Halifax County, NS

Black Duck Run

Keywords: greenhouse, passive, air space heating

Year Built:

1986

Size:

1300 sq ft, 1 baths, 1 bedrooms.

Energy Percents:

50% passive, % active, 50% external

External Sources:

Electricity: 14000 KWh,

Cost & Value:

Cost: 45-50k, Assessed value: 75k

Purpose

Dwelling with passive solar heating., Greenhouse space for horticulture.

Economics & Performance

On an annual basis, approx. 50% of heat is solar derived., Example of two winter days, one sunny, one cloudy:, Day Period Source KW, 16 Jan 1989 0600-2400 Solar 48.14, 17 Jan 1989 0600-1800 NSPI 28.82, The sunny provided 100% of heating requirement in addition to 60+ % excess.

Lot Characteristics

SSW facing slope. Eastern boundary Black Duck Run Estuary, western boundary bedrock ridge elev. 40+ m.

Description

Passive solar gain via 26 m2 south-facing vertical glazing., Heat storage: insulated concrete slab with air ducts 55 m2 x 13 cm, Auxiliary heat: 15 KW eclectic forced air., Drilled well, 15 m contour septic system.

Comments

House originally had sloped (60 degree) glazing to maximize winter gain. Current vertical replacement glazing has approx 50% more area and yields essentially the same net solar gain as the original design., House is very pleasant environment in which to live in addition to being energy efficient.

Viewing

Call owner. 902-852-3997

What would we do different?

Build larger house, Install liquid exchange system in heat storage slab.,