Air conditioning system

Contents

1. General part

2. Description of construction area

3. Characteristics of the air-conditioned room

4. Equipment selection

5. Power supply to air conditioners

6. Water supply and drainage systems

7. Plenum-Exhaust Ventilation and Gas Removal System

8. Environmental impact of the designed air conditioning system

9. System Installation Organization

10. Number, qualifications and operating modes of personnel

11. Literature

Summary

Working documentation for the creation of the Ventilation and Air Conditioning System of Bashinformsvyaz OJSC at the address: Ufa, 30 Lenin St., 2nd floor, developed on the basis of the following documents:

GOST R 21.11012009. Design documentation system for construction. Basic requirements for design and detailed design documentation;

GOST 21.11095. Design documentation system for construction. Rules for executing the equipment specification.

General part

The working documentation is based on the following documents:

Agreement No. 806/122011 of 30 December 2012.

Engineering infrastructure of the telecommunications data processing center of Bashinformsvyaz OJSC at the address: Ufa, st. Lenin, 30, 2nd floor. Technical requirements (17 April 2012).

The following regulatory documents were used in the development of detailed documentation:

SNiP 41012003. Heating, Ventilation and Air Conditioning;

SNiP 2.04.0591. Heating, Ventilation and Air Conditioning;

SNiP II379 * ed. 1995 "Construction heat engineering";

SNiP 2.09.0487 ed. 1995 "Administrative and household buildings";

SNiP 2.08.0289 * ed. 1993 "Public buildings and structures";

SniP 230199. "Construction climatology and geophysics";

SNiP 23032003. "Noise protection";

SNiP 2.04.1488. "Thermal insulation";

MV 51278. "Technical requirements for buildings and premises for installation of computer equipment."

Description of construction area

Construction area: Ufa.

Geographical latitude: 55¼ 44. "

The absolute maximum air temperature of the warmest month: + 39 ° С.

Equipment selection

In accordance with the air treatment process, the design provides for:

cleaning of recirculation air in coarse filters;

humidification with steam humidifier during cold and transient periods of the year;

cooling in a freon cooler in a warm period of the year to a temperature of + 22 ° С.

automatic adjustment and maintenance of air temperature and humidity in the DPC room. Air conditioning automation systems are included in the equipment supply package and are not developed by this project.

According to SNiP 41012003 "Heating, Ventilation and Air Conditioning" and the Customer's requirements for maintaining air environment parameters within the specified limits, the project provides for redundancy of air conditioning systems according to N + 1 scheme. Internal air conditioner units of K1.1, K4.1, K9.1 systems are installed in the serviced server room on frames on the concrete floor.

In the DPC room, an air exchange scheme is implemented in which warm air is taken from under the ceiling space, and cold air enters the room through lattice tiles of the false floor into the cold corridor zone.

Freon pipelines and cables are laid to external blocks in the sleeves, through holes in the walls. Heat insulate all freon piping. External units of systems K1.2, K4.2, K9.2 are installed on the external wall of the building between the 1st and 2nd floors, on metal structures developed in the section of NPP grade.

Condensate removal from internal units of air conditioning systems is performed by built-in pumps via polypropylene pipe, outside the server room to the existing sewage riser of the building sewage system. Connect the drain pipeline to the drain system riser through the hydraulic seal.

Water is supplied to steam humidifiers of systems K1.1, K4.1, K9.1 from the existing riser of the cold water supply system of the building system. A water treatment plant is provided to provide the required water parameters for the steam humidifiers.

To prevent water leaks of cold water supply system, "Neptune" set is provided with installation of solenoid valve on supply pipe outside the server room and installation of leak sensors under false floor near internal units of air conditioners of K1.1, K4.1, K9.1 systems.

In the EPU room there is a K10K12 air conditioning system based on channel type splits operating according to N + 1 scheme. The design heat generation is 25 kW.

Air conditioners are attached by standard fasteners included in the equipment supply set. External units of K10-K12 split systems are installed on the end part of the building, in place.

Installation, adjustment and start-up of air conditioners shall be carried out by the service service of the equipment manufacturer, in accordance with the requirements of the manufacturer.

Power supply to air conditioners

Power supply of equipment is provided according to the first reliability category according to PUE.

Connection and grounding shall be performed in accordance with PUE, complying with the requirements of the installation manual.

Cables are laid on the room by trays under the false floor.

For power supply of conditioners, ventilation and the station of water treatment electric board ShchK2.1 is provided (see the work documentation of the ES brand).

WATER SUPPLY AND DRAINAGE SYSTEMS

Water supply to humidifiers is carried out through pipelines from plastic pipes laid from the existing water supply network,

Drainage from the internal units of precision conditioners and humidifier is carried out through a pipeline from polypropylene pipes to the sewerage system of the building, laid in the space of the false floor with a slope of at least 3 degrees. per meter of length.

Plenum Ventilation and Gas Removal System

To ensure air exchange in the DPC room, a supply ventilation system PV1 is provided, providing air exchange in the amount of at least once per hour. In it, the supply air in the EU5 class filter is cleaned and heated to + 200C (under the condition of outdoor air intake), the supply ventilation provides air overpressure within the data center room. Exhaust ventilation ensures air exchange in the room and discharge of exhaust air into the street .

Heat recovery facilities are provided in the ventilation plant to save power.

It is envisaged to remove fire extinguishing products from the lower, middle and upper areas of the room.

Plenum ventilation operation modes:

normal mode - fans operate, all fire-retarding valves are open, positive pressure drop in DPC 010 Pa is maintained;

"Fire" mode - all fans are off, all fire retardant valves are closed;

gas removal mode - gas removal fan works, all fire retardant valves are open, pressure drop -5 is maintained. 0 Pa.

All connections of air ducts to DPC and EPU rooms are made through fire retardant valves with fire resistance limit EI 60. Holes are provided for air ejection and intake by ventilation system on the external wall of the building from the side of the end of the building. Condensate removal from PV1 system is performed to the sewer network of K1 building. Connection is performed through hydraulic lock.

Environmental impact of the designed air conditioning system

In the designed system, the main working substance that can have an impact on the environment is Freon refrigerant R407.

Refrigerant R407 is widely used in the world and is allowed for use in Russia. It refers to ozone-safe refrigerants (ozonedepleting potential (ODP) = 0.05). Being in the atmosphere does not create a greenhouse effect (the greenhouse effect potential (GWP) is 1600). In terms of toxicity, R407 is the least hazardous (toxic hazard factor 0.01) compared to other refrigerants used. Maximum permissible concentration is 3000 mg/m3.

The maximum sound pressure level emitted by external units of air conditioners into the atmosphere is 55 dBA. At a distance of 10 m from the external unit, the sound pressure level is not more than 40 dBA, which is below the permissible noise level for areas adjacent to residential buildings.

SYSTEM INSTALLATION ORGANIZATION

Section IVS of working documentation shall provide for arrangement of openings in the building through the walls for passage of communications in the sleeves, as per the construction assignment (see sheets 3-6)

During installation works it is necessary to comply with all safety requirements (SNiP 12032001 "Occupational safety in construction") and fire safety requirements (PPB012003 "Fire safety rules").

During erection of SLE it is necessary to perform the following measures:

protect the construction area with the installation of warning signs;

prevent the presence of unauthorized persons in the construction area;

appoint responsible persons for compliance with safety and fire safety regulations.

Number, qualifications and operating modes of personnel

This SLE allows it to be serviced by personnel who are part of the general facility operation service, temporarily engaged for work on the SLE, without creating a separate unit for servicing the SLE.

The recommended composition of the personnel involved is as follows:

air conditioning system operation engineer - 1 person;

service engineer on duty - 1 person.

All specified personnel of specialists shall undergo instruction on operation of the data center SCR. Operation engineers shall have sufficient English language knowledge to understand the VMS equipment documentation, as well as the marking, indication and commands of the VMS equipment.

The Air Conditioning Operation Engineer and the Service Engineer on duty shall have a certificate of service of this type of SCR.

All the specified personnel of specialists, as well as specialists of the organization working with the data center, must undergo training in electro and fire safety in accordance with the current safety and fire safety standards.

These specialists shall ensure:

Check of SLE equipment operability in accordance with the regulations specified in the technical documentation for SLE equipment;

Execution of scheduled scheduled works independently, or together with specialists of the servicing service organization, in accordance with the regulations specified in the technical documentation for SLE equipment;

Carrying out the current settings of the VMS equipment in accordance with the changes in loads from the main equipment of the data center and external conditions, guided by the technical documentation for the VMS;

Initial diagnosis of pre-emergency (emergency) situations related to the data center equipment, with the transfer of information to the service organization and the call of its employees;

Prevention of the development of accidents related to SLE, with the call of employees of the service organization and (if necessary) the relevant services of the facility and the city.

The operation mode for users and personnel servicing SLE shall correspond to the accepted operation mode of the Customer's enterprise.

It is recommended to have one service engineer on duty 24 hours a day.