Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
1172 0 |
SM ISO690:2012 ŞIT, Mikhail, ŞIT, Boris, BURCIU, Vitalie, IOIŞER, Anatolii. Heat pump gas cooler control using criterion of minimum of exergy losses. In: Problemele Energeticii Regionale, 2014, nr. 2(25), pp. 47-56. ISSN 1857-0070. |
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Problemele Energeticii Regionale | |||||
Numărul 2(25) / 2014 / ISSN 1857-0070 | |||||
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Pag. 47-56 | |||||
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This paper focuses on the development of the criterion of optimality of transients of
the control system, based on the minimum of exergy losses in the gas cooler of carbon
dioxide heat pump. It is noted that the exergy quality criterion has a clear physical meaning,
as compared with the integral quadratic criterion in which the choice of the coefficients in the
integrand is not justified. Mathematic model of heat exchanger is obtained using the method
of solving differential equations, without going to the irrational transfer functions. The model
is reduced to transfer functions of the first and second order with the delay. The continuous
temperature control system of heat pump gas cooler is considered. It is shown, that one of the
versions of the control system for the minimization of the proposed criterion can be a
combined control system using both the principle of the negative feedback and the principle
of the invariance related to a number of disturbances affecting the processes of heat transfer in
the heat exchanger. |
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Cuvinte-cheie heat pump, carbon dioxide, Control system, exergy, heat exchanger, gas cooler |
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