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Overheating risk assessment of different dwellings during the hottest season of a warm tropical climate

机译：热带热带气候最热门季节的不同住宅风险评估

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Cities with hot tropical climate suffer generally from warm conditions during all year long, which could result on buildings 'overheating' or high energy consumption by cooling. This paper is the first of its kind in Central America, region that lacks studies regarding thermal performance of buildings. This study develops an overheating risk assessment to twelve dwellings of Tegucigalpa, Honduras, with a warm tropical climate, based on 41-day field study measurements of indoor air temperatures during its hottest season of the year. The aim of the study was to find if overheating risk differed depending on the building typology, single-family (SD) or apartment-type (AT), and based on the latter, to what extent roof exposure to solar gains and material properties, such as u-values and thermal mass, are parameters that influence the risk of overheating. The adopted methodology followed CIBSE TM52 Overheating Risk Methodology, and EN15251 and ASHRAE 55 adaptive thermal comfort approaches. Overheating risk was found to vary depending on the residential building typology. Dwellings with high roof exposure and high u-values in roof were found to be 'overheating' more. Following CIBSE TM52 methodology, some AT and SD dwellings experienced hours of exceedance above 3% of occupied hours, reaching up to 12.5% (61 h) and 20.3% (133 h) of occupied hours, respectively. Passive strategies such as improving roof properties (e.g. low u-values), shading and night ventilation may be necessary to reduce the risk of overheating in Tegucigalpa and similar tropical contexts where air conditioning is less affordable.
机译：热带气候的城市普遍遭受全年温暖的条件，这可能导致建筑物过热'或通过冷却能耗高。本文是中美洲中美洲中美洲的第一个，缺乏关于建筑物热性能研究的地区。本研究对Tegucigalpa，洪都拉斯的十二个住宿产生了过热的风险评估，其基于今年最热的季节室内空气温度的41天的现场研究测量。该研究的目的是找到过热风险，取决于建筑类型，单人族（SD）或公寓类型（AT），以及基于后者，在多大程度上接触太阳能收益和材料特性，如U值和热质量，是影响过热风险的参数。采用的方法遵循Cibse TM52过热风险方法，EN15251和ASHRAE 55自适应热舒适方法。发现过热的风险根据住宅建筑类型的不同而有所不同。屋顶上具有高屋顶曝光和高U值的住宅被发现“过热”。在CIBSE TM52方法之后，一些AT和SD住所的占高于3％的占用时间的时间，分别达到12.5％（61小时）和20.3％（133小时）的占用时间。可能需要改善屋顶物质（例如低U值），阴影和夜间通风等被动策略，以降低特克加普帕帕（Tegucigalpa）过热的风险，以及空调不太实惠的热带背景。

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