05/10/2013

Hi Energy efficient HVAC market worth $33.2bn by 2020!.

Hi Energy efficient HVAC market worth 

$33.2bn by 2020!.

The global market for energy efficient HVAC (heating, ventilation, and air conditioning) systems will be worth $33.2bn (AED 121.9m) annually by 2020, according to a new report from Navigant Research.



Currently worth $17.2bn (AED 4.7bn), the market is expected to grow by 94.2% in the next seven years, with the Asia Pacific region predicted to take a majority share of global revenue.


“In the wake of the global recession of 2009, developed markets for efficient HVAC – especially in North America and Europe – remain sluggish,” said Bob Gohn, senior research director with Navigant Research. “However, the North American market will revive during 2013 and begin to experience more substantial growth during 2014.


Europe will follow a similar trend, but recovery will likely not occur until mid to late 2014. The strongest region for energy efficient HVAC expansion, however, will be Asia Pacific, which will account for 55%t of the world market by 2020.”

The global HVAC market, according to the report, is led by large suppliers, such as UTC (Carrier), Hitachi, Ingersoll-Rand (Trane), Daikin, and LG Electronics, many of which also produce various other products, technologies, and services.



HVAC-only manufacturers are largely limited to smaller and midsize brands such as Lennox and Uponor. Some larger suppliers, such as Johnson Controls, also provide integrated engineering and operations/ maintenance services, overlapping in part with services more traditionally provided by energy service companies.

The report, “Energy Efficient HVAC Systems”, analyses the global market opportunity for energy efficient commercial HVAC systems, including unitary systems, heat pumps, furnaces and boilers, ductless cooling, engineered cooling systems, radiant heating and cooling, and ventilation systems.

The report provides a comprehensive assessment of the demand drivers, business models, policy and regulatory factors, and technology issues associated with the global market for these systems. Key industry players are profiled in depth, and worldwide revenue forecasts – segmented by application, region, and key major countries – extend through 2020.

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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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