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首页> 外文期刊>Journal of Development Economics >How effective is energy-efficient housing? Evidence from a field trial in Mexico
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How effective is energy-efficient housing? Evidence from a field trial in Mexico

机译:节能住房有多效果? 来自墨西哥野外审判的证据

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Despite growing enthusiasm, there is still much to be learned about how well energy-efficiency investments work in practice. Evidence is particularly lacking from low- and middle-income countries, despite a widespread view that these countries have many of the best opportunities. This paper evaluates a field trial in Mexico in which a quasi-experimental sample of new homes was provided with insulation and other energy-efficient upgrades. A novel feature of our study is that we deploy large numbers of data loggers which allow us to measure temperature and humidity at high frequency inside homes. We find that the upgrades had no detectable impact on electricity use or thermal comfort, with essentially identical temperature and humidity levels in upgraded and non-upgraded homes. These results stand in sharp contrast to the engineering estimates that predicted considerable improvements in thermal comfort and up to a 26% decrease in electricity use. As we document, part of the explanation is that most households have their windows open on hot days, nullifying the thermal benefits of roof and wall insulation. Overall, we conclude that the benefits from these investments are unlikely to exceed the costs, which added $650-$850 USD to the cost of each home. Our results underscore the urgent need to fully incorporate human behavior into engineering models of energy use.
机译:尽管积极增长,但仍有很大努力学习能效投资在实践中的工作程度。尽管有广泛的观点,这些国家具有许多最佳机会,但仍然缺乏低收入和中等收入国家特别缺乏证据。本文评估了墨西哥的野外试验,其中提供了新房的准实验样本,并提供了绝缘和其他节能升级。我们研究的新颖特征是,我们部署了大量数据记录器,使我们能够测量在房屋内高频的温度和湿度。我们发现升级对电力使用或热舒适性没有可检测的影响,升级和非升级的房屋具有基本相同的温度和湿度水平。这些结果与工程估算鲜明对比,预测热舒适性和电力使用减少的相当大的改进。正如我们记录的那样,部分解释的是,大多数家庭都在炎热的日子里打开窗户,无需屋顶和墙壁绝缘的热效益。总体而言,我们得出结论,这些投资的益处不太可能超过每家家庭费用为650-850美元的成本。我们的结果强调了迫切需要将人类行为完全纳入能源使用的工程模型。

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