TY - GEN
T1 - Quantitative comparison of the operational properties of VAV, UFAD and active chilled Beam-DOAS
AU - Kim, Chul Ho
AU - Park, Min Kyeong
AU - Kang, Won Hee
AU - Lee, Kwang Ho
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2019R1A2C2087157).
Publisher Copyright:
© 2020 16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020. All rights reserved.
PY - 2020
Y1 - 2020
N2 - This study used EnergyPlus v.9.3.0 to analyze in detail operational properties and energy performance of energy-saving HVAC systems. This study also aimed to understand the properties of the systems under consideration by investigating the dry-bulb temperature, relative humidity, and airflow rate at major nodes in each system's schematic. Furthermore, we analyzed the cooling energy consumptions by each HVAC system. The HVAC systems selected for this study are the variable air volume (VAV) commonly used in office buildings, under-floor air distribution (UFAD), and active chilled beam (ACB) with dedicated outdoor air system (DOAS). For the same set-point temperature, the VAV and UFAD were operated by varying the airflow rate according to the change of the space thermal load. ACB-DOAS was analyzed as being able to perform air conditioning only with the supply airflow constantly fixed at a minimum outdoor air volume. When using the UFAD and ACB-DOAS, primary cooling energy was reduced by 9.8% and 15.6% compared with VAV, respectively.
AB - This study used EnergyPlus v.9.3.0 to analyze in detail operational properties and energy performance of energy-saving HVAC systems. This study also aimed to understand the properties of the systems under consideration by investigating the dry-bulb temperature, relative humidity, and airflow rate at major nodes in each system's schematic. Furthermore, we analyzed the cooling energy consumptions by each HVAC system. The HVAC systems selected for this study are the variable air volume (VAV) commonly used in office buildings, under-floor air distribution (UFAD), and active chilled beam (ACB) with dedicated outdoor air system (DOAS). For the same set-point temperature, the VAV and UFAD were operated by varying the airflow rate according to the change of the space thermal load. ACB-DOAS was analyzed as being able to perform air conditioning only with the supply airflow constantly fixed at a minimum outdoor air volume. When using the UFAD and ACB-DOAS, primary cooling energy was reduced by 9.8% and 15.6% compared with VAV, respectively.
KW - Active chilled beam (ACB) with dedicated outdoor air system (DOAS)
KW - EnergyPlus
KW - Primary energy consumption
KW - Underfloor air distribution (UFAD)
KW - Variable air volume (VAV)
UR - http://www.scopus.com/inward/record.url?scp=85101643270&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85101643270
T3 - 16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020
BT - 16th Conference of the International Society of Indoor Air Quality and Climate
PB - International Society of Indoor Air Quality and Climate
T2 - 16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020
Y2 - 1 November 2020
ER -
