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Sustainability 2017, 9(12), 2179; doi:10.3390/su9122179

Study of a Double-Layer Trombe Wall Assisted by a Temperature-Controlled DC Fan for Heating Seasons

1
Department of Architecture, The University of Kitakyushu, Kitakyushu 808-0135, Japan
2
School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
3
Tohata Architects & Engineers, Osaka 541-0043, Japan
4
Department of Architecture and Urban Design, Ritsumeikan University, Kyoto 603-8577, Japan
*
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 23 November 2017 / Accepted: 23 November 2017 / Published: 25 November 2017
(This article belongs to the Section Energy Sustainability)
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Abstract

This paper presents a double-layer Trombe wall assisted by a temperature-controlled direct current (DC) fan. THERB for HAM, a dynamic thermal load calculation software, was used to estimate the heating ability of a double-layer Trombe wall for an office building. We designed a new double-layer Trombe wall that has two ventilated air cavities installed on the south facade of the office building, and a pipe with a temperature-controlled DC fan used to control thermo-circulation. The office building was located in Kitakyushu, Fukuoka, Japan. The temperature of the ventilated air cavity of the double-layer Trombe wall and the indoor temperature were simulated. It was more efficient for the DC fan to start when the ventilated air cavity temperature was 19 °C and the operative temperature of indoor was maintained at 20 °C. The results showed that the double-layer Trombe wall with a temperature-controlled DC fan can reduce yearly heating needs by nearly 0.6 kWh/m3 and improve the performance of a double-layer Trombe wall up to 5.6% (22.7% in November, 8.56% in December, 1.04% in January, 3.77% in February, and 3.89% in March), compared to the double-layer Trombe wall without an air supply. The ventilated (all day) double-layer Trombe wall performed better than the unventilated double-layer Trombe wall in November, December, February, and March. Thus, the potential of a double-layer Trombe wall can be improved with the assistance of a temperature-controlled DC fan. View Full-Text
Keywords: temperature-controlled DC fan; performance; double-layer Trombe wall; THERB for HAM temperature-controlled DC fan; performance; double-layer Trombe wall; THERB for HAM
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ma, Q.; Fukuda, H.; Kobatake, T.; Lee, M. Study of a Double-Layer Trombe Wall Assisted by a Temperature-Controlled DC Fan for Heating Seasons. Sustainability 2017, 9, 2179.

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