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prabhakar_deosthali
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re: Smart metal enables solid-state refrigerant
prabhakar_deosthali   8/2/2010 7:22:59 AM
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This technology looks to be promising enough in reducing effective carbon emission and green house gases , by elimination of CFCs and by reduction in Electricity consumption. Early commercialization of such technologies is the need of the hour.

RDB
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re: Smart metal enables solid-state refrigerant
RDB   7/21/2010 5:10:54 AM
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I see the number now in the picture caption...175% more efficient. I assume it translates into roughly 3x the efficiency, meaning 1/3 the electricity usage.

RDB
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re: Smart metal enables solid-state refrigerant
RDB   7/20/2010 11:55:35 PM
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The article states that this technology will allow refrigeration without the emission of greenhouse gasses. That sounds like a distortion to me, the majority of greenhouse gas emission for refrigeration systems is in the electricity they consume. Refrigerants are considered a greenhouse gas, but are not normally released in refrigerant operations. I assume this process still consumes electricity. Perhaps it is more efficient than a gas-liquid refrigerant cycle. Would be helpful if there the article contained some estimates on efficiency relative to current solutions in the article.

R_Colin_Johnson
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re: Smart metal enables solid-state refrigerant
R_Colin_Johnson   7/20/2010 9:46:08 PM
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Does anyone know of other efforts to harness these thermoelastic shape memory alloys? I know that nitinol wire has been used in robotics, because when heated above its transformation temperature it can be stretched to 30 times its normal length, which it recovers when it cools. Also if you stretch it when its already cool, it will "remember" its original length when heated to its transformation temperature. I'm not familiar with other applications, though. Does anyone know of other efforts to harness these thermoelastic shape memory alloys?

Robotics Developer
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re: Smart metal enables solid-state refrigerant
Robotics Developer   7/20/2010 9:20:29 PM
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An interesting technology for cooling with a number of potential applications. I wonder if it could be used to provide cooling for ICs that enable them to run faster while dissipating the die heat? Could the process be reversed like a heat pump to extract geothermal heat or to generate power? I would love to know more about how this works.

elPresidente
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re: Smart metal enables solid-state refrigerant
elPresidente   7/20/2010 8:17:10 PM
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I'm sorry, but the Mrs. is not going to allow what's pictured in her kitchen.

Kinnar
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re: Smart metal enables solid-state refrigerant
Kinnar   7/20/2010 7:08:20 PM
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So, the world will be going more greener!!! It will enable ACs running without Gas. Solid ACs!!!



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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