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Reflective Foil Insulation in Tropical Climates

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1 Reflective Foil Insulation in Tropical Climates
Prepared By Silver Batts Insulation Systems In Association with Sanrok Enterprises Who I am; economist, policy analyst, carpenter. Experience in Government, finance and industry. I have been asked to conduct a workshop today to act as a facilitator. The objective of the exercise is to arrive at robust policy framework for the electricity industry. This may involve examining a number of broader policy issues. In any policy workshop the usual approach is to try to break the problem down into a number of different areas of manageable size, and then to work to resolve as many issues as possible one at a time. In cases where there are two sides to a debate which have already crystallised their opinions to a certain extent, we should also be looking for ways to create some common ground. We need a “talking space” where both sides are together, and from that point we can look for solutions to achieve common goals.

2 Problem IT’S HOT! But People in the tropics have a laid-back outdoorsy life-style – they don’t like being cooped up in an air-conditioned house. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

3 Solution Reflective Insulation can provide
significant comfort improvements Without Air Conditioning I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

4 Thermal Management - Europe/US
Structure: Sealed envelope. Access: Air-lock doors. Analysis: Heating and cooling numbers, based on internal/external air temperature difference. “Mechanicals”: Heating/AC, bulk insulation. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

5 Thermal Management – Tropical
Structure: Partial envelope; high-set floors; high roofs; broad eaves or balconies; well ventilated. Access: Door or open doorway; louvre windows permanently open. Analysis: Total heat load = air temperature + radiation. Cooling devices: Ceiling fans, evaporative coolers. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

6 Thermal Management Traditional Tropical Architecture
Design principles: Roof ventilation dissipates solar heat gain. Raised floors assist downward heat loss. Light timber construction cools rapidly at night. Cross-ventilation adds to thermal comfort. A modern improvement: SILVER BATTS reflective insulation eliminates heat gain through roof without storing heat at night. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

7 Insulation Engineered for Warm Climates
WaveCore Silver Batts are designed for sub-tropical and tropical climates Equivalent to fibrous insulation between joists. Winter: up to R6.7 Summer: up to R1.7 Maximum resistance against heat coming in. Minimum resistance against night-time shedding of heat. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

8 Why doesn’t fibrous insulation work in warm climates?
Fibrous insulation captures air pockets; preventing convection.  very effective at keeping heat in; But less effective at keeping heat out. Heat flow down is mostly radiation, which shines through fibrous insulation at high temperatures. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

9 In Warm Climates Radiant Heat Matters!
Stephan-Boltzmann Law of radiation: w/m2 = e c t4 where e = emissivity c = ∙ t = temperature (Kelvin) Net radiant heat transfer from a fibre-cement roof at 80 degrees Celsius to a 40 degree ceiling is 300 watts per square metre. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

10 Thermal Management Subtropical Insulation
Professor Richard Aynsley says - “use reflective insulation with lower resistance against heat flow up, to facilitate shedding heat at night”. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

11 Measuring Temperature in Warm Climates
Operative temperature = weighted average of air and mean radiant temperature. For air velocity < 0.2 m/s, use the simple average of air and mean radiant temperature. Mean radiant temperature = the weighted average of all surrounding surface temperatures. (Note: relative humidity is ignored throughout this discussion.) I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

12 Operative Temperature – Equation
to ≈ (hrtr + hcta)/(hr + hc) Where to = operative temperature hr = coefficient of radiant heat transfer hc = coefficient of convective heat transfer ta = air temperature tr = mean radiant temperature I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

13 Measuring Operative Temperature
A thermometer enclosed in a black copper globe 150mm diameter measures radiant and conductive heat load, reasonably closely approximating Operative Temperature. Globe Temperature ≈ Operative Temperature

14 A Rule of Thumb Empirical work by Aynsley et al* indicates that typically - 1o increase in ceiling temperature ≈ 0.2o increase in operative temperature. * Aynsley R., Melbourne W. and Vickery B. (1977), Architectural Aerodynamics, Applied Science, London, p182. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

15 Operative Temperature in an Open Shed
On a hot sunny day in summer * – Air temperature 42o Wind speed <2 m/s Solar irradiation 1,000 w/m2 Roof temperature 90o Operative temperature 51.4o * Typical conditions for semi-arid subtropical climate; internal air temperature assumed equal to external. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

16 Reflective Foil In an Open Shed
For bright aluminium, e (emittance) = 0.03  radiation = e c t 4 ≈ 0 w/m2 Mean radiant heat 42o Operative Temperature 42o Foil under the roof eliminates radiant heat, reduces Operative Temperature by almost 10o. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

17 Operative Temperature in a Hot House
On a warm sunny day in summer * – Air temperature 32o Wind speed <2 m/s Solar irradiation 1,000 w/m2 Ceiling temperature 60o Operative temperature 37.6o  Eliminating radiant heat in ceiling can cut operative temperature by 5.6o I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

18 Foil in a Sealed Buildings or with Ceiling Fans
In sealed building, heat transfer by conduction must be addressed. Multi-Layer Silver Batts provide a cost- effective space-saving solution.

19 Single-Layer Reflective Foil Laminate
In an open shed, where the air temperature is the same as outside, foil reduces radiant heat, stops condensation. (Fibrous insulation over the foil adds no benefit.)

20 Multi-Layer Silver Batts in Residential Ceilings (1)
Multi-Layer Silver Batts: a highly effective insulation for tropical and sub-tropical climates. Pictured: High- Top WaveCore Silver Batts.

21 Multi-Layer Silver Batts in Residential Ceilings
High-Top WaveCore Silver Batts Equivalent* R value: Heat flow down: R 6.7 Heat flow up: R 1.7 * R value of bulk insulation between joists required to achieve equal overall resistance. Installation over ceiling joists eliminates heat bridge.

22 Multi-Layer Silver Batts under Steel Roof
Multi-Layer Silver Batts are the most effective of insulation against heat flow down in enclosed buildings. Pictured: Sydney warehouse with WaveCore Silver Batts R2.8 summer

23 Multi-Layer Silver Batts under Concrete
Multi-Layer Silver Batts are the most effective of insulation against heat flow down in enclosed buildings. Pictured: Sydney office block with Triple Layer Silver Batts. R2.4+ summer

24 Multi-Layer Silver Batts in Portable Buildings
Multi-Layer Silver Batts are the preferred solution where superior summer performance is required. Pictured: Melbourne portable classroom with WaveCore Silver Batts. R3.9 summer

25 About Silver Batts Insulation Systems
Established 1999. Division of Amalgamated Metal Industries P/L. Patents in Australia, NZ, US, Japan, China. Systems for residential, office, and industrial. Markets in Australia, Japan, India, NZ. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.

26 Valued Clients - Australia
Australian client base includes most major commercial builders: Multiplex, Australand, Baulderstone, Meriton. Pictured: King Street Warf development, Sydney; fitted with Triple Layer Silver Batts.

27 Export Clients - Japan In Japan,
Silver Batts are marketed in partnership with Matsumoto Kenko. Clients include Mitsui and Panasonic. Pictured: Certificate of “Superior Insulation” from Japanese Ministry of Construction.

28 Silver Batts vs Fibreglass; Features
Issue Silver Batts Fibreglass Condensation  Non-absorbent; moisture resistant  Absorbs water; can lead to damage to structure. Ease of installation  Fix to structure  Support needed in steel sheds. Seasonality  Best in summer  Best in winter. Summer Heat retention  Allows rapid night cooling  Retains heat well at night

29 Silver Batts reflective foil insulation; A solution for HOT climates
Silver Batts provide a One-Way Heat Valve prevent heat gain during the day; but allow rapid cooling at night. I have listed here some of the main issues that have arisen in this debate. I would like to briefly discuss each of them now and then seek your agreement as to the how we deal with them. Sorting out the issues, we should start at the top with the two drivers: 1) establishing and meeting the long term objectives of the party; and 2) winning the next election. Everything else ultimately comes back to these two drivers. What I would like to do today is to make sure that we first discuss all the issues that have to be dealt with in order to address these objectives. I would like to ask you to to put aside discussion of implementation issues, such as the regulatory framework, industrial relations, and so on. All these issues have been dealt with at length in the Hogg report and continue to receive the attention of the Treasurer and his staff. Let us assume for the moment that they can and will all be satisfactorily addressed. We can come back to these issues after we have resolved the central issues. I would also like to set aside the issue of retention vs. sales value. The numbers depend heavily on the assumptions that DMG have made. Under different assumptions about and efficiency the picture would be very different. I would now like to make a few comments in order to establish a context for the debate. After that I will ask you to add any issues that you would like to address today.


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