Commercial Office

Situation

The schedule lists full load efficiency and IPLV. I've been told chillers run part loaded 99% of the time … should I buy based on IPLV?

Focus

Benefit

57% of the weighting in an IPLV formula is based on 65°F entering condenser water and chiller loads of 50% or less. Is this typical of your building location? PLV Pro uses local weather and DOE load profiles as the basis for energy comparisons.

Situation

Your equipment was specified for a design day, was it designed for "having a bad day"?

Focus

Benefit

The mechanical schedule defines the minimum requirements … is that what you really want today? The 19MV can provide more operating range while providing high efficiency at design conditions.

Situation

Have you ever turned on cooling to an unoccupied floor just to keep the chillers running at low load? Well you may not need to anymore.

Focus

Benefit

The 19MV was made to run at low loads. The versitile variable speed compressor and dual EXVs provide the stability and control needed to run at low loads through hot or cold weather.

Situation

Be mindful of the impact of demand on your total annual energy bill.  Chillers with good full load efficiency can help keep demand in check.

Focus

Benefit

The full load of a 19MV can be 18% closer to its IPLV than an ASHRAE 90.1 2019 compliant chiller.

Situation

The aesthetic design requirements of your headquarters building made an air side economizer inpractical. The chiller is going to have to handle this small load.

Focus

Benefit

High compression efficiency enables optimal heat exchangers with plenty of flow turndown. This enables the condenser pump to slow with load resulting in more chiller plant energy savings than just saving on the chiller alone.

Situation

This mixed use building is full of holiday cheer … let's keep it that way!

Focus

Benefit

The BluEdge service platform is there to support you with unmatched expertise and superior service throughout the the lifecycle of your HVAC equipment.

Situation

You have an airside economizer, what does this mean for your average chiller load?

Focus

Benefit

The airside economizer eliminates a vast majority of low load chiller ton hours.  What remains are highly loaded points.  Be sure to get a chiller that also has very good kW/Ton at 75% load and above.

Situation

I have enough load to keep one chiller highly loaded. Why is it more efficient to run fewer chillers when the chiller submittal shows lower kW/Ton at 25% load?

Focus

Benefit

AHRI allows for test day tolerances.  At full load, a chiller must be within ~5% of the submittal kW/Ton, but at 25% load this tolerances is ~15%.  Furthermore, the 100% point on the submittal is at 85°F condenser water versus 65°F for the 25%  point.

Situation

What does "Chiller Lift" mean?

Focus

Benefit

Chiller lift is related to the difference between evaporator and condenser leaving water temperatures. Power consumption increases with lift. High lift is analogous to running up hill. The higher the lift the steeper the hill.