Assessment of Air-Source Heat Pumps for Net-Zero Homes in Cold Climate

寒冷气候下净零住宅空气源热泵的评估

• 批准号: 523104-2018
• 负责人: Komrakova, Alexandra
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=655839
• 关键词: Assessment; Air; Source; Heat; Pumps

An Edmonton-based company, Habitat Studio, designs and builds energy-efficient environmentally benign**Net-Zero homes. The existing heating/cooling system relies on use of air-source heat pumps. These pumps are**efficient at warm and mild climates. However, when the outside temperature decreases significantly (-20 C and**lower), they require backup electric heating elements which is an expensive solution of the problem. Therefore,**the overall efficiency of the net-zero home design reduces.**In this project, a possibility to modify the existing heating system in a way to avoid expensive heating elements**for the pump will be explored. The main outcomes will be rating of the coefficient of performance of these**pumps in well-controlled laboratory conditions at low outside temperatures of -20 C and below, in-situ**assessment of the cold climate air-source heat pumps installed in several homes in Edmonton, and outlining of**the ideas on how to achieve the high efficiency of air-source heat pumps at low outside temperatures. The**results of the project will contribute significantly to Habitat Studio for the modification of the present and**improvement of the future home designs. If the coefficient of performance of the pump is above 1.0, the roof**area required for the solar photovoltaic (PV) system can be reduced.**The assessment of the cold climate air-source heat pumps leads to benefits not only for the company, but for**the Canadians. Pumps' performance data at cold climate conditions is highly needed to improve the efficiency**of the Net-Zero home design. More efficient home design has long-term advantages for the Canadians since it**reduces energy consumption and CO2 footprint.

一家总部位于埃德蒙顿的公司，人居工作室，设计和建造节能环保 ** 净零家园。现有的加热/冷却系统依赖于使用空气源热泵。这些泵在温暖和温和的气候下是高效的。然而，当外部温度显着下降（-20摄氏度和 ** 更低）时，它们需要备用电加热元件，这是一个昂贵的问题解决方案。因此，** 净零家居设计的整体效率降低。在该项目中，将探索修改现有加热系统的可能性，以避免昂贵的泵加热元件 **。主要成果将是这些 ** 泵的性能系数在良好控制的实验室条件下，在-20摄氏度及以下的低外部温度，在现场 ** 评估寒冷气候空气源热泵安装在几个家庭在埃德蒙顿，并概述 ** 的想法如何实现高效率的空气源热泵在低外部温度。该项目的 ** 成果将大大有助于人居工作室修改目前和 ** 改善未来的家居设计。如果泵的性能系数大于1.0，则可以减少太阳能光伏（PV）系统所需的屋顶面积。对寒冷气候空气源热泵的评估不仅对公司有利，而且对加拿大人有利。泵在寒冷气候条件下的性能数据是非常需要的，以提高效率 ** 的净零家居设计。更高效的家居设计对加拿大人来说具有长期优势，因为它可以减少能源消耗和二氧化碳排放量。