BE A SUPER-INSTALLER!

Guessing is Not an Option

Before detailed design can be done, many important planning steps have to be made:

• Collecting basic information  • Rough dimensioning • Cost estimate • Simulation • Design optimization

and only then...

• Detailed Planning

Collecting Basic Information

Let us start today by talking about the first step: Initial object data input - or Collecting Basic Information.

You see - because of varying energy supply from the sun, we need to know precisely the volume of hot water consumption, the consumption profile and desired water temperature. By having fewer variables in equation the result could be more accurate. To have that information is critical because all further dimensioning tasks are based on it.

The values for DHW consumption data given in different literature have been found too high in practice; and result of their use is over-sizing of the solar system with all other consequences. Often these references are old, and have been calculated to cover highest possible demand factor.

Imagine - you are just breaking-even finishing the job and the customer is demanding to fix the overheating issues on warranty... - nice prospect, isn't it?

Another very important sizing criterion is the consumption profile.

Similar buildings/institutions can have absolutely different load profiles. For example: 100 room student dorm of the Faculty of Music and 100 room dorm of the department of Physical Education. In the second one the students are taking showers after the gym, outside the dorm.

Once again - the consumption volume and profile are so crucial in getting your design done right that you don't need to even think of "guesstimating" it, but measure it!

RESOL controllers can do more then just control delta T. Every RESOL controller comes with a watchdog functionality built-in. But there is more than that inside of a DelatSol microprocessor controller! What about energy management and control process optimization? It has all that!

In the previous article we were talking about OREC - the recooling  function or Vacation Mode - a very useful function to keep the system operable (and your business profitable) and to prevent the overheating by low hot water consumption or no usage at all.

Another effective way to manage energy flow is to install multiload systems exactly how it's done in hydronic heating. Many of us have already used this technique to create dump loads like air handling units, tubing in the slab and panel radiators.

My point here is - does it create a benefit for your customer to blow away BTUs (dollars) he or she paid for in advance? Everything that we don't use - we lose! Think about it, please. Our goal should be to install a system which provides maximum energy use (not delivered) per dollar invested. Ok, back to the bolts and nuts of the DeltaSol controller.

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