Energy efficiency with certified products

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REHVA Technical Seminar 1/ 2012 18 October 2012, Brussels Energy efficiency with certified products Sylvain

1 REHVA Technical Seminar 1/ October 2012, Brussels Energy efficiency with certified products Sylvain COURTEY Eurovent Certification Company (ECC)

2 REHVA Technical Seminar 2/ October 2012, Brussels 1. Review of existing certified energy performances 2. How to use certified energy performances?

3 3/ Energy index: Energy performances? What you get / what you expense. Ex: EER, COP, ESEER, 2. Annual energy consumption: In kwh/annum 3. Energy efficiency classes: Ex: A, B, C,

seasonal efficiencies (SEER & SCOP) Efficiency in heating mode (SCOP) depends on the climate (warm, average or

4 4/ 2012 EU energy label for residential AC Commission Delegated Regulation (EU) No 626/2011 supplementing Directive 2010/30/EU published on 4 May 2011 For cooling only and reversible residential AC up to 12 kw Based on seasonal efficiencies (SEER & SCOP) Efficiency in heating mode (SCOP) depends on the climate (warm, average or cold) Label to be applied from 1st January 2013 Certified performances available at in Jan 2013

For residential ventilation units with fan power input <125 W or

5 5/ 2012 EU energy label for residential ventilation units Draft commission working document (10 Oct 2012) Publication in 2013? For residential ventilation units with fan power input <125 W or ESP<100Pa Based on Specific Energy Consumption classes (SEC) Label to be applied from 1st January 2015?

6/ 2012 ECC energy label for chillers and heat-pumps Eurovent energy classes available since 2004 Rating system was changed in 2011 according to EN14511:2011 Take into account the proportional heat

6 6/ 2012 ECC energy label for chillers and heat-pumps Eurovent energy classes available since 2004 Rating system was changed in 2011 according to EN14511:2011 Take into account the proportional heat given off from fans and pumps: pressure drop in the HE is taken into account (system approach) Different from the US approach (AHRI 550/590) for which only the thermodynamic efficiency is considered (gross performances)

7 7/ 2012 ECC energy label for chillers and heat-pumps Pc gross without integral pump Pc acc. EN14511:2011 Pump contribution in the unit =(Qv* p)/η Pump contribution to the ductwork =(Qv*ESP)/η EER EN14511: % (±6) * EER gross COP EN14511: % (±10) * COP gross (source:

8 8/ 2012 Seasonal efficiency for chillers: ESEER ESEER=0.03*EER100%+0.33*EER75%+0.41*EER50%+0.23*EER25% Lot 6: Air-conditioning and ventilation systems Air conditioning systems Final report of Task 7 (July 2012)

9 Air handling units 9/ 2012 Interrelationships to evaluate the energy efficiency of AHU are complex and even depend on climate conditions One single letter to represent balanced effects of: Air velocity in the fan section (V) Heat recovery efficiency and pressure drop (η) Fan efficiency (f)

10/ 2012 Air handling units Three classifications for three subgroup of products: Design outdoor temperature < 9 C (HRS will significantly save energy) Design outdoor T > 9 C : N Single extract units

10 10/ 2012 Air handling units Three classifications for three subgroup of products: Design outdoor temperature < 9 C (HRS will significantly save energy) Design outdoor T > 9 C : N Single extract units : h Six classes from A to <E: CLASS All Units Velocity Units for full or partial outdoor air at design winter temperature 9 C Heat recovery system Absorbed power factor v class [m/s] η class [%] Δp class [Pa] f class Pref [-] A / AN / Ah B / BN / Bh C / CN / Ch D / DN / Dh E / EN / Eh <E / <EN /<Eh No calculation required No requiremen t

11 11/ 2012 ECC energy label for Fan Coil Units Available since 2011 First energy label for FCU in the world! Weighted average of performance of low, medium and high speeds FCEER 5% Pc 5% Pe( c) high high 30% Pc med 30% Pe( c) med 65% Pc low 65% Pe( c) low 5% Ph FCCOP 5% Pe( h) high high 25% Ph Consider both sensible and latent capacities Certified data available at: med 25% Pe( h) med 70% Ph low 70% Pe( h) low

12 12/ ECC energy label for Fan Coil Units Others Variable speed fan G F E D C B A Classes A and B only achieved by variable speed fan units

13 13/ 2012 ECC energy label for Air Filters Available since 2011 First energy label for air filters in the world! Based on average pressure drop measured during an EN779 test Estimated annual energy consumption in kwh/year is given Where qv = m³/s ; t = 6000 h and η = 0.50 Certified data available at:

14 14/ 2012 ECC energy label for Air Filters Filter class G4 M5 M6 F7 F8 F9 MTE MTE 35% MTE 55% MTE 70% M G = 350 g ASHRAE M M = 250 g ASHRAE M F = 100 g ASHRAE A kwh kwh kwh kwh kwh kwh B > 600 kwh 700 kwh > 650 kwh 780 kwh > 800 kwh 950 kwh > 1200 kwh 1450 kwh > 1600 kwh 1950 kwh > 2000 kwh 2500 kwh C > 700 kwh 800 kwh > 780 kwh 910 kwh > 950 kwh 1100 kwh > 1450 kwh 1700 kwh > 1950 kwh 2300 kwh > 2500 kwh 3000 kwh D > 800 kwh 900 kwh > 910 kwh 1040 kwh > 1100 kwh 1250 kwh > 1700 kwh 1950 kwh > 2300 kwh 2650 kwh > 3000 kwh 3500 kwh E > 900 kwh 1000 kwh > 1040 kwh 1170 kwh > 1250 kwh 1400 kwh > 1950 kwh 2200 kwh > 2650 kwh 3000 kwh > 3500 kwh 4000 kwh F > 1000 kwh 1100 kwh > 1170 kwh 1300 kwh > 1400 kwh 1550 kwh > 2200 kwh 2450 kwh > 3000 kwh 3350 kwh > 4000 kwh 4500 kwh G > 1100 kwh > 1300 kwh > 1550 kwh > 2450 kwh > 3350 kwh > 4500 kwh Energy efficiency only defined for filters fulfilling minimum discharge efficiency given in EN779:2012 Method described in Eurovent 4/11 available at:

15 15/ 2012 ECC energy label for Air Filters Important notice: Filtration efficiency shall be chosen before Energy efficiency! 1. Targeted indoor air quality shall be defined 2. Filters shall be chosen according to international guidelines (e.g.: EN13779): 3. Energy efficiency shall be defined according to Eurovent 4/11

16 Overview of energy labels & performances for HVAC products Res. 16/ 2012 Product AC<12kW Vent. units ? MEPS Energy performances ? 2015? Description (S)EER, (S)COP SEC Boilers/HP 2015? 2015? 1995 (HP) η s Chillers/HP ? 1995 (S)EER, (S)COP, ESEER Non Res. Fans VRF Rooftops AC>12kW AHU Fan Coils? 2010? ? 2015? 2015? 2015? η (S)EER, (S)COP (S)EER, (S)COP (S)EER, (S)COP f(v,η, p,f) FCEER, FCCOP Air Filters An. En. Cons HEx R

17 Res. 17/ 2012 Products AC<12kW Vent. units Boilers/HP Chillers/HP Overview of energy labels & performances for HVAC products Energy performances MEPS Residential products: Complementarity beween market surveillance and voluntary certification Non Res. Fans VRF Rooftops AC>12kW AHU Fan Coils Air Filters HEx Non Residential products with high energy? saving potentials: EU MEPS (push) and voluntary labels (pull) (Exception with Fans)? Other Non Residential products: only voluntary certification (driven by the market)

18 REHVA Technical Seminar 18/ October 2012, Brussels 1. Review of existing certified energy performances 2. How to use certified energy performances?

19 19/ 2012 French building energy regulation RT 2012 How does it work? o o o Computerized building simulation tool Heat transfer calculation on an hourly basis Need to be fed with HVAC products characteristics Examples of inputs o o Efficiencies of cooling/heating generators Heat recovery efficiency

20 20/ 2012 French building energy regulation «RT 2012» Cooling/heating generators Efficiencies are required as inputs (e.g.: COP for heat-pumps) Four levels of performances are considered Efficiency (EER, COP) is: Certified by a certification body accredited according to EN45011 Justified by a laboratory accredited according to ISO17025 Self declared Not available Value considered in the simulation tool 100%*Declared Value 90%*Declared Value Min (80%*Declared Value, Default Value) 80% * Default Value

21/ 2012 French building energy regulation «RT 2012» Ventilation: Heat recovery efficiencies are required as inputs (in %-point) Three levels of performances are considered: Efficiency of the

21 21/ 2012 French building energy regulation «RT 2012» Ventilation: Heat recovery efficiencies are required as inputs (in %-point) Three levels of performances are considered: Efficiency of the heat-recovery system is: Certified by a certification body accredited according to EN45011 Justified by a laboratory accredited according to ISO17025 Self declared Value considered in the simulation tool 100%*Declared Value 90%*Declared Value Min (80%*Declared Value, Default Value)

22 22/ 2012 White certificates French white certificate scheme (Certificat d Econome d Energie CEE) o o o By law energy suppliers are obliged to help their customers to save energy. «Saved energy» is the number of kwh saved over the lifetime of the product / equipment generating the savings. Standard operations are defined by public authorities

23 23/ 2012 White certificates Example of standard operation for Fan Coil units (BAT-TH-43) o o o o Refurbishment of old FCUs by new ones In tertiary buildings with heated and/or cooled surface < 5000 m² New FCUs shall be Eurovent class A Certified by Eurovent or a certification body accredited according to EN45011 or justified by independant laboratory accredited according to ISO17025

24 24/ Other fiscal incentive initiatives The Netherlands Government Capital Rebate programme for Air Handling units with certified A product Spain Government incentives for High Efficiency Refrigeration Display Cabinets (Energy Class A & B only)

25 25/ 2012 Where certified data can be used? Local tax incentives National implementation of EPBD Building energy labels Green public procurements White certificates

26 26/ 2012 Conclusion and perspectives EU MEPS and voluntary energy labels work together (push and pull) Energy labels for HVAC products are a powerful marketing tool but also a useful regulation tool In all cases, the best practice is as follows: 1. Good design (avoid oversizing) ask for certified performances 2. Good energy efficiency ask for certified A class

27 27/ 2012 Thank you for your attention

Certified Energy Efficiency.

Certified Energy Efficiency. Air handling units always boast up-to-date energy efficiency labels: In accordance with the AHU-Guideline 01 of the German AHU-Manufacturers Association or according to the