ABB 接口过程编程板 64844-004 3-064843-002
环境在所需参数范围内，寿命周期成本与需求兼容。请记住，成本将与
过程的需要。几乎可以更地控制环境
这总是意味着更大的成本。
2.定义问题。在本图中，问题在于选择
适当的暖通空调系统和设备，以满足目标。这个
问题必须明确和完整地定义，以便
可以显示解决问题的解决方案。
3.确定替代解决方案。头脑风暴在这里很有用。
解决任何问题总是有几种不同的方法。如果涉及改建或翻新，一种选择是什么也不做。
4.评估备选方案。必须对每个备选方案进行评估
为了有效性和成本。请注意，“无所事事”总是有代价的
等于不这样做而“失去”的机会、能量或效率
还有别的。
5.选择备选方案。许多因素影响了选择
过程有效性、成本、可用性、实用性等。
还有无形因素，如业主对特定类型设备的需求。
6.检查。选择的替代方案真的解决了问题吗？
7.实施所选备选方案。设计、构建和操作系统。
8.评估。问题解决了吗？目标实现了吗？
在下一个设计中可能会有哪些改进？
许多事业由于失败而失败，或终变得软弱
以满足这些问题解决增量中的一个或多个。有
能够识别关键问题或关键成功的艺术
或真正有益的选择。有时评估
将受到时间、预算或偏见的限制。假设或计算中偶尔会出现未检查的错误。防止失望的好方法是
良好的培训和责任团队的良好经验。
1.3价值工程
价值分析或价值工程（VE）描述了一种高度复杂的分析过程，其起源于装备
第二次世界大战的短缺。为了维持和增加战争相关产品的产量，通用电气公司的工程师开发了一种有组织的方法来识别设备或系统提供的主要功能或服务。然后他们看着
当前的解决方案，看看它是否真正以简单和具成本效益的方式实现了目标，或者是否有一种替代方法可以以更简单、成本更低或更高的方式完成工作
ABB 接口过程编程板 64844-004 3-064843-002
ABB 接口过程编程板 64844-004 3-064843-002
he environment within required parameters, at a life-cycle cost compatible with the need. Keep in mind that the cost will relate to the
needs of the process. More precise control of the environment almost
always means greater cost.
2. Define the problem. The problem, in this illustration, is to select
the proper HVAC systems and equipment to meet the objectives. The
problem must be clearly and completely defined so that the proposed
solutions can be shown to solve the problem.
3. Define alternative solutions. Brainstorming is useful here.
There are always several different ways to solve any problem. If remodeling or renovation is involved, one alternative is to do nothing.
4. Evaluate the alternatives. Each alternative must be evaluated
for effectiveness and cost. Note that ‘‘doing nothing’’ always has a cost
equal to the opportunity, or energy, or efficiency ‘‘lost’’ by not doing
something else.
5. Select an alternative. Many factors enter into the selection
process—effectiveness, cost, availability, practicality, and others.
There are intangible factors, too, such as an owner’s desire for a particular type of equipment.
6. Check. Does the selected alternative really solve the problem?
7. Implement the selected alternative. Design, construct, and operate the system.
8. Evaluate. Have the problems been solved? The objectives met?
What improvements might be made in the next design?
Many undertakings fail, or are weak in the end result, due to failing
to satisfy one or more of these problem-solving increments. There is
an art in being able to identify the key issue, or the critical success
factors, or the truly beneficial alternative. Sometimes the evaluation
will be clouded by constraint of time, budget, or prejudice. Occasionally there is an error in assumption or calculation that goes unchecked. The best defense against disappointment is the presence of
good training and good experience in the responsible group.
1.3 Value Engineering
Value analysis or value engineering (VE) describes a now highly sophisticated analytical process which had its origins in the materiel
shortages of World War II. In an effort to maintain and increase production of war-related products, engineers at General Electric developed an organized method of identifying the principal function or service to be rendered by a device or system. Then they looked at the
current solution to see whether it truly met the objective in the simplest and most cost-effective way, or whether there might be an alternative approach that could do the job in a simpler, less costly, or more
ABB 接口过程编程板 64844-004 3-064843-002
