Following our previous study, which indicated that several occupant-related assumptions in the National Building Code (NBC) of Canada are different from findings in recent measurement-based studies, this study aims to: i) quantify the direct energy impact associated with discrepancies between the current code’s occupant-related assumptions and those obtained from recent measurement-based studies and ii) demonstrate how key NBC requirements could be reevaluated as a result of the new/proposed occupant-related assumptions. In this regard, this paper applies energy modeling and life cycle costing (LCC) to 11 representative archetypes across different Canadian climate zones. First, EnergyPlus simulations were conducted to evaluate the energy impact of the proposed and existing occupant-related assumptions. Second, LCC was used to evaluate code requirements’ economic implications under these two sets of occupant assumptions. Our results indicate that the default occupant-related assumptions used by NBC generally lead to higher predicted heating, but lower cooling, energy consumption. However, heating energy is more significant since heating energy use is typically an order of magnitude higher than cooling energy use for Canadian homes. Our analysis also indicates that the current occupant-related NBC assumptions yield different optimal potential code-compliant upgrades in some cases relative to the new energy-related occupant assumptions.

我们之前的研究表明加拿大国家建筑规范 (NBC) 中的几个与居住者相关的假设与最近基于测量的研究的结果不同，本研究旨在：i) 量化与之间差异相关的直接能源影响当前规范的乘员相关假设以及从最近基于测量的研究中获得的假设，以及 ii) 展示了如何根据新的/提议的乘员相关假设重新评估关键的 NBC 要求。在这方面，本文将能源建模和生命周期成本 (LCC) 应用于加拿大不同气候区的 11 个代表性原型。首先，进行了 EnergyPlus 模拟以评估提议的和现有的与居住者相关的假设的能源影响。第二，LCC 用于评估在这两组乘员假设下规范要求的经济影响。我们的结果表明，NBC 使用的默认乘员相关假设通常会导致更高的预测加热，但更低的冷却能耗。然而，加热能源更为重要，因为加热能源的使用通常比加拿大家庭的冷却能源使用高一个数量级。我们的分析还表明，在某些情况下，与新能源相关的居住者假设相比，当前与居住者相关的 NBC 假设会产生不同的最佳潜在合规升级。能源消耗。然而，加热能源更为重要，因为加热能源的使用通常比加拿大家庭的冷却能源使用高一个数量级。我们的分析还表明，在某些情况下，与新能源相关的居住者假设相比，当前与居住者相关的 NBC 假设会产生不同的最佳潜在合规升级。能源消耗。然而，加热能源更为重要，因为加热能源的使用通常比加拿大家庭的冷却能源使用高一个数量级。我们的分析还表明，在某些情况下，与新能源相关的居住者假设相比，当前与居住者相关的 NBC 假设会产生不同的最佳潜在合规升级。