16/05/2014

Hi Local! Melbourne - Australia - May HVAC Event!

Hi Local! Melbourne - Australia - May HVAC Event!
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- "Engineering Excellence.!"

Click Here To Visit Homepage.
Click Here To Visit Homepage.


"ARBS Exhibitors & Visitors Feedback!."

- Visitor Testimonials:

"(Obtained via anonymous survey held during ARBS 2010.)"

  • "ARBS was well presented could not have asked for anything further.”
  • “I found that you covered well all aspects of the industries that service our needs.”
  • “I saw everything I would have liked to have seen for domestic, commercial and industrial applications.”
  • “All products and services were well represented - didn't find anything missing. Great overall coverage.”
  • “The areas that I was interested and the people I wanted to meet were well represented.”
  • “They were all there, I just did not allow myself time to get to see them all.”
  • “All bases were covered in relation to my business.”
  • “Good representation all round.”

- Exhibitor Testimonials:

"(Provided anonymously for ARBS 2012 exhibition.)"

  • “The quality of attendees seemed quite good this year.”
  • “Well organised, great show."
  • “Good communication; well planned marketing activities.”
  • “An excellently organised and conducted event.”
  • “This is ARBS I believe had a much more higher calibre of visitors and I thought presentation and running of it was the best ARBS I have attended.”
  • “Very comprehensive show with all aspects of HVAC & R on display and many willing exhibitors.”
  • “Generally speaking we were very impressed. Good amount of traffic through, well operated and larger than we anticipated.”
  • “Thoroughly enjoyed the show, and the communication throughout was excellent.”
  • “An excellent, well administered exhibition for showcasing our specialist products. We were pleased with the overall visitor numbers, and with the quality and number of enquiries that we received.”
"(Provided anonymously for ARBS 2010 exhibition.)"
  • “Well run, and successful event. Well done!.”
  • “This was our first time entry we will be attending again.”
  • "Could not be better. We do a number of shows and no one does it as well as ARBS.”
  • “It was one of the better Exhibitions we have been to.”
  • “An excellent show. Very well organised. Good cross section of trades. Great location.”
  • "Well organised. It is a true global exhibition in terms of quality.”
  • “Worthwhile and well organised.”
  • "We felt it was the best ARBS we had attended the quality of customers was good and the organisation of the exhibition ran very smoothly.”
  • “Excellent event.”
  • "First time for me and yet am not sure if it was a success for us but I will be at the next one.”
  • “Well organised.”
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Hi Green Tip #4: Hi Size and Select Fans Near Their Peak Total Efficiency.

Even the most efficient fan models can operate inefficiently if improperly sized.Fans selected close to their peak total efficiency (pTE) will use less energy. The 2012 International Green Construction Code requires selections within 10% of peak efficiency, and ASHRAE Standard 90.1,

Energy Standard for Buildings Except Low-Rise Residential Buildings, is considering language that would require a 15% allowable range. If a fan is selected to operate more than 15 point below its peak efficiency, it is probably undersized to result in the lowest purchase price (first cost). The smaller, less-expense fan will have to run much faster with higher levels of internal turbulence than its larger cousin to meet the required air flow, thus consuming a lot more energy.The cost difference to select a larger fan closer to peak operating efficiency is very small when compared to the energy saved.

Simple payback for 10% selections is usually less than one year. Smaller fans operating faster will also require more maintenance and earlier replacement. Smaller fans generate more noise as well.Below is a table showing the output from a fan manufacturer's sizing and selection program. All of the fans in the table would "do the job" of providing the required airflow at the required pressure.

The fan sizes range from 18-inches in diameter to 36-in. Notice that as the fan diameter increases, the fan speed decreases, as does the fan power (expressed as "brake horsepower"). The red region of the table indicates poor fan selection practice - none of these fans have an actual total efficiency (at the airflow and pressure required) within 15 points of peak total efficiency. The green region indicates proper fan selection process - all have an actual total efficiency within 15 points of peak total efficiency.

Note that the 30-in. diameter fan consumes roughly half the power of the 18-in. fan. The lowest cost fan shown is probably the 20-in. fan, with an efficiency of 49%, 29 points off the peak. If this fan runs 6,000 hours per year at a utility rate of 10 cents per kwh, it will cost $4,300 a year to operate. A more efficient selection might be the 24-in. fan because it is "Class I" and complies with both ASHRAE 90.1 and the Green code requirements. It has an actual efficiency of 69%, 10 points less than the peak efficiency of 79%. This fan would cost $3,100 to operate, which is probably more than the fan itself costs. A more efficient 30 inch selection is only 1 point from its peak efficiency of 83% and will consume only $2,600 per year, saving $500 a year relative to a 24-in. fan, and $1,700 a year over the lowest cost fan. Generally, the difference in initial cost of the most efficient fan selection is paid back in less than 5 years over more common less efficient alternatives. Perhaps this observation will bring it home.

Most fans consume more each year in energy cost than they are worth. So, when you buy a fan, think of it as a liability, not an asset. Your objective should be to make the liability placed on those who will pay future energy bills as low as possible. The leverage implicit in choosing a larger, more efficient fan is much greater than most people appreciate. And fans last a long time – 20 years plus – so choose wisely.The bottom line is this. Right-sizing a fan can yield energy savings and generate a lot of operating cost savings for the facility owner or occupants for many, many years.

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