"Field Controls make a damper that goes inside the duct that can be adjusted for the amount of cfm that you want to bring into the return. The damper opens to the set amount when the A/H engages."
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Jim Tenhundfeld
- Cincinnati, OH
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Jim Tenhundfeld's Groups
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Best Practices (Resident…
253 members
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Multifamily Buildings
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Jim Tenhundfeld's Discussions
First Law of Themodynamics
3 Replies
I have been thinking alot about this 1st Law, where energy is neither created or destroyed and i am having difficulty understanding this.After viewing a number of PBS shows about the universe is…Continue
Started this discussion. Last reply by Ed Voytovich Aug 9, 2012.
Jim Tenhundfeld's Page
Latest Activity
Jim Tenhundfeld replied to Jack Baikoff's discussion Measuring fresh air intake ducted to a return and no way of measuring from outside.Jim Tenhundfeld commented on Christopher Morin's blog post Clocking a Gas Meter"I agree that clocking the gas meter may indicate the proper gas pressure, but a true combusion anlysis measuring the O2, CO & stack temperature and draft pressure will let you know if the the appliance is operating at its highest…"
Jim Tenhundfeld replied to Curt Kinder's discussion Vampire load suprise - garage door openers"Maybe you could train her (ha ha ha) to turn on the switch when she leaves & turn it off when she comes back. Good luck with that. It would not work with my wife, i am sure of that."
Jim Tenhundfeld replied to Curt Kinder's discussion Vampire load suprise - garage door openers"In my particular case, the garage door opener is plugged into the overhead light. WHen i turn off the power to the light at the light switch, the garage door opener will not operate until the light switch is turned back on. Could you set…"
Jim Tenhundfeld replied to Tom Walther's discussion Any thoughts on the Aeroseal product?"Chris,
There are 3 Aeroseal contractors in the Gr. Cincinnati area. The contractors provide a pre and post total duct leakage test to the home owner. I have seen total duct leakage go from 700cfm down to 100cfm in some of their jobs. …"
Ed Voytovich replied to Jim Tenhundfeld's discussion First Law of Themodynamics"Jim . . . I would add that plenty of things at the quantum level behave differently than what we are used to observing (and understanding) on the larger scale. As an example, You might be interested in this video: …"
Tom Delconte replied to Jim Tenhundfeld's discussion First Law of Themodynamics"Jim, on second thought: Uh oh: entangled particles break second law of thermodynamics . The second law of thermo, or no perpetual motion machines, is being revisited. Quantum teleportation of light particles of 89 miles happened this…"
Tom Delconte replied to Jim Tenhundfeld's discussion First Law of Themodynamics"Yes, Jim, you are right, we mostly deal with the first law using classical thermo. It's still correct.
It's statistical thermo hat deals with quantum states of atoms and particles. String theory and multiple universes are still under…"
Jim Tenhundfeld posted a discussionFirst Law of Themodynamics
I have been thinking alot about this 1st Law, where energy is neither created or destroyed and i am having difficulty understanding this.After viewing a number of PBS shows about the universe is expanding based on Quantam Physics and the discussions of String Theory in which there may be more than one universe, not to mention the discussions of Quarks and Deep Energy which makes up 70% of the univers, DOES THIS LAW STILL MAKE SENSE AND IS IT STILL CORRECT?See More
Jim Tenhundfeld replied to Paul Lasicki's discussion New BPI certifications re-visited"The new certifications are all voluntary and will not be required certifications so i suggest you renew your current BA & EP for 3 years. Some time in the future, they may become required, but until then the exiting certifications should…"
Jim Tenhundfeld joined Sean Lintow Sr's group
Best Practices (Residential)
Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what needs to find it's way to the dust bin of history?See More
Jim Tenhundfeld joined Norm Bourassa's group
Multifamily Buildings
For too long there has been relatively little EE focus on multifamily, but some new programs have recently started. This group gives us a venue to share our experiences on cost effective audit & retrofit strategies and analysis tool needs.See More
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Comment Wall (1 comment)
- At 1:46pm on October 25, 2011,
Diane Chojnowski said… Hi Jim,
Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!
Don't forget to upload your profile photo.
Thanks!
Diane, HEP Moderator
Home Energy Pros
Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy, under the American Recovery and Reinvestment Act) and brought to you in partnership with Home Energy magazine.
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