TY - GEN
T1 - Effects of reducing internal heat load on the operation of multi-split type air conditioning system in an office
AU - Tsushima, Sayana
AU - Takahashi, Shuhei
AU - Takai, Emi
AU - Fujisawa, Junta
AU - Tanabe, Shin Ichi
AU - Tanaka, Hiromasa
AU - Kitora, Hisataka
N1 - Publisher Copyright:
© Healthy Buildings Europe 2017. All rights reserved.
PY - 2017
Y1 - 2017
N2 - In this study, the internal heat load and operation of an HVAC system were investigated in an office drawing low internal heat load where multi-split type air conditioning system were adopted. Field and questionnaire surveys and an energy consumption analysis were performed. The designed total cooling capacity of the HVAC system was 158 W/m2, relatively small compared to most systems that have had a 200 W/m2 capacity. However, the average load factor was below 30%. Moreover, it was found that the operation of a dedicated outdoor air system had a large influence on the total electric energy consumption in offices practicing internal load reduction, and that the main cause for the operation change was the humidity setting of the system. Introducing air-conditioning systems with an appropriate smaller capacity and a comprehensive energy-saving operation method, rather than partially optimizing each device, would be beneficial in terms of total energy saving.
AB - In this study, the internal heat load and operation of an HVAC system were investigated in an office drawing low internal heat load where multi-split type air conditioning system were adopted. Field and questionnaire surveys and an energy consumption analysis were performed. The designed total cooling capacity of the HVAC system was 158 W/m2, relatively small compared to most systems that have had a 200 W/m2 capacity. However, the average load factor was below 30%. Moreover, it was found that the operation of a dedicated outdoor air system had a large influence on the total electric energy consumption in offices practicing internal load reduction, and that the main cause for the operation change was the humidity setting of the system. Introducing air-conditioning systems with an appropriate smaller capacity and a comprehensive energy-saving operation method, rather than partially optimizing each device, would be beneficial in terms of total energy saving.
KW - Air conditioning (HVAC) system
KW - Energy consumption
KW - Heating
KW - Low internal heat load office
KW - Ventilation
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M3 - Conference contribution
AN - SCOPUS:85053919910
SN - 9788379472604
T3 - Healthy Buildings Europe 2017
BT - Healthy Buildings Europe 2017
PB - International Society of Indoor Air Quality and Climate
T2 - Healthy Buildings Europe 2017, HB 2017
Y2 - 2 July 2017 through 5 July 2017
ER -