Design General Information
This design for a Shanghai office building air conditioning ventilation system design. The building belongs to the large office building, a total construction area of 497.18. Three layer, a layer underground, building a total height of 14.16 m. Located in Shanghai area, the ground layer 3, 1 floor underground, including the height of 14.16 m on the ground, underground layers of 2.1 m high. The storeroom for the underground layer, the ground two to three layers for men's and women's dormitory.
Considering the building a layer of office building, air conditioning running time is in the work time, so the computational load when the design take time for 6 to 18. Building in the design of the main room for the office, most of the area is lesser, and each room are connected, should make the selected air-conditioning system can realize independent control of each room, considering the factors, determine the selection of fan coil plus fresh air system. In the room decorate horizontal fan coil, embedded in the form of dark outfit. The centralized system is set to fan coil plus fresh air system independently, fresh air units from the introduction of fresh air to outdoor, indoor air enthalpy value does not undertake indoor load. Fan coil units to undertake indoor cooling load and part of all new rheumatoid load.
Ventilation design, natural into the exhaust is complementary way, the air is not less than 6 times per hour; Toilet exhaust design for mechanical ventilation fan to outside the balcony, air output per hour is not less than 10 times the ventilation calculation of the design according to the structure and the need for air conditioning scheme, can meet the requirements of use, which can satisfy the office comfort. In addition to from the scientific rationality and economy of air conditioning design, as well as the construction of the whole aesthetic considerations. The central air conditioning more and more application in modern architecture, advanced technology is becoming more and more mature. Can effective management, one-time investment, easy to use, late and do not take up the effective space of building. This paper is the design of central air conditioning to selection, to the checking calculation of a. From the usability good combination to scientific and economical. Scheme selection is the totality of the overall consideration and design ideas, computation part is the foundation of the whole design, drawing part is associated with the design and construction of the actual piping and installation. All three parts together, is closely connected with the whole project. Each part to ensure the scientific and reasonable, accurate, economical.
By calculating the total load, to determine the system form, the design, main air conditioning system solutions for fan-coil unit plus fresh air system, fan coil units to undertake air conditioning cooling load and heat load of the room, each office room ceiling mounted a fan coil units. Fresh air is through independent fresh air duct into the first fan coil units, air mixed together into the room again. Fresh air unit condole top installation, fresh air unit burden this layer all the fresh air of air conditioning room load. The air conditioning system has the advantage that occupy less floor area, can focus on cooling and heating; At the same time each terminal equipment have independent switches and adjustment function, each the temperature of the room alone can adjust and control, and prevent cross infection of air. Air conditioning water system adopting closed system, because it is in addition to not pollution, save the initial investment, but also has the obvious energy saving effect.
According to the characteristics of the buildings in the chilled water system determines the I choose closed, vertical lift, dual control, single pump, variable flow system, this kind of air conditioning water system has simple structure, small initial investment, line is not easy to produce dirt and corrosion, the advantage such as less pump power consumption. Set design in air conditioning room in the basement, models for FP - WA 20.4 / A.
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