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Not a Cold Day on the Sand
The Finns have taken sand and turned it into an energy storage battery. Using insulated holding tanks that are 4 meters in diameter by 7 meters high filled with hundreds of tons of sand, the unit can store 8 MW-hours of heat, when the sand is heated to 500-600°C. The heat is used to keep […]
FEATURED TESTIMONIAL – I took the HVAC & Refrigeration exam and I PASSED!!!!
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Get a Grip – From a Dead Spider?
Ok, we are going off the deep end here. Mechanical engineers at Rice University have discovered that dead spiders have an incredible grip. Wolf spiders that they have been doing research on in the lab can pick up as much as 130% of their body weight – when dead that is. Apparently, unlike most other […]
Keeping a Smile on the Mona Lisa in Summer’s Heat
The Louvre Museum and all of Paris have experienced one of the hottest summers in memory. Yet, what’s keeping the Mona Lisa and the millions of visitors cool and comfortable is not immediately obvious. A joint venture company named Fraicheur de Paris [literally – “freshness of Paris”] and jointly owned by EDF (France’s largest energy […]
A New Frontier – Again
On May 25th, 1961, in a special message to Congress, President Kennedy gave the country, and NASA in particular, the goal of landing a man on the moon by the end of the decade. While he did not live to see that goal achieved, it was in July 1969. In December 1972, Apollo 17 would […]
A Battery That Never Goes Dead
The most troublesome problem with wind or solar power systems is the weather. For the energy these systems create there needs to be a way to store the excess energy and then be able to deliver that excess energy precisely when it is needed. One innovative way to store this energy is to use what […]
A Truly Kafkaesque Statue
Art and mechanics meet in Czech artist David Černý’ kinetic sculpture “The Head of Franz Kafka.” With 42 reflective, mechanized layers that rotate individually, it creates an every changing portrait of Kafka’s tortured psyche. It operates from 8AM to 9PM each hour for 15 minutes in Prague, Czechia. On a recent trip I was able to […]
3-D Printed Walls Getting a Thermal Makeover
Building construction using 3-D printing is becoming more common. The idea is to create consistent structures that can be quickly “printed” reducing costs and improving structural integrity. Much work has been done to ensure the printed walls are structurally sound, but now researchers are working on thermal efficiency now. A study has been performed on […]
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