Naugler住宅一整个冬天的取暖费用为77加元，毫无疑问是新不伦瑞克最节能的住宅。它不仅能长期省钱，而且现在也在省钱，因为每月在公用事业上节省的费用，超过了升级到被动节能屋标准所需的额外抵押贷款成本。This blows a gaping hole in the myth that high performance homes don't pay off.

As the owners, we enjoy the pleasant and spacious feel of the living space. Large windows on both levels not only provide free heat, but increase the spaciousness of the open design and provide natural light to the home for most of the day.

Moreover, the house hasexcellent indoor air quality, and is extremely quiet inside. Quality construction is required in order to meet the high standard for a Passive House including anairtight building structure, thick walls, solid windows and doors. This provides the house with a substantial cozy feeling and comfortable healthy living.

And, just to repeat, the $77 a year heating bill is hardly a heating bill at all for chilly New Brunswick.

Planning:

During the planning period of the house we set out several goals:

  • To build a certifiable Passive House
  • To build the best house possible and use it to demonstrate the benefits of Passive House to Atlantic Canada
  • To heat the house only through post-heating of theHRVfresh air
  • To build the most airtight structure possible
  • To use as many local,2022世界杯预选赛 as possible.

Keeping to these goals helped in making all the hard decisions that come through the planning process.

Using the Passive House Planning Package [PHPP] software to ensure the home would achieve the Passive House Standard, we designed the envelope and chose our building materials carefully to provide a continuous layer of insulation and airtightness around the whole home. We ensured our construction methods were based upon sound building science.

Passive House open-concept design
Garth Hood ofThoughtful Dwellingsin Fredericton helped to create this Passive House open-concept design. The living area is located to capture the view, with sleeping quarters and utilities located on the lower level. The design has the flexibility of accommodating large group gatherings, and with onlyminor renovations can be adaptedto one-level living should that be needed in the future.

Garth, a certified Passive House Consultant, was an important part of the team that made the Naugler House a success. His design and energy-modelling skills aided to blend homeowner needs with thePassive House certification standard.

Passive House Construction:

The high level of insulation begins with the foundation, where 9’’ oftype II and III expanded polystyrene [EPS] panel insulationplaced below the slab was designed to also serve as the formwork. The outside of the concrete walls has 12’’ of type II EPS. The inside face of the foundation has an exposed plastered finish for additional thermal mass.

Skirt insulation prevents soil touching foundation walls from freezing
FPSF Frost Protected Shallow FoundationPerimeter skirt insulation detail

Above grade Passive House wall assembly:

  • Locally-milled eastern white cedar clapboard siding and stained white cedar trim.
  • Strapping for a 1.5’’ rainscreen
  • 16’’ Larsen truss wall systemclad with 1x8 board sheathing and filled withdense pack cellulose insulation由Southern Exposure设计，提供了一种无热桥建筑围护结构，可以快速组装，对分期进行最小的工作。它使绝缘与基础绝缘保持在同一平面上。
  • Interior face of the Larsen truss wall finished with 7/16’’oriented strand board [OSB]taped and primed with theOSB as the air and vapour barrier.
  • 2x4 service cavity wall insulated with blown fiberglass with a binder, then completed with 1/2’’ drywall.

屋顶覆盖层是80%以上回收的复合聚合物为基础的产品，类似于石板瓦，由32“凸起的愈合和30”的松散填充纤维素支撑。接下来是用胶带密封的6毫米聚乙烯屏障，然后1.5“带子创建一个服务腔，然后是1/2”的干墙。

Dense packed cellulose insulation in the walls

Heating and ventilation:

With a PHPP calculated heating load of 7 W/m2, the heating requirements of the Naugler House could easily be met through theHRV ventilation system，省去了安装独立供暖系统的需要和费用。

A PH-certified Zehnder Comfoair 200 was chosen for the HRV, with a 92% heat-recovery rate. In the supply air from the HRV is a Thermolec 2000 Watt resistance heater unit which self-modulates the heat output. This unit provides all the heat needed to maintain the home comfortably at 20°C on a grey winters day.

Before outside air enters the HRV it is preheated or pre-cooled using a simple heat exchanger connected to a 325’ long ground loop of 3/4” pipe buried 5’ deep. Using a circulator pump and electronic control, fluid is pumped through the ground loop and heat exchanger to heat or cool the air entering the HRV.

In the winter when the air temperature outside is -25°C, fresh air is warmed to +2°C before it enters the HRV. This eliminates the need of using an electric heater to pre-warm the air. In the summer when the temperature outside is +33°C, fresh air enters the HRV at +22°C. The system was primarily designed by Garth Hood, using off-the-shelf locally-available materials.

Cost of Building this Passive House:

The 1,940 sq. ft. Naugler House, with a number of custom and durable building features beyond energy-efficiency upgrades, cost $150.00 per sq. ft. to construct. The increase in cost to achieve Passive House energy efficiency over Canadian Building Code energy efficiency was 15%. With similar custom features a code-built house in Fredericton would have cost $130.00 per sq. ft.

Operational costs for this Passive House design:

Naugler住宅每年的供暖成本比同一地点、按照规范建造的相同设计的房屋低2140.82美元。每月节省的178.40美元的取暖费用，超过了支付额外的每月152.00美元的抵押贷款，以建造被动屋的标准。上述计算没有考虑到HRV效率提高所带来的能源节约。

The monthly cost of living in the Naugler House is less than living in a code-built house of the same size and design. This will be more the case when New Brunswick electricity rates increase 2% in October 2013. “Passive House provides energy stability, so there is no reason to not build a passive house,” conclude owners Janis and Win Naugler.

Win Naugler is the owner of the house and father of builder Tim Naugler ofSouthern Exposure Construction Inc.

Project performance:

  • PHPP Specific Space heat demand = 7 kWh / [m2/a]
  • PHPP Primary Energy Demand = 100 kWh / [m2/a]
  • PHPP Heating Load = 7W / m2
  • Airtightness =[email protected][European testing value][email protected][North American value]

[ACH代表每小时换气次数。Pa代表帕斯卡(pascal)，用来测量房屋内外的压差。测试在50帕斯卡的温度下进行，以模拟房屋外部的风压。The R2000 standard for airtightness is[email protected]The Passive House standard is[email protected]]

  • Treated floor area [TFA] = 161 m2
  • Domestic hot water = two-panel flat-plate collector system
  • Measured energy use June 14, 2012- June 12, 2013
  • Energy used for heating = 690.2 kWh or 4.28 kWh / [m2/a]
  • Total home energy consumption = 4,018 kWh or 24.95 kWh / [m2/a]
  • Code-built total home energy consumption = 28,228 kWh or 175.3 kWh / [m2/a]

[Based on a Hot 2000 modelling software file for the same size, same design, same lot and orientation.]

Materials:

  • True-foam Type II and III expanded polystyrene, custom cut sub slab and exterior foundation insulation
  • Blown cellulose insulation for walls and roof
  • Air barrier: OSB with SIGA air barrier tapes
  • Tyvek® water-resistive barrier in rain screen
  • Passive House Windows: Internorm ThermoPassiv sourced through Northwin Windows
  • Thermolec 2kw Thermo Air resistance heater unit
  • Zehnder Comfoair 200 HRV

Naugler House annual heating cost [2012-2013]

  • kWh used 690.2
  • $/Month 6.40
  • Total $ 76.82

Heating cost for the Naugler Passive House compared to code-built house:

  • kWh 19,924
  • $/Month 184.80
  • Total $ 2,217.64

To seemore articles about Passive House certification, design or construction see here, from the EcoHomeGreen Building Guides, onNorth America's favorite green building website - EcoHome.net...

Finished Passive House standard home

This article was written by owners and builders Win and Tim Naugler, and first published by our print magazine partner EcoHouse Canada. All images are courtesy ofBang-on Photography. Visit theNaugler Housewebsite for up to date energy use information.