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1891 adobe House: Hillsboro, New Mexico
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Slide1

1891 adobe House: Hillsboro, New Mexico

murphy HOUSE

Presented By:Dustin Bellows

Passive Cooling Design Strategies Slide2

background

June 2013

June 9th: The Silver Fire erupted in the Black Range of the Gila Mountains of New Mexico. The town of Kingston located in the Black Range was evacuated at 2am on June 9

th. The owners and staff of the Black Range Lodge in Kingston hastily relocated to Hillsboro located 9 miles east of the fire. Temporary residence was taken up in Hillsboro at a historic 1891 adobe house.Slide3

Hillsboro, New Mexico

ESTABLISHED 1877

Hillsboro is located on the southeastern foothills of the Gila National Forest. Aldo Leopold Wilderness lies 15 miles to the west of Hillsboro.

Hillsboro is a small unincorporated community in Sierra County, New Mexico, United States, located in the southwestern part of the state. It was founded in 1877, following the discovery of gold. The community was the county seat of Sierra County from 1884 until 1936 when Hot Springs (now called Truth or Consequences) became the county seat. Between 1893 and 1898, 100,000 troy ounces (3,000 kg) of gold were produced

there.POPULATION of Hillsboro: 200Slide4

Murphy House

BUILT (1891)

The Murphy House is located in middle of town and was build for Sheriff Tom Murphy.

SIZE: Square Feet (

Total: 2668) (Interior:1344 )(Covered Porch:1324 )Currently used as a vacation rental homeMain construction materials: (Walls: adobe) (Roof: wood & corrugated metal) (Foundation: concrete on rubble

trench

,

wood

sill

plates)Slide5

First day at the murphy House

I arrived June 9th

at the Hillsboro house around 3pm. The exterior temperature exceeded 102º F. When I walked into the house, all the windows and doors were shut. The interior temperature of the house was very comfortable (81º F) although NO air conditioner or evaporative cooler was in operation.

I took a nap around 4 pm in the front bedroom on the northwest corner of the house. A ceiling fan in the bedroom was turned on and kept the bedroom at a very comfortable temperature. When I woke up from my nap at 5pm, I went outside where the temperatures hovered around 95 º F.At 9:30 pm that evening, all the windows and doors were manually opened and the fans were turned on inside the house. The exterior temperature at that time was around 81º F-the same as the house’s interior temperature.Slide6

Second day at the murphy House

When I woke up at 6am on the 10th

of June, the exterior temperature was 71º F. The house’s interior temperature closely matched that temperature.At 08:00 am that morning we shut all the doors and windows to the house.

At 10 am that morning, I finished my outdoor yard work around the house. The sun’s heat forced me to retreat indoors. Exterior temperature at that time was around 90º F. Again, the interior temperature of the house remained very comfortable (around 79º F) for the remainder of the day.Slide7

Temperature details

3:00 PM

9:30 PM

Action Taken at 9:30 PM

6:00 AM

08:00 AM

Action Taken at 08:00 AM

Internal Temperature

81º F

81 º F

Opened all windows and doors

71º F

79 º F

Closed all windows and doors

External Temperature

102 º F

81º F

Allows cool external air to penetrate interior space

71 º F

79 º F

Kept external heat from penetrating internal space

Slide8

Hillsboro’s Bio-Climate

Bio-Climate Design: Building

houses with climatic considerations in mindTemperature ranges: summer high (100º F) & winter low (20º F)Elevation (5180 feet elevation / high desert)

Precipitation (arid / 4 inches of rain per year) Low humidity (7º)Prevailing sun (latitude: 32.9208°

North)Wind direction (summer – SW) (winter-NW)Vegetation cover (native vegetation sparse)Shade (abundance of irrigated cottonwood trees in town)

Water Table (well depth less than 100 feet

Arid and semi arid climate zone: major differences in night and day time temperatures and a low precipitation level Slide9

How does the murphy house stay cool in summer?

The Murphy House was built prior to air conditioners and evaporative coolers.

Four passive cooling design strategies were involved in the house’s construction: thermal mass, covered/shaded porches (portals), natural ventilation, and a vaulted / vented attic.

In order for passive cooling design strategies to work, active participation is required!Open windows and doors during the coolest times of the

day; Enhance air exchange with fans. .Close windows and doors when exterior temperature exceeds interior temperature.Slide10
Slide11

Passive

Cooling Design Strategies specific for arid summer Heat

Passive Cooling Design Strategies House is designed to maximize the ability to

cool interior without the use of mechanical units (no air conditioner or evaporative cooler)Summer Heat: exceeds 100º FOptimal design: thermal mass, eaves & covered/shaded porches , natural ventilation, vaulted

& vented atticMaterials: Earthen adobe Temperature specifics (exterior: 102ºF / interior: 80ºF)Slide12

Thermal mass

Definition: The ability of a material or assembly to “soak up”

heat or cool and slowly release it is known as thermal massAlso known as the ‘Specific H

eat Capacity’Natural Materials with high thermal mass: Stone and Earth; ie: adobe, cob, rammed earth, earthen plastersA well

designed thermal mass in a building, if insulated from the exterior, will moderate temperature swings through the diurnal cycle by storing and releasing heat or cool to the interior Thermal Mass can become stubbornly cold in the winter. In summer the reverse is true; mass materials can soak up too much heat, causing discomfort to

occupants Slide13

Thermal Mass

Murphy HouseSlide14

Thermal Mass

Floor Plan OverviewAdobe walls

Murphy House

Exterior Adobe Block Walls (green)

Interior Adobe Block Walls (gold)Slide15

Thermal Mass

interior Adobe walls –entry hall

Murphy HouseSlide16

How thermal mass keeps a house cool in high temperatures

Murphy House

Coolest time of day

Hottest time of daySlide17

Eaves & covered/shaded porches

Murphy HouseSlide18

Eaves & covered/shaded porches

Murphy House

Advantage

Disadvantage

Cooler interior

Sheds snow

NONE

No solar gain-windows

Winter cold

Summer heatSlide19

Eaves & covered/shaded porches

Murphy HouseSlide20

Natural ventilation

Murphy HouseSlide21

Natural ventilation

Murphy HouseSlide22

Natural ventilation

Murphy HouseSlide23

Vaulted and vented attic

Murphy House

During the summer heat, hot air rises within the enclosed attic space of a house

Natural convection will vent hot air through attic vents This hot air must be actively vented out of the attic space at the highest point in the attic A vaulted attic space helps direct the air to the highest point in the atticThe taller the attic space, the more volume of hot air can be vented out

The Hillsboro House has a vented attic at the peak of the roof’s crest. This combined with a tall attic space of 15 feet helps direct hot air within the attic space to outside the enclosed area.Slide24

Vaulted and vented attic

Murphy House

Air FlowSlide25

Vaulted and vented attic

Murphy HouseSlide26

Murphy house

Conclusion

In order for passive cooling design strategies to work,

Active participation is required!

-Open windows and doors during the coolest times of the day.-Close windows and doors when exterior temperature

exceeds

interior

temperature.

-Turn

on fans to circulate interior air

By: liane-varnes
Views: 95
Type: Public

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1891 adobe House: Hillsboro, New Mexico - Description


murphy HOUSE Presented By Dustin Bellows Passive Cooling Design Strategies background June 2013 June 9th The Silver Fire erupted in the Black Range of the Gila Mountains of New Mexico The town of Kingston located in the Black Range was evacuated at 2am on June 9 ID: 437430 Download Presentation

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