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所在平台: Udemy |
课程主页: https://www.udemy.com/course/hvac-equipments-selection/
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课程名称：HVAC设备选择 课程概述： 本培训项目详细讲解了所有主要HVAC设备的选型，涵盖了以下产品的分类、标准和参数： 1. **冷水机组选择**：介绍冷水机组的分类、选择空气冷却冷水机所需的详细信息、判断空气冷却冷水机性能的参数以及使用美的品牌软件进行冷水机选择的案例研究。 2. **空气处理单元（AHU）选择**：包括三个主要部分：盘管部分、风扇部分和过滤器部分。 3. **冷却塔选择**：冷却塔的分类，重要术语（如温差、接近度等）的解释及案例研究。 4. **泵选择**：对于冷却水系统设计来说，泵选择是非常重要的一部分，头损失和流量是泵选择的必备标准。 5. **风扇选择**：风扇用于通风和空调系统，包括AHU、空气洗涤器、排气风扇等。 6. **加湿器选择** 7. **盘管选择** 8. **热回收水（HRW）选择** 通过本培训，学员将能够更有效地设计HVAC系统，因为设备选择是HVAC系统设计中的关键要素。设备选择有助于实现： 1. 成本优化 2. 节能 3. 价值工程 **HVAC选择标准**： 在确定选择标准矩阵时，我们从不同角度考虑了问题，因为不同的利益相关者优先考虑不同的选择标准。我们认为最重要的标准包括： - **成本**： - 初始成本：包括安装成本和人工成本，某些系统可能需要专业工程师进行安装，增加初始成本；运输成本也是考虑因素之一。 - 运行成本：系统运行所需的成本，波动较大，因素包括部件的更换。风扇的运行成本非常低，因为不需要特殊的维护。 - 维护：包括系统更换部件的难易程度。 - **有效性**： - 冷却能力：HVAC系统的主要功能之一是为居住者提供舒适的空气温度，对于计算机服务器机房来说，冷却能力极为重要。 - 加热能力：在极端温度下仍需考虑，尤其是在夏季温度较低的地区。 - 湿度控制：重要，以确保电子设备的正常运作。 - 通风：关注空气流通和灰尘的积聚。 - **其他因素**： - 使用寿命：业主通常会关注设备的使用寿命。 - 声学与振动： - 组件复杂性及可控性：系统控制的便利性。 - 能耗：应尽量选择低能耗的系统，以降低长期开支。 - 气候适应性：设备在不同气候下的有效性。 本课程旨在帮助学员掌握HVAC设备选择的核心要素，从而提升设计能力，保障系统性能的稳定与经济性。
This Training Program includes detailed Equipment selection of all major HVAC Equipments. Classification, criteria, parameters of following Products has been discussed in Detailed:1. Chiller Selection- Classification of Chillers- Details required to select Air cooled chiller- Parameters to judge performance of Air cooled Chiller- Chiller selection through Midea brand software- Case study2. AHU SelectionIt includes all 3 major sections- Coil section- Fan section- Filter section3. Cooling Tower Selection- Classification of cooling Tower- important terminologies like Range, approach etc- Cas study4. Pump SelectionVery important section for chilled water system design. Head loss & Flowrate is mandatory criteria for pump selection.5. Fan SelectionIts used in ventilation as well as Air conditioning. Fans are used in AHU , Air washer , Exhaust Fans etc6. Humidifier Selection7. Coil Selection8. HRW SelectionAfter going through this Training Program candidate must be able the design the system in more effective way as Equipment selection is an important parameter of any HVAC system Design.Equipment Selection helps in1. Cost optimization2. Energy saving3. Value EngineeringHVAC Selection CriteriaThere were several factors that we took into consideration when thinking about how to come up with a criteria matrix. We looked at the problem from different perspectives as different stakeholders would prioritize different selection criteria. The ones we thought were most important are listed below:COSTInitial cost - This includes costs of installation and labour costs. Some systems may need a highly specialized engineers to install which will inevitably increase initial cost. We are also taking into account any transportation costs. The owners are most likely going to be fairly concerned with initial cost.Operating cost - The cost in order to run the system, this can vary greatly as factors such as replacement of elements is included. A system like a fan will have very low operating cost as no special labour is required.Maintenance - This includes things such as replacing parts on the system and ease. Similarly to before, the fan will require minimal maintenance whereas other systems such as a Rooftop Package Unit will be harder to maintain and will require an engineer.EFFECTIVENESSCooling Capacity - One of the main purposes of HVAC systems, conditioning the air to a comfortable temperature for occupants. In the case of a computer server farm, cooling capacity is one of the, if not most important criteria. Computer servers will generate heat whilst operating, most of the time operating 24 hours a day. Cooling capacity must be sufficient to stop the servers from over heating and therefore turning off which could lead to a huge loss of data.Heating Capacity - Whilst not as important as cooling capacity in our case, still required in extreme temperatures such as Anchorage, Alaska where average high temperatures in January are around 23ºF. Humidity Control - In a computer farm where there are many electrical systems, humidity control is important to ensure the servers function properly. If humidity is too high, this may cause damage to terminals and hardwarePressure - Not a major concern, but is definitely equipment dependent. Each computer system may have special needs involving pressureVentilation - Considered in terms of air circulation and ability to minimize dust gathering on the servers.MISCELLANEOUSLife Span - of an interest to the owners, we are designing for the computer server farm to last 20 years so the lifespan of the HVAC system should ideally also last this longAcoustics/Vibration - whilst not vital for a computer server farm as they are not usually occupied, we considered this criteria anyway thinking about if a the server farm was attached to a building that was occupied by peopleComponent Complexity - the ease at which the system can be controlled to provide the amount of HVAC requiredControllability - the ease of controlling the environment of the roomEnergy Consumption - of a concern perhaps to environmental groups and also the owner who will be paying for energy. Ideally, a low energy consumption system would be the best option however, this may not always meet the HVAC needs.Climate - how effective the system is within a certain climate. This will be weighted in our criteria matrix as we have chosen locations which are at opposite ends of the spectrum in terms of climate throughout the year
