Presentation for Presentation for

South Eastern Regional College and Carbon Zero NISouth Eastern Regional College and Carbon Zero NIIn association with Action RenewablesIn association with Action Renewables

Belfast Belfast –– 55thth February 2010February 2010______________________________________________________________________

TowardsTowards Sustainable Passive House Solutions Sustainable Passive House Solutions for for

Existing HousingExisting Housing

Bill Quigley / Mark ForkinBill Quigley / Mark ForkinNuTech Renewables LtdNuTech Renewables Ltd

Using NuTechUsing NuTechUsing NuTechUsing NuTechUsing NuTechUsing NuTechUsing NuTechUsing NuTech’’’’’’’’s Passive Solar House Techniques to s Passive Solar House Techniques to s Passive Solar House Techniques to s Passive Solar House Techniques to s Passive Solar House Techniques to s Passive Solar House Techniques to s Passive Solar House Techniques to s Passive Solar House Techniques to

achieve a sustainable Low Energy, Low CO2 Houseachieve a sustainable Low Energy, Low CO2 Houseachieve a sustainable Low Energy, Low CO2 Houseachieve a sustainable Low Energy, Low CO2 Houseachieve a sustainable Low Energy, Low CO2 Houseachieve a sustainable Low Energy, Low CO2 Houseachieve a sustainable Low Energy, Low CO2 Houseachieve a sustainable Low Energy, Low CO2 House

Aim Aim Aim Aim Aim Aim Aim Aim –––––––– ‘‘‘‘‘‘‘‘Better than the PassivHAus and at a lower CostBetter than the PassivHAus and at a lower CostBetter than the PassivHAus and at a lower CostBetter than the PassivHAus and at a lower CostBetter than the PassivHAus and at a lower CostBetter than the PassivHAus and at a lower CostBetter than the PassivHAus and at a lower CostBetter than the PassivHAus and at a lower Cost’’’’’’’’!!!!!!!!

Total Primary Energy Requirement by SectorTotal Primary Energy Requirement by Sector

Residential is 25% of totalResidential is 25% of total

Commercial & Public Services is 18%Commercial & Public Services is 18%

SubSub --Total is 43%Total is 43%

SubSub --TotalTotal

= 43%= 43%

Passive Solar HousingPassive Solar HousingIn the 1983 In the 1983 –– 1988 The Knocklyon Project1988 The Knocklyon ProjectDesigner: Bill Quigley / Mark ForkinDesigner: Bill Quigley / Mark ForkinArchitect: Turlough OArchitect: Turlough O ’’ Donnell Donnell

Solar Roof Solar Roof Solar Roof Solar Roof Solar Roof Solar Roof Solar Roof Solar Roof –––––––– 40m2 of Air Solar Collector40m2 of Air Solar Collector40m2 of Air Solar Collector40m2 of Air Solar Collector40m2 of Air Solar Collector40m2 of Air Solar Collector40m2 of Air Solar Collector40m2 of Air Solar Collector

All fabric reasonably well insulated for the All fabric reasonably well insulated for the All fabric reasonably well insulated for the All fabric reasonably well insulated for the All fabric reasonably well insulated for the All fabric reasonably well insulated for the All fabric reasonably well insulated for the All fabric reasonably well insulated for the timetimetimetimetimetimetimetime

Wall = 0.35; Floor 0.25Wall = 0.35; Floor 0.25Wall = 0.35; Floor 0.25Wall = 0.35; Floor 0.25Wall = 0.35; Floor 0.25Wall = 0.35; Floor 0.25Wall = 0.35; Floor 0.25Wall = 0.35; Floor 0.25

Roof = 0.20; Windows = 3.0 W.m2.KRoof = 0.20; Windows = 3.0 W.m2.KRoof = 0.20; Windows = 3.0 W.m2.KRoof = 0.20; Windows = 3.0 W.m2.KRoof = 0.20; Windows = 3.0 W.m2.KRoof = 0.20; Windows = 3.0 W.m2.KRoof = 0.20; Windows = 3.0 W.m2.KRoof = 0.20; Windows = 3.0 W.m2.K

Tested numbers of different technologies Tested numbers of different technologies Tested numbers of different technologies Tested numbers of different technologies Tested numbers of different technologies Tested numbers of different technologies Tested numbers of different technologies Tested numbers of different technologies –––––––– Rock Bed Heat Stores, Phase Change Rock Bed Heat Stores, Phase Change Rock Bed Heat Stores, Phase Change Rock Bed Heat Stores, Phase Change Rock Bed Heat Stores, Phase Change Rock Bed Heat Stores, Phase Change Rock Bed Heat Stores, Phase Change Rock Bed Heat Stores, Phase Change Heat Stores, Heat Pumps, etc.Heat Stores, Heat Pumps, etc.Heat Stores, Heat Pumps, etc.Heat Stores, Heat Pumps, etc.Heat Stores, Heat Pumps, etc.Heat Stores, Heat Pumps, etc.Heat Stores, Heat Pumps, etc.Heat Stores, Heat Pumps, etc.

Space heating Space heating Space heating Space heating Space heating Space heating Space heating Space heating –––––––– 40 kWh/m2.year and 40 kWh/m2.year and 40 kWh/m2.year and 40 kWh/m2.year and 40 kWh/m2.year and 40 kWh/m2.year and 40 kWh/m2.year and 40 kWh/m2.year and reduced to 20 kWh/m2.year with best reduced to 20 kWh/m2.year with best reduced to 20 kWh/m2.year with best reduced to 20 kWh/m2.year with best reduced to 20 kWh/m2.year with best reduced to 20 kWh/m2.year with best reduced to 20 kWh/m2.year with best reduced to 20 kWh/m2.year with best technologiestechnologiestechnologiestechnologiestechnologiestechnologiestechnologiestechnologies

Passive HousesPassive HousesPassive HousesPassive HousesPassive HousesPassive HousesPassive HousesPassive Houses

Very Low Energy DemandVery Low Energy DemandVery Low Energy DemandVery Low Energy DemandVery Low Energy DemandVery Low Energy DemandVery Low Energy DemandVery Low Energy Demand

RequirementsRequirementsRequirementsRequirementsRequirementsRequirementsRequirementsRequirements

(a)(a)(a)(a)(a)(a)(a)(a) less than 15 kWh/m2.Year for Space heating less than 15 kWh/m2.Year for Space heating less than 15 kWh/m2.Year for Space heating less than 15 kWh/m2.Year for Space heating less than 15 kWh/m2.Year for Space heating less than 15 kWh/m2.Year for Space heating less than 15 kWh/m2.Year for Space heating less than 15 kWh/m2.Year for Space heating –––––––– Delivered Delivered Delivered Delivered Delivered Delivered Delivered Delivered Energy Energy Energy Energy Energy Energy Energy Energy (NB: Different to SAP or DEAP)(NB: Different to SAP or DEAP)(NB: Different to SAP or DEAP)(NB: Different to SAP or DEAP)(NB: Different to SAP or DEAP)(NB: Different to SAP or DEAP)(NB: Different to SAP or DEAP)(NB: Different to SAP or DEAP)

(b)(b)(b)(b)(b)(b)(b)(b) Less than 10W/m2 heating load Less than 10W/m2 heating load Less than 10W/m2 heating load Less than 10W/m2 heating load Less than 10W/m2 heating load Less than 10W/m2 heating load Less than 10W/m2 heating load Less than 10W/m2 heating load (Different to SAP/DEAP)(Different to SAP/DEAP)(Different to SAP/DEAP)(Different to SAP/DEAP)(Different to SAP/DEAP)(Different to SAP/DEAP)(Different to SAP/DEAP)(Different to SAP/DEAP)

(c)(c)(c)(c)(c)(c)(c)(c) Air Infiltration 0.6 ACH at 50Pa Air Infiltration 0.6 ACH at 50Pa Air Infiltration 0.6 ACH at 50Pa Air Infiltration 0.6 ACH at 50Pa Air Infiltration 0.6 ACH at 50Pa Air Infiltration 0.6 ACH at 50Pa Air Infiltration 0.6 ACH at 50Pa Air Infiltration 0.6 ACH at 50Pa

= 0.03 ACH at Normal Pressure= 0.03 ACH at Normal Pressure= 0.03 ACH at Normal Pressure= 0.03 ACH at Normal Pressure= 0.03 ACH at Normal Pressure= 0.03 ACH at Normal Pressure= 0.03 ACH at Normal Pressure= 0.03 ACH at Normal Pressure

(d) Thermal Bridging (d) Thermal Bridging (d) Thermal Bridging (d) Thermal Bridging (d) Thermal Bridging (d) Thermal Bridging (d) Thermal Bridging (d) Thermal Bridging –––––––– minimised minimised minimised minimised minimised minimised minimised minimised -------- less than 0.04 W/m2.Kless than 0.04 W/m2.Kless than 0.04 W/m2.Kless than 0.04 W/m2.Kless than 0.04 W/m2.Kless than 0.04 W/m2.Kless than 0.04 W/m2.Kless than 0.04 W/m2.K

Energy Use for space heating, ventilation and hot water in Energy Use for space heating, ventilation and hot water in Housing Housing

In a typical house built to satisfy the requirements of the BuilIn a typical house built to satisfy the requirements of the Building ding Regulations, it is worthwhile looking at how energy is used and Regulations, it is worthwhile looking at how energy is used and

heat is lost in housing. Simply put:heat is lost in housing. Simply put:

•• 1/3 is heat lost through the fabric of the building1/3 is heat lost through the fabric of the building

•• 1/3 is heat lost caused by air infiltration and necessary air fo1/3 is heat lost caused by air infiltration and necessary air fo r r ventilationventilation

•• 1/3 goes to energy to provide domestic hot water1/3 goes to energy to provide domestic hot water

Extra insulation can only save a certain amount of energyExtra insulation can only save a certain amount of energy

Focus on air infiltration and the domestic hot water loadFocus on air infiltration and the domestic hot water load

Passive HousesPassive Houses

PHPP PHPP –– 2007 Subtle Differences!2007 Subtle Differences!

1.1. Measurements are to the outside of the insulationMeasurements are to the outside of the insulation

2.2. The Energy required for Space Heating is 15 kWh/m2.Year and is DThe Energy required for Space Heating is 15 kWh/m2.Year and is DELIVERED ELIVERED energy NOT PRIMARY energy as in SAP or DEAPenergy NOT PRIMARY energy as in SAP or DEAP

3.3. The maximum allowable Heat Load is 10 W/m2 The maximum allowable Heat Load is 10 W/m2 –– this includes a calculation this includes a calculation regarding the average energy gains from solar radiation AND fromregarding the average energy gains from solar radiation AND from Internal GainsInternal Gains

4.4. All fabric elements must have a UAll fabric elements must have a U--Value of less than 0.15 W/m2.KValue of less than 0.15 W/m2.K

5.5. All windows must have a UAll windows must have a U--Value of less than 0.8 W/m2.KValue of less than 0.8 W/m2.K

6.6. The efficiency of the HRV must be greater than 75% BUT BEWARE itThe efficiency of the HRV must be greater than 75% BUT BEWARE it is is calculated in a different way!calculated in a different way!

7.7. The airtightness of the building must be less than 0.6 ACH at 50The airtightness of the building must be less than 0.6 ACH at 50Pascal. Building Pascal. Building Regulations here define it in terms of m3/hour per m2 of fabric Regulations here define it in terms of m3/hour per m2 of fabric –– many cases they many cases they are the same BUT for elongated bungalows may be differentare the same BUT for elongated bungalows may be different

8.8. The level of fresh air ventilation is very low The level of fresh air ventilation is very low –– in many cases less than allowable in in many cases less than allowable in Part F 2006 (England and Wales)Part F 2006 (England and Wales)

PHPP PHPP –– 2007 2007

If you adhere rigidly to this standard you will have a very goodIf you adhere rigidly to this standard you will have a very goodhouse house ––provided that everything works!provided that everything works!

It also may cost a lot of money!It also may cost a lot of money!

Certification by the Passive House Institute relies on them haviCertification by the Passive House Institute relies on them having certified ng certified all equipment used. all equipment used.

Equipment certified by the PHI may not carry Appendix Q CertificEquipment certified by the PHI may not carry Appendix Q Certific ationation

Passive HousesPassive Houses

Consider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returns

Effective Insulation ?Effective Insulation ?Cavity WallCavity Wall

Thermal LoopingThermal Looping

Outside0 C

Inside20 C

Calculated UCalculated U--Value = 0.45Value = 0.45

Actual UActual U--Value = 0.9 ?Value = 0.9 ?

Effective Insulation ?Effective Insulation ?

External Insulation on an existing cavity wallExternal Insulation on an existing cavity wall

Outside0 C

Inside20 C

Calculated UCalculated U--Value Full Fill + External insulation = 0.15 W/m2.KValue Full Fill + External insulation = 0.15 W/m2.K

Actual UActual U--Value = ? ?Value = ? ?

Importance of Build Quality Importance of Build Quality Importance of Build Quality Importance of Build Quality Importance of Build Quality Importance of Build Quality Importance of Build Quality Importance of Build Quality –––––––– Example 200m2 HouseExample 200m2 HouseExample 200m2 HouseExample 200m2 HouseExample 200m2 HouseExample 200m2 HouseExample 200m2 HouseExample 200m2 House

By doubling the Energy Demand in the By doubling the Energy Demand in the By doubling the Energy Demand in the By doubling the Energy Demand in the By doubling the Energy Demand in the By doubling the Energy Demand in the By doubling the Energy Demand in the By doubling the Energy Demand in the ‘‘‘‘‘‘‘‘as builtas builtas builtas builtas builtas builtas builtas built’’’’’’’’ house house house house house house house house

We can Triple the actual running costs (We can Triple the actual running costs (We can Triple the actual running costs (We can Triple the actual running costs (We can Triple the actual running costs (We can Triple the actual running costs (We can Triple the actual running costs (We can Triple the actual running costs (££££££££))))))))

Intelligent Renewable Energy Systems (IRES)

••In very large Houses we do consider the use of In very large Houses we do consider the use of In very large Houses we do consider the use of In very large Houses we do consider the use of In very large Houses we do consider the use of In very large Houses we do consider the use of In very large Houses we do consider the use of In very large Houses we do consider the use of

underfloor heating, radiators, etc.underfloor heating, radiators, etc.underfloor heating, radiators, etc.underfloor heating, radiators, etc.underfloor heating, radiators, etc.underfloor heating, radiators, etc.underfloor heating, radiators, etc.underfloor heating, radiators, etc.

••Double height rooms do need careful examinationDouble height rooms do need careful examinationDouble height rooms do need careful examinationDouble height rooms do need careful examinationDouble height rooms do need careful examinationDouble height rooms do need careful examinationDouble height rooms do need careful examinationDouble height rooms do need careful examination

••Watch out for summer overheatingWatch out for summer overheatingWatch out for summer overheatingWatch out for summer overheatingWatch out for summer overheatingWatch out for summer overheatingWatch out for summer overheatingWatch out for summer overheating

Energy from the solar Energy from the solar Energy from the solar Energy from the solar Energy from the solar Energy from the solar Energy from the solar Energy from the solar

collectors is fed into collectors is fed into collectors is fed into collectors is fed into collectors is fed into collectors is fed into collectors is fed into collectors is fed into

the HRV system to the HRV system to the HRV system to the HRV system to the HRV system to the HRV system to the HRV system to the HRV system to

heat the house.heat the house.heat the house.heat the house.heat the house.heat the house.heat the house.heat the house.

This can now be This can now be This can now be This can now be This can now be This can now be This can now be This can now be

taken into the DEAP taken into the DEAP taken into the DEAP taken into the DEAP taken into the DEAP taken into the DEAP taken into the DEAP taken into the DEAP

Calculation procedure Calculation procedure Calculation procedure Calculation procedure Calculation procedure Calculation procedure Calculation procedure Calculation procedure

to improve the BER to improve the BER to improve the BER to improve the BER to improve the BER to improve the BER to improve the BER to improve the BER

Rating for the houseRating for the houseRating for the houseRating for the houseRating for the houseRating for the houseRating for the houseRating for the house

Evacuated Tube Collectors with NuTechEvacuated Tube Collectors with NuTechEvacuated Tube Collectors with NuTechEvacuated Tube Collectors with NuTechEvacuated Tube Collectors with NuTechEvacuated Tube Collectors with NuTechEvacuated Tube Collectors with NuTechEvacuated Tube Collectors with NuTech’’’’’’’’s IRES s IRES s IRES s IRES s IRES s IRES s IRES s IRES

Controller Controller Controller Controller Controller Controller Controller Controller –––––––– The NuTech Passive Solar House systemThe NuTech Passive Solar House systemThe NuTech Passive Solar House systemThe NuTech Passive Solar House systemThe NuTech Passive Solar House systemThe NuTech Passive Solar House systemThe NuTech Passive Solar House systemThe NuTech Passive Solar House system

Boiler can be Oil, Gas, Wood Pellet or an Air to Water Heat Pump

Passive HousesPassive Houses

Consider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returnsConsider the effect of Diminishing returns

Passive Houses Passive Houses –– Upgrading existing random rubble wallUpgrading existing random rubble wall

Passive Houses Passive Houses –– Upgrading of existing partial fill cavity wallUpgrading of existing partial fill cavity wall

Passive Houses Passive Houses –– Upgrading of existing timber frame wallsUpgrading of existing timber frame walls

Passive Houses Passive Houses –– Upgrading of existing ground floorsUpgrading of existing ground floors

Passive Houses Passive Houses –– Upgrading Roof InsulationUpgrading Roof Insulation

External InsulationExternal Insulation

Air Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTech’’’’’’’’ssssssss

Minneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower Door

Air Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTechAir Leakage Testing using NuTech’’’’’’’’ssssssss

Minneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower DoorMinneapolis Blower Door

These are the test results for one of the houses at Oldtown, Co Dublin.

These houses are being built by Commins Bros.

This house has an air leakage rate of 1.14 Air Changes per Hour at 50 Pa. This equates to an air leakage rate of 0.057 ACH at normal atmospheric pressure (divide the 50 Pa rate by 20 is the accepted rule)

We have got these houses down to 0.60 ACH at 50 Pa i.e. This is 0.03 ACH at Normal Pressure

These houses are the most airtight houses that NuTech has ever tested.

Actuality Vs Computer Simulation Actuality Vs Computer Simulation Actuality Vs Computer Simulation Actuality Vs Computer Simulation Actuality Vs Computer Simulation Actuality Vs Computer Simulation Actuality Vs Computer Simulation Actuality Vs Computer Simulation -------- TemperatureTemperatureTemperatureTemperatureTemperatureTemperatureTemperatureTemperature

10

11

12

13

14

15

16

17

18

19

20

21

2200

:00

01:2

0

02:4

0

04:0

0

05:2

0

06:4

0

08:0

0

09:2

0

10:4

0

12:0

0

13:2

0

14:4

0

16:0

0

17:2

0

18:4

0

20:0

0

21:2

0

22:4

0

Tem

pera

ture

(o C

)

TH1

TCONC

TLW

Timber Frame House - insulated, HRV, Air Solar Coll ectors

Air Infiltration and the necessary air for VentilationAir Infiltration and the necessary air for VentilationAir Infiltration and the necessary air for VentilationAir Infiltration and the necessary air for VentilationAir Infiltration and the necessary air for VentilationAir Infiltration and the necessary air for VentilationAir Infiltration and the necessary air for VentilationAir Infiltration and the necessary air for Ventilation

Use a Heat Recovery Ventilation SystemUse a Heat Recovery Ventilation SystemUse a Heat Recovery Ventilation SystemUse a Heat Recovery Ventilation SystemUse a Heat Recovery Ventilation SystemUse a Heat Recovery Ventilation SystemUse a Heat Recovery Ventilation SystemUse a Heat Recovery Ventilation System

If air being removed from If air being removed from If air being removed from If air being removed from If air being removed from If air being removed from If air being removed from If air being removed from ‘‘‘‘‘‘‘‘wetwetwetwetwetwetwetwet’’’’’’’’ rooms is at 20C rooms is at 20C rooms is at 20C rooms is at 20C rooms is at 20C rooms is at 20C rooms is at 20C rooms is at 20C and incoming fresh air is and incoming fresh air is and incoming fresh air is and incoming fresh air is and incoming fresh air is and incoming fresh air is and incoming fresh air is and incoming fresh air is at 5C then the fresh air at 5C then the fresh air at 5C then the fresh air at 5C then the fresh air at 5C then the fresh air at 5C then the fresh air at 5C then the fresh air at 5C then the fresh air going to the house will going to the house will going to the house will going to the house will going to the house will going to the house will going to the house will going to the house will be at 18C after the heat be at 18C after the heat be at 18C after the heat be at 18C after the heat be at 18C after the heat be at 18C after the heat be at 18C after the heat be at 18C after the heat exchange processexchange processexchange processexchange processexchange processexchange processexchange processexchange process

System MUST be System MUST be System MUST be System MUST be System MUST be System MUST be System MUST be System MUST be designed and on designed and on designed and on designed and on designed and on designed and on designed and on designed and on commissioning TESTED commissioning TESTED commissioning TESTED commissioning TESTED commissioning TESTED commissioning TESTED commissioning TESTED commissioning TESTED to ensure airflows satisfy to ensure airflows satisfy to ensure airflows satisfy to ensure airflows satisfy to ensure airflows satisfy to ensure airflows satisfy to ensure airflows satisfy to ensure airflows satisfy Part F 2006Part F 2006Part F 2006Part F 2006Part F 2006Part F 2006Part F 2006Part F 2006

Poor Flexible DuctingPoor Flexible Ducting

Poor Flexible DuctingPoor Flexible Ducting

NuTech Rigid DuctingNuTech Rigid Ducting

Passive Housing Passive Housing –– The Benefits The Benefits

•• Low Energy BillsLow Energy Bills

•• ComfortComfort

•• Healthy atmosphereHealthy atmosphere

•• Known future costs for heating, hot water and ventilationKnown future costs for heating, hot water and ventilation

•• Reasonably Reasonably ‘‘ Future ProofedFuture Proofed’’

Comfort vs surface temp.Comfort vs surface temp.Comfort vs surface temp.Comfort vs surface temp.Comfort vs surface temp.Comfort vs surface temp.Comfort vs surface temp.Comfort vs surface temp.

9,5

16,2 18,5

18,2effective

22

air

14,5

- 10°COutside

-air

Normal House Passive House

19,1

21,4 21,6

21,2effective

22air

17,8

Source: Xavier Dubuisson

If we get the insulation to work If we get the insulation to work If we get the insulation to work If we get the insulation to work If we get the insulation to work If we get the insulation to work If we get the insulation to work If we get the insulation to work

properly and if the house is properly and if the house is properly and if the house is properly and if the house is properly and if the house is properly and if the house is properly and if the house is properly and if the house is

correctly airtight correctly airtight correctly airtight correctly airtight correctly airtight correctly airtight correctly airtight correctly airtight -------- THENTHENTHENTHENTHENTHENTHENTHEN

The NuTech Passive Solar HouseThe NuTech Passive Solar House

Designed levels of ventilation give designed levels of humidityDesigned levels of ventilation give designed levels of humidity

NuTech Passive Solar Housing for Wicklow County NuTech Passive Solar Housing for Wicklow County Council in the village of KnockanannaCouncil in the village of Knockananna

This village is located This village is located This village is located This village is located This village is located This village is located This village is located This village is located

in the Wicklow in the Wicklow in the Wicklow in the Wicklow in the Wicklow in the Wicklow in the Wicklow in the Wicklow

mountainsmountainsmountainsmountainsmountainsmountainsmountainsmountains

It was cutIt was cutIt was cutIt was cutIt was cutIt was cutIt was cutIt was cut--------off for 2off for 2off for 2off for 2off for 2off for 2off for 2off for 2--------

weeks during the weeks during the weeks during the weeks during the weeks during the weeks during the weeks during the weeks during the

recent snowrecent snowrecent snowrecent snowrecent snowrecent snowrecent snowrecent snow

Housing at Knockananna, Co WicklowHousing at Knockananna, Co Wicklow

Outside Air Temp down to Outside Air Temp down to Outside Air Temp down to Outside Air Temp down to ----3.5C3.5C3.5C3.5C

An Internal Wood pellet StoveAn Internal Wood pellet Stove

Integrated HRV and Heat Pump Integrated HRV and Heat Pump –– the the compact systemcompact system

••The Power output is The Power output is The Power output is The Power output is The Power output is The Power output is The Power output is The Power output is

very lowvery lowvery lowvery lowvery lowvery lowvery lowvery low

••The air temperature The air temperature The air temperature The air temperature The air temperature The air temperature The air temperature The air temperature

after the HRV will not be after the HRV will not be after the HRV will not be after the HRV will not be after the HRV will not be after the HRV will not be after the HRV will not be after the HRV will not be

that highthat highthat highthat highthat highthat highthat highthat high

••The Thermal response The Thermal response The Thermal response The Thermal response The Thermal response The Thermal response The Thermal response The Thermal response

of the house will be slowof the house will be slowof the house will be slowof the house will be slowof the house will be slowof the house will be slowof the house will be slowof the house will be slow

NuTech Passive Solar Housing at Oldtown for NuTech Passive Solar Housing at Oldtown for Fingal Co County CouncilFingal Co County Council

Wall UWall UWall UWall UWall UWall UWall UWall U--------Value = 0.16 Value = 0.16 Value = 0.16 Value = 0.16 Value = 0.16 Value = 0.16 Value = 0.16 Value = 0.16

W/m2.KW/m2.KW/m2.KW/m2.KW/m2.KW/m2.KW/m2.KW/m2.K

Ground Floor = 0.16 Ground Floor = 0.16 Ground Floor = 0.16 Ground Floor = 0.16 Ground Floor = 0.16 Ground Floor = 0.16 Ground Floor = 0.16 Ground Floor = 0.16

W/m2.KW/m2.KW/m2.KW/m2.KW/m2.KW/m2.KW/m2.KW/m2.K

Roof = 0.14 W/m2.KRoof = 0.14 W/m2.KRoof = 0.14 W/m2.KRoof = 0.14 W/m2.KRoof = 0.14 W/m2.KRoof = 0.14 W/m2.KRoof = 0.14 W/m2.KRoof = 0.14 W/m2.K

Windows = 0.80Windows = 0.80Windows = 0.80Windows = 0.80Windows = 0.80Windows = 0.80Windows = 0.80Windows = 0.80

Airtightness = 0.60 ACH at Airtightness = 0.60 ACH at Airtightness = 0.60 ACH at Airtightness = 0.60 ACH at Airtightness = 0.60 ACH at Airtightness = 0.60 ACH at Airtightness = 0.60 ACH at Airtightness = 0.60 ACH at

50 Pa50 Pa50 Pa50 Pa50 Pa50 Pa50 Pa50 Pa

BER: 48 kWh/m2.year i.e. BER: 48 kWh/m2.year i.e. BER: 48 kWh/m2.year i.e. BER: 48 kWh/m2.year i.e. BER: 48 kWh/m2.year i.e. BER: 48 kWh/m2.year i.e. BER: 48 kWh/m2.year i.e. BER: 48 kWh/m2.year i.e.

an A2 Ratingan A2 Ratingan A2 Ratingan A2 Ratingan A2 Ratingan A2 Ratingan A2 Ratingan A2 Rating

Grid Connected Solar PVGrid Connected Solar PV

1000 W/m2 (peak)

170 W/m2

160 W/m2

Junction box

DC/AC inverter

Meter (smart)

Grid-connection

Electrical loads

NuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar House

1. 1. 1. 1. 1. 1. 1. 1. The Fabric The Fabric The Fabric The Fabric The Fabric The Fabric The Fabric The Fabric

•• Insulate effectively and to a reasonably high levelInsulate effectively and to a reasonably high levelInsulate effectively and to a reasonably high levelInsulate effectively and to a reasonably high levelInsulate effectively and to a reasonably high levelInsulate effectively and to a reasonably high levelInsulate effectively and to a reasonably high levelInsulate effectively and to a reasonably high level

Walls & Roof Walls & Roof Walls & Roof Walls & Roof Walls & Roof Walls & Roof Walls & Roof Walls & Roof –––––––– 0.15 W/m2.K; 0.15 W/m2.K; 0.15 W/m2.K; 0.15 W/m2.K; 0.15 W/m2.K; 0.15 W/m2.K; 0.15 W/m2.K; 0.15 W/m2.K; Ground floor Ground floor Ground floor Ground floor Ground floor Ground floor Ground floor Ground floor –––––––– 0.25 W/m2.K; 0.25 W/m2.K; 0.25 W/m2.K; 0.25 W/m2.K; 0.25 W/m2.K; 0.25 W/m2.K; 0.25 W/m2.K; 0.25 W/m2.K;

Windows Windows Windows Windows Windows Windows Windows Windows –––––––– 1.4 W/m2.K (NB: Save cost of triple glazing 1.4 W/m2.K (NB: Save cost of triple glazing 1.4 W/m2.K (NB: Save cost of triple glazing 1.4 W/m2.K (NB: Save cost of triple glazing 1.4 W/m2.K (NB: Save cost of triple glazing 1.4 W/m2.K (NB: Save cost of triple glazing 1.4 W/m2.K (NB: Save cost of triple glazing 1.4 W/m2.K (NB: Save cost of triple glazing –––––––– double double double double double double double double glazing can be adequate)glazing can be adequate)glazing can be adequate)glazing can be adequate)glazing can be adequate)glazing can be adequate)glazing can be adequate)glazing can be adequate)

•• Air tighten the house to a measured level ( < 1.0 Air Changes peAir tighten the house to a measured level ( < 1.0 Air Changes peAir tighten the house to a measured level ( < 1.0 Air Changes peAir tighten the house to a measured level ( < 1.0 Air Changes peAir tighten the house to a measured level ( < 1.0 Air Changes peAir tighten the house to a measured level ( < 1.0 Air Changes peAir tighten the house to a measured level ( < 1.0 Air Changes peAir tighten the house to a measured level ( < 1.0 Air Changes per r r r r r r r Hour at 50 Pa)Hour at 50 Pa)Hour at 50 Pa)Hour at 50 Pa)Hour at 50 Pa)Hour at 50 Pa)Hour at 50 Pa)Hour at 50 Pa)

•• Remove Thermal Bridging at joints in the construction componentsRemove Thermal Bridging at joints in the construction componentsRemove Thermal Bridging at joints in the construction componentsRemove Thermal Bridging at joints in the construction componentsRemove Thermal Bridging at joints in the construction componentsRemove Thermal Bridging at joints in the construction componentsRemove Thermal Bridging at joints in the construction componentsRemove Thermal Bridging at joints in the construction components ––––––––this can be tied in with the insulation systemsthis can be tied in with the insulation systemsthis can be tied in with the insulation systemsthis can be tied in with the insulation systemsthis can be tied in with the insulation systemsthis can be tied in with the insulation systemsthis can be tied in with the insulation systemsthis can be tied in with the insulation systems

NuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar HouseNuTech Passive Solar House

2.2.2.2.2.2.2.2. The Energy Supply systemThe Energy Supply systemThe Energy Supply systemThe Energy Supply systemThe Energy Supply systemThe Energy Supply systemThe Energy Supply systemThe Energy Supply system

•• Use an effective, designed HRV systemUse an effective, designed HRV systemUse an effective, designed HRV systemUse an effective, designed HRV systemUse an effective, designed HRV systemUse an effective, designed HRV systemUse an effective, designed HRV systemUse an effective, designed HRV system

•• Compensate for poorer insulation by utilising the ENERGY GAINS Compensate for poorer insulation by utilising the ENERGY GAINS Compensate for poorer insulation by utilising the ENERGY GAINS Compensate for poorer insulation by utilising the ENERGY GAINS Compensate for poorer insulation by utilising the ENERGY GAINS Compensate for poorer insulation by utilising the ENERGY GAINS Compensate for poorer insulation by utilising the ENERGY GAINS Compensate for poorer insulation by utilising the ENERGY GAINS by way of the integrated Thermomax Evacuated Tube Solar by way of the integrated Thermomax Evacuated Tube Solar by way of the integrated Thermomax Evacuated Tube Solar by way of the integrated Thermomax Evacuated Tube Solar by way of the integrated Thermomax Evacuated Tube Solar by way of the integrated Thermomax Evacuated Tube Solar by way of the integrated Thermomax Evacuated Tube Solar by way of the integrated Thermomax Evacuated Tube Solar Array for both Space Heating by way of the HRV system and for Array for both Space Heating by way of the HRV system and for Array for both Space Heating by way of the HRV system and for Array for both Space Heating by way of the HRV system and for Array for both Space Heating by way of the HRV system and for Array for both Space Heating by way of the HRV system and for Array for both Space Heating by way of the HRV system and for Array for both Space Heating by way of the HRV system and for solar hot watersolar hot watersolar hot watersolar hot watersolar hot watersolar hot watersolar hot watersolar hot water

•• Use the HRV system as the method of distributing the heat to Use the HRV system as the method of distributing the heat to Use the HRV system as the method of distributing the heat to Use the HRV system as the method of distributing the heat to Use the HRV system as the method of distributing the heat to Use the HRV system as the method of distributing the heat to Use the HRV system as the method of distributing the heat to Use the HRV system as the method of distributing the heat to the house by day and by nightthe house by day and by nightthe house by day and by nightthe house by day and by nightthe house by day and by nightthe house by day and by nightthe house by day and by nightthe house by day and by night

•• Save on a conventional radiator heating systemSave on a conventional radiator heating systemSave on a conventional radiator heating systemSave on a conventional radiator heating systemSave on a conventional radiator heating systemSave on a conventional radiator heating systemSave on a conventional radiator heating systemSave on a conventional radiator heating system

•• Use an Air to Water Heat Pump as the backUse an Air to Water Heat Pump as the backUse an Air to Water Heat Pump as the backUse an Air to Water Heat Pump as the backUse an Air to Water Heat Pump as the backUse an Air to Water Heat Pump as the backUse an Air to Water Heat Pump as the backUse an Air to Water Heat Pump as the back--------up energyup energyup energyup energyup energyup energyup energyup energy

Thank you for listeningThank you for listeningThank you for listeningThank you for listeningThank you for listeningThank you for listeningThank you for listeningThank you for listening…………………………………………

Bill Quigley & Mark ForkinBill Quigley & Mark ForkinBill Quigley & Mark ForkinBill Quigley & Mark ForkinBill Quigley & Mark ForkinBill Quigley & Mark ForkinBill Quigley & Mark ForkinBill Quigley & Mark Forkin

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