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EnglishIn this work, entropy generation analysis is used in the search for the optimal design of a mixer for sanitary water. An innovative design of the device is considered: hot water and cold water enter a manifold from five orifices, which opening is controlled by actuators, depending on the requested mass flow rate and average temperature. The design variables are the position of the various orifices, which are modified in order to minimize the mixing length and response time of the device, as well as the global pressure losses. Analysis is conducted using a thermofluid dynamic model which includes continuity, momentum and energy equations, that are solved using a commercial code. Results are then used to calculate the entropy generation distribution, in order to properly consider the various sources of irreversibilities, some of which are necessary (thermal mixing) and some undesired (pressure losses).
SECOND LAW ANALYSIS OPTIMAL DESIGN OF A MIXER FOR SANITARY WATER / Adriano Sciacovelli; Vittorio Verda; Stefano Mauro. - ELETTRONICO. - (2014). ((Intervento presentato al convegno ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis tenutosi a Copenhagen (DK) nel 25-27 giugno 2014 [10.1115/ESDA2014-20504].
| Titolo: | SECOND LAW ANALYSIS OPTIMAL DESIGN OF A MIXER FOR SANITARY WATER | |
| Autori: | ||
| Data di pubblicazione: | 2014 | |
| Abstract: | In this work, entropy generation analysis is used in the search for the optimal design of a mixe...r for sanitary water. An innovative design of the device is considered: hot water and cold water enter a manifold from five orifices, which opening is controlled by actuators, depending on the requested mass flow rate and average temperature. The design variables are the position of the various orifices, which are modified in order to minimize the mixing length and response time of the device, as well as the global pressure losses. Analysis is conducted using a thermofluid dynamic model which includes continuity, momentum and energy equations, that are solved using a commercial code. Results are then used to calculate the entropy generation distribution, in order to properly consider the various sources of irreversibilities, some of which are necessary (thermal mixing) and some undesired (pressure losses). | |
| ISBN: | 9780791845844 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| ESDA2014-20504.pdf | Articolo pubblicato | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2599765
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