OVERVIEW:
A large hospital in Buffalo, NY, saved $946,141.00 in energy by implementing an aggressive coil cleaning program in their HVAC systems and upgrading the filtration using high technology filters from Clark Air Systems, Inc.
| Budgeted* annual electricity cost: | $2,252,500 |
| Actual annual electricity cost: | $1,650,947 |
| Electrical energy savings: | $601,553 |
| Savings are attributed to slower variable HVAC fan motors due to lower pressure drop on coil surfaces and filters. | |
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| Budgeted* annual gas & oil cost: | $1,057,800 |
| Actual annual gas & oil cost: | $600,647 |
| Gas & Oil energy savings: | $457,153 |
| Savings are attributed to lower boiler/chiller loading due to better heat transfer efficiency on clean coil surfaces. | |
| Budgeted* annual electricity cost:
Actual annual electricity cost: Electrical energy savings: |
$2,252,500
$1,650,947 $601,553 |
Savings are attributed to slower variable HVAC fan motors due to lower pressure drop on coil surfaces and filters. |
|
|
||
| Budgeted* annual gas & oil cost:
Actual annual gas & oil cost: Gas & Oil energy savings: |
$1,057,800
$600,647 $457,153 |
Savings are attributed to lower boiler/chiller loading due to better heat transfer efficiency on clean coil surfaces. |
* Budgeted numbers were based on previous years’ actual usage.
Background:
- Three-year evaluation of filter products concluded with the selection of high technology filtration from Clark Air Systems, Inc.
- The keys to the selection of Clark Air Systems over the previous commodity filters:
- The energy performance of the filters – by operating at a much lower pressure drop, significant electrical energy savings can be realized.
- Longevity and life-cycle cost of the filters – high dirt capacity, microbial resistance, durability, and lower pressure drop allow the hospital to prolong the operational life of the installed filters.
- Non-shedding, non-fiberglass final filtration, elimination of cardboard in all prefiltration.
- Service, professionalism and expertise of the Clark Air Systems representative.
- As the filter upgrade was implemented, a complete unit-by-unit cleaning was conducted on all HVAC internal surfaces including a thorough cleaning of all heat transfer surfaces.
- Energy expenditures are taken directly from the Plant Operations Spectrum spreadsheets.
HVAC renovation with UV light system and Flex Seal coating
Location: Major Medical Center -Upstate NY
Units: Two circa 1970 HVAC systems
Clark Air Systems was asked to strip the old moldy, broken insulation, which had fallen into disrepair over forty years of service; install new insulation; physically clean the coils, and apply an ultraviolet coil sanitizer.
UV system: all lamp ballasts are outside the airstream tucked away in a NEMA 4 ballast box for easy service and safety.
