1. Presented at: Kingsley’s Woolloomooloo Presented by: Ben Pearson & Dan Butt Date: 8 August 2011 Energy Efficiency for Commercial Kitchens

2. Copyright and disclaimer The Office of Environment and Heritage and the State of NSW are pleased to allow this material to be used, reproduced and adapted, provided the meaning is unchanged and its source, publisher and authorship are acknowledged. The Office of Environment and Heritage has made all reasonable effort to ensure that the contents of this document are factual and free of error. However, the State of NSW and the Office of Environment and Heritage shall not be liable for any damage which may occur in relation to any person taking action or not on the basis of this document. Office of Environment and Heritage, Department of Premier and Cabinet Phone: (02) 9995 5000 (switchboard) Email: info@environment.nsw.gov.au Website: www.environment.nsw.gov.au

3. Work book 1 / Session 1 Funding Support This project has been supported by the NSW Government as part of the Energy Efficiency Training Program – visit savepower.nsw.gov.au

4. SESSION 1 Kitchen Exhaust Basics

5. Work book 1 / Session 1 Kitchen Exhaust 1.Kitchen Ventilation Fundamentals 2.Controls 3.Optimization

6. Work book 1 / Session 1 Kitchen Exhaust Basics Package Air Handler Dedicated Kitchen Make-up Air Unit Exhaust Fan 5,000 m 3 /h 10,000 m 3 /h

7. Work book 1 / Session 1 Kitchen Exhaust Operation 16 hrs / Day 12 hrs /Day Average Fan Power (kW) 14 Annual Fan Energy (kWh)80,64060,480 Annual Operating Cost ($)13,70910,282 Manual Control Hours of Operation Assume operation 360 days per year Electricity cost $0.17Kwh Cost Saving $3,427 per annum Cost Saving $3,427 per annum OR 100 days extra hood use OR 100 days extra hood use

8. Work book 1 / Session 1 Push Back Your Appliances Kitchen Exhaust

9. Work book 1 / Session 1 Maximum Overhang (At least 150mm) Close the Gap Kitchen Exhaust

10. Work book 1 / Session 1 Kitchen Exhaust Centre Heavy Duty Appliances

11. Work book 1 / Session 1 Add Side Panels Kitchen Exhaust

12. Work book 1 / Session 1 Kitchen Exhaust Greasy ceiling tiles are a sure sign of spillage The Cause?

13. Work book 1 / Session 1 Kitchen Exhaust 4-way diffuser in front of the hood!

14. Work book 1 / Session 1 Kitchen Exhaust Research confirms heat spillage!

15. Work book 1 / Session 1 Kitchen Exhaust Thermal Plume Spillage Exhaust Hood Schlieren Optical Image

16. Kitchen Temperatures (NASA: A Compendium of Human Responses to the Aerospace Environment) When temperatures increase from 24 o C to 30 o C staff productivity decreases by over 20% Work accuracy was found to decrease by as much as 40% at 30 o C Increases in work environment temperatures reduce the productivity and accuracy of staff output

17. Work book 1 / Session 1 Kitchen Exhaust Performance Tips 1.Push appliances back 2.Centre heavy duty appliances 3.Add side panels 4.Reconfigure make-up air diffusers

18. What’s wrong here?