TY - JOUR
T1 - Study on heat utilization in an attached sunspace in a house with a central heating, ventilation, and air conditioning system
AU - Ma, Qingsong
AU - Fukuda, Hiroatsu
AU - Lee, Myonghyang
AU - Kobatake, Takumi
AU - Kuma, Yuko
AU - Ozaki, Akihito
AU - Wei, Xindong
N1 - Funding Information:
Acknowledgments: This study was in part carried out under the Technology Development for the Application of Solar Energy in Housing Project at NEDO (New Energy and Industrial Technology Development Organization, Kawasaki, Japan). We are deeply grateful for the considerable contributions made by everyone at the FH Alliance (Aichi, Japan) and Ai Home, Inc. (Miyazaki, Japan). The authors would like to express their gratitude to Midori Inoue and Yohei Hama (The University of Kitakyushu, Kitakyushu, Japan) for their contributions.
Publisher Copyright:
© 2018 by the authors.
PY - 2018
Y1 - 2018
N2 - Based on numerical simulations, the heating load reduction effect of an attached sunspace in winter was determined, and the effective heat utilization method and sunspace design were explored. In this paper, we studied the heating load reduction effect using heat from the sunspace and temperature fluctuation of each room at the time of heat use from the sunspace (sending air from the sunspace to the heating, ventilation, and air conditioning (HVAC) machine room and taking the air to the adjacent rooms). In the case of the all-day HVAC system, it was confirmed that a larger capacity of sunspace and not sending air from the sunspace to the adjacent room demonstrated a better heating-load reduction effect. Compared with Model Iw (a house with a window on the exterior of the sunspace opened to external air), Model I (a house with an attached sunspace on the second floor) could save approximately 41% of the total energy. Model II (a house with the attached sunspace both on the first and second floors) could save approximately 84% of the total energy. Sending heat from the sunspace to the adjacent room led to temperature increases in the adjacent rooms. However, if the construction plan is to have the sunspace only on the second floor, the house should be carefully designed, for example, by placing a living room on the second floor.
AB - Based on numerical simulations, the heating load reduction effect of an attached sunspace in winter was determined, and the effective heat utilization method and sunspace design were explored. In this paper, we studied the heating load reduction effect using heat from the sunspace and temperature fluctuation of each room at the time of heat use from the sunspace (sending air from the sunspace to the heating, ventilation, and air conditioning (HVAC) machine room and taking the air to the adjacent rooms). In the case of the all-day HVAC system, it was confirmed that a larger capacity of sunspace and not sending air from the sunspace to the adjacent room demonstrated a better heating-load reduction effect. Compared with Model Iw (a house with a window on the exterior of the sunspace opened to external air), Model I (a house with an attached sunspace on the second floor) could save approximately 41% of the total energy. Model II (a house with the attached sunspace both on the first and second floors) could save approximately 84% of the total energy. Sending heat from the sunspace to the adjacent room led to temperature increases in the adjacent rooms. However, if the construction plan is to have the sunspace only on the second floor, the house should be carefully designed, for example, by placing a living room on the second floor.
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U2 - 10.3390/en11051192
DO - 10.3390/en11051192
M3 - Article
AN - SCOPUS:85047093530
SN - 1996-1073
VL - 11
JO - Energies
JF - Energies
IS - 5
M1 - 1192
ER -
