Archives: Case Studies

Case Studies

Madrid Hotel Retrofit Case Study

CONTEXT

Rated at 4-stars, the Hotel ILUNION Pio XII in Madrid, Spain sought to save energy in their kitchens. In 2014, they hired Melink to install Intelli­-Hood® demand control kitchen ventilation as a means to reach this goal. Here is more information regarding the hotel kitchens:

  • Total motor power: 6 HP
  • Daily operating hours: 14
  • Days per week: 7
  • Weeks per year: 52
  • Cost per kilowatt hour: 0.11 EURO

RESULTS

Intelli-Hood saved 8,072 EURO in utility costs and reported an average fan speed of 56%. This resulted in a 2.1-year payback and reduced carbon emissions.

Below is a sample graph of the varying exhaust fan speed for one day at the hotel:

And the below graphic indicates the before (navy) and after (green) reductions in kilowatt hours, heat load, and exhaust volume:

 

Could Intelli-Hood® be a fit for my project?

Are you curious how much energy Intelli-Hood® could save within your commercial or industrial kitchens?  Submit an energy savings estimate request form at the bottom of our Intelli-Hood® page to get started.

Hong Kong Hotel Retrofit Case Study

CONTEXT

With 602 beautifully designed rooms and 8 luxurious restaurants and lounges, The JW Marriott in Hong Kong, China sought to save energy and reduce their carbon footprint while offering a 24/7 dining service. In 2014, they decided to install Melink’s patented Intelli­-Hood® demand control kitchen ventilation as a means to reach this goal. Here is more information regarding the hotel kitchens:

  • Total motor power: 15 HP
  • Daily operating hours: 24
  • Days per week: 7
  • Weeks per year: 52
  • Cost per kilowatt hour: $0.14

RESULTS

Intelli-Hood® saved $8,249 in utility costs and reported an average fan speed of 76%. This resulted in a 2-year payback and and reduced carbon emissions.  The JW Marriott team is very pleased.

demand control ventilation energy savings and payback with Intelli-Hood

Below is a sample graph of the varying exhaust fan speed for one day at the hotel:

variable speed exhaust fan graph at JW Marriott

And the below graphic indicates the before (navy) and after (green) reductions in kilowatt hours, heat load, and exhaust volume:

before and after kilowatt, heat load, and CFM savings

 

Could Intelli-Hood® be a fit for my project?

Are you curious how much energy Intelli-Hood® could save within your commercial or industrial kitchens?  Submit an energy savings estimate request form at the bottom of our Intelli-Hood® page to get started.

Restaurant Retrofit Case Study

CONTEXT

A popular national restaurant chain, which also is a leader in sustainability, adopted Melink’s patented Intelli­-Hood® HVAC controls package as an energy conservation measure. The company’s goal was to achieve a 60 percent reduction in exhaust fan energy across its 80 properties. Following is an excerpt from its 2016 Corporate Sustainability Report:

“We tested an innovative demand ventilation system at our restaurant in Pleasanton, CA, which automatically adjusts the exhaust and make up air fan speed by measuring the temperature, steam and smoke in the hood. By having the fan speed ramp up or down as needed, the amount of energy used compared to standard fans is significantly reduced by as high as 60 percent. We are now in the process of rolling out the system to approximately 120 locations, potentially reducing our energy use by as much as 63,000 kWh’s per location.”

RESULTS

Savings across the restaurant company’s portfolio have been impressive and exceeded expectations. Not only has the company enjoyed increased operating profit as a result of the 65 percent reduction in energy usage, but its utility bill has dropped by $702,240 annually since 2015.

Energy savings graphic

Below is a sample graph of the varying exhaust fan speed for one day at one location:

demand controlled ventilation

COULD INTELLI-HOOD® BE A FIT FOR MY PROJECT?

Are you curious how much energy Intelli-Hood® could save within your commercial or industrial kitchens?  Submit an energy savings estimate request form at the bottom of our Intelli-Hood® page to get started.