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Oktawia Kaczmarczyk, Jarosław Mikielewicz
Instytut Maszyn Przepływowych PAN

Abstract
As it is commonly known, heat exchangers are widely used in power generators equipment. The biggest disadvantage of conventional heat exchangers is that, in case of the energy load variation, it must be replaced by the one of different size.
The aim of this work is to specify a method of combining micro channel heat exchangers into a grid, realising different powers. It was ment to specify the most accurate micro channel heat exchangers connection, in order to increase the intensity of the heat exchange process. Studied problem was about heating the ORC working medium (R134a) using waste heat (hot water).
In this paper, there has been studied the fenomenon of the heat exchange process in the micro channel heat exchanger grid, which will be further called the integral heat exchanger. There have been studied three cases of micro channel heat exchangers connections, such as: parallel-parallel, parallel (heating water)-serial (R134a) and parallel (R134a) – serial (heating water). On the basis of the results of the analytical analysis it has been stated, that the serial (heating water)-parallel (R134a 7) micro channel heat exchangers combination is the most suitable for the most intensive heat exchange.

Słowa kluczowe:
mikro kanalikowy wymiennik ciepła, sieć wymienników, ORC

030. Studies on the Micro Heat Exchangers Coupling into Integral Heat Exchanger

Keywords:
micro channel heat exchanger, heat exchangers grid, ORC

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Zadanie Czasopismo, Annual Set The Environment Protection Volume 17. Year 2015 (wersja elektroniczna) dofinansowane ze środków Ministerstwa Nauki i Szkolnictwa Wyższego