5SXE04-0146 3BHE004569R0003 5SHZ0860F0005 励磁IGCT板 ABB
现状是不充分或成本太高。
阿尔方索·德尔·伊索洛通常被认为是
将价值工程引入建筑行业，该行业定义包括暖通空调系统。戴尔“伊索洛都”写道
书“1”并领导研讨会，建立了
价值工程在建筑和工程公司的实践
以及遍布全国的客户办事处。
有一个全国性的专业协会，称为SAVE（协会）
美国价值工程师），总部位于乔治亚州士麦那。这个
社会证明并支持那些对价值工程过程的原则和实践感兴趣和承诺的人。
建筑中的价值工程假设了一个问题。它可以
可以是广泛的关注点，如系统，也可以是狭义关注点
例如设备或部件。价值工程过程攻击了现状
分为四个阶段。
1.收集信息。清楚简洁地确定关注项目的目的。然后收集与性能、组成、预期寿命、资源使用、建造成本、构成其职责的因素等相关的信息，
以及用于呈现信息的表格。确定成本高的领域
制造和运行。了解项目的一般情况和
细节
2.开发替代方案。首先问一个问题，我们是否需要
这件事，这项服务？或者我们是习惯还是传统？
如果需要该功能，那么询问，我们还可以如何实现
目标相同吗？我们是否可以合理地降低我们的期望，或者可以接受地降低我们努力的程度？我们能否消除多余的材料（使其更轻或更小）？我们能换一个少一点的吗
昂贵的组装？我们能消除一部分装配劳动吗？我们可以将一系列多尺寸单元标准化为几个吗
组件？
在这个阶段，我们学会了不去批评，不去评价，因为“疯狂”产生了“赢家”不要对你不感兴趣的事情感到沮丧
要有创造力，思想开放。把想法写下来。
3.评估备选方案。开发了不同的想法
做同样事情的方法，现在评估每个备选方案的客观和主观优势和劣势。性能研究
暖通空调工程基础：1部分
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4.一章
相对于建造和运营的成本成本。寻找能以低的总体成本运行良好或更好的替代方案。这
通常是与原始解决方案不同的解决方案。
请注意，仅为降低成本而进行的分析工作是：
这不是真正的价值工程；以小化生命周期为目标
成本经常受到影响。这个国家有足够的建筑物
华丽的装饰和不舒适的居住者证明了这一说法。正如约翰·罗斯金多年前所说：
付出太多是不明智的，但付出太少更糟糕。当你
付出太多，你会损失一点钱
5SXE04-0146 3BHE004569R0003 5SHZ0860F0005 励磁IGCT板 ABB
5SXE04-0146 3BHE004569R0003 5SHZ0860F0005 励磁IGCT板 ABB
status quo as being inadequate or too costly.
Alphonso Dell’Isolo is generally credited as being the man who
brought value engineering to the construction industry, which industry by definition includes HVAC systems. Dell’Isolo both ‘‘wrote the
book’’1 and led the seminars which established the credibility of the
practice of value engineering in architectural and engineering firms
and client offices across the land.
There is a national professional society called SAVE (Society of
American Value Engineers), headquartered in Smyrna, Georgia. The
society certifies and supports those who have an interest in and commitment to the principles and practices of the VE process.
Value engineering in construction presumes an issue at hand. It can
be a broad concern such as a system, or it can be a narrow concern
such as a device or component. The VE process attacks the status quo
in four phases.
1. Gather information. Clearly and succinctly identify the purpose(s) of the item of concern. Then gather information related to performance, composition, life expectancy, use of resources, cost to construct, the factors which comprise its duty, etc. Make graphs, charts,
and tables to present the information. Identify areas of high cost in
fabrication and in operation. Understand the item in general and in
detail.
2. Develop alternatives. First ask the question, Do we even need
this thing, this service at all? Or are we into it by habit or tradition?
If the function is needed, then ask, How else could we accomplish the
same objective? Could we reasonably reduce our expectation or acceptably reduce the magnitude of our effort? Could we eliminate excess material (make it lighter or smaller)? Could we substitute a less
expensive assembly? Could we eliminate an element of assembly labor? Could we standardize a line of multisize units into just a few
components?
In this phase, we learn not to criticize, not to evaluate, for the ‘‘crazies’’ spawn the ‘‘winners.’’ ‘‘Don’t be down on what you are not up on.’’
Be creative and open-minded. Keep a written record of the ideas.
3. Evaluate the alternatives. Having developed ideas for different
ways of doing the same thing, now evaluate the objective and subjective strengths and weaknesses of each alternative. Study performance
HVAC Engineering Fundamentals: Part 1
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4 Chapter One
versus cost—cost both to construct and to operate. Look for the alternative which will work as well or better for the least overall cost. This
will often be a different solution from the original.
Note that an analysis effort solely for the purpose of cutting cost is
not really value engineering; for the objective of minimized life cycle
cost is often compromised. There are enough buildings in this country
with fancy finishes and uncomfortable occupants to attest to this assertion. As John Ruskin said many years ago:
It is unwise to pay too much but it is worse to pay too little. When you
pay too much you lose a little money
5SXE04-0146 3BHE004569R0003 5SHZ0860F0005 励磁IGCT板 ABB
5SXE04-0146 3BHE004569R0003 5SHZ0860F0005 励磁IGCT板 ABB
