暖通空调工程系统设计(说明书+图纸+外文文献翻译)
摘要
本设计为长沙市某科研大厦舒适性空调系统，设计内容包括冷负荷计算，方案的比较，空气处理方案的选择，空调末端设备选型，水管路和风管路系统的设计计算及附属设备的选型，并进行设计说明书的编制和施工图的绘制。设计坚持可持续发展理论，树立了节约能源和全寿命周期成本分析的科学理念，从节能和环保出发，综合考虑建筑结构、使用要求、环境条件，在系统的选择、设备的选配及系统的运行控制等方面采取一定的节能措施，使系统在各种工况下均能高效节能运行。根据节能设计标准要求，结合计算软件，采用谐波法对整个大楼的冷负荷进行逐时计算；分析负荷日变化和全年变化情况，通过多个方案的可行性论证和经济性比较，结合实际的能源政策，选用了水冷式螺杆机组加燃气热水锅炉的冷热源运行策略。空调系统采用风机盘管加独立新风的空气-水系统。在设计计算的基础上，还进一步分析比较了不同建筑文护结构、设计参数、空调方案等对能耗的影响，提出空调系统各环节存在的问题及节能潜力。
关键词：舒适性空调，可持续发展，建筑节能，室内空气品质
HVAC design of Technology building of Changsha
Abstract
This design is about the concertrated air conditioning system of some Technology building , including a series of design contents such as cooling load calculation, scheme comparision,selecting and calculating the water system and ventilation system, as well as selecting air terminal devices and appurtenances, and working out the design instruction and drawing the construction drawings employing CAD. During the design , I adhere to sustainable development ,set a scientific conctept of resources and a total life cycle cost analysis. Based on the energy conservation and environmental protection ,I consider intergatedly into the building structures ,the feature of demands ,and the environment conditions. Some energysaving measures are adopted during the choice of system scheme ,equipment matching and operational control to achieve high efficiency in various operating conditions . According to energy-efficient design standards , the cooling load of the whole building is calculated with the harmonic wave method, combining to computer software. Water cooled screw rod unit is used to supply the cooled air conditioning water, while using gas-fired hot water boilder as the heat source. This scheme is determinated according to the feasibility analysis and economical comparision of different choices, energy policy ect. Fan coil unit and the independent fresh air system is the main choice in the design. Based on the design, further comparative analysis of impact of different architectural envelope thermal characteristics ,design parameters, air conditioning scheme on the energy consumption . Points out the energy consumption fearturesand the potentials of energy saving.
Key words: comfortable air condition,sustainable development,building energy efficiency,in door air quality
目 录
1 绪论………………………………………………………………………………5
1.1 设计目的……………………………………………………………………5
1.2 设计要求……………………………………………………………………5
1.2.1 初步设计……………………………………………………………5
1.2.2 施工图设计…………………………………………………………5
2 设计任务及依据…………………………………………………………………6
2.1 工程概况……………………………………………………………………6
2.2 设计依据……………………………………………………………………6
2.2.1长沙市室外空调设计参数…………………………………………6
2.2.2室内空调主要设计参数……………………………………………6
3 负荷计算…………………………………………………………………………6
3.1冷负荷计算 …………………………………………………………………8
3.2人体散湿负荷………………………………………………………………10
3.3计算结果……………………………………………………………………10
3.4大厦冷、湿负荷汇总………………………………………………………23
3.5大厦热、湿负荷汇总………………………………………………………25
3.6电梯前室的新风负荷…………………………………………………28
4 冷热源方案分析………………………………………………………………29
4.1方案拟订……………………………………………………………………29
4.2方案初投资计算……………………………………………………………34
4.3方案运行费计算……………………………………………………………35
4.4总费用计算…………………………………………………………………37
4.5方案确定……………………………………………………………………37
5 房间的空气处理方案及送风量的确定………………………………………37
5.1空气处理方案………………………………………………………………37
5.2 送风量计算 ………………………………………………………………38
6 末端设备选择………………………………………………………………38
6.1 风机盘管选型……………………………………………………………38
6.2新风机选型…………………………………………………………………34
7 空调冷冻水系统水力计算……………………………………………………41
8 房间气流组织…………………………………………………………………62
9 送、回风口选型…………………………………………………………………69
10 风管水力计算…………………………………………………………………72
11 冷热源设备选择………………………………………………………………78
11.1 冷冻水泵的选择………………………………………………………78
11.2 膨胀水箱的计算………………………………………………………78
11.3 冷却水系统……………………………………………………………78
12 制冷站设计……………………………………………………………………80
12.1 机房设计…………………………………………………………………80
12.2 设备布置间距……………………………………………………………80
12.3冷却塔的设置……………………………………………………………80
12.4制冷站主要设备…………………………………………………………80
13 管道保温设计…………………………………………………………………82
14 消声与减振设计………………………………………………………………84
15 水系统的水质管理……………………………………………………………85
16 参考文献 ………………………………………………………………………86
17 致谢…………………………………………………………………………… 1137