The project overview is a hotel business office building with a floor area of 145,340 square meters. Each building has a height of 4 meters and a total of 63 floors. The office area involved in the design is a building area of 1,180m2. It consists of three office areas. The center is a walkway and other housing. It is a building suitable for office and leisure. The business area downstairs has an area of 2,714m2. It has many shops and shared space, which allows business people  to enjoy  extra  leisure  time  while   they work.

The air conditioning design of the office area adopts a water ring heat pump air conditioning system. In summer, the water ring heat pump air  conditioning  unit releases the heat of condensation to the public water circuit. The auxiliary heat source is a closed cooling tower. The winter public water circuit requires an auxiliary heat source. The boiler room is located  in  the building.  To provide.

The temperature of the return water in the public water circuit in summer  is 33°C/38°C, and the  air-conditioning  cooling  load is  153kw.

The return water temperature of the public water circuit in winter is 20°C/25°C, and the air-conditioning  heat load  is  80kw.

The  cold and  heat sources  in  the commercial  area are provided  by the cold  and heat source rooms at the bottom of the building, making the air-conditioning system in the business  area able  to operate smoothly.

In the air-conditioning water systems, for the water loop heat pump  air-conditioning system, the public water circuit uses a pump, constant flow, two control systems, and constant pressure in the expansion tank. The water capacity of the expansion tank is calculated to be 1368L. Secondly, the cooling water system adopts a closed cooling tower, the cooling water inlet and outlet temperatures are 31°C-36°C, and the cooling tower water flow is 75m3/h. The air-conditioning waterway in the commercial area adopts the same program system, and the specific   water system  design  parameters  are provided  by the  water system designer.

The air-conditioning systems adopts a horizontal concealed water ring heat pump air-conditioning unit at the end of the office area. The fresh air is selected to be sent to the room for processing separately. The commercial area uses a return air system to send the air from the diffuser, and the return air is returned by concentrated air return. Due to  the  large  wet load in the commercial area, the heat and humidity are relatively small, and it is impossible to intersect with the dew point of the machine. Therefore, the air supply condition point is determined by means of the temperature difference of the supply air, and the amount of supply air is calculated. Smoke control  system About the building's anti-exhaust smoke According to the size of the air-conditioned room, determine the smoke-proof partition, and the smoke discharge amount of each smoke-proof partitioned smoke prevention system is determined by the exhaust gas volume per unit area of 60m3h• m2, when the smoke partition is equal to or greater than two At that time, the total air volume of the exhaust system was determined as the room where the area was the largest, or the smoke-prevention  zone,  and the volume   of exhaust  gas per unit  area was   20m3/m2.The design includes: calculating the load of the air-conditioned room, determining the scheme of the air-conditioning system, calculating the wind-pipe of the air-conditioning system, selecting the correct model of the equipment, and clearly expressing the design content through the drawings.

目录

1.原始资料 1

1.1气象参数 1

1.2围护结构参数 1

1.3建筑概况及工况设定 2

2.空调系统的负荷计算 3

2.1冷热负荷计算 4

2.2冷负荷计算结果 7