Tag Archives: ventilation

AuSES Conference Best Papers: Wind Power

We have prepared list of solar-e.com’s own selection of ranked candidates for the best Wind Power papers presented at the

‘Solar 2010’ Conference: Policies and Strategies (including the Economics of solar energy, diversity of derived forms of solar energy, electricity grids and data collection)

The analysis and understanding the of more obscure fields of solar energy related technology and policy developments is obviously another critical step forward to applying more solar energy in our economy. this section will hopefully expand as more papers are delivered in the future.

Student Prizes – Wal Read Memorial Prizes
Post Graduates Prizes
BILBAO, Jose “PV-Thermal Water Systems as a Retrofit for Near Zero Energy Homes”
Winner   $1500 AUD
BAMBROOK, Shelley  ” Experimental PVT Air System for Dwellings”
Highly Commended $1000 AUD
LHENDUP, Tshewang  “Simulation of a Ground-coupled Heat Pump Combined with Solar Collectors”
Commended $250 AUD
ELLISTON, Ben  “Grid parity: A potential misleading concept?”
Commended $250 AUD

Undergraduates Prizes
BRAZIER, Thomas  “Dependence of installed cost of a 1.5 kW rooftop PV system on module efficiency”
Joint Winner $1,000 AUD
BOEREMA, Nicholas  “Economics of constraints on wind farms – SA”
Joint Winner $1,000 AUD
O’BRIEN, Paul “Exergetic analysis of a steam-flashing thermal storage system”
Joint Winner $1,000 AUD

Wind Power : Solar-e.com Director Garry Baverstock’s personal selection of the Best Papers

At the conference the papers were presented under a number of category headings such as Built Environment, Wind Power, Photovoltaics, Environmental Benefits, Solar Thermal and Economics. Following is our selection of the worthwhile papers and a ranking based on relevance to world situation on Climate Change, the impact on the increased use of solar energy and the quality of the research as presented in the paper.
The best papers, in our opinion, have been listed. This is our opinion, but we are interested in what the solar experts think and any comments are welcome. If we have overlooked a paper or you disagree with our assessment please feel free to offer your opinion. If bona fide it will be published.

WIND POWER

Image of windmills old and new

A comment by Garry Baverstock, A.M. follows each heading.

1. Impacts of Distributed Wind Generation on Distribution Networks

N. K. Roy, H. R. Pota, M. A. Mahmud, and M. J. Hossain

Comment: Wind power needs this technical analysis for it to find its rightful place in the renewable energy mix in Australia.

2. The Economics of Transmission Constraints on Wind Farms – some evidence from South Australia

Nicholas Boerema1, Iain MacGill2

Comment: Good feed back about the effectiveness of wind farms in South Australia

A message from AuSES
People who were not delegates at Solar 2010 (or AuSES members) who would like to access this resource they can apply for access for an annual fee of $140 (ex GST). Please go to AuSES website.

Solar-e.com invites you to leave comments at the end of this article.

Experts who disagree with our rating and choices we invite you to make comment and if enough substance is shown we will reserve the right to change the ranking at anytime or keep the ranking the same.

solar-e.com related links:

http://solar-e.com/knowledge/2009/11/30/green-economics
http://solar-e.com/knowledge/2009/11/24/ethical-investment
http://solar-e.com/knowledge/2009/11/30/employment-opportunities
http://solar-e.com/knowledge/2009/11/30/wave-power
http://www.solartec.iinet.net.au/solare/innovation/strategiesindevelopingproducts.htm

 

AuSES Conference Best Papers: Built Environment

We have prepared list of solar-e.com’s own selection of ranked candidates for the best Built Environment papers presented at the

‘Solar 2010’ Conference: Policies and Strategies (including the Economics of solar energy, diversity of derived forms of solar energy, electricity grids and data collection)

The analysis and understanding the of more obscure fields of solar energy related technology and policy developments is obviously another critical step forward to applying more solar energy in our economy. this section will hopefully expand as more papers are delivered in the future.

AuSES Committee – Best Papers at AuSES Solar 2010 as judged by the AuSES panel

Student Prizes – Wal Read Memorial Prizes
Post Graduates Prizes
BILBAO, Jose “PV-Thermal Water Systems as a Retrofit for Near Zero Energy Homes”
Winner $1500 AUD
BAMBROOK, Shelley “Experimental PVT Air System for Dwellings”
Highly Commended $1000 AUD
LHENDUP, Tshewang “Simulation of a Ground-coupled Heat Pump Combined with Solar Collectors”
Commended $250 AUD
ELLISTON, Ben “Grid parity: A potential misleading concept?”
Commended $250 AUD

Undergraduates Prizes
BRAZIER, Thomas “Dependence of installed cost of a 1.5 kW rooftop PV system on module efficiency”
Joint Winner $1,000 AUD
BOEREMA, Nicholas “Economics of constraints on wind farms – SA”
Joint Winner $1,000 AUD
O’BRIEN, Paul “Exergetic analysis of a steam-flashing thermal storage system”
Joint Winner $1,000 AUD

Built Environment: Solar-e.com Director Garry Baverstock’s personal selection of the Best Papers

At the conference the papers were presented under a number of category headings such as Built Environment, Wind Power, Photovoltaics, Environmental Benefits, Solar Thermal and Economics. Following is our selection of the worthwhile papers and a ranking based on relevance to world situation on Climate Change, the impact on the increased use of solar energy and the quality of the research as presented in the paper.
image of apple on booksThe best papers, in our opinion, have been listed. This is our opinion, but we are interested in what the solar experts think and any comments are welcome. If we have overlooked a paper or you disagree with our assessment please feel free to offer your opinion. If bona fide it will be published.

BUILT ENVIRONMENT

A comment by Garry Baverstock, A.M. follows each heading.

1. A Method for Practical Zero Carbon Refurbishments: A Residential Case Study

John Shiel1,2, Dr Steffen Lehmann3, Dr Jamie MacKee1

Comment: This is a complex issue and needs to be ‘fully understood with a price on carbon near to implementation, throughout the developed world.

2. PVT Water Systems as a viable Retrofitting for near Zero Energy Homes in Sydney Climate

J. Bilbao*, A.B. Sproul

Comment: This work is prize winning for the student and has great vision to the most pressing issue in our built environment, retrofitting our 7.5 million homes already built.

3. Mandatory Disclosure of House Energy Rating in the Australian Capital Territory

Trevor Lee

Comment: Lee’s work shows clearly the way forward in making home-owners more conscious of energy efficiency and the use of passive active solar strategies in their homes and achieve higher resale prices which is consistently possible with an energy efficient house.

4. A model for integrating passive elements into building ventilation and air-conditioning

Wasim Y. Saman1; Martin Belusko; Alemu Tiruneh

Comment: We need better simulation modelling that includes all passive elements and particularly natural ventilation in the built environment.

5. Performance comparisons of sky window spectral selective and high emittance radiant cooling systems under varying atmospheric conditions.

Dr Angus Gentle, Prof Geoff Smith

Comment: It is good to see highly qualified physicists getting involved in such a practical application with enormous benefits for low energy cooling systems in buildings in the future.

6. Gas Booster Solar Water Heaters: Queensland Case Studies of Installation Practices on New Homes

Wendy Miller, Raymond Miller
Comment: This is just the type of feedback that government and industry needs to know about installation practices when building an energy efficient house.

7. Experimental PVT Air System for Residential Dwellings

S. Bambrook, A. Sproul, School of Photovoltaic and Renewable Energy
Comment: This paper described evaluation of combining synergistic objectives of winter semi active heating as well as improving the efficiency of grid connected domestic systems. Great potential in the future retrofitting of houses in cool temperate climates.

8. An Indirect Evaporative Cooler for Supplying Air Near the Dew Point

Frank Bruno
Comment:Indirect evaporative cooling is about to become mainstream in commercial building and domestic use.
9. Low Cost, building Integrated CPV Using Standard Solar Panels

Dr Alonso Marquez, Ideasol Australia Pty Ltd
Comment: Cost is such an important issue and this paper has a practical application
10. The Development of a large Building Integrated Solar Collector for Pool Heating

TN Anderson M Duke, JK Carson, R Kunnemeyer and B Smith
Comment: Integrated systems in architecture are predicted to increase in popularity over the next 20 – 30 years.

11. Fast Thermal modelling Using Micro-Cap

GA Parnis, AB Sproul
Comment: Quicker thermal prediction tools are needed for designers

12. Photovoltaic Panels+Air Conditioners+Multi-Objective Evolutionary Algorithms+A win-win situation

Christian Perfumo, JK Ward, and J Braslavsky
Comment: Combining the waste heat from photovoltaics provides some interesting possibilities over the coming decades

13. Simulation of a Ground –coupled Heat Pump Combined with Solar Collectors

Tshewang Lhendup, Lu Aye and RJ Fuller
Comment: There will be an explosion in innovation of combining systems once a carbon price is set worldwide

DO YOU WISH TO BUY ANY OF THESE PAPERS?

A message from AuSES
People who were not delegates at Solar 2010 (or AuSES members) who would like to access this resource they can apply for access for an annual fee of $140 (ex GST). Please go to AuSES website.

Solar-e.com invites you to leave comments at the end of this article.

Experts who disagree with our rating and choices we invite you to make comment and if enough substance is shown we will reserve the right to change the ranking at anytime or keep the ranking the same.

http://solar-e.com/knowledge/2009/11/30/green-economics
http://solar-e.com/knowledge/2009/11/24/ethical-investment
http://solar-e.com/knowledge/2009/11/30/employment-opportunities
http://solar-e.com/knowledge/2009/11/30/wave-power
http://www.solartec.iinet.net.au/solare/innovation/strategiesindevelopingproducts.htm

Quick Guidelines for a Passive Solar House

Garry Baverstock
Co-Founder & Director, solar-e.com
Email: g.baverstock@solar-e.com

The aim of this Energy Efficient House Scheme is to enable home buyers to readily identify houses and house designs which offer a recognized standard of comfort and energy efficiency. There are six important features.

  • Orientation
  • Windows
  • Mass
  • Insulation
  • Ventilation
  • Hot water service

The scheme should demonstrate than an energy efficient house is affordable.

Land subdivisions where the scheme is being promoted should have a majority of blocks which are oriented east-west and which encourage the building of energy efficient housing. To avoid conflict with other important energy conservation messages the subdivisions should be reticulated with gas, and should have public transport available.

Orientation

The house should have a rectangular shape with long axis close to east-west. These blocks should form the majority of blocks in a housing estate for reasons of privacy and cost efficiency.

  • The orientation can deviate from magnetic north by 20 °W and 20 °E.
  • The ratio of long to short axis must be greater than 1.5 as a general rule.
  • Proportions become longer in cold climates and shorter, more squarish in hotter climates.

Windows

North (south in Southern Hemisphere)

The living area should be facing north and have the largest window area.

North facing windows should be shaded in summer and unshaded in winter. Shading to north windows can be fixed (pergolas or eaves), or adjustable.

  • North facing glass should be clear, not tint or reflective in temperate climates (special glass is of use in more extreme climates).
  • Fixed shading should have a projection of at least 0.25 x height sill to overhang and no more than 0.45.
  • The effective area of N facing glass should be between 20% ad 35% of effective floor area for temperate climates. This ratio increases for cold climates and decreases for hotter climates.

Recommendations:
Adjustable shading devices such as awnings, shutters and pergolas with deciduous creepers are always to be preferred to fixed shading. Fixed shading that keeps out unwanted summer sunlight will also keep some of the winter sunlight also.

East and West

Windows on the east and west should be minimized and/or shaded or otherwise treated to keep out the sun. fixed shading provided by pergolas or an eaves overhang is not useful on the east or west walls.

  • The effective area of glass on the east and west should be not more than 5% of the total effective floor area.
  • The effective area of glass on the west should be not more than 2% of the total effective floor area.
  • The effective area of east and west facing windows should not exceed 15% of the floor area of the rooms they are in.
  • Extra glass may be used if tinted or reflective glass is used on the north, east or west elevations or if shading devices above minimum requires are used. To find the allowance glass area in tint or reflective glass etc divide the ‘effective’ glass area by the solar shading coefficient. Glass must be provided with shading with a coefficient of not more than 0.3 before calculating the area of additional glass made possible by the use of additional shading.
  • West facing clear glass windows must be provided with adjustable shading.

These ratios are for temperate climates and vary in hotter and colder climates.

Recommendations:
Tinted glass and adjustable shading is recommended for east and west windows. Shading of east and west walls with suitable plants is recommended.

South

South facing glass does not require shading but should be limited to prevent heat loss in winter.

  • South + East + West facing glass should be not more than 15% of the total effective floor area. The glass area limit cannot be increased by using shading for temperate climates. This strategy is also useful for cold climates.

Recommendations:
Tint or reflective glass is recommended for south facing windows and excessive areas facing west and maybe east, depending on computer thermal analysis results.

Mass

Sufficient thermal mass (materials like brick and concrete which absorb heat) should be provided to stablise air temperatures, particular in summer.

  • Construction should be on a concrete slab
    Internal walls in the living area should have a heat capacity of >1400kJ/m³.

Recommendation:
A significant proportion of the floor in N-facing rooms should be covered with tiles, slate or similar heat absorbing hard surface but any surface on concrete will still work over a 24 hour period, provided doors and windows remain closed in extreme weather conditions.

Insulation

Roof insulation of R1.5 or greater is required. Perimeter walls of light weight, which would otherwise heat quickly must have an R value of at least 1.0 for temperate climates. Naturally rates dramatically climb to R4 and above in extremely hot or cold climatic regions.

Ventilation

Recommendation:
Doors to the exterior of the house or rooms with high-flow fixed ventilation like bathrooms and toilets should be weather stripped. Chimneys should be provided with a damper.  Adequate cross ventilation should be provided for both living and sleeping areas for summer cooling.

Water Heaters

The hot water system should be either gas or solar, gas boosted preferably where hydro-electricity is not available.

This content has been provided by RISE (Research Institute for Sustainable Energy) as part of undergraduate level revision and the expanded knowledge program associated with the
Master of Science in Environmental Architecture course.

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