Adopting a low energy AND low water consumption approach - - PowerPoint PPT Presentation

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Indirect Adiabatic Cooling

Journeying toward a PUE of 1.2 or under? Adopting a low energy AND low water consumption approach

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Meet Jon Pettitt

Jon Pettitt is Excool’s Chief Commercial Officer a highly experienced, successful and well-regarded business leader within the global data center Industry. Jon has over 15 years of specialising in data center cooling solutions and energy efficient systems for mission critical facilities. Previous to Excool

8 Years @ Munters Vice President of data centers for EMEA & APAC, 14 Years @ Johnson Control / York .

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Previous Experience

Clients

28

Sites

51

Units

826

MW of Cooling

230+

Years

10

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2020

• Low energy consumption
• Strict restriction on water consumption
• Space for installation is a premium
• Remove risk of air contamination
• Average data center 10MW +

2010

• Low energy consumption
• No restriction on water consumption
• Plenty of space for installation
• Remove risk of air contamination
• Average data center between 1-5MW.

Our changing world

Typical IDEC Arrangement

Shows 4 storey install with units side-by- side and shaped ductwork to allow air to ‘percolate’ between ducts and through

• pen mesh floors.

Typical IDEC Arrangement

Typical IDEC

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How it Works

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Average Heat exchanger entering condition 67°F 62% RH 60°F

Dallas TX - Average

97°F 75°F

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Dallas Peak Heat exchanger entering condition 110°F 36% RH 83°F

Dallas TX - Peak

97°F 75°F

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Why Indirect ?

HEAT EXCHANGER - Indirect

HEAT EXCHANGER - Indirect

AIRBORNE DUST Server failure modes due to dust include but are not limited to the following (ASHRAE 2009b): Mechanical effects. Mechanical effects include

• bstruction of cooling airflow, interference with moving

parts, abrasion, optical interference, interconnect, interference, or deformation of surfaces (e.g., magnetic media) and other similar effects. Chemical effects. Dust settled on printed circuit boards can lead to component corrosion and/or to the electrical short circuiting of closely spaced features. Electrical effects. Electrical effects include impedance changes and electronic circuit conductor bridging.

Example of copper creep corrosion on a lead-free circuit board

www.excool.com IT Power Provision Cooling Electrical Losses Chilled Water, direct air, DX and pumped refrigerant

The largest energy consuming element apart from the IT load is the Compressor!!

SOLUTION – reduce dependency on mechanical cooling

Where does the power go?

DATACENTER Efficiency

IDEC

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Item IDEC Chilled Water Direct Air Pumped Refrigerant Mechanical Cooling Partial Full Full Full Complexity Simple Complex Complex controls Complex controls Single points of failure to address Low High Low Low BMS points Low High Low Low Installation costs Low High Low Low Operating Costs Low High Low High Maintenance costs Low High High High Water Consumption vs air cooled Low/Zero Low NA NA Water Consumption vs water cooled Low/Zero High NA NA Water Consumption Low/Zero Dependant on humidity requirements None Potential for contaminant ingress None None High None Re-start time Fast Fast Slow Slow

IDEC Comparison

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Reduction in Water Consumption

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Modes of operation allow unit to be adapted to local conditions for most efficient OPEX

Mode 1 Free-cooling Fan Only

Modes of Operation

Mode 2 Adiabatic Fan Pump Mode 3 Adiabatic + Mech Cool Fan Pump Mech Cool Mode 4 Mech Cool + Adiabatic Fan Pump Mech Cool Mode 5 Mech Cool Fan Mech Cool

Performance Example

Typical operational data for a 1MW data hall. Based on 75°f supply air temp, 95°f return air temp, 75% average annualized demand and N+1 resilience

Location Energy Priority Mode pPUE Water Priority Mode pPUE Atlanta 1.064 1.079 Chicago 1.048 1.059 Dallas 1.074 1.105 San Jose 1.043 1.058 Ashburn 1.057 1.071 Location Energy Priority Mode WUE l/kWh Water Priority Mode WUE l/kWh Atlanta 0.200 0.084 Chicago 0.160 0.054 Dallas 0.330 0.186 San Jose 0.260 0.053 Ashburn 0.190 0.084

Choose an IDEC unit that can accept water with hardness as calcium carbonate in milligrams per litre of Up to 250mg/l, For areas of water hardness above 250mg/l we would recommend some pre-softening of the water. Typically unless the customer is on bore hole water with exceptionally high hardness softeners should not be require as in the US hardness is usually below 250mg/l. (see map)

Water hardness

Integrated System and Software Water quantity Frost control Water storage

Auto drain down Auto purge Biological Filter Anti scale system

3 modes of operation to fully utilise all water available No adiabatic cooling required in winter so no risk of freezing. Water storage included.

Integrated Water Treatment

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Reduction in Expenditure

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IDEC Chilled Water $0 $50,000 $100,000 $150,000 $200,000

IDEC Chilled Water

Tariff kW/hr = $0.10c 100 US Gallon = $0.94

1MW Data Center Cooling Approximate Operational Costs

Values are indicative and for comparative purposes only Costs include for water and energy consumption and maintenance Utility costs based on local commercial rates All based on 1MW IT provision operating at annualised IT utilisation of 75% Supply at 75°F, return at 97°F

Annual Operational Cost Saving*

* Indicative costs from comparison purposes only

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* Location – Portland, OR

UPS

Chilled water – 475kW Direct air – 500kW IDEC – 275kW

Electrical infrastructure Savings

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$0 $200,000 $400,000 $600,000 $800,000 $1,000,000 $1,200,000 Free Cooling Chillers IDEC

Hydraulics Chillers

Values are approximate and for comparative purposes only. Costs may vary depending upon data center design, equipment specification and selection and site conditions

CRACs

1MW Data Center Cooling Approximate Capital Costs

Additional Electrical Infrastructure BMS

IDEC

Capital Cost Savings

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Summary

• 1. Lower Total Cost of Investment

i. Reduced Capital Expenditure ii. Reduced Operational Expenditure (Energy & Water)

• 2. Faster Return on Investment

i. Decentralised system ii. IDEC growth matches IT growth iii. Additional revenue for lower capital iv. Reduced footprint

• 3. Improved Resilience

1. Predominantly fans and pumps 2. FELXIBILITY in modes of operation 3. No complex pipework and controls

• 4. No Contamination risk

i. Outdoor air stays outdoors!

THANK YOU FOR TIME

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