nz ph conf homes for living in feedback from residents_r2

Homes for living in: feedback from residents

Mark Siddall, leap

Scepticism about Passivhaus

• Energy

• Comfort

– Over heating

– Humidity– Humidity

Underlying question

“Does the Passivhaus standard deliver in other

cultures and climates?”

Who is Mark Siddall?

1. Design Considerations

Measured versus predicted heat loss coefficients

150.00

200.00

250.00

300.00

He

at

loss

(W

/K)

Predicted

Measured

Passivhaus

Dwellings

1 & 2

3. Case studies - Racecourse

(22 dwellings from the Leeds Met database

0.00

50.00

100.00

He

at

loss

(W

/K)

Courtesy of the Leeds Metropolitan University

3. Case studies - Coheating test

Predicted

(W/K)

Measured

(W/K)

Error compared

to target (W/K)

Dwelling Type

Racecourse Dwelling 1

(Johnston et al, 2012b)

43.4 46.7 +3.3 (+7.6%) End- terrace

Racecourse Dwelling 2

(Johnston et al, 2012b)

36.6 38.1 +1.5 (+4.0%) Mid- terrace

Larch House 57.6 60 +/- 14 2.4 (+4.1%) DetachedLarch House

(Jenkins, 2011)

57.6 60 +/- 14 2.4 (+4.1%) Detached

Lime House

(Jenkins, 2011)

37.2 41 +/- 8 3.8 (+10.2%) Detached

Ford Close

(Warm, 2012)

45.6 50.4 4.8 (+10.5%) Terrace

"In buildings people are the best measuring instruments, they are just harder to calibrate."

- Gary Raw, UK Director of the Centre for Safety, Health and Environment

"In buildings people are the best

measuring instruments, they are

just harder to calibrate.“

- Gary Raw, UK Director of the Centre for Safety, Health and Environmentfor Safety, Health and Environment

“Before it was hard work having family come

to stay. In the summer everything was okay

but a bit depressing in the winter. [I] had to

shut of part of the house because of the cold.

...Now everything is much easier and more ...Now everything is much easier and more

cheery. [I] enjoy using the house the whole

house.”

- Judith Gospel, Steel Farm Passivhaus

5. Feedback: Racecourse

“These bungalows are beautiful, we haven’t had our heating on yet! My husband was always cold before we came here. It’s amazing we were just saying this morning how fortunate we were to be given the chance to live in one of these properties.”


“The passiv bungalows are fantastic, I absolutely love my home and have settled in well here.” “It’s great in the cold weather my new home is cosy and warm and I don’t have to worry about heating costs any more as I rarely use it. I really like living here the bungalows are brilliant!”

4. Occupant surveys

• Occupant surveys are often bespoke

Strength

• Robust project specific information gathered• Robust project specific information gathered

Weakness

• Comparability between buildings/projects is

often impeded

4. BUS Survey: What is it?

• Building Use Studies survey (BUS survey)

• BUS is a statistically validated benchmarking tool

• Developed by sociologist Adrian Leaman, now


• Developed by sociologist Adrian Leaman, now

managed by Arup


• Developed in 1985 as a 16 page questionnaire (non-

domestic)

• Emerged from POE studies of non-domestic buildings


• Emerged from POE studies of non-domestic buildings

(refined in PROBE studies)

•Refined, in 1995, into a two page A4


• 2006, the domestic version

• Consists of a 3 page occupant survey and an analysis tool

•BUS tool was used in a number of domestic projects


•BUS tool was used in a number of domestic projects

funded by the Technology Strategy Board

• Subjective appreciation for the range of criteria using

a numerical scale (1 to 7)

4. BUS Survey: Structure

34 criteria

• Includes aspects of

• Thermal comfort during

summer and winter

• Security

• Space provision

• Location

• Age


summer and winter

• Overheating

• Lighting,

• Cooling and

• Heating

• Age

• Gender

• Space provision

• Appearance

• Tenure

• Lifestyle

4. BUS Survey: Structure

• Security

• Space provision

• Location

• Age

34 criteria

• Includes aspects of

• Thermal comfort during

summer and winter

Not Passivhaus


• Age

• Gender

• Space provision

• Appearance

• Tenure

• Lifestyle

summer and winter

• Overheating

• Lighting,

• Cooling and

• Heating

4. BUS Survey: Methodology

Survey 1: 2013

•25 Passivhaus homes

• 21 responses were received

(response rate of 84%)

Survey 2: 2014

•4 Passivhaus homes

• 4 responses were received

(response rate of 100%)(response rate of 84%)

• Results plotted in graphical

format against the BUS 2013

UK Housing benchmark

(response rate of 100%)

• Results plotted in graphical

format against the BUS 2014

UK Housing benchmark

4. Case study – Racecourse BUS Survey

Age: Number of others >18 yr:

At home:Has living here changed your lifestyle ... ?


4. Case study – Racecourse BUS Survey 1

Age: Number of others >18 yr:

At home:Has living here changed your lifestyle ... ?


4. BUS Survey: BUS Comfort Index

Survey 1: 2013 Survey 2: 2014


4. BUS Survey: BUS Satisfaction Index



4. BUS Survey: BUS Summary Index



4. BUS Survey: Comfort: overall


4. BUS Survey:


Overall Winter Satisfaction - Comfort

4. BUS Survey:


Overall Summer Satisfaction - Comfort

4. BUS Survey: Temperature

hot/cold

stable/varies

hot/cold

stable/varies

In winter: In summer:

overall

stable/varies

overall

stable/varies




Summer Satisfaction - Temperature

Lesson:

Provide secure ventilation for

bungalows



Winter Satisfaction - Temperature

1) tenants are uncertain how they should

control the heating system

2) that the internal gains are greater than

expected, or

3) that both are factors in this feedback

4. BUS Survey: Stability


Winter Temperature Stability

4. BUS Survey: Stability


Summer Temperature Stability

4. BUS Survey: Air Quality

fresh/stuffy

odourless/smelly

still/draughty

In summer:

dry/humid

overall

still/draughty


4. BUS Survey: Air Quality

fresh/stuffy

odourless/smelly

still/draughty

In winter:

dry/humid

overall

still/draughty


4. BUS Survey: Perceived Air Quality

still/draughtyodourless/smell


National situation:BSRIA found that 95% of the systems failed to meet the requirements

contained within Part F of the UK Building Regulations

Racecourse Passivhaus:Leeds Met established that the MVHR was commissioned appropriately.

4. BUS Survey: Noise

Noise: noise from outside

Noise: noise from other people

Measurements confirmed

the range of 21 to 23 dB(A)

Noise: overall


Noise: overall

4. BUS Survey: Control

Control over lighting

Control over heating

Control over cooling

Control over noise

Control over ventilation


Control over noise

4. BUS Survey:

Health (perceived)

Layout

Health

Space

Storage


Design

4. BUS Survey: Lighting

Lighting: artificial light

Lighting: natural light

Lighting: artificial light

Lighting: natural light

Lighting: overall


Lighting: overall

4. BUS Survey: Utilities

Utilities costs for heating

Utilities costs for electricity Utilities costs for electricity

Utilities costs for heating


6.0 Lessons Learned

BUS Survey

• High levels of comfort and satisfaction

• Occupants report an average/ good level of control

• Occupants report an low heating bills and low/average

electric billselectric bills

• Some over heating risk despite perceived control

Thanks to the Technology Strategy Board and Gentoo

…and thank you for your time.

Photo MJSMark Siddall:

E: [email protected]

t: 07795 031 700

nz ph conf homes for living in feedback from residents_r2

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