ALGORITHM FOR CALCULATION AND REALIZATION OF GENERALIZED METHOD FOR COMPARISON OF EFFECTIVENESS OF DIFFERENT TYPES OF COMPACT HEAT EXCHANGERS WITH ENHANCEMENT OF CONVECTIVE HEAT EXCHANGE IN DUCTS

2009 ◽  
Author(s):  
Victor Ya. Vasiliev ◽  
Svetlana Vinokurova
Keyword(s):  
Heat Exchange ◽  
Convective Heat ◽  
Heat Exchangers ◽  
Convective Heat Exchange ◽  
Compact Heat Exchangers ◽  
Different Types ◽  
Comparison Of Effectiveness

Optimal Shape Selection of Heat Exchangers Surfaces during Convective Heat Transfer

2018 ◽  
Vol 284 ◽  
pp. 1337-1341
Author(s):  
V. Konukhov ◽  
S. Mukhanov ◽  
G. Konukhova
Keyword(s):  
Heat Exchange ◽  
Convective Heat ◽  
Heat Exchangers ◽  
Convective Heat Exchange ◽  
Compact Heat Exchangers ◽  
Coefficient Of Hydraulic Resistance ◽  
Shape Selection ◽  
Periodic Section ◽  
Flow Cross ◽  
Selection Of

The article contains the results of a research in constructing of modern heat exchangers form of heat exchanging surfaces and modes of heat media flux, providing minimum area (size) of heat exchanging apparatus. Decreasing of heat-transferring area is achieved by using different techniques of intensification of convective heat exchange. Intensification of the heat exchange is accompanied by increasing of energy consumption for pumping the coolant. It is concluded that under the conditions of turbulent flow, the transport mechanism does not strongly depend on the shape of the perturbations introduced into the flow, while the tendency to approach the dependences is common to the curves for the considered surfaces, and the experimental data obtained on pipes with a periodic section of the flow cross-section along the length. Using surfaces creating channels with a greater coefficient of hydraulic resistance when creating a compact heat exchangers, which corresponds to surfaces for which the principle of trans-verse flow is realized.

Laminar and Turbulent Natural Convection Simulation with Radiation in Enclosure

2016 ◽  
Vol 818 ◽  
pp. 3-11
Author(s):  
M. Hussen Hasanen ◽  
Hussein J. Akeiber
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Temperature Distribution ◽  
Convective Heat ◽  
Convective Heat Exchange ◽  
Turbulent Natural Convection ◽  
Heating Efficiency ◽  
Partial Heating ◽  
Different Types ◽  
Floor Heating

Several features of heat transfer on enclosing surfaces are discussed including temperature distributions in a room heated by a floor heater. Numerical analyses on radiative and convective heat transfer were carried out against several partial floor heating. Partial floor heating produces different types of temperature distribution between the heated and non-heated places, which is a remarkable characteristics found out in this study. In the heated places, the temperature distribution is almost the same as that of typical floor heating. However, in the non-heated places, air temperature differs by 6 °C (3.6 °Difference) between a point near the floor surface and a point well above that. Heating efficiency of partial heating slightly depends on the set place as well as its Area. Moreover, convective heat exchange constitutes approximately half of the total heat exchange

Sign in / Sign up

Export Citation Format

Share Document