Development of 20 integrated energy efficiency ratio rooftop units—system modeling and building energy simulations

Autor: Wendy Liu, Keith Rice, Edward Allan Vineyard, Bo Shen
Rok vydání: 2013
Předmět:
Zdroj: HVAC&R Research. 19:836-846
ISSN: 1938-5587
1078-9669
DOI: 10.1080/10789669.2013.826064
Popis: Based on a detailed steady-state system and component modeling, a rooftop unit system design was developed that is can achieve an integrated energy efficiency rating higher than 20. Fin-and-tube and microchannel heat exchangers were modeled using a segment-to-segment approach, and an AHRI 10-coefficient compressor map used to simulate compressor performance. The system modeling is based on a component-based modeling approach, which facilitates flexible simulation of complicated system configurations. Starting with a baseline system having integrated energy efficiency rating of 16.6, numerous technical options were extensively investigated, i.e., varying compressor sizes, heat exchanger fin densities, fin-and-tube or microchannel heat exchanger, suction line heat exchanger, desiccant wheel, tandem compressor (TD), variable-speed compressor (VS), and condenser evaporative pre-cooling; an innovative system configuration was developed by combining a tandem compression system with a variable-speed compression ...
Databáze: OpenAIRE
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