Energy Check in Superbrugsen, Samso

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Energy Check in Superbrugsen, Samso 18 Sep 2014 Michael Kristensen and Jan Jantzen mk@energiakademiet.dk www.

2015 The sole responsibility for the content of this publication lies with the authors.

1 Energy Check in Superbrugsen, Samso 18 Sep 2014 Michael Kristensen and Jan Jantzen IEE/12/671/S Duration: The sole responsibility for the content of this publication lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EACI nor the European Commission are responsible for any use that may be made of the information contained therein.

2 OVERVIEW 2

3 Annual Consumption Category Consumption (units) Costs (direct EUR, without subscriptions) Electric kwh District heating kwh Water 600 m Total

4 The consumption is higher than normal Normal (N) kwh/m 2 /yr Actual (A) kwh/m 2 /yr Electric District heating A/N m 2 4

5 Electric energy balance 5

6 Smart meter readings, electricity Aug 2013, NRGi From graph: Nightly consumption is 37 kwh/h (coolers, freezers, cold rooms, and pumps) per hr Assume nightly consumption is / or 53% of the annual consumption 6

7 Opportunity for nightly setback Open every day, closed 20 8 all year, or 50% Baker arrives about 5:00, butcher a little later Cleaning lady decides herself, sometimes at 22:00 7

8 Result of hard advices 8

9 Soft advices Advice Train personnel Avoid standby during the night Choose emergency exit signs with low consumption. Choose lamps with daylight controls. Install digital thermostat valves on radiators Motion sensor on lights in backroom, lunch, toilets Use LED in lamps directed into coolers/freezers Install dayligt control of lamps in the entrance Use fewer light tubes and better reflectors in the entrance Dismiss some of the halogen lamps Replace halogen with LED Switch tubes off above shelves, bottle coolers and beam by the cashier Install freezers with a lid, lid for 2 end boxes Install on/off timer for the liver pate heater Cost EUR < 25 EUR 65 EUR extra per sign 650 EUR per lamp EUR for 5 valves 9

10 COMFORT HEATING / COOLING 10

11 Food heater Temperature setting 80 C Advice: Install on/off timer so that it is definitely OFF during the night 11

12 Butchery Temperature set at 14 C (57 F) After work: 10 C (50 F) Advice: Raise to shop temperature after work hours. Advice: Lower the temperature in the surrounding shop. 12

13 Action: Adjust the temperature in the butchery f = 46 % Week before Action Week after 13

14 Action: Lower the temperature in the shop Before: T_ = 19.4 C (66.9 F) After: T_ = 19.1 C (66.4 F) 14

15 Calculator: Lowering indoor temperature 1 degree saves 8.8 % 15

16 COOLERS, FREEZERS, HOT WATER 16

Bottle coolers 9 display coolers Timer ON: 07 18 Advice: Tweek

17 Bottle coolers 9 display coolers Timer ON: Advice: Tweek to a shorter ON period Advice: Raise low temperature to 9 C 17

18 Nightly setback The temperature inside was measured with a datalogger (Lascar EL-USB-2+). The timer switched OFF just after 18:00 and ON after 7:00 the following morning. The timer saves 13 %. 18

19 Datalogger: temperature and humidity Lascar Easylog USB-2+, 90 EUR, accuracy ±0.3 C 19

20 Calculator: Temperature setback in a bottle cooler 20

21 LIGHTS 21

Levels of illumination Location Measured [lx] EU norm [lx] Coolers 700 300 Between rows 550

22 Levels of illumination Location Measured [lx] EU norm [lx] Coolers Between rows Freezers Cash area (1000 i Germany) Handheld lux meter (Testo 540). 22

23 Lights Advice: Lower average illumination from 650 to 550 lux Advice: Remove one tube from each luminairy, they are very close together Comment from manager: bright lighting is very important 23

24 VENTILATION 24

25 The ventilator disturbs the temperature in the butchery. Close the door, switch off after use. Before Action After 25

26 Note about ventilation If the ventilator speed is lowered to 1/2, then the electric consumption will be (1/2) 3 = 1/8. Therefore: small change, large effect! Advice: Avoid full speed, and do remember to switch off after use. 26

27 Learning opportunites Informal 1-to-1 teaching Classroom teaching Online calculators (da, en, fr) Online handbook (en, sv) Online self-study course (en)

28 DATA 28

Publicly accessible database (BBR) Built 1991 1594 m2 total (135 m2 office +

29 Publicly accessible database (BBR) Built m2 total (135 m2 office + personnel) Distric heating 0 shower rooms, 3 toilets Kitchen Goods reception: 334 m2, unheated 29

30 Other data Shop area 1221 m 2 Average outdoor temperature during the heating season 6.4 C Average outdoor temperature during the cooling season 17 C 30

31 Estimated energy balance 31

32 What is the price of the first saved energy unit? Electric, with tax: 1.8 DKK/kWh Electric, without tax: 1.5 DKK/kWh Electric, without tax, without fees: 1.2 DKK/kWh Distric heating, without tax: 640 DKK/MWh Water, without tax: 68 DKK/m3 32

Control unit settings for heat pump Superbrugsen Indstillinger af temperaturstyring (Lennox) Slagter Før Nu Start A: 06:00 06:00 ma-fr - B, C, Uno 18:00 14:00 ma-on - B, C, Uno 18:00 17:00 to-fr

33 Control unit settings for heat pump Superbrugsen Indstillinger af temperaturstyring (Lennox) Slagter Før Nu Start A: 06:00 06:00 ma-fr - B, C, Uno 18:00 14:00 ma-on - B, C, Uno 18:00 17:00 to-fr Start A: 06:00 06:00 lø - B, C, Uno 16:00 14:00 lø A,B,C, Uno 22:00 22:00 sø Zone A setpunkt gr min FA 0% 0% Zone B setpunkt gr min FA 10% 0% Zone C setpunkt gr min FA 10% 0% Zone Uno gr min FA 0% 0% Bms (?) gr min FA 10% 0% Butik Zone A: setpunkt gr Zone A: start, hverdage 06:00 07:00 Zone B, C, TZs: start 20:00 18:00 Zone A: start, lø-sø 07:00 øvrige zoner: start 17:00 Zone A, B, C setpunkt stop (=TZs?), setpunkt

34 Control unit settings for district heating (Siemens) Day period, remainder has nightly setback Week day, 1 = Monday Clock Manual setting of room temperature 34

35 The Night Hawks partners Coordinator: Energy Agency for Southeast Sweden Lena Eckerberg Tel: Partner Organisations Country Website Prioriterre France Severn Wye Energy Agency UK Ekodoma Latvia Samsø Energy Academy Denmark www. energiakademiet.dk Stratagem Energy Ltd Cyprus Sächsische Energieagentur SAENA GmbH Germany C.R.A.CA SOC. COOP Italy 35

Comparison of energy efficiency requirements of the energy labels and ecodesign legislations

Common appliance policy All for one, One for all Energy Labels Contract N : IEE/09/628/SI2.558219 Comparison of energy efficiency requirements of the energy labels and ecodesign legislations (Work Package