients and optimum values of radiator location in the radiator–wall system

Krivosheev Vladimir E., Shein V.М. , Nikitin А. А.

For citation: Krivosheev V.E., Shein V.M., Nikitin A.A. Angle coefficients and optimum values of radiator location in the radiator–wall system. Journal of International Academy of Refrigeration. 2023. No 3. p. 13-19. DOI: 10.17586/1606-4313-2023-22-3-13-19

Abstract
Currently, the issues of designing infrared heating systems are gaining increasing relevance. The value of the angular coefficient of radiation is one of the main design values in the processes of heating by radiation. To calculate the value of the required parameter, both analytical and graphoanalytical methods of calculation (flow algebra method) as well as experimental methods, to which the analogy method and light simulation method can be referred to, are used. However, the listed methods for determining angular radiation coefficients in infrared heating systems are difficult in their application to engineering calculations. This research work is aimed at investigating the values of the angular coefficients in the radiator-wall system in an infinite plane-parallel coordinate system and creating a new method of calculation. Based on the obtained patterns and characteristics of the radiant fluxes distribution, a program was developed in MS Excel to determine: the values of the angular coefficients in the system radiator-wall, the optimum distance from the wall to the radiation, as well as the distribution profiles of the irradiance of the wall depending on the height of the rooms and the distance from the wall to the leftmost point of the radiating panel. The parameters obtained as a result of calculation in the program allow significant improving the efficiency of the radiation heating systems for buildings and constructions.

Keywords: radiant heating, angular coefficients, heat flux, coordinate system, thermal comfort, infrared radiator.

All references

1. Bodrov V.I., Bodrov M.V., Smykov A.A. Research of Radiant Heating Systems based on low-temperature infrared emitters. Privolzhsky Scientific Journal. 2019. No 3(51). p. 52-57. (in Russian)

2. Sankina Iu.N., Sulin A.B., Ryabova T.V., Deymi-Dashtebayaz M., Lysev V.I. Justification of the resulting comfortable temperature parameter. Journal of International Academy of Refrigeration. 2021. No 1. p. 28-33. DOI: 10.17586/1606-4313-2021-20-1-28-33. (in Russian)

3. Aviv D., Hou M., Teitelbaum E., Meggers F. Simulating invisible light: a model for exploring radiant cooling's impact on the human body using ray tracing. Simulation. 2022; 0(0). doi: 10.1177/00375497221115735

4. Lyashenko P.S. The study of the angular coefficient of radiation when calculating the process of radiant heat transfer in chamber-type furnaces / P.S. Lyashenko, Y.A. Boev, D.L. Bezborodov. Metallurgy XXI century eyes of the young: Sbornik Doklady V international scientific and practical conference of young scientists and students, Donetsk, 22 May 2019 / Ed. by Kochura V.V. Donetsk: Donetsk National Technical University, 2019. p. 284-286. (in Russian)

5. Vinokurov D.K. Features of correction of angular coefficients of radiant heat transfer in the problems of determination of thermal modes of spacecraft. Proceedings of the Seventh Russian National Conference on Heat Transfer: In 3 volumes, Moscow, October 22-26, 2018. Vol. 3. Moscow: MPEI Publishing House, 2018. p. 34-37. (in Russian)

6. Basov A.A. Combined algorithm for determining the angle coefficient of radiation between polygons by contour integration. Proceedings of the Russian Academy of Sciences. Power Engineering. 2022. no 1. p. 66-80. DOI: 10.31857/S0002331022010034. (in Russian)

7. Vinokurov D.K. Classification of methods for calculating diffuse angular radiation coefficients. Mathematical Modeling. 2019. vol. 31, no 12. p. 57-70. DOI: 10.1134/S0234087919120050. (in Russian)

8. Shadrin V.Yu., Semenov M.F., Ivanov G.I., Matveeva O.I. Two-dimensional irradiance coefficient. Chelyabinsk Physical and Mathematical Journal. 2020. vol. 5, no 2. p. 233-243. DOI: 10.24411/2500-0101-2020-151210. (in Russian)

9. Shein V. Features of Low-Temperature Infrared Radiators Application in Building Heating Systems. Almanac of Scientific Works of Young Scientists of ITMO University: Materials of the Fifty First (LI) Scientific and Educational-Methodical Conference of ITMO University, St. Petersburg, February 02-05, 2022. Vol. 1. Saint-Petersburg, 2022. p. 280-284. (in Russian)

10. Hongli S., Mengfan D., Yifan W., Borong L., Zixu Y., Haitian Z. Thermal performance investigation of a novel heating terminal integrated with flat heat pipe and heat transfer enhancement. Energy. 2021. 236. 121411. DOI: 10.1016/j.energy.2021.121411.

11. Minzhi Y., Serageldin A.A., Radwan A.M., Hideki S., Katsunori N. Thermal performance of ceiling radiant cooling panel with a segmented and concave surface (in Russian). Laboratory analysis. Applied Thermal Engineering. 2021. 196. 117280. DOI: 10.1016/j.applthermaleng.2021.117280.

12. Tsoy A.P., Baranenko A.V., Granovsky A.S., Tsoy D.A. Modeling of unit operation with radiation cooling for air conditioning. Journal of International Academy of Refrigeration. 2019. No 3. p. 3-4. DOI: 10.17586/1606-4313-2019-18-3-3-14. (in Russian)

13. Shatskov A.O. Determination of adiabatic surface temperature in rooms with radiant heating. Teploenergetika. 2021. no 9. p. 64-70. DOI: 10.1134/S0040363621090083. (in Russian)

14. Karagusov V.I. Thermal performance of a radiation heater in the summer period. Omsk Scientific Bulletin. Aircraft and missile and power engineering series. 2019. vol. 3, no 3. p. 26-32. DOI: 10.25206/2588-0373-2019-3-3-26-32. (in Russian)

15. Redko A.A., Kulikova N.V., Burda Yu.A. Numerical analysis of the parameters of radiant heating system with radiant. Problems of Regional Energy. 2020. no 1(45). p. 59-70. DOI: 10.5281/zenodo.3713405. (in Russian)

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