Design of a hybrid space heating system for residential buildings in cold climate regions

寒冷地区住宅混合采暖系统设计

• 批准号: 531176-2018
• 负责人: Zhong, Lexuan
• 金额: $ 1.61万
• 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=669828
• 关键词: Design; hybrid; space; heating; system

Natural gas forced-air furnaces are the major heating sources for single-family, duplex and row houses in**Alberta. However, the energy efficiency of furnaces is normally low. Air source heat pump (ASHP) technology**is widely accepted for the merits of energy-saving and environmental protection in the mild climate zone.**However, the efficiency of ASHP decreases with temperature. An electrical resistance heater is used as a**backup to meet home's heating needs in extremely cold weather. However, in places like Alberta, obtaining one**unit of heat from electricity costs 2-3 times more than from natural gas, leading to that the utility bill and GHG**emissions from home operations do not go down. The principle of a hybrid space heating system is to let an**ASHP work in mild days while using natural gas furnaces in cold days. There is an immediate demand for**building industry to make a hybrid space heating system feasible for residential applications in cold climate**zone. In this regard, the proposed project aims to provide a technical solution by (1) determining of the critical**temperature to switch between ASHP and furnaces in order to minimize the utility bill and GHG emissions in**home operations; and (2) right sizing the ASHP and furnace hybrid system for different types of residential**buildings.

天然气强制风炉是艾伯塔省**单户、复式和排式房屋的主要供暖来源。然而，加热炉的能效通常较低。空气源热泵技术因其节能环保的优点在温和气候地区得到了广泛的应用。电阻加热器被用作**备用，以满足极端寒冷天气下的家庭取暖需求。然而，在像艾伯塔省这样的地方，从电力获得1**单位的热量比从天然气获得1**单位的热量的成本高出2-3倍，导致公用事业账单和家庭运营产生的温室气体**排放量没有下降。混合式空间供暖系统的原理是让**ASHP在温和的天气下工作，而在寒冷的日子使用天然气炉子。迫切需要**建筑业使混合式空间供暖系统在寒冷气候**地区的住宅应用中变得可行。在这方面，拟议的项目旨在通过以下方式提供技术解决方案：(1)确定在ASHP和炉子之间切换的临界**温度，以便将**家庭操作中的公用事业账单和温室气体排放降至最低；以及(2)针对不同类型的住宅**建筑物适当调整ASHP和炉子混合系统的大小。