Hello everyone, I'm Brother Xue. In recent years, there have been a lot of modular computer room projects, some people may have been contacted, some people have not been contacted, for the modular computer room project, we must master it, because I will also encounter future projects. Today, I will share a set of modular computer room construction plan, you can refer to it.
1. Introduction to the modular data center computer room system
The modular data center computer room solution is the mainstream and leading application solution in today's industry, which is widely used in large, medium and small computer rooms in various industries, and is highly recognized by industry experts and users. It also spoke highly of its convenience, scalability, low operating costs (energy-saving and efficient), high manageability, and neatness and beauty.
This project takes into account specific factors such as the layout of the computer room, the number of cabinets, and the convenience of subsequent expansion, and supports online expansion without power failure and avoids secondary engineering and construction, energy saving and saving operation and maintenance costs, the overall beauty and cleanliness of the solution, good compatibility, and avoids problems such as ripping and unclear fault interface due to equipment damage from different manufacturers during maintenance.
2. Technical solutions for modular data center computer rooms
2.1 Project overview and demand analysis
The machine room adopts a complete modular scheme of standard double-row cabinet type, and adopts water-cooled inter-row air conditioning and closed cold aisle. In view of the bidding scope of this modular data center, the modular data center computer room solution includes the following subsystems:
1] Closed channel subsystem (including skylight control and fire linkage system)
2] Cabinet subsystem
3] Air conditioning subsystem
2.2 Modular data center room design concept
2.2.1 Design principles of modular data center computer room
Wholeness
The construction of the computer room includes a number of majors, and there are inextricable links between each specialty, so it is necessary to consider the whole and start from the overall situation in order to make the various specialties coordinate and integrate together.
reliability
High reliability design standards are adopted to provide a stable and reliable basic environment and design for applications.
safety
Effective measures should be taken from the aspects of fire prevention, waterproofing, anti-theft, grounding, lightning protection, anti-electromagnetic interference, noise reduction, etc., and special technical measures such as ground load-bearing capacity should be considered.
Advanced and practical
Under the premise of satisfying reliability, advanced and practical technology, equipment and materials are adopted.
Ease of management and maintenance
It is convenient for the staff to centrally manage the environment and the equipment placed, and it is convenient for maintenance and repair.
Scalability
Each system must have flexible system expansion and upgrade capabilities.
Environmental protection and energy saving
All use nationally recognized environmentally friendly materials, and the design scheme should reflect the idea of energy saving.
2.2.2 Design objectives of modular data center computer room
The construction of data center infrastructure is a comprehensive project with the main purpose of ensuring the safety and reliability of equipment operation, which includes four major systems: electrical system, air conditioning system, monitoring system, and cabinet system. Its objectives are:
1) Ensure the reliability of computer equipment
2) Ensure the safety of the operation of the computer room
3) Extend the service life of computer equipment
4) Meet the special requirements of users
5) Ensure the physical and mental health of the venue staff
The design of the modular data center computer room is carried out around these fundamental tasks, in the design process of the use of advanced design ideas and advanced technology, and focus on the future development, the organic combination of various systems, through the use of high-quality materials, reasonable configuration and advanced technology to ensure the realization of environmental indicators, for computer equipment and staff to create a safe, reliable, relaxed, comfortable working place.
2.2.3 Modular data center computer room design basis
The design of the modular data center system needs to comply with the following criteria:
National & Industry Norms:
The modular data center computer room adopts cold aisle sealing, and the structural bracket unit frame is assembled on site, and the channel bracket can be quickly assembled on site, and the supplier ensures the stability of the bracket as a whole.
2.3 Modular data center computer room configuration
Referring to the design requirements, in response to the above requirements, we have designed a professional integrated data center micro-module system for your company. For the bidding scope of this modular data center computer room, this solution includes the following subsystems:
1] Closed channel subsystem (including skylight control and fire linkage system)
2] Cabinet subsystem
3] Supply and distribution electronic system
4] Air conditioning subsystem
2.3.1 Design and layout of modular data center computer room
The layout adopts the overall computer room solution, and arranges a set of all-in-one data center micro-modules that have been designed in a targeted manner. Each module includes a cabinet subsystem, an air-cooled air conditioning subsystem between rows, an electronic system, a cold aisle closure subsystem, and supporting fire protection components.
The modular data center computer room uses a variety of designs and technologies to improve the energy efficiency level of the data center, and the energy saving effect is obvious. The use of cold aisle closure and isolation greatly improves the efficiency of the air conditioning system to nearly 100% for the utilization of cold capacity by rack servers, which can effectively reduce PUE.
2.3.1.1 Design and layout of modular data center computer room
l Calculation of cooling capacity demand:
Qt = Q1 indoor equipment load + Q2 ambient cooling load
=3kW*20*70%（同时使用系数）+178m2*0.15kW/m2
=42kW+26.7kW=68.7kW
It is recommended to use 4 sets of water-cooled 27.2kW inter-row machine room special air conditioners with the same cabinet size, which can provide a total of 108.8kW cooling capacity, and can provide 3 main and 1 standby refrigeration system, with an air conditioning size of 600mm wide * 1200mm deep * 2000mm high, which is completely consistent with the cabinet size, beautiful and generous, and more coordinated and unified than the market size of 1100mm deep air conditioning units. In addition, the unit can choose power distribution heating and electric humidification to achieve constant temperature and humidity function, and the unit adopts the air supply mode of two EC fans, which has the function of cooling capacity following the load output.
Each air conditioner is equipped with a 7-inch large true color touch screen, a user-friendly operation interface, and a function of checking thousands of historical records, which is beautiful and generous.
l Cabinet subsystem
The server cabinet adopts a 600*1200*2000 high cabinet, with a load-bearing capacity of more than 1000kg, and each cabinet is equipped with a 14U blind plate, which is installed in the cabinet without equipment to avoid mixing air in the hot and cold aisles. Each cabinet is equipped with 1 set of L-shaped brackets and 2 trays for installing equipment. In addition, each cabinet is equipped with two horizontal cable management racks for cable management.
l Cold aisle subsystem
The closed passage adopts the attached cabinet structure, and according to the requirements, it is equipped with 6 600mm*1200mm fixed sunroofs, and 6 600mm*12000 reversible skylights, with the fire protection kit, which has the function of automatically opening the flipping skylight with the fire signal linkage. LED lights are arranged in the enclosed aisle to meet the lighting needs.
Photographs of skylights and passages of similar projects
l Control
The module is equipped with two smoke sensors and sunroof controllers, which are linked, and the sunroof will automatically open when there is a fire signal and a smoke sensor alarm.
3. Introduction of modular data center computer room system
3.1 Modular data center computer room - server cabinet
3.1.1 Outstanding features
a. International leading heat dissipation design
Ø Front and rear "super mesh" door design
Ø High density hexagonal mesh, the opening rate is as high as 72%
ØAdapt to the design of hot and cold aisles in the data center
Ø curved door design, larger ventilation area, and beautiful and generous, in line with the aesthetic standards of modern computer room
ØThe cabinet is divided into forward air and downward air inlet modes to meet different environments and use a unique combined structure design
b. The cabinet frame adopts a combined design
Ø The side door panel adopts the upper and lower panel design and the cabinet is fixed inside, which is convenient for disassembly and assembly, and further improves the safety of the equipment
Ø Abundant options to meet the needs of various applications
Ø Compatible with flat pack transportation, reducing shipping costs by 60%.
c. Reliable power distribution design
Ø Main and standby dual output, safe and stable use
Ø A variety of power distribution solutions to meet the needs of various applications
Ø Unique remote monitoring and management, more convenient to use
d. Scientific cable management
Ø The rear adopts a special cable management channel, which is convenient for the laying, management and operation of a large number of data cables
Ø The top adopts a seamless fit between the double-channel cable duct and the cable ladder, which is convenient for cable arrangement and maintenance
3.1.2 Modular data center room-server cabinet configuration
3.2 Modular data center computer room - closed cold pool composition and characteristics
Aitenet can enclose the cold pool, which is mainly composed of the following components: glass skylight assembly, glass isolation door assembly, steel false wall assembly, fire linkage system component, environmental monitoring unit assembly.
Features:
Ø Realize the isolation of cold and hot aisles, make reasonable and effective use of cold energy, and prevent cold and hot crossing and cold loss.
Ø Changed the traditional cooling environment first, then cooling equipment, rational use of resources, save electricity.
Ø Provide a very stable working environment for the equipment.
3.2.1 Modular data center computer room - glass skylight component
Depending on the installation requirements, there are three types of sunroofs to choose from: movable sunroofs (also known as flip-out sunroofs), functional sunroofs and fixed sunroofs. In this scheme, the fire gas pipeline is located on the top of the machine room, so the movable sunroof and functional sunroof are selected.
a. Movable sunroof
When there is an abnormality inside the cold aisle, the temperature is too high or there is a fire, the skylight will automatically open, and the fire fighting gas sprayed by the fire protection system can be quickly sprayed into the inside of the channel to avoid fire.
b. Functional sunroof
It is used for the installation of power supply, temperature and humidity sensors, smoke detectors, cameras and fire linkage control units.
c. Fixed sunroof
It is suitable for installing fire gas pipelines at the bottom, when there is an abnormality inside the cold aisle, the temperature is too high or there are fireworks, the sprayed gas is quickly sprayed into the cold aisle from the bottom ventilation floor to avoid fire.
3.2.2 Modular data center computer room - glass isolation door assembly
In this design, the sliding door is selected, which is suitable for closed cold aisles on the left and right sides of the front of the cold aisle where other cabinets need to be installed. Main features: good sealing, the left and right door panels can be automatically closed.
The double door is connected with the frame by screws, and a sealing brush is installed at the lower part of the door panel to ensure the airtightness of the sealed cold aisle system. The end door is a double-open structure on the left and right, with a large area of perspective tempered glass in the middle of the door page, which is normally closed.
3.2.3 Modular data center computer room - steel false wall assembly
According to the relative position of the floor column and the micro-module closed passage, the corresponding false wall components are selected to ensure the airtightness of the passage.
The false wall is embedded in a single-row cabinet in the column of the computer room, and a steel false wall is set in the front and rear directions of the cabinet to form the passage
Closed passages, while ensuring the aesthetics of the computer room.
The false wall is embedded in the cabinet and protrudes from the cabinet, and the false wall is set in the front and rear directions of the cabinet and the width of the cabinet, so that the passage is closed.
The false wall is completely independent and fixed with the floor, and forms a closed channel with the cabinet.
3.2.4 Modular data center computer room-fire linkage system components
Power supply for movable sunroof:
The main and standby inputs provide stable voltage for the sunroof electromagnetic lock.
Technical Parameters: Input Voltage: AC 220V Output Voltage: DC 12V Maximum Output Current: 25A Maximum Output Power: 300W
Movable sunroof magnetic lock:
Lock the movable sunroof, power-on adsorption skylight, power-off skylight automatically opens
Technical parametersWorking voltage: DC 12V Rated power: ≤2.5W Adsorption force: F≥10KG (can adsorb 10KG objects with flat surface)
Movable sunroof drive system:
When the fire protection system or monitoring system provides an abnormal signal to the drive unit, the drive unit controls the sunroof to open through the relay
3.3 Technical characteristics of the air-conditioning unit of the inter-row computer room:
1. High sensible heat ratio:
The design of 100% sensible heat ratio is suitable for the application form of electronic equipment in the computer room that releases a large amount of sensible heat and is close to the equipment for cooling.
2. High energy efficiency ratio:
l High return air temperature design, heat exchange temperature difference is larger, higher efficiency
l Inter-column design, shorter airflow organization path, less power consumption of the fan, and energy saving
l The fan is designed to operate at the best efficiency point to save energy
l Adopt high-efficiency azeotropic refrigerant R410A, which has higher efficiency and energy saving
lThe system adopts a suction design, which fully ensures the uniformity of the surface wind speed of the evaporator, the heat exchange efficiency of the evaporator is increased by 10% compared with the blowing design, and the wind resistance of the system is reduced by 30% compared with the blowing structure;
l The humidified steam is directly sent to the air inlet of the fan to ensure that the wet steam is fully mixed and avoid condensation at the air outlet;
lHeating is arranged at the air inlet of the fan to ensure that the heated air flow is fully mixed through the fan to avoid local hot spots at the air outlet;
3. Advanced Microcomputer Controller:
l Advanced microcomputer control
l7 inch large touch operation screen
l User-friendly interface that is easy to operate
l It has the function of viewing temperature and humidity curve
l Accurate microcomputer control system
l Multi-level password protection to prevent misoperation
l It has the function of graphical display of running status and fault self-diagnosis
l Record the running time of each main component
l It has the function of rapid dehumidification
l Store 1,000 historical alarm messages
l It has the function of self-start and delay setting of incoming calls
l Automatic parameter protection, even after power failure, the operating parameters and alarm records can be saved
4. Powerful network management function:
l Equipped with standard RS485 monitoring interface
l Compatible with Modbus and Electricity Total, which can be selected on site
l Powerful group control function, which can realize the group control of 32 units
l Realize the functions of automatic switching, backup, rotation on duty, and avoiding competitive operation
l Convenient remote power on and off and management functions
l Remote alarm and query and remote fault handling and silencing
5. Structural design for easy operation and maintenance:
The unit has a compact structure, only a small maintenance space and floor space, a hot-swappable fan design, and front and rear door maintenance consistent with the maintenance habits of the cabinet, without side maintenance.
6. High Reliability:
The main components of the unit are supplied by well-known manufacturers at home and abroad, including high-efficiency vortex compressors, maintenance-free fans, high-precision expansion valves, etc., which are designed and manufactured in accordance with 24 hours a day, 365 days a year, and can run stably for a long time.
7. Electronically controlled control suitable for harsh power supply environment:
l Professionally designed for harsh power supply environment, the input power supply voltage adaptation range is 220V/380V±10%
l Lack of phase protection, prompt, alarm function, to avoid equipment damage caused by lack of phase
l Phase sequence detection, prompt, alarm, function, to avoid burning the compressor due to phase sequence reversal.
lIn the self-start function of incoming calls, it has a delayed start function to avoid affecting the stability of the equipment due to flash disconnection of incoming calls, or "tripping" caused by surges caused by multiple devices being turned on at the same time.
8. High-efficiency and energy-saving expansion valve as a throttling device:
The expansion valve has the characteristics of high control accuracy, good adjustment performance and high reliability. It can meet the economy and reliability of all-weather operation of the unit.
9. Large air volume and high efficiency backward tilting centrifugal direct air supply system:
lLarge air volume air supply can provide higher sensible cooling capacity and a longer air supply range, avoiding refrigeration dead corners and local hot spots in the computer room. The high-efficiency and long-life backward tilting centrifugal fan (external rotor, metal fan blade) is used to meet the all-weather operation requirements of the machine room.
l Multiple high-efficiency backward-tilting centrifugal direct-coupled fans, with redundant air volume design, each fan is designed to operate at the best efficiency point under standard working conditions, rather than at the maximum air volume point; The variable capacity system is equipped with EC fans as standard;
l The fan adopts a full-coverage layout, covering the façade of the entire unit, and the airflow organization in the machine or the inlet and outlet airflow organization are more evenly distributed, which is more conducive to improving energy efficiency and improving the refrigeration effect.
l High system efficiency can effectively reduce operating costs
-- High impeller hydrostatic efficiency
-- Optimal air inflow and outflow conditions
-- No current sharing device required
-- No transmission loss
-- Motor 0~100% speed adjustable
l Simple structure, high reliability, reduce maintenance costs:
-- Backward-sloping vane impeller, no overload
-- No belt side pull, reducing bearing load and prolonging bearing life
-- No daily maintenance and replacement of belts
-- Open structure for easy maintenance and cleaning
l Compact structure, saving installation space - reducing equipment investment
--Flexible and diverse installation methods (vertical or horizontal installation)
--Ventilation can be achieved in all directions.
10. Filter
The filter screen is a G4 grade polymer material pleated filter, which is easy to disassemble and maintain.
11. Electric Heater:
The constant temperature and humidity type adopts PTC positive temperature coefficient ceramic electric heater, which has the characteristics of positive temperature coefficient heating, which can effectively avoid overheating; And the heater is connected by high-temperature resistant cables, which can effectively avoid the aging of the cable due to high temperature, which is safe and reliable.
12. Humidifier
The constant temperature and humidity type is equipped with an electrode humidifier with automatic cleaning function, which has the characteristics of low power consumption, large humidification capacity per unit power consumption, automatic cleaning function, and simple maintenance.
13. High Reliability Outdoor Fan System:
l The fan blades are made of all-metal material, which has a longer life
l The whole motor/fan unit is very compact, light in weight, and saves installation space;
l Fans are suitable for installation in all directions (horizontal or vertical)
14. Stepless speed regulation inverter outdoor unit:
The outdoor fan adopts the frequency conversion stepless speed regulation mode, which is more energy-saving than the traditional chopper speed regulation, and can avoid the infrasound noise caused by the chopper speed regulation; The infinitely variable speed allows the equipment to adapt to changing climates.
The structural parts of the outdoor unit are made of corrosion-resistant materials, which have good rigidity and anti-corrosion performance, and are suitable for a variety of environmental conditions.
3.4 Distribution cabinet product introduction
3.4.1 Technical characteristics of distribution cabinet:
Power solutions
n Suitable for power distribution systems of 630A and below
n Support floor installation and wall-mounted installation, easy to on-site construction
n Simple main circuit and secondary circuit connection, easy to install
n High-quality and high-reliability products ensure the continuity of power supply and the durability of the system
n A variety of intelligent instruments can be selected to realize the intelligence, networking and automation of the power distribution system
Scope of application
n power plant
n substation
n Petroleum and petrochemical
n Industrial and mining enterprises
n Data center
n Government public construction
n Commercial buildings
Technical features:
Ø The power distribution cabinet is a closed, fixed-mounted cabinet type, the front door can be opened, and all the equipment in the cabinet is exposed after the door is opened, which is convenient for wiring and maintenance in the cabinet
Ø The cabinet door and the frame are connected by a removable movable hinge, which is easy to install and disassemble
Ø All primary and secondary connected copper busbars, the purity reaches 99.97%, reducing heat generation and reducing power consumption
Ø The outlet mode is flexible, and the upper and lower lines can be entered and exited
Ø In order to facilitate the incoming and outgoing lines, the inlet and outgoing wiring of the molded case circuit breaker are led out with copper bars and fixed with insulators, which is convenient for users to wiring
Ø The front door can be installed with operation buttons, indicator lights and display instruments according to requirements, which is convenient for users to operate and inquire about the operation status of the system
Ø Strong versatility, can be installed independently in a single unit, or can be installed in multiple cabinets
ØThe protection level of the cabinet is IP30, and the user can also choose between IP20~IP40 according to the requirements of the use environment
Ø The main and auxiliary circuits of the distribution cabinet adopt a standardized scheme, which can be divided into five types: power inlet, power receiving, contact, feeding and lighting according to the use
3.4.2 Characteristics of precision column head cabinet:
1. Perfect styling
Ø Completely in accordance with the IT standard cabinet design, beautiful and generous. Placed together with the server cabinet for a unified style.
Ø Effective heat dissipation.
Ø Perfect cable management.
2. Perfect monitoring system: effective management of power supply system and risk early warning
a. Bus monitoring parameters
Ø Three-phase input voltage, current, frequency
Ø Total work, active power, power factor
Ø Harmonic percentage, load percentage
Ø Electricity (can be measured monthly according to customer needs, etc.)
b. Branch monitoring parameters
Ø Rated current and actual current of the branch
Ø Percentage of branch load
Ø Branch switch status
Ø Branch power (monthly/quarterly power)
c. Alarm signal
Ø Under-voltage and over-voltage alarm of the main circuit
Ø Branch switch state change overload
Ø Branch load two-stage threshold alarm
Ø Transformer overheating alarm, etc
d. Easy integration into the computer room monitoring system
l Provide RS232/485 or SNMP a variety of intelligent interface communication methods
l All information is uploaded through one interface, the system is more reliable, saving monitoring investment
l The panel saves 1000 alarm messages, which is convenient for fault analysis
3. Advanced computing and control system: DSP digital signal processor
Ø 10-20 times faster than the traditional single-chip microcomputer, timely and accurate event processing
Ø The integration degree is improved, and the circuit is simplified
4. The shunt adopts hot-swappable adjustable phase circuit breaker, which has the strongest maintainability (optional)
Ø Load branch capacity, which can be flexibly configured according to user load requirements;
Ø Realize uninterruptible system expansion, switch replacement, re-distribution design, etc.;
Ø No need to change the cable, easy to achieve load three-phase balance, safe and reliable;
5. Anti-interference solution - isolation transformer (optional)
Ø Built-in isolation transformer can be selected to eliminate all kinds of interference
Ø Effectively solve the zero ground voltage
Ø Computer-level best grounding protection
[Electrical characteristics]
l额定电压:380V (最高 400V)
l Rated frequency: 50Hz
l Typical connection: three-phase five-wire
l Breaking capacity of feeder shunt circuit breaker: 10 kA
【Mechanical Characteristics】
1) In addition to processing the assembly surface and electroplating surface, the surface of the metal components of equipment and instruments is treated with anti-rust or spraying. Before assembly, the inner surface of the closed structure is also sprayed or treated with anti-rust treatment, and the treatment quality meets the SSPC standard;
2) The equipment cabinet is made of international general quasi-cabinet, the internal main frame of the cabinet is made of imported environmentally friendly aluminum-zinc steel plate with a thickness of more than 2mm, polyester epoxy electrostatic spraying anti-corrosion, and there is a heat dissipation device on the top of the cabinet; The size of the cabinet is subject to the design drawings.
3) The cabinet is a fully enclosed, internally separated compartment structure to ensure the safety of daily operation and maintenance and inspection, and the independent separation limits the possible electrical faults to a minimum as much as possible.
4) Structured design, allowing dismantling of side panels, rear doors and panels, easy to maintain;
5) Equipped with glass door (or mesh door), panel, terminal cover three layers of protection, in the front door of the cabinet (with door lock) can observe the operation of the equipment;
6) The cabinet has ≥IP20 protection level, with two layers of inner and outer panels, and the outer panel is designed with mesh doors, and the through-hole ratio is not less than 50%, so there is no need for additional ventilation devices;
7) Configure a special fan for the isolation transformer, and the transformer body over-temperature alarm (140°C/160°C) function;
8) The internal wiring layout of the cabinet is reasonable and neat; No exposed conductors are exposed at the wiring ports;
9) equipment of the same specification as described in the technical specifications is interchangeable, and equipment parts are also interchangeable;
10) The cabinet color can be flexibly customized according to the color swatch;
11) Installation and maintenance mode: the cabinet adopts flexible up and down wiring mode, and the front and rear doors are maintained;
【Intelligent remote monitoring and communication】
1) Remote signaling: the opening and closing status of the main circuit breaker and the fault state
2) Telemetry: electrical parameters such as main circuit voltage, current, power, power factor, and electric energy
The harmonic component of the main loop
Feeder loop load current
Feeder loop load current, switching state, load percentage
Feeder loop switching status and full charge measurement
Isolation transformer temperature monitoring
3) Remote control: reserved emergency disconnection control interface
【Remote alarm function】
1) With RS232/RS485, SNMP standard interface, support standard MODBUS protocol, all information through a communication interface access to the room environmental monitoring system.
2) The threshold alarm function is set for the incoming line and output branch, and when the load current exceeds the threshold, the LCD and background of the distribution cabinet provide the overrun alarm function, which effectively avoids risks.
3) Alarm category: main circuit overload, overvoltage, undervoltage, voltage unbalance, phase loss; The feeder branch current is zeroed with a delay of more than 2 seconds; Branch fault alarm;
4) Remote alarm at the same time, the precision distribution column head cabinet panel will send out sound and light alarm signals;
5) Main system: input over-voltage, under-voltage alarm, input frequency over-limit alarm, phase loss alarm, etc.
Branch system: Set two-level threshold alarm, default is 60%, 80% rated current. The alarm threshold should be adjustable.
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