Development of a Direct-to-Suite Ventilation System for Multi-Unit Residential Building Retrofits

开发用于多单元住宅楼改造的直接到套房的通风系统

• 批准号: 541951-2019
• 负责人: Touchie, Marianne
• 金额: $ 1.82万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680472
• 关键词: Development; Direct; Suite; Ventilation; System

Post-war multi-unit residential buildings are typically ventilated using a centralized make-up air unit (MAU), which is intended to positively pressurize the common building corridors and provide ventilation air to suites through door undercuts. Overcladding retrofits for these buildings are gaining popularity as they offer better thermal comfort and energy efficiency by improving building air tightness and insulation levels. However, as a result of these retrofits, the pressurized corridor ventilation strategy is becoming insufficient. The need for alternative ventilation strategies in these buildings is opening up a retrofit market which Nu-Air Ventilation Systems Inc. plans to capitalize on with a new low-profile, high-efficiency, heat/energy recovery ventilator (H/ERV).Through this research partnership, the H/ERV unit design will be optimized with respect to air flow rate requirements for different system layouts, unit dimensions including the height-to-width ratio, thermal efficiency compared to national standards and incentive program requirements, and hardware cost to ensure acceptability by a large market share. To determine the requirements for the design, computer simulations calibrated with field data will be used. These simulations will be based on a case study building in Ontario, representing Nu-Air's target archetype building.This process will leverage rarely collected interzonal air leakage data and air flow data derived from fan-pressurization and tracer gas testing to calibrate the airflow models. This unique approach will ensure a more realistic representation of these building types compared to existing models, to help develop the first H/ERV specifically designed for this retrofit application. This project will allow Nu-Air to bolster their H/ERV product line and give them a competitive advantage in the global marketplace, simultaneously strengthening the Canadian economy.

战后多单元住宅建筑通常使用集中式补风装置（MAU）进行通风，该装置旨在对公共建筑走廊进行正压，并通过门底切向套房提供通风空气。这些建筑物的外覆层改造越来越受欢迎，因为它们通过提高建筑物的气密性和绝缘水平提供更好的热舒适性和能源效率。 然而，由于这些改造，加压走廊通风策略变得不够。在这些建筑中，对替代通风策略的需求正在打开一个改造市场，Nu-Air通风系统公司。计划利用一种新的低轮廓、高效率、热/能量回收通风机（H/ERV）。通过这种研究伙伴关系，H/ERV装置的设计将在不同系统布局的空气流速要求、装置尺寸（包括高宽比）、与国家标准和激励计划要求相比的热效率、和硬件成本，以确保大的市场份额的可接受性。为了确定设计要求，将使用经现场数据校准的计算机模拟。这些模拟将基于安大略的一个案例研究建筑，代表Nu-Air的目标原型建筑。这个过程将利用很少收集的区域间空气泄漏数据和来自风扇增压和示踪气体测试的气流数据来校准气流模型。与现有模型相比，这种独特的方法将确保这些建筑类型的更真实的代表性，以帮助开发专为这种改造应用设计的第一个H/ERV。该项目将使Nu-Air能够加强其H/ERV产品线，并在全球市场上获得竞争优势，同时加强加拿大经济。