Sayr
  • Home
  • Covid 19 - Our Stance
  • Ventilation
    • Condensation >
      • More about condensation
    • Asthma and Allergies
    • Best Time to Install Home Ventilation
  • FAQ's
    • Why SAYR
  • E book
  • Blog
  • SAYR Manual
  • Moisture Spikes
  • Info
    • Contact Us
    • About >
      • Company Overview
      • Testimonials
      • Terms of Trade
      • Privacy
    • Request Free Quote

Real Time Example of Solar effects in your ceiling cavity

26/8/2014

0 Comments

 
Picture
This is a real time example of what goes on in your roof cavity in only a very short period of time. These are 2 photos of the SAYR controller taken on the same day only 2.5 hours apart in the middle of August. You can see how at 9am (example on left) the outside was a mere 12.5 degC, the temperature was already at 20.5 degC  in the roof yet it was 15.5 degC inside the house.

The example house is 3 bedroom, 150 sqm cedar and decra tile roof with 2 fans and 5 vents.

Look at the next photo on the right, same day and 2.5 hours later; the outside temp had risen 4 degC, the temp in the roof had risen over 10 degC and consequently the inside temp had risen nearly 5 degC to a comfortable 20 degC. As the afternoon wore on these temps would have risen further as typically for this time of year we would expect to see the Solar temp max out around 3pm. The bottom number (23) indicates the target temp or desired temp if there is solar energy available which can be chosen by the occupants.

This is a real demonstration indicating what actually does happen in a typical roof cavity even over the winter months. We stress, this excercise is not trying to promote these systems as heaters, they are moisture control systems however if you have vast amounts of 30+ degC air being blown into your home during the day time, what do you think the result is going to be? It is this high volume of warm dry air which is a contributing factor in keeping your home drier overall. 

We aim to have a time lapse version of this above over a 24 hour period, which will show the activity of the system over that period so watch this space.

0 Comments

Your comment will be posted after it is approved.


Leave a Reply.

    contribution by
    Bruce Dick

    Director -SAYR

    Archives

    February 2019
    January 2018
    January 2017
    December 2016
    May 2016
    February 2016
    December 2015
    November 2015
    July 2015
    June 2015
    May 2015
    March 2015
    January 2015
    December 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    May 2014
    April 2014
    March 2014
    February 2014
    January 2014
    November 2013
    October 2013
    September 2013
    August 2013

    Categories

    All

    RSS Feed

Home Ventilation

Benefits of home ventilation
Indoor air quality
Moisture and condensation
Controlling Mould in the home

Family Health -Asthma & Allergies

Asthma & Allergies
Testimonials
FAQ's
Free Home Assessment

Picture
Talk to us today
Request A Quote
Picture
Picture

Contact Us  Ph  0800 729 748
 SAYR Ventilation  P.O.Box 12827, Penrose, Auckland  Email: office@sayr.co.nz



Q Card & Q MasterCard® Terms and Conditions
^No payments and no interest. Minimum spend $2000. Annual Account Fee of $50 applies. A $55 Establishment Fee for new Q Mastercard Cardholders and a $35 Advance Fee for existing Q Card and Q Mastercard Cardholders will apply. Q Card and Q Mastercard Standard Interest Rate, currently 25.99% p.a. applies to any outstanding balance at end of a payment holiday or interest free period. Q Card and Q Mastercard lending criteria, fees, terms and conditions apply. Rate and fees are correct as at date of publication, subject to change. 
            Home    |    Privacy   |   Terms of Trade   |    About Us    |     Contact