High Efficient Data Center Cooling
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- Karen Hampton
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1 Nordborg High Efficient Data Center Cooling Copenhagen Center on Energy Efficiency webinar 12. July 2017 Jörg Saar, Danfoss Cooling 1 Danfoss Cooling
2 Contents 1. Short intro to Danfoss Cooling 2. Introduction Server Room Cooling Sizes / capacities Control parameters temperature & humidity 3. Energy efficiency improvement option example Free cooling Compressors Fan & pumps 2 Danfoss Cooling
3 Danfoss Cooling to address global challenges Sustainable Cooling Cold Chain Energy Storage Refrigerants and Energy Efficiency 3 Danfoss Cooling
4 Sustainable Cooling 38% of the emissions reduction needed to keep the planet within the 2 degree increase scenario by /3 of CO 2 emissions are produced by buildings 60% reduced carbon footprint with natural refrigerants 30% potential for CO 2 emissions reduction by 2030 (EU) Solutions for a more sustainable outdoor climate Smart buildings Refrigeration Renewables 4 Danfoss Cooling
5 Data Center Cooling High cooling loads => High savings potential Small sized server room Typical cooling load 3-25 kw Medium sized data centers Typical cooling load 200 kw 1 MW Larger server rooms & small data centers Typical cooling load kw Large data centers Typical cooling load > 1 MW 5 Danfoss Cooling
6 Anwendung Data Center Cooling Temperature Remove heat from electronic components (server) Max operating temp of electronic components Lower temperature = longer lifetime Temperature too high = server down = no go! 6 Danfoss Cooling
7 Anwendung Data Center Cooling Humidity Dry air supports generation of higher electric potential. Electro-static shock can heavily damage electronic components 7 Danfoss Cooling
8 Data Center Cooling Since 2011: Classes A1 and A2 apply to new and legacy equipment (same as 2008) New Classes A3 and A4 do NOT include legacy equipment Many data center operators use small red area only Supply Air ASHRAE Psychometric Chart Danfoss Cooling
9 Data Center Cooling Free cooling Simplified example Only ambient air to cool data center Only energy for air fans needed. No energy for other cooling systems needed Challenges : Only possible when ambient air temperature is low enough keep contamination (dust, chemicals in the air) out Warm air out Cold air in 9 Danfoss Cooling
10 Cooling unit Data Center Cooling Free cooling Simplified example Ambient air to cool data center via cooling units connected to a chiller with free cooling Free cooling when ambient air is cold enough Energy for compressor cooling only for high ambient temperatures No contamination (dust, chemicals in the air) in the data center Chiller with free cooling 10 Danfoss Cooling
11 Data Center Cooling Free cooling Only cold ambient air to cool water Compressor cooling For warm ambient Chiller with free cooling 11 Danfoss Cooling
12 Data Center cooling Free cooling Example for savings potential 12 Danfoss Cooling
13 Data Center cooling Additional improvement potential Example compressors Free cooling Only cold ambient air to cool water Compressor cooling For warm ambient Chiller with free cooling 13 Danfoss Cooling
14 Data Center cooling Scroll compressor with IDV IDV = Intermediate Discharge Valve Typical operating area data center cooling Danfoss DSH compressor series 14 Danfoss Cooling
15 Data Center cooling Alternative Inverter driven compressors VZH Inverter driven compressors for optimal free cooling adaption 15 Danfoss Cooling
16 Data Center cooling Inverter driven compressors VZH Inverter driven compressors for optimal free cooling adaption 16 Danfoss Cooling
17 Power consumption Data Center cooling Inverter for fans & pumps 100% Danfoss VLT Drive Fan or pump speed On/Off 17 Danfoss Cooling
18 Power consumption Small reductionin speed Data Center cooling Inverter for fans & pumps 100% Large savings Danfoss VLT Drive Fan or pump speed On/Off 18 Danfoss Cooling
19 Power consumption Small reductionin speed Data Center cooling Inverter for fans & pumps 100% Large savings Danfoss VLT Drive Fan or pump speed On/Off 19 Danfoss Cooling
20 Data Center cooling Example: 35 kw cooling unit for data center Fix spped compressor replaced by inverter driven varibale speed compressor VZH088. Saving : approx kwh/year. = 32% compared to fix speed Inverter driven compressors fans & pumps Danfoss VLT Drive Return on investment often< 3 years. Additional benefits : 70% lower starting current Lower load on electric grid Smaller back up generators VZH Inverter driven compressors for optimal free cooling adaption 20 Danfoss Cooling
21 High efficient Data Center Cooling Inverter driven compressor Inverters for fans & pumps High efficient heat exchangers Free cooling Only cold ambient air to cool water Compressor cooling For warm ambient Chiller with free cooling 21 Danfoss Cooling
22 Sustainable Cooling 38% of the emissions reduction needed to keep the planet within the 2 degree increase scenario by /3 of CO 2 emissions are produced by buildings 60% reduced carbon footprint with natural refrigerants 30% potential for CO 2 emissions reduction by 2030 (EU) Solutions for a more sustainable outdoor climate Smart buildings Refrigeration Renewables 22 Danfoss Cooling
23 Many thanks for your attention
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