| Autor: |
Patrick J. Geoghegan, Randall Lee Linkous, Abdolreza Zaltash, Edward Allan Vineyard, Andrei Petrov |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Volume 15: Sustainable Products and Processes. |
| DOI: |
10.1115/imece2007-41381 |
| Popis: |
A frost growth model is incorporated into a Computational Fluid Dynamics (CFD) simulation of a heat pump by means of a user-defined function in a commercial CFD code. The transient model is applied to the outdoor section of an Integrated Active Desiccant Rooftop (IADR) unit in heating mode. IADR is a hybrid vapor compression and active desiccant unit capable of handling 100% outdoor air (dedicated outdoor air system) or as a total conditioning system, handling both outdoor air and space cooling or heating loads. The predicted increase in flow resistance and loss in heat transfer capacity due to frost build-up are compared to experimental pressure drop readings and thermal imaging. The purpose of this work is to develop a CFD model that is capable of predicting frost growth, a potentially valuable tool in evaluating the effectiveness of defrost-on-demand cycles. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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