The Taft School Faculty Home

Ca s o d e e s tu d i o : Th e Ta ft S ch o o l Fa cu l ty Ho m e
S i ti o we b : h ttp ://www.co n s tr u cti o n 2 1 .o r g /e s p a n a /
The Taft School Faculty Home
PUBLICADO POR BUTTERFIELD | 10 MAYO 16
Tipo de pro yecto : Nueva co nstrucció n
Tipo de edificio : Casa aislada o ado sada,
Año de la co nstrucció n : 20 14
Zo na climática : [Dfb] Humid Co ntinental
Mild Summer, Wet All Year
Superficie útil : 36 1 m 2 Superficie útil
Co ste de la co nstrucció n : 59 7 554 €
Número de unidades funcio nales : 1
Viviendas
Co ste/m2 : 1 6 55 €/m 2
Co ste/Viviendas : 59 7 554 €/Viviendas
, 0 6 79 5 Waterto wn, USA
// Descripción
This ho me is an excellent example o f design and co nstructio n fo r temperate climates and energy co nservatio n. The Taft
Scho o l faculty ho me serves as a high perfo rmance residence and learning lab fo r students. In US climate zo ne 5, it achieved a
HERS 33 excluding PV and with the 13.1 kW the HERS index is -14. Lo cated o n a quiet street adjacent to campus the existing,
histo ric ho me was deco nstructed and salvageable materials were do nated o r reused. Challenged to find high efficiency
windo ws that were histo ric co mmissio n acceptable, the team installed Klearwall awnings o r casements o ver fixed glass (to
mimic do uble hungs) with simulated divided lites (u-values as lo w as 0 .13). A high so lar heat gain co efficient (0 .58 ) facilitates
the passive so lar gain fo r winter mo nths, while well designed o verhangs and pergo la shade summer sun. Do uble stud walls
have 2¼” clo sed cell fo am plus 8 ½” dense pack cellulo se fo r a R-49 cavity. The exterio r sheathing is R-6 .6 Zip Wall System
with taped seams to create the co ntinuo us air barrier. Inside the so lid co ncrete fo undatio n is 3” clo sed cell fo am behind 2x4
stud walls and R-32 cellulo se in the cavity. Prefabricated TJI jo ists frame the attic flo o r, an insulated “ro o m” ho uses the heat
reco very ventilato r and ductwo rk, and blo wn in cellulo se blankets it all in R-8 6 . The ho use tested 0 .6 ACH50 pro ving the
effectiveness o f its air-tight envelo pe and attentio n to air sealing. Heating and co o ling is pro vided by efficient air so urce heat
pumps (9 .2 HSPF, 16 .5 SEER) and delivered by sho rt duct runs which tested extremely tight. A heat pump water heater
pro vides do mestic ho t water and an o n-demand switch, with an o ccupancy senso r at each bath, ensures ho t water is delivered
fast and efficiently. Lo w flo w fixtures are WaterSense certified, appliances are Energy Star labeled, and all LED lighting. A
Zehnder No vus 30 0 (9 3.3% efficient) HRV supplies 112 cfm o f co ntinuo us fresh air ventilatio n; using o nly 32 watts o f po wer
and runs quietly. The ho meo wners co ntro l the mechanical ventilatio n thro ugh the intuitive wall-mo unted co ntro l pad to shut o ff
o r increase the ventilatio n. Chemicals and co ntaminants were reduced by using lo w VOC and GreenGuard certified sealants,
adhesives, primers, and paints. A walk-o ff matt at the side entry and hardwo o d flo o rs help co ntro l dirt and dust. Sto rm water
runo ff fro m the ro o f, patio , and driveway is managed by the rain garden and native landscaping is lo w maintenance. Taft
Scho o l Directo r o f Enviro nmental Stewardship, Carly Bo rken has used the design and co nstructio n pro cess as a teaching to o l
fo r her science classes. With access to the ho me mo nito ring system they can virtually access the ho mes co nsumptio n. After
12 mo nths o f utility bills the ho me has pro duced 9 ,8 6 8 kW mo re than it’s used.
Fiabilidad de lo s dat o s :
// Actores
Certificado po r tercera parte
Consultoría ambiental
No mbre : The Taft Scho o l
Gil Tho rnfeldt, GilTho rnfeldt@taftscho o l.o rg
Sitio web : http://www.Taftscho o l.o rg
Me t o do de co nt rat o :
Co ntratista General
Filo so f ía am bie nt al de l pro m o t o r : Taft is educating to mo rro w's leaders, and we kno w that as an educatio nal institutio n
we are ro le mo dels fo r so cial change. Our sustainability challenges are similar to what many o rganizatio ns face: impro ving
energy efficiency thro ugh the physical plant, but also in the habits and minds o f o ur co mmunity. Thro ugh a variety o f initiatives
by faculty and staff and thro ugh student interest and activism, the Big Red is making serio us strides in go ing green.
Here are so me o f the ways Taft is wo rking to reduce its impact o n the enviro nment: https://www.taftscho o l.o rg/no n/enviro .aspx
De scripció n de la arquit e ct ura : Mo re than a century has passed since Mr. Taft fo unded o ur scho o l. While the wo rld and
the scho o l have changed dramatically, his fundamental values endure: wo rk hard, witho ut regard fo r public acclaim; develo p all
yo ur talents: academic, artistic, and athletic; and mo st impo rtantly, give o f yo urself to o thers.
Ho race Taft cho se o ur scho o l mo tto : No n ut sibi ministretur sed ut ministret—No t to be served but to serve. To day, Taft’s 124
faculty members educate 58 9 bo ys and girls fro m 33 states and 47 co untries. Our beautiful 226 -acre campus features
facilities that rival tho se o f many small co lleges, including a library with 56 ,0 0 0 vo lumes, a 45,0 0 0 square fo o t science and
mathematics building, student do rms, and faculty ho using in the New England aesthetic o f brick buildings with slate ro o fs.
Si t uvie ran que hace rlo o t ra ve z : The attic air sealing and insulatio n wo uld have been implemented differently. Spray
fo am was avo ided so the thermal barrier at the attic flo o r made duct runs and air sealing mo re difficult.
Opinió n de lo s usuario s de l e dif icio :
https://www.yo utube.co m/watch?v=YGlG2LmvEl4
// Energía
Consumo de energía
Ene rgía prim aria ne ce saria :
44,30 kWh PE/m 2 /year
Ene rgía prim aria ne ce saria po r un e dif icio e st ándar : 76 ,0 0 kWh PE/m 2 /year
Mé t o do de cálculo : Otro s
Co st e de la e f icie ncia e ne rgé t ica de l e dif icio : 0 ,0 0 kWh PE / €
Ene rgía f inal : -17,20 kWh FE/m 2 /year
De sglo se de l co nsum o de e ne rgía : Abo ve values are in MMBtu/yr
Heating 5.9 MMBtu/yr,
Co o ling 4.9 MMBtu/yr,
Water Heating 3.5 MMBtu/yr,
Lights & Appliances 27.1 MMBtu/yr,
Pho to vo ltaics -58 .6 MMBtu/yr
Comportamiento de la envolvente
Valo r de la U : 0 ,10 W.m -2 .K-1
Más inf o rm ació n : Abo ve Grade Walls U=0 .0 17, Windo ws U=0 .175, Attic U= 0 .0 11
Co e f icie nt e de co m pacidad de l e dif icio : 0 ,12
I4 (I4) m 3 /H.m 2 n50 (Vo l/H) Q4
Valo r de la pe rm e abilidad al aire : 0 ,44
Opinió n de lo s usuario s de l sist e m a de co nt ro l : Site Sage Mo nito ring System
Pro vides up to 24 electrical circuits to be mo nito red with web interface; 12 Lutro n Radio Ra2 lighting circuits with 2 hybrid
keypads; iPad Mini, and in wall do cking statio n. Will act as a central co ntro l and mo nito ring lo catio n; Pro vides temperature
and humidly mo nito ring o f HVAC System.
Zehnder No vus 30 0 is o ver ridden at central co ntro l pad.
Co nsum o re al (e ne rgía f inal) / m 2:
0 (20 15)
// Renovables y sistemas
Sistemas
Sist e m a de cale f acció n :
Bo mba de calo r
Sist e m a de agua calie nt e :
Bo mba de calo r
Sist e m a de re f rige ració n :
Sistema de Vo lumen de Refrigeració n Variable (VRV)
Sist e m a de ve nt ilació n :
Flujo de do ble intercambiado r de calo r
Sist e m as re no vable s :
Energía so lar fo to vo ltaica
Pro ducció n de e ne rgía re no vable :
142,0 0 %
Sist e m as de ge st ió n de l e dif icio : Since this is a single family residence there is o nly remo te access and mo nito ring
co ntro ls thro ugh Site Sage and Zehnder
// Comportamiento ambiental
Emisiones GEI
GEI e n la e t apa de uso : -1,20 KgCO 2 /m 2 /year
Me t o do lo gía usada : REM/Rate Mo deling So ftware CO2 -1.2 to ns/yr, SO2 -1.7 lbs/yr, NOx -1.6 lbs/yr
Agua, salud y confort
Calidad de l aire int e rio r :
Indo o r airPlus Certified
// Productos
Klear Wall Windows
Pro duct o r: Klearwall Industries
Co nt act o : 20 3-6 8 9 -540 4
Página we b: http://klearwall.co m/newsite/
Cat e go ría de l pro duct o : Acabado s / Carpintería exterio r - Puertas y Ventanas
De scripció n:
All o ur pro ducts are engineered with precisio n and crafted with care to ensure o ur custo mers
get a superio r quality pro duct. Bo th o f the do mestic and co mmercial pro duct ranges are suitable
fo r passive ho use co nstructio n and have been certified by the Passivhaus Institut in Darmstadt,
Germany
Co m e nt ario s:
Co mbining fixed windo ws with awnings o r casements enabled the team to mimic a do uble hung and get appro val by the lo cal
histo ric co mmissio n.
http://www.co nstructio n21.o rg/espana/data/so urces/user (...)
ZIPS Insulated Sheathing
Pro duct o r: Huber Engineered Wo o ds
Co nt act o : andrew.co [email protected] m
Página we b: http://www.huberwo o d.co m/co ntact-us
Cat e go ría de l pro duct o : Obras estructurales / Estructura - Albañilería - Fachada
De scripció n:
Fo r installatio n co nvenience and exceptio nal, lo ng-term perfo rmance, the all-in-o ne ZIP
System® R-Sheathing panel pro vides a new appro ach to sealing and insulating the building
envelo pe. One panel delivers thermal, air and mo isture resistance, while pro viding excellent
strength and durability.
Co m e nt ario s:
Do uble s2x4 studs with 3 1/2" gap already reduced thermal bridging fo r abo ve grade walls but ZIPS insulated sheathing was
cho sen fo r added thermal break plus the lo ng term perfo rmance o f the sheathing.
// Costes
Co ste de la co nstrucció n : 59 7 554 €
Costes de construcción y explotación
Co st e de l sist e m a de e ne rgía re no vable :
Co st e t o t al de l e dif icio : 59 7 554,0 0 €
Ayuda f inancie ra : 7 9 13,0 0 €
50 116 ,0 0 €
Co st e de las f act uras de e ne rgía : 20 3,0 0 €
Co st e re al de la e ne rgía/m 2 : 0 ,56 € / m 2
Co st e re al de la e ne rgía/Vivie ndas : 20 3,0 0 €/Viviendas
// Entorno urbano
Ent o rno urbano :
to wn.
Lo cated o n an existing educatio nal pro perty clo se to co mmunity reso urces bo th o n campus and in
Supe rf icie de parce la :
1440 m 2
Supe rf icie co nst ruida :
10 0 %
// Calidad ambiental del edificio
Calidad am bie nt al de l e dif icio :
Salud, calidad del aire interio r
Eficiencia energética, la gestió n de la energía
Energía reno vable
Gestió n y mantenimiento de lo s edificio s
Pro ceso s de co nstrucció n
Pro ducto s y materiales de la co nstrucció n
// Concurso
This ho me is an excellent example o f design and co nstructio n fo r temperate climates and energy co nservatio n. The Taft
Scho o l faculty ho me serves as a high perfo rmance residence and learning lab fo r students. In US climate zo ne 5, it achieved a
HERS 33 excluding PV and with the 13.1 kW the HERS index is -14.