Research of influence of a heat-transfer intensifier on efficiency of a gas burner

Аuthors

Altunin K. V.

Kazan National Research Technical University named after A.N. Tupolev, Kazan, Russia

e-mail: altkonst881@yandex.ru

Abstract

The article presents the results of experimental research of a novel created gas burner for home gas stoves. This new gas burner has got a special heat-transfer intensifier as a metal rod with the extended heat-transfer surface that is connected with a metal lid. It should be said that all experiments were carried out by use of home stoves of different world names, and additionnally, their gas burners had their own geometry parameters including a lid diameter, a gas-supply channel depth of the gas burner with an average power. During experiments fresh water of different volumes was heated until boiling appearance in a water vessel on the standard gas burner (without any heat-transfer intensifier) and on the new gas burner with the heat-transfer intensifier. Bu use of a membrane type gas meter the spent gas volumes were accurately measured, by use of a stopwatch — spent time, by use of an alcohol-in-tube and an electronic thermometer — temperatures of heating inside the water vessel center. In fact, each experimental study was conducted under the normal atmosphere pressure. The main heat-transfer intensifiers were such as the following ones including the metal rod with a thread and two longitudinal slots; the metal rod with a thread and two extending longitudinal slots; the metal rod with a screw thread (as an auger) without and with a copper wire on the surface. It was really proved that application of the heat-transfer intensifier with extended surface area allowed to increase natural gas economy owing to its high-rate preliminary heating and effective local heat regeneration: obtained economy varied at the ranges from 5.9% up to 14.2% (according to a spent gas volume, depending on a concrete type of the heat-transfer intensifier and its surface). New criterion equations were obtained while transferring heat from the heated heat-transfer intensifier of the rod towards a cold gas stream inside the gas-supply channel as relationships of Nusselt number vs. Reynolds numbers. Generally speaking, the current paper can be treated as a real proof of possibility of economy and efficiency increase of new gas burner application by using the heat-transfer intensifier as a metal rod with extended surface.

Keywords:

gas burner, heat transfer intensifier, natural gas, criterion equation

References

1. https://ru.wikipedia.org/wiki/Spisok_stran_po_dobyche_prirodnogo_gaza [List_of_countries_for_natural_gas_processing] (accessed 02.11.2020)

2. Altunin K.V. Gazovaya gorelka [Gas-burner]. Patent RF, no. 129600, 2013.

3. Altunin K.V. Experimental research on a gas burner with a heat-transfer enhancer in a rod form. High Temperature, 2020, vol. 58, no. 1, pp. 126‒131. DOI: 10.1134/S001 8151X20010010

4. Altunin K.V. Gas burner with improved economical efficiency. Journal of Engineering Physics and Thermophysics, 2017, vol. 90, no. 2, pp. 480–483. DOI: 10.1007/s10891-017-1588-8

5. Altunin K.V. Eksperimental’nye issledovaniya gazovoj gorelki s intensifikatorom teplootdachi [Experimental studies of a gas burner with a heat transfer intensifier]. Vestnik Kаzаnskogo gosudаrstvennogo tekhnicheskogo universitetа im. А.N. Tupolevа — Bulletin of the Kazan state technical university im. A.N. Tupolev, 2017, no. 2, pp. 80–84. In Russ.

6. Karas’ V.I. Gazovaya gorelka Karasya [Karas’ gas burner]. Patent UA, no. 26706, 2007.

7. http://congeniator.com/gorelki-i-konforki (accessed 02.11.2020)

8. GOST 28498–90. Termometry steklyannye kerosinovye. [State Standard 28498-90. Liquid glass thermometers]. Moscow: Standartinform, 2007. 19 с.

9. Buhmirov V.V. Raschet koefficienta teplootdachi [Calculation of the heat transfer coefficient]. Ivanovo: Ivanovskij gosudarstvennyj energeticheskij universitet im. V.I. Lenina, 2007. 37 p. In Russ.

10. Isachenko V.P., Osipova V.A., Sukomel A.S. Teploperedacha [Heat transfer]. Moscow: Energiya, 1965. 424 p. In Russ.

11. Bolgarskij A.V., Muhachyov G.A., Shchukin V.K. Termodinamika i teploperedacha [Thermodynamics and heat transfer]. Moscow: Vysshaya shkola, 1964. 458 p. In Russ.