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Cited 6 time in webofscience Cited 8 time in scopus
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Development and Validation of Air-to-Water Heat Pump Model for Greenhouse Heatingopen access

Authors
Rasheed, AdnanNa, Wook HoLee, Jong WonKim, Hyeon TaeLee, Hyun Woo
Issue Date
Aug-2021
Publisher
MDPI
Keywords
greenhouse energy modeling; renewable energy; energy-saving screen; greenhouse microclimate control
Citation
ENERGIES, v.14, no.15
Indexed
SCIE
SCOPUS
Journal Title
ENERGIES
Volume
14
Number
15
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/3397
DOI
10.3390/en14154714
ISSN
1996-1073
Abstract
This study proposes a building energy simulation (BES) model of an air-to-water heat pump (AWHP) system integrated with a multi-span greenhouse using the TRNSYS-18 program. The proposed BES model was validated using an experimental AWHP and a multi-span greenhouse installed in Kyungpook National University, Daegu, South Korea (latitude 35.53 degrees N, longitude 128.36 degrees E, elevation 48 m). Three AWHPs and a water storage tank were used to fulfill the heat energy requirement of the three-span greenhouse with 391.6 m(2) of floor area. The model was validated by comparing the following experimental and simulated results, namely, the internal greenhouse temperature, the heating load of the greenhouse, heat supply from the water storage tank to the greenhouse, heat pumps' output water temperature, power used by the heat pumps, coefficient of performance (COP) of the heat pump, and water storage tank temperature. The BES model's performance was evaluated by calculating the root mean square error (RMSE) and the Nash-Sutcliffe efficiency (NSE) coefficient of validation results. The overall results correlated well with the experimental and simulated results and encouraged adopting the BES model. The average calculated COP of the AWHP was 2.2 when the outside temperature was as low as -13 degrees C. The proposed model was designed simply, and detailed information of each step is provided to make it easy to use for engineers, researchers, and consultants.
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Kim, Hyeon Tae
농업생명과학대학 (생물산업기계공학과)
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