Residential

Passive Design House

The building sector is the single largest consumer of energy and producer of greenhouse gas emissions. Achieving carbon neutral design as a standard practice is the goal. 

Case Statement

Three major categories of energy use are lighting, HVAC, and miscellaneous equipment loads.

A house built to passive standards uses less than a quarter of the energy of a traditionally powered home,  Besides lower energy bills, benefits include quiet interiors because of thick, insulated walls, along with fresher, cleaner air, thanks to the filters in energy recovery ventilators. 

Climate is our first consideration when employing passive strategies. We use sun path diagrams to predict the path of the sun and solar radiation and daylighting to passively heat, daylight, and reduce glare with the building design and adjacent structure and landscape.  We use energy modeling early in the design process. Through iterative testing and design adjustment we optimize climate and comfort. 

Daylighting

Passive Design House

Daylighting is the concept of using the natural light of the sun to light the interiors of buildings and reduce the amount of energy required by electric light fixtures.  We study sun path diagrams with software that allows us to study the size and placement of windows to optimize natural light, solar heat gain and mitigate glare using passive solar shading on the exterior.

Heating and Cooling

Passive Design House

Passive buildings maintain a comfortable interior climate without active heating and cooling systems.  The mechanical system is sized to supplement the passive design strategies and operate only as needed.  This is done using, among other things, an air tight building envelope and an energy recovery ventilator, which pushes out stale air while drawing in fresh air, exchanging heat in the process. During the winter, heat from the exhausted air is transferred to the incoming cold air; and in summer, heat and humidity are drawn out of incoming air and transferred to the outgoing stale air.

Energy Balance
Winter vs Summer

Passive House Requirements
Heating Demand

Passive House Requirements
Cooling Demand

Equipment Loads

Passive Design House

The house uses LED light fixtures, induction cooking, and an energy recovery ventilation system at 80% efficiency.  This is estimated to produce an annual energy consumption of 6200 kWh/person yr. or 70 percent less than a home of standard construction.  This can in turn be offset to zero while employing photo voltaic panels on the roof which would occupy a space of about 400 SF.  This house will then be a Net Zero carbon.building that generates 100% of its energy needs on-site.

Source Energy  PHIUS + Source Zero: YES

Air Tightness

Site Energy

Passive Design House

Residential Design of High Performance Buildings

The building sector is the single largest consumer of energy and producer of greenhouse gas emissions. Achieving carbon neutral design as a standard practice is the goal. The building sector is the single largest consumer of energy and producer of greenhouse gas emissions. Achieving carbon neutral design as a standard practice is the goal.

Size

2100 SF

Services

Service

Completion

2020

Cost

Confidential