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Approach to Heat-Exchanger Design

There are two basic approaches to heat-exchanger design for low temperatures (1) the effec tiveness-NTU approach and (2) the log-mean-temperature-difference (LMTD) approach. The LMTD approach is used most frequently when all the required mass flows are known and the area of the exchanger is to be determined. The effec-... [Pg.1131]

R. K. Shah, Multidisciplinary Approach to Heat Exchanger Design, in Industrial Heat Exchangers, J-M. Buchlin (ed.), Lecture Series No. 1991-04, von Kdrmdn Institute for Fluid Dynamics, Belgium, 1991. [Pg.1400]

The approach to heat exchanger network design discussed so far is based on the creation of an irreducible structure. No redundant features were included. Of course, when the network is optimized, some of the features might be removed by the optimization. The scope for the optimization to remove features results from the assumptions made during the creation of the initial structure. However, no attempt was made to deliberately include redundant features. [Pg.394]

The approach to heat exchanger network design discussed so far was based on the creation of an irreducible structure. [Pg.416]

The major advantage of the superstructure approach to heat exchanger network design is that, in principle, it is capable... [Pg.418]

This approach to heat exchanger network retrofit allows modifications to be introduced one at a time. In this way, the designer has control over the complexity of the network retrofit. At each stage, a suggested modification can be... [Pg.423]

Podhorssky, M. and Krips, H. Heat Exchangers A Practical Approach to Mechanical Construction, Design, and Calculations (Begell House, 1998). [Pg.785]

The Geothermal Response Test as developed by us and others has proven important to obtain accurate information on ground thermal properties for Borehole Heat Exchanger design. In addition to the classical line source approach used for the analysis of the response data, parameter estimation techniques employing a numerical model to calculate the temperature response of the borehole have been developed. The main use of these models has been to obtain estimates in the case of non-constant heat flux. Also, the parameter estimation approach allows the inclusion of additional parameters such as heat capacity or shank spacing, to be estimated as well. [Pg.190]


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