Commonly used calculations in data centers

This mind map of commonly used calculations in data centers summarizes the knowledge of electrical, HVAC, weak current, and energy consumption indicators. I hope this mind map will be helpful to you.

Edited at 2023-07-28 16:05:15

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Commonly used calculations in data centers

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Outline

Commonly used calculations in data centers

一、 electric

1. Diesel generator backup time calculation

P*(0.21 to 0.24)*X(?)=L*ρ*Q P: load power 0.21 to 0.24: Indicates that one kilowatt hour of electricity consumes 210 to 240 grams of diesel. L: is the capacity of diesel fuel Ρ: is the density of diesel Q: is the power generation coefficient of the generator

2. Battery backup time calculation

1||| ups

2||| HVDC

3. Horizontal oil tank volume calculation

4. Cable diameter carrying capacity selection

Multiply two point five by nine, subtract one when going up and go straight; Thirty-five is multiplied by three point five, and when pairs are in a group, point five is subtracted; If conditions change, additional discounts will be applied, and copper upgrades at high temperatures will be 10% off; The number of threaded pipes is 2, 3, 4, and the full load flow is 876% off.

5. Energy conversion standard coal

1||| Table A1: Reference coefficients for converting various energy sources into standard coal

2||| Table A2: Average conversion heat table of energy-consuming working fluids

二、 HVAC

1. Cooling tower evaporation calculation

1||| E Evaporation capacity = (temperature difference/latent heat ratio) * water treatment capacity

2||| T=W/E {T backup time; W reservoir capacity

2. Computer room heat load calculation

1||| Data Center Heat Calculation

2|||

3. Circulating pump

1||| power

2||| flow

3||| Lift

4. Cooling capacity calculation

1||| Cooling machine dimension

Cooling capacity = rated cooling capacity of the chiller * current %

2||| Traffic dimension

Cooling capacity = water flow rate * temperature difference between supply and return water * coefficient (1.167)

三、 Weak current

1||| Storage space=(code stream*3600*24)/(8*1024*1024)

https://support.dahuatech.com/tools/onlineTools/19

四、 Energy consumption index

1||| PUE

2||| WUE

WUE is Water Usage Effectiveness (WUE). WaterUsage Effectiveness represents the parameter of data center water utilization efficiency. This indicator is expressed as the ratio of the total water consumed by all water-using equipment in the data center to the total electric energy consumed by all IT information equipment.