Exposed AC and ducts. How would you like to tackle this??

Some of the things homeowners, business owners and maintenance staff will do to help a struggling AC system is unbelieveable.  I am using THIS commercial AC photo to try and prove how effective an RCC is when applied to a rooftop AC unit and ducts.

This is the roof of a hospital.  It is a 3 story hospital but this is the first floor roof over their labs, operating rooms and cafeteria.  The plant operation manager said he had a little problem with the AC for the first floor.  He took me to the 3rd floor where I took a few pictures. 

 

One of these units servced their 'Cardio Cath lab'.  They did specific heart surgery there.  When they had a surgery scheduled, one of the plant ops staff and two of the housekeeping staff would be on the roof.  They would wrap white sheets around the AC unit and insulated ducts.  Then they took 2 garden hoses and continually sprayed down the unit and ducts with water to try and keep it cool enough.  .

 

A staff infection from a surgery is one of a hospitals biggest fears, they can be epic sized lawsuits.

 

The ducts were insulated wth firberglass , wrapped with a plastic coating and sealed tight.  That fell far short of what they required to insulate the metals to keep the lab as cool as they needed it to be.  Even the sheets and water di not keep them cool enough.

 

RCC applied to the unit and ducts solved the problem.  No more hosers on the roof.

 

The same can be done with residential AC units that are exposed .  This small unit coated dropped the air temperature coming into the house by 5 degrees.

 

This AC unit coated with an RCC dropped the air temperature coming into the house by 12 degrees.  I was never told which duct was the supply and which was the return duct.  Coating that AC unit and exposed ducts  resulted in a 25% drop in their total electric bill, a $125.00 per month savings for the homeowner.

That was accomplished with an estimated 2 to 3 quarts of the RCC coating.  It doesnt take much exposed ducts to absorb a great deal of heat energy and cost the homeowner a huge chunk of their energy bill..

Here are 3 large tanks outside a very large church in Texas. 

 

The tanks are filled with ice before services.   It can reach 118 degrees there.  Duct work goes through the ice tanks to cool the air before it reaches the AC unit.  Huge expense there.  Ice would last only 1 day.  After coating with our RCC, they would still have 'Mostly' ice inside 5 days later.

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These are air handlers on the roof of a hospital in central Cal.  They all have chiller water pipes and steam pipes from their boilers running to them.  It was ridiculous how many there were.  A few years before, someone decided to make oversized 'Shrouds' out of galvanized steel to shade every one of these units.  There was around a 2 inch gap between the shroud and the bare gtalvanized units themselves.

This very expensive project did nothing for their cooling problems.

We removed the shroud from the unit they said gave them the most problem.  I coated it with our RCC and they air came into the building 10 degrees colder than before.  The nice folks at this hospital had no clue about the three modes of heat transfer.  A few months later they ordered a bunch and coated the units themselves. 

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Just a few other examples of some of the things folks go through to try and make their AC systems work for them..

THE RCC CLASSROOM

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