TECHNICAL MEMORANDUM

INSTALLATION MECHANICAL  VENTILATION

1. Generals

1.1. The project includes building a technological

1.2. Reference Documentation

In drawing up the project have been considered:

- technology plans ...

- No architectural plans ... ..

- Standard I5(Rumanian )  on ventilation design and wiring

1.3. Quality control, verification and testing

The copy control program sheet is attached to this documentation.

Receiving and commissioning and commissioning will be made only after it finds that were made for work safety measures and fire protection according to the project and that these measures correspond to working conditions and those set forth in the respective normative acts in force on commissioning.

2.1. Mechanical Ventilation

2.1.1. The basic function of plant

- Necessary conditions of temperature 5 < ti <  35 º C the proper functioning of technological equipmen

- room warming up to minimum 5 º C in the cold season in the part technological disaster

2.1.1.2. Operational requirements

At a temperature of 5 º C <  ti, installation of ventilation will work without stopping;

in the cold  (te <  5 º C) plant will operate with air recirculation, introducing a flow of fresh air in the room.

2.1.1.3. Design requirements

Design requirements are:

- ensure a temperature of +5 ° C ÷ + 35 ° C in room technology.

2.1.1.4. Seismic framing

Facilities are seismically qualified.

2.1.1.5. System requirements for auxiliary services

1. The power supply to electricity consumers of power and consumer power and automation.

2. The refrigerant supply battery conditioning cooling aggregates

This will ensure the supply of refrigerant in the warm period te < 5 º C).

3. Heat supply system (water + glycol) heating the aggregates battery conditioning.

This will ensure the heat in the cold air ( te >  5 º C). In technological disaster.

2.1.2. The technical description of mechanical ventilation

2.1.2.1. Description of scheme

Camera technology is equipped with mechanical ventilation in order to ensure conditions of microclimate 5ºC ”lt;you “lt;35 º C required for the proper function, the technological equipment.

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Air is introduced into the room by aggregate type AERMEC modulated by fans and the bad guy axiale.de VHR.

In the warm period (te >  5 º C). fresh air outside, filtered and cooled air is introduced into the room and foul is discharged outside.

In the cold season ((te < 5 º C) will be recycled some of the exhaust air.

2.1.2.2. The plant performance data

- circulated air flow D = 27 500 kcal / h

- cooling load Qr = 154.000kcal / h

- heating load Qi = 89.000 kcal / h

2.1.2.3. Characteristics of main equipment and materials

Conditioning unit will be equipped with medium pressure radial fan double Messenger, cell dry filter with filter material., Battery type horizontal heating BIO (2 pcs.)

BRA cooling batteries (2 pcs), type the symbol unit is AFIRY

Channels will be made of black metal, primed and painted.

2.1.2.4. Control and adjustment requirements

Ventilation should be adjusted in accordance with Annex XV I5 normative recommendations hydraulic adjustment of ventilation facilities.

2.1.2.5. Plant Location

Aggregates of conditioning will be placed in the ventilation room for technological hall to share and 0.00 exhaust axial fans located outside the building on a metal platform share + 3.80.

2.1.2.6. Painting Requirements

Channels in the blackboard, flanges and support devices and surfaces will be rough-cast exterior alkyd enamel will be painted.

2.1.2.7. Requirements for strength and protection from pressure

Air channel wall thickness was chosen for a pressure less than 50 daN/cm2 channels.

Straight channel sections will stiffen as indicated in the normative I5, Annex XI and the type 60/011-1-V-VI detail.

2.1.3.1 Operating modes

Operating aggregates introduce filtered air and cooled in the warm period (te >  5 º C) hall where technology is directed downwards

Hot air came under the roof is drawn through the outlets and conducted outside the VHR type axial fans

In the cold air (I “lt;5 º C) technology aggregates introduce fresh air mixed with recirculated.

Supply air is not required to be heated (Roundup result of calculation)

Exhaust fans will work under the pressure.

Technological disaster in the supply air (fresh air and recirculated air) is heated in the cold air.

If damage will occur during the warm season ventilation installation will no longer work.

For reliability were provided by two aggregate conditioning for air introduction and two axial exhaust fans (one being reserved the other).

In case of damage to a ventilation machine will automatically enter in the other, machine operation ..

2.1.4. Testing and adjusting plant

Adjust the installation will be using proprotionala procedures are described in normative Annex V. I7

2.1.5. SAFETY AND HEALTH PROTECTION

It was intended to ensure normal working conditions and avoid injury.

During execution

Crt.	Name of measure	Prescriptions
1	Straps	NRPM
2	Protection against accidents in the current execution conditions to perform works	Employment protection rules in business

2.1.5. Prevention and firefighting

We aimed to provide technical solutions for the design of ventilation installations that do not favor the onset or development of a fire and were provided following these steps:

2.1.5.1. For the period of operation

. The fire hall to disrupt the aggregates technology and axial fans.

2.1.5.2. For the period of execution

It is established by the developer documentation site organization and the contractor.