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6.2卫生间通风设计
本工程房间的卫生间设机械排风装置，设置排气扇，卫生间的通风换气量按20-30m3/h。无窗卫生间设置排风口，排风由风管同一接出，由排风机排至室外。靠近外墙且有外窗的卫生间，直接排到室外。卫生间保持负压，防止气外泄，卫生间选用排气扇加止回阀。
The general illustrate of design
1 The source of the design
This works for the HeShun air-conditioning design, the objective is through the graduate design, mastering air-conditioning systems design, design steps ; enhancing the graphics capabilities and develop analytical, problem-solving ability of the actual application. laying a reliable basis for the Indoor environment and public works construction equipment the HVAC design, construction, operation and management of work in the future.And According to the study basic theory and professional knowledge with practical projects, in accordance with the engineering design of norms, standards, design and related reference materials Atlas, complete the required engineering design. Design a reasonable, safe, reliable, energy-saving and practical, accurate calculation of the design, drawings clearly.
2 The general situation of the engineering
The work is the HeShun wine shop design of air-conditioning, Shanghai HeShun wine shop high five-story, each floor has more than 20 rooms. Each standard room area of 20 square meters. A total construction area of 14,000 square meters. With the engine room, office space and entertainment functions of the hotel.
Hotel staff is a large number of public places, temperature, humidity, cleanliness and fresh air, great influence to the hotel employees and guests. Polluted the air dust spread of certain diseases. Therefore, the hotel's air environment more and more attention to the business sector. Add a good air ventilation system for the hotel, welcomed by a lot of people. According to statistics, in the same city the same lot number of hotels, who set a good ventilation and air conditioning systems, operating in places far greater than that of similar size hotel, and hotel employees a better work environment improvement, enhance work efficiency , To reduce staff sick, attendance increased.
3 The basic of Design
3.1 Geographical location:
Shanghai latitude: north latitude 30°3′ and longitude: east longitude 120°2′, altitude:4 metres.
3.2 Meteorological parameters
Atmospheric pressure: Winter 102.51 Kp, the summer: 100.53 Kp.
Outdoor air parameters: the summer dry bulb temperature: 34 ℃
Outdoor summer air-conditioning calculated wet bulb temperature: 28.2 ℃,
The average temperature of 30.4 ℃ on the temperature less 6.9 ℃,
Winter dry bulb temperature: -4 ℃ relative humidity of 75%
Outdoor ventilation design parameters
Summer dry bulb temperature: 32 ℃ winter dry bulb temperature: 3 ℃
3.3 Specification of design
Heating, ventilation and air conditioning control specification
Energy-saving building design standards
Heating, ventilation and air conditioning design
Heating, ventilation and air conditioning drawing standard
Fire protection design of tall buildings
Technical measures for the national civil engineering design - Air Conditioning • Power
HVAC drawing standards
Heating, ventilation and air conditioning terminology standards
4.The main design work
Choice of architectural features of air-conditioning; cold and heat load calculation; wind of a water pipe layout, hydraulic calculation; breakdown of the water pipeline computation. Hydraulic calculation based on choice of air-conditioning, including air conditioning units, the new wind generating units, fan coil, outlet and other equipment.
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