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首页> 外文会议>American Council for an Energy-Efficient Economy;ACEEE Summer Study on Energy Efficiency in Buildings >To Duct or Not to Duct: Evaluating the Space Conditioning Impacts of Heat Pump Water Heaters in the PNNL Lab Homes
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To Duct or Not to Duct: Evaluating the Space Conditioning Impacts of Heat Pump Water Heaters in the PNNL Lab Homes

机译：输送管道还是不输送管道：评估PNNL实验室家中热泵热水器的空间调节影响

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摘要

Heat pump water heaters (HPWH) are a promising technology for substantially reducingrnwater heating-related energy use in the residential sector. However, concerns have been raisedrnregarding the impact of HPWHs on space conditioning energy when installed in conditionedrnspace, primarily in northern climates. For example, the Northwest Energy Efficiency Alliancern(NEEA’s) Northern Climate HPWH Specification, which describes the performance criteria arnHPWH must have to be incentivized in cold climates in the Pacific Northwest, requires exhaustrnducting for their Tier II-specified products and both supply and exhaust ducting for the Tier IIIspecifiedrnproduct (NEEA 2013). However, these concerns and installation recommendations arernbased on modeling, and comparative field data are not available to verify modeled performance.rnThis study examines the overall performance and operation of two HPWHs in conditioned spacernin the matched pair of PNNL Lab Homes1 with no ducting, exhaust ducting, and full ductingrn(supply and exhaust), and it explores the interactions between the HPWH and the home’srnheating/cooling system. The data collected in this field evaluation suggest that previousrnmodeling may not completely characterize the complex interactions of HPWHs, HVAC systems,rnand ducting. This report discusses the impact on space conditioning and water heater energy usernwhen configuring an HPWH with exhaust only ducting or full ducting, as compared to anrnunducted HPWH. Additional cost analysis is necessary to assess the cost effectiveness of ductingrnand to make formal recommendations regarding appropriate installation of HPWHs in morernvaried scenarios.
机译：热泵热水器（HPWH）是一种有前途的技术，可显着减少住宅领域与水加热相关的能源使用。但是，人们已经开始关注在安装在有条件的空间中（主要是在北部气候中），高功率微波对空间调节能量的影响。例如，西北能源效率联盟（NEEA）的北部气候HPWH规范，描述了在西北太平洋的寒冷气候中必须激励arnHPWH的性能标准，要求其Tier II特定产品的排气管以及供气和排气管适用于III级指定产品（NEEA 2013）。但是，这些关注点和安装建议是基于建模的，并且没有可用的现场数据来验证建模的性能。这项研究检查了配对的PNNL Lab Homes1中装有隔离管的两个HPWH的整体性能和运行情况，没有管道，排气管道，以及完整的管道（供气和排气），并探讨了HPWH与房屋的加热/冷却系统之间的相互作用。在现场评估中收集到的数据表明，先前的建模可能无法完全表征HPWH，HVAC系统，管道的复杂相互作用。本报告讨论了与采用纯管道的HPWH相比，配置仅采用排气管道或全管道的HPWH对空间调节和热水器能源用户的影响。需要进行额外的成本分析，以评估风管的成本效益，并就在更多情况下适当安装HPWH提出正式建议。

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