value_engineering_10-21-15

Confidential © 2015, Vavni Inc. All rights reservedRonald GD Davis

Value Engineering

9/11/15

Simplification of Complex Systems

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Value Engineering - Example #1

9/10/15

Question: What is Value Engineering ?Answer: Value Engineering is centered around cost cutting. Cost of materials, piece part prices, reducing manufacturing time, and repair costs. It is also about simplifying complex systems, Improving life cycle and improved product acceptance. Value engineering is also about improving form, fit and function when ever possible.

Question: Who needs value engineering ?Answer: Everyone who designs systems needs to be familiar with value engineering. I believe it helps lower the TCO to customers to improve gross margins.

Question: I have a system which is not an electronic one where it seems that most of the focus for value engineering is these days. How can I find people who have a value engineering focus for something like plumbing ?Answer: Any Mechanical Engineer or Product Design person who uses value engineering can cross the engineering disciplines in various industries to value engineer products whose devices and features bare no resemblances to those whose primary focus is the electronics packaging industry. Value engineering is in part a mindset to question what can be done to simplify and cost reduce in any given system.




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I am going to give a value engineering example using plumbing which I have never value engineered before to demonstrate where to find cost savings.

Issue: There are 15 components which represent manufacturing time, reliability, and piece part costs. How do I find value in something like this ?

CAP




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¼ Turn Double Valve Actuator Built into the Cap.

Dual Feed / Dual Return.

Value Solution: Reduce the 15 components down to 1. Increase flexibility by added additional inlet and return line connections. Cap unused side(s) as necessary to effectively simplify flow paths.




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Value Engineering – Example #2

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Water cooled micro data center Opportunity:

A custom came to us and said we have a problem. We have cabinets filled with our gear some are 5KW, some 10KW, a few 20KW and two 30KW cabinets and we need to cool them all with one solution. The contractor we have chosen wants to cool all the equipment using the same equipment. We want to save money by not using as much energy and use only one cooling system. Can you provide a solution which only allows us to use as much energy as we need to cool each individual cabinet ? We don’t want HVAC above the building we would prefer that everything be underground. These were the ideas we started with.

1. Water cooling but must be below the data center white space. 2. Chill water with differing flow rates can vary the temperature for the high & low

power requirements. 3. Single large long life span axial fan to supply all the cabinets with improved mixing. 4. Short path from the fan, chiller and cabinets to ensure high efficiency.

Our solution.. Next slide..




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Water Chillers which feed the Radiators:

A pair of water chillers which feed each of the radiators on the previous slide will provide the a variety of temperatures and water pressures / flow rates when mixed with cool and very cool chill water systems / heat exchangers.

Each radiator on the previous page will then be fed with the correct temperature water and water flow rate to ensure each cabinet zone achieves the correct air temperature as required for the inlet air of each cabinet.

Routine checks with thermal anemometers will ensure the temperature and air flow rate calibrations. Additionally, the floor tiles will have louvers which angle the air to the desired locations of the cabinets for optimal zone by zone needs within a cabinet.

Exhaust air mixing is increased through the fan so that the heated air can be spread across the radiators. This is called load spreading. It is a good way to make use of equipment so the Thermal Deltas on one or two radiators is not at the limit of their capabilities.



Value Engineering9/11/15

THANK YOU


value_engineering_10-21-15

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