Tag:heat exchanger

№12|2018

ENERGY CONSERVATION

bbk 000000

UDC 536.2 (075)

Kurganova O. Iu., Клеблеев Р. М., Bekshaev A. A.

Determination of thickness of deposits on inner surface of heat
exchangers by solving the inverse heat conduction problem

Summary

At present much attention in industry, construction, power economy and other industries is paid to energy efficiency and energy conservation. Different deposits on the inner surface of heat exchange devices affect their energy efficiency; consequently it is very important to determine the thickness of deposits eliminating heat exchanger opening. Experimental determination has been a complicated technical task; and to solve it special expensive equipment shall be used. For this purpose the use of analytical methods is the best way. Using the obtained analytical solution of the stationary thermal conductivity problem for a double-layer plane wall at inhomogeneous boundary conditions of the first and third kinds an analytical method of determining the thickness of deposits on the inner surface of heat exchangers has been developed by the temperature on their outside surface known from the test. The deposit thickness is determined from the solution of inverse conductivity problem by plugging the experimental temperature value in the formula of exact analytical solution. The obtained ratio is converted to exponential algebraic equation from the solution of which the sought-for deposit thickness is determined.

Key words

, , , ,

 

№1|2012

POWER AND RESOURCE CONSERVATION

bbk 000000

UDC 628.164

AHMEDOV G. Ya.

Removing carbonate deposits from geothermal heating and hot water supply systems

Summary

The method of removing calcium carbonate deposits from geothermal heating and hot water supply systems is considered. The results of experimental studies of dissolving calcium carbonate deposits in geothermal water in heat-exchange equipment by increasing carbon dioxide partial pressure are presented. On the basis of the conducted experiments a method and a flow scheme of dissolving calcium carbonate deposits that provide for elimination of heat loss with geothermal water used for treatment are suggested.

Key words

, , , , ,

 

vstmag engfree 200x100 2

mvkniipr ru