Tubular type heat flux meter for monitoring internal scale deposits in large steam boilers

doi:10.1080/01457630601066889

Abstract

The deposition of scale on the inner surfaces of the water-wall tubes in the high heat flux regions in a steam boiler furnace can cause serious operation problems. In this paper, a numerical technique for determining the heat flux absorbed by the water-wall tubes, water-steam temperature, and thermal resistance on the inner tube surface from a temperature measured at several interior locations of the tube wall is developed. The scale deposition tube is capable of monitoring changes in the flow of heat transfer caused by scale depositions and changes due to varying furnace conditions. It can work for a long time in the destructive high-temperature atmosphere of a coal-fired boiler. The scale deposition monitor is an online plant monitoring system designed to improve the operation of steam boilers and enhance tube life.

Technology of cleaning of the boilers of thermal electric power stations of scale and copper deposits with inhibited acid solutions and trilon B

Mindyuk, A.K. ; Sholok, V.I. ; Tkach, A.D. ; ... November 1987 - Sov. Mater. Sci. (Engl. Transl.); (United States)

The authors review the descaling and surface cleaning technologies used by a variety of thermal power plants throughout the Soviet Union and comparatively assess the performance of a number of organic and inorganic acid solvents and corrosion inhibitors in the protection and scale control of generator steels. The dissolution of copper and other scale deposits and the reduction of hydrogen embrittlement of these steels by these agents are determined.
DOI: 10.1007/BF00720900
LARGE SCALE EXPERIMENTS ON HEAT TRANSFER AND HYDRODYNAMICS WITH STEAM-WATER MIXTURES: CRITICAL HEAT FLUX AND PRESSURE DROP MEASUREMENTS IN ROUND VERTICAL TUBES AT THE PRESSURE OF 51 KG/CM*SUP 2/ ABS. Topical Report No. 2

Alessandrini, A. ; Peterlongo, G. ; Ravetta, R. December 1963
LARGE SCALE EXPERIMENTS ON HEAT TRANSFER AND HYDRODYNAMICS WITH STEAM-WATER MIXTURES. FURTHER CRITICAL POWER AND PRESSURE DROP MEASUREMENTS IN ROUND VERTICAL TUBES WITH AND WITHOUT INTERNAL OBSTACLES. Topical Report No. 5

Peterlongo, G. ; Ravetta, R. ; Riva, V. ; ... November 1964
STARTUP METHODS AND OPERATING EXPERIENCE WITH CHANNEL-TYPE, URANIUM- GRAPHITE REACTORS WITH TUBULAR FUEL ELEMENTS AND NUCLEAR SUPERHEAT OF STEAM. (in Russian)

Aleshchenkov, P.I. ; Zvereva, G.A. ; Kireev, G.A. January 1971 - At. Energ. (USSR) 30: No. 2, 137-44(Feb 1971).
DOI: 10.1007/BF01139493
Slag monitoring system for combustion chambers of steam boilers

Taler, J. ; Taler, D. July 2009 - Heat Transfer Engineering

The computer-based boiler performance system presented in this article has been developed to provide a direct and quantitative assessment of furnace and convective surface cleanliness. Temperature, pressure, and flow measurements and gas analysis data are used to perform heat transfer analysis in the boiler furnace and evaporator. Power boiler efficiency is calculated using an indirect method. The on-line calculation of the exit flue gas temperature in a combustion chamber allows for an on-line heat flow rate determination, which is transferred to the boiler evaporator. Based on the energy balance for the boiler evaporator, the superheated steam mass flow rate ismore »« less
DOI: 10.1080/01457630902754175

Title: Tubular type heat flux meter for monitoring internal scale deposits in large steam boilers

Abstract

Citation Formats

Technology of cleaning of the boilers of thermal electric power stations of scale and copper deposits with inhibited acid solutions and trilon B

LARGE SCALE EXPERIMENTS ON HEAT TRANSFER AND HYDRODYNAMICS WITH STEAM-WATER MIXTURES: CRITICAL HEAT FLUX AND PRESSURE DROP MEASUREMENTS IN ROUND VERTICAL TUBES AT THE PRESSURE OF 51 KG/CM*SUP 2/ ABS. Topical Report No. 2

LARGE SCALE EXPERIMENTS ON HEAT TRANSFER AND HYDRODYNAMICS WITH STEAM-WATER MIXTURES. FURTHER CRITICAL POWER AND PRESSURE DROP MEASUREMENTS IN ROUND VERTICAL TUBES WITH AND WITHOUT INTERNAL OBSTACLES. Topical Report No. 5

STARTUP METHODS AND OPERATING EXPERIENCE WITH CHANNEL-TYPE, URANIUM- GRAPHITE REACTORS WITH TUBULAR FUEL ELEMENTS AND NUCLEAR SUPERHEAT OF STEAM. (in Russian)

Slag monitoring system for combustion chambers of steam boilers