Air-conditioning systems with dual ducts: An innovative approach to the design of the transport network of air
| Autor: | Chiara Agostini, Annunziata D’Orazio |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0301 basic medicine
Fluid Flow and Transfer Processes Engineering Engineering drawing Environmental Engineering business.industry Transport network dual duct hospital healthcare facilities transport networks of air Network size Building and Construction Automotive engineering 03 medical and health sciences 030104 developmental biology Air conditioning Duct (flow) business Dimensioning |
| Zdroj: | Science and Technology for the Built Environment. 22:281-289 |
| ISSN: | 2374-474X 2374-4731 |
| DOI: | 10.1080/23744731.2016.1130515 |
| Popis: | This article describes a method to dimension the transport networks of air, from the air handling unit to terminal units, for dual duct systems, which provide air distribution through the use of two parallel networks. The method, compared to the methodologies usually adopted or proposed, leads to a reduction of the channel size and therefore of the overall network size and cost as well. Dimensioning criteria usually adopted require the air to flow in the “cold” duct at a temperature lower than the room temperature, while air flows in the “hot” duct at a temperature higher than the room temperature. As an alternative to the traditional design criteria, we present a dimensioning method that requires the “cold” channel to transport air at a temperature value slightly lower (1°C–2°C) than the minimum supply temperature (variable with time) required in each zone. The method is applied here to some reference networks, and the results are compared with those obtained with traditional design criteria. The obtaine... |
| Databáze: | OpenAIRE |
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