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The Building is a ten -storey building integrated . Whole building is dominated by office floors, layout similar Floors with air fan coil system ; ninth floor terrace room began to appear . Each layer has arranged toilets, toilets should be kept as negative , bathroom exhaust fan exhaust pipe by the concentrated exhaust shafts, ventilation shafts through the exhaust fan exhaust gases to the outside row . System selection is not complicated , easy construction, air conditioning in summer and heating in winter with the use of a system, whether from the economic life , or from the beautiful, clean perspective, compliance with building use requirements .
I. Design scope
1. In this project, design scope includes: AC and ventilation systems in office area.
2. Process exhaust system and ventilation system in toilet areas.
II. Design basis
Building layout plan and process data;
《code for design of heating, ventilation and air-conditioning》（GB50019-2003）；
《code for design of building fire protection and prevention》(GB20016-2006)；
《technical specification for building smoke control》（DGJ08-88-2006)；
《design standard for energy efficiency of public buildings》(GB 50189-2005);
《discharge standard for atmosphere pollutants》(GB16297-1996)；
《noise standard for industrial enterprises》(GB12348-2008)；
Other design codes.
III. Indoor and outdoor design parameters
1. Outdoor design parameters(SUZHOU)
Atmospheric pressure
Winter: 102.51kPa
Summer: 100.52kPa
Outdoor dry bulb temperature
Winter: 35℃
Summer: -6℃
2. Indoor design parameters
Idoor dry bulb temperature
Winter: 26℃
Summer: 18℃
IV. AC system design
1. The air conditioning rooms, office area within the plant using multi-line VRV system, indoor unit according to the function of the use of the room layout, and to consider with the interior decoration and other factors, outside fresh air would be supplied to office area directly after treated by make up air unit. The fresh air volume shall meet the min. Requirement of personal. There are one VRV systems for office area of warehouse. The VRV outdoor unit mounted on roof or outdoor ground.
2. Fresh air for the air conditioning rooms, Fresh air for the other areas are supplied by the fresh air heat recovery unit mounted above ceiling. The outside fresh air will be pre-heated or pre-cooled by these units.
3. Provide split-type direct expansion air conditions (cooling only)for the other it rooms, to maintain the temperature of the room.
5. Provide split-type direct expansion air conditions for the office of utility area.
6. Provide split-type direct expansion air conditions for the guard room.
7.the cooling load of ac area is 1100 KW.
Fan-coil system is mainly used air-conditioned rooms bear the cooling load and the heating load, the ceiling of each room placement within 1-2 fan-coils. The new wind of fresh air through independent channels into the first fan-coil, and then mixed together with return air into the room. New wind generating units installed on ceiling, each floor to install two new air units of the burden of all air-conditioned rooms in the new wind load. The air-conditioning system has the advantage of occupying less floor space, cooling and heating can be concentrated at the same time, the terminal device and a separate regulatory function switch, the room temperature alone can regulate and control, and prevent cross-infection of the air. Air-conditioning system uses closed-water systems, not because it apart from pollution, save initial investment, but also has great energy-saving effect.
The design elements include: hot and cold air-conditioning load calculation; air-conditioning system and the determination of proof; air supply and air supply parameters of the determination; selection of air-handling equipment; cold and heat source of choice and selection of equipment; airflow calculated; hydraulic calculation; other equipment of choice; thermal insulation and anti-corrosion and vibration and noise reduction, and other content.
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