本研究目的在於回應聯合國氣候變遷政府間專家委員會(IPCC)於2019年針對全球氣候議題的呼籲，尋找建築在綠牆系統上的突破。實驗分為兩階段，並從多面向探討綠牆建築系統的植栽表現與建構在亞熱帶地區的其它可能性。

第一階段為建立於不同文獻基礎上的小實驗箱測試。兩個相同設計的小實驗箱被製造，對照組為一般土牆，而實驗組則加植腎蕨。實驗涵蓋不同變因設定，其中包含靜置、外部日照加熱、風環境、內部熱源等，用以觀察亞熱帶區域的植物應用於建築系統的表現。第二階段為統整文獻以及第一階段的資訊後，進行建築尺度的熱舒適觀察。實驗運用兩個大型實驗箱，對照組為磚牆搭配傳統的外掛式植栽牆(LWS)，而實驗組為直接以土壤介質取代一般工程牆的植物冷牆(VCW)。實驗為連續紀錄並根據澆灌時間、次數分成三階的觀察。

根據第一階段實驗結果，植物本身的葉面隔熱效果能在日照模擬下為表面降低近20 °C的溫差，效果隨遠離表面越不明顯，室內溫度僅剩0.3 °C的表現。而蒸散作用的影響儘管薄弱但仍為室內帶來0.15 °C的溫差，並且隨著風速的提升冷卻效益有微幅的上升。

植物冷牆(VCW)在測試中表現出比傳統外掛綠牆(LWS)更好的冷卻效益。在均溫下，表面溫度低了2.2 °C、中間介質層比LWS的空氣層低了1.3 °C、室內與內牆表面則低了0.4 °C。此外，VCW對於外部環境的變化有更快速的反應，在實驗中，LWS的室內溫度觀察到將近2小時的延遲散熱，而VCW幾乎與外界溫度變化同步。同時VCW對於澆灌也有更顯著的溫度變化影響，並有著更好的室內溼度控制。

The aim of this paper is to response to the advocate from the Intergovernmental Panel on Climate Change (IPCC) in 2019, finding breakthroughs and possibilities of green wall systems.

A two-stage test was held. During the first stage, two thermal boxes, one with plants and one without were built. How plants affected to indoor thermal performances in subtropical region was observed under diversity changes of factors, which included non-environmental factors, solar heating, windy condition and interior heating resource. References and results from stage 1 were collected and passed through to the second stage. Two thermal experiment chambers were built under a full scale of architectural dimension. The south surface of the standard chamber was a general brick wall with hung living wall system (LWS), and the test chamber was equipped with the vegetation cooling wall (VCW). The experiment was recorded continually. Basically three phases were made according to the time and times of the irrigation.

Excellent heat shading effect was observed at the surface layer of plant under solar simulated condition during the first stage test of box with plant with up to 20 °C lower in average than box without plant, which usually shows around 40 °C. The cooling effect was shown weaker at more inner areas, approximately 0.3 °C was observed at the room area. The cooling effect of transpiration was unapparent while which still brought up 0.15 °C lower temperature at the room area under windy condition, and had the tendency of increasing when wind speed was enhanced.

Better cooling effect was observed on VCW. In averagely, about 2.2 °C lower was shown at the exterior layer, around 1.3 °C lower was discovered at the middle layer comparing to the air layer in LWS, and 0.4 °C lower at the interior surface and room area. Additionally, more efficient reactions to the environmental changes were observed as well. VCW showed around 2 hours earlier heat dissipation comparing to LWS in room layer. The irrigation also affected more rapidly on the thermal performances of VCW.

[1] Intergovernmental Panel on Climate Change (IPCC). (2018). Summary for Policymakers
[2] CNN (Brandon Miller, Jay Croft). (2018). Planet has only until 2030 to stem catastrophic climate change, experts warn. Available from: https://edition.cnn.com/2018/10/07/world/climate-change-new-ipcc-report-wxc/index.html
[3] INDIPENDENT. (2018). Environment. Experts issue global warning and say world is 'well on the way' to rise of 1.5C. Available from: https://www.independent.co.uk/environment/global-warming-climate-change-temperature-rise-earth-experts-a8563966.html
[4] 3S Market “The Adoption of Global Smart Technology” Information Center. (2018).
The correct way of green house? Passive House and Zero Carbon Building. Available from: https://3smarket-info.blogspot.com/2018/08/blog-post_412.html#
[5] Taiwan Environmental Information Center (Liao KH). (2009). The Theory of Resilience (ver.1): An ecologic system which is reacting like cockroach. Available from: https://e-info.org.tw/node/50429
[6] Taiwan Environmental Information Center (Liao KH). (2009). The Theory of Resilience (ver.2): An ecologic system which is reacting like cockroach. Available from: https://e-info.org.tw/node/50431
[7] Chris van Uffelen. (2011). Façade Greenery (1st edition 2011). Braun Publishing AG. ISBN 978-3-03768-075-9
[8] Richard L. Hindle. (1938). A vertical garden: origins of the Vegetation-Bearing Architectonic Structure and System. Available from: http://horticulturalbuildingsystems.com/wp-content/uploads/2012/04/a-vertical.pdf
[9] Wikipedia. Green Wall. Available from: https://en.wikipedia.org/wiki/Green_wall
[10] Yu-Shiang Huang. (2015). Extensive Green Roof Heat Budget Simulation and Experimental Validation in the Case of Different Soil Moisture Contents. Available from National Taiwan University (NTU) library
[11] Cheng-Hang Liu. (2016). Studies on Thermal Performance of Green Wall with Full-Scale Experimental House. Available from National Taiwan University (NTU) library
[12] Saifi Nadiaa, Settou Noureddinea, Necib Hichema, Damene Djamilaa. (2013). Experimental study of thermal performance and the contribution of plant-covered walls to the thermal behavior of building. Energy Procedia 36 (2013) 995 – 1001
[13] Julià Coma, Gabrie Pérez, Alvarode Gracia, Silvia Burés, Migue, Urrestarazu, Luisa F. Cabez, (2017). Vertical greenery systems for energy savings in buildings A comparative study between green walls and green facades. Building and Environment 111 228-237.
[14] Cristina M. Silva, M. Glória Gomes, Marcelo Silva. (2016). Green roofs energy performance in Mediterranean climate Cristina. Energy and Buildings 116 318–325
[15] F.Olivieri, R. Cocci Grifoni, D. Redondas, J.A. Sánchez-ReséndizdS. Tascini. (2017). An experimental method to quantitatively analyse the effect of thermal insulation thickness on the summer performance of a vertical green wall. Energy and Buildings 150 132-148
[16] Pablo La Rochea, Umberto Berardib. (2014). Comfort and energy savings with active green roofs. Energy and Buildings 82 492–504
[17] Qiuyu Chen, Baofeng Li, Xiaohu Liu. (2013). An experimental evaluation of the living wall system in hot and humid climate. Energy and Buildings 61 298–307
[18] Yude Pan, Richard A. Birdsey, Jingyun Fang, Richard Houghton, Pekka E. Kauppi, Werner A. Kurz, Oliver L. Phillips, Anatoly Shvidenko, Simon L. Lewis, Josep G. Canadell, Philippe Ciais, Robert B. Jackson, Stephen W. Pacala, A. David McGuire, Shilong Piao2, Aapo Rautiainen, Stephen Sitch, Daniel Hayes. (2011). A Large and Persistent Carbon Sink in the World’s Forests. Science 333 988-993
[19] Ming-Yu Ho. (2012). Studies on Removal of Carbon Dioxide by Indoor Plants. NDLTD. Available from: https://hdl.handle.net/11296/4gxefc
[20] Jian-Xiong Liao. (2014). Carbon Dioxide Removed and Oxygen Released Capacity ofThirteen Ferns under Different Light Intensity. NDLTD. Available from: https://hdl.handle.net/11296/uy3c9x
[21] David Tudiwer, Azra Korjenic. (2017). The effect of an indoor living wall system on humidity, mould sporesand CO2-concentration. Energy and Buildings 146 73–86
[22] Marie-Theres Hoelschera, Thomas Nehlsa, Britta Jänickeb, Gerd Wessoleka. (2016). Quantifying cooling effects of facade greening: Shading, transpiration and insulation. Energy and Buildings 114 283-290
[23] Takuya Koyamaa, Mika Yoshinaga, Kei-ichiro Maeda, AkiraYamauchi. (2015). Transpiration cooling effect of climber greenwall with an air gap on indoor thermal environment. Ecological Engineering Volume 83 343-353
[24] Agriculture Knowledge Center. (2008-2015). Refer to https://kmweb.coa.gov.tw/mp.asp?mp=1
[25] Irene Wong, Andrew N. Baldwin. (2016). Investigating the potential of applying vertical green walls to high-rise residential buildings for energy-saving in sub-tropical region. Building and Environment 97 34-39.
[26] Eleftheria Alexandri, Phil Jones. (2008). Temperature decreases in an urban canyon due to green walls and green roofs in diverse climates. Building and Environment 43 (2008) 480–493
[27] Wikipedia. Solar energy. Available from: https://en.wikipedia.org/wiki/Solar_energy