Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

Transforming HVAC Efficiency-Whirlpool Commercial Facility Case Study

Armstrong Transforming HVAC Efficiency-Whirlpool Commercial Facility Case Study

Transforming HVAC Efficiency-Whirlpool Commercial Facility Case Study

OPTI-visor™ is an add-on control solution that advises a BMS system on optimal speed settings for the operation of HVAC components.

Background

Whirlpool is the world’s largest manufacturer of home appliances with brands such as Whirlpool, Maytag, Jennair and KitchenAid. Management wanted to improve the energy efficiency of a stand-alone central chiller plant at the 584,000 ft2 headquarters in Benton Harbor, Michigan. Armstrong supported the retrofit project with an installation of an OPTI-visor.

Without operating data to draw upon, the efficiency baseline was estimated to be just over 1 kW/ton. This was based on the chiller manufacturer’s published efficiency claims plus a review of system components.

It would later turn out that over 70% of the system operating hours were below 35% capacity. In this zone the chillers were using twice the published efficiency. Based on this is was collectively agreed that the real efficiency baseline closer to 1.8 kW/ton

ON/OFF testing

In the first month, the operators were still gaining trust in the system and didn’t always follow the OPTIvisor recommendations. With digital records operators were able to review operating stats in the time periods when the BAS accepted the recommendations. With approval, system efficiency was tracked for one month of operation with the OPTI-visor alternating on and off. Results showed a 0.5 kW/ton. (27%) efficiency improvement directly attributable to the OPTIVisor optimization strategy.

In all, the project was a great success. Energy consumption has been reduced by 763,000 kwh in year one. Chiller plant efficiency improved by 66%, partly through operation in free cooling mode. Financial results are equally impressive suggesting a simple payback of less than the original estimate of 3 years.

Net Project Cost: $140,000

Energy Savings/Year: $61,532

3 Year Savings: $184,597

Read more case studies from Armstrong Fluid Technology.

Related Articles

Armstrong Data centers are feeling the heat

Data Centers Are Feeling the Heat

Packaged chiller plant rooms within data centers cut installation time by up to 95%. (Image source: Adobe Stock) Kevin Laidler, sales…

Related Whitepapers

Contra-Rotating Axial Fan Design Concept for Leaf Blowers

It seems leaf blowers are everywhere in our neighborhoods, very often disturbingly noisy. There is a need for excellent aerodynamic and aeroacoustics design for such…

Split Seal + SpiralTrac® Solution Reduces Maintenance and Water Use

A wastewater treatment facility has 10 RAS (Return Activated Sludge) solids handling pumps. These pumps have been sealed using packing and replacement sleeves for several…

Protecting VFD-Driven Motors In: Meat and Poultry

The Study This field survey was conducted at Hormel Foods, Freemont, Nebraska. Voltage readings were taken from the shafts of VFD-driven motors throughout the plant…

VFDs Provide Precise Control Required to Ensure Dairy Product Quality

Milk is the basic ingredient in the production of a long list of dairy products and by-products ranging from whole pasteurized milk to cheese, to…

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *