CO2-technology reliable, easy and efficient. Andreas Meier

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1 CO2-technology reliable, easy and efficient Andreas Meier

CO2-Technology reliable, easy and effizient CO2 is a natural refrigerant CO2 is an efficient refrigerant CO2 shows its performances in nothern and southern regions CO2 can

2 CO2-Technology reliable, easy and effizient CO2 is a natural refrigerant CO2 is an efficient refrigerant CO2 shows its performances in nothern and southern regions CO2 can be even more effectiv by using technologies like EVALIFT or ejectors CO2 technology is sophisticated à But keep it simple! Installers and engineers have to be trained on CO2

3 ChinaShop 2018 copy of TEKO EVALIFT

5 Installed TEKO Units 100% 75% 50% 25% 0% F-gas CO2

6 Technical comparison 1996: Dispack 1 (R404A) 2017: ROXSTAcube mini (R744)

7 Technical comparison 1998: Multilevel-Pack (R404A) 2016: ROXSTAsmart (R744)

8 Switch over to natural refrigerants how does TEKO supports you? WURM hotline System hotline (refrigeration/ Heating, electronic controll, Inverter, Bus-Systems) Data communication / Analysis Trainings Support After sales

9 CO2 engagement for over 10 years! TEKO test & training centre Since 2007 test supermarket New technologies Transcritical CO2 unit for test and training purposes

10 CO2 engagement for over 10 years! 2004: First subcritical CO2 units for food trade 2006: First transcritical systems CO2 development and support team more than 10 technicians and engineers Over 300 specialists are trained in CO2 every year

11 TEKO offers Competent consulting Quality Made in Germany Well-fitting components Comprehens ive controll system Trainings

12 Future-proof technology ROXSTA CO2-booster-series 2, kw RANSTA propane-chiller 3, kw AMMON NH3-rack units kw

13 Series production at TEKO 5,000 machine units per year Many years of experience in transcritical CO2 units System solutions for every field of application High degree of hermeticity Short delivery times TÜV-compliant unit technology

14 ROXSTA concept. 6 variants for different applications. ROXSTAair Up to 17 kw ROXSTAcube mini Up to 50 kw ROXSTAcube Up to 70 kw ROXSTAsmar t Up to 150 kw ROXSTA2.0 Up to 345 kw ROXSTAindus trial Up to 570 kw

15 ROXSTA2.0 CO 2 -rack unit up to 340 kw Medium refrigeration/ Medium and low temperature refrigeration Heat recovery / Heat pump / air conditioning Parallel compression / EVALIFT / TEKOJET Modular design intermediatepressure station can be separated

16 What is EVALIFT? EASY! English: EVAporation + LIFTing TC This is achieved by installing a controllable heat exchanger in front of the compressor entry with realtime superheating control at all refrigeration points. (WURM) 9

17 Effects Power effort without EVALIFT Power effort with EVALIFT

18 Energy savings Increase efficiency More useable surface in the evaporator Increase t E up to 3-6 K 4% per K more efficiency 3 K à approx. 12% 6 K à approx. 24 % Amortization period < 3,5 years Worst Case

19 Annual energy demand per year kwh ~ 20% energy saving C with EVALIFT without EVALIFT

Improving the operational safety Higher system stability through more stabilized operation Monitoring and achieving of an optimal suction gas condition at the

20 Improving the operational safety Higher system stability through more stabilized operation Monitoring and achieving of an optimal suction gas condition at the compressor entry (best operating condition for a long service life) Improved oil balance Minimized compressor oil splashing No additional oil shift Better oil return

21 EVALIFT - the simple alternative for discounters? Medium temperature: 55 kw / Low temperature: 2.5 kw Cost / technology Standard Booster EVALIFT Energy consumption (kwh/a) Energy saving (kwh/a) Electricity cost-saving ( /a) More investment ( ) Amortization (years) 3,42

22 EVALIFT - the simple alternative for supermarkets? Medium temperature : 80 kw / Low temperature: 16 kw Cost / technology Standard Booster EVALIFT Energy consumption (kwh/a) Energy saving (kwh/a) Electricity cost-saving ( /a) More investment ( ) Amortization (years) 2,61

23 EVALIFT - the simple alternative for hypermarkets? Medium temperature: 130 kw / Low temperature: 50 kw Base: MT/LT-booster incl. parallel compression Cost / technology EVALIFT Gas ejector Liquid ejector TEKOJET Energy consumption (kwh/a) Energy saving (kwh/a) Electricity cost-saving ( /a) More investment ( ) Amortization (years) 2,13 4,04 4,02 2,63

24 Parallel compressor PC 3 Parallel compression of a higher suction pressure level Increased efficiency due to smaller rp compared to MT compressor operation 6 TC Dimensioning not to max. power ( Annual evaluation) Investment only economically useful at higher cooling demand

pressure difference of transcritical CO2 technology Enables

25 TEKOJET Ejector inside refrigeration system High pressure Medium pressure Low pressure Uses positively the high system pressure difference of transcritical CO2 technology Enables mass flow shift to parallel compressor without additional energy input

26 Practical evaluation 17 hypermarkets in comparison 3 TEKO projects 2 TEKO projects with EVALIFT and TEKOJET

27 Project Ø T0 MT Ø T0 LT St. Pölten Leipzig Cologne Dresden Neustrelitz Berlin Gomaringen Leverkusen New-Ulm Chemnitz Neumünster Koblenz Sulzemoos Geestland Saarbrücken Neuss Hof EVALIFT + TEKOJET EVALIFT + TEKOJET CO2 Booster incl. ECO

28 We can very easily raise the evaporating temperature around 3 K (without any technical efforts). With some effort in planning, start-up and in the first year of operation, a further increase of the evaporating temperature is possible. Simon Ahlers, TEKO Product manager CO2 PATENT PENDING

29 Energy costs per year in Munich (Germany) Energy costs (EUR) Yearly temperatures C * hours CO2 incl. EVALIFT CO2 R404A

30 Energy costs per year in Bangkok (Thailand) Energy costs (EUR) Yearly temperatures C * hours CO2 incl. EVALIFT CO2 R404A

Multi Ejector Solution Transcritical CO 2 refrigeration systems in all climates

Multi Ejector Solution Transcritical CO 2 refrigeration systems in all climates Mark Sever, Technical Manager 1 Danfoss Cooling Multi Ejector Solution The CO 2 development First, second, and third generation