Education

Situation

If you were conservative on your load calculations and your chillers are oversized, your life cycle analysis should account for this.

Focus

Benefit

PLV Pro takes just minutes to run and enables chiller nominal tons to exceed building load to ensure proper weighting in the life cycle analysis.

Situation

Its fall and the outdoor air is cool and dry. Aggressive chilled water reset can be used to save energy. 

Focus

Benefit

Chilled water reset and cold condenser water reduce the temperature difference between condenser water and chilled water.  With the ability to operate at low lift, the 19MV leverages both into amazingly low kW/Ton values, even at high loads.

Situation

It is a peak weather day, and your students are doing remote learning. What are your chillers doing?

Focus

Benefit

The 19MV can unload to 10% without hot gas bypass. In addition it can start and stop every 15 minutes for 12 hours if needed, virtually eliminating a lockout due to excessive low load recycles.

Situation

The crowds pack the arena for the big game, overtime puts the crowd on edge and the load at peak.

Focus

Benefit

The Back-to-Back Chiller Champs have done it again. The AquaEdge 19MV centrifugal chiller with an EquiDrive™ two-stage back-to-back compressor provides an amazing combination of efficiency and operating range.

Situation

The head of the thermodynamics dept. has a novel idea to advance the vapor compression cycle and is working into the early morning hours of this cold evening.

Focus

Benefit

The sensible subcooler increases contact time between liquid refrigerant and condenser water tubes. As subcooling increases more liquid refrigerant passes through the EXV without flashing to gas, improving evaporator performance.

Situation

They've packed the auditorium for Professor Carnot's exciting lecture on the ideal fan laws on a cold and otherwise boring winter's evening.

Focus

Benefit

Cold condenser water enables better subcooling and less mass flow resulting in compressor speed reduction even at full load . The ideal fan laws work to our favor as even small reductions in speed are leveraged for exponential energy savings.

Situation

If your school doubles as a heat wave shelter, your chillers should too.

Focus

Benefit

The EquiDrive™ compressor in the 19MV provides More Operating Range, up to 10°F over design from 10% to 100% load to make buildings more resilient.

Situation

The mechanical room has (2) 500T chillers running at 75% load and one idle today.

Focus

Benefit

Each hour of operation here represents 750 ton-hours of load. (2 x 0.75 x 500 tons). By comparison, when the building needs (1) chiller at 25% load (1 x 0.25 x 500) it represents just 100 ton hours of load. Be sure to use an LCA that reflects this.

Situation

What is a simple explanation of work in an oil free chiller?

Focus

Benefit

Chiller power is related to both capacity (tons) and lift (pressure/temperature difference between evaporator and condenser). It requires more capability to operate at high lift.