Security Seal Facebook Twitter GooglePlus Pinterest Newsletter Sign-up
The Wall
Eugene Silberstein

Eugene Silberstein

Joined on June 18, 2008

Last Post on April 14, 2014

Contact User

Recent Posts

1 2 3 4 5 ... 15 »

Be Aware of Nested Coils

@ April 14, 2014 6:36 AM in AC cleaning condensor coils - inner side seems dirty

Some manufacturers are using nested condenser coils, that actually look like one coil nested inside the other. In instances where the condenser is very dirty, the condenser will need to be carefully lifted and removed from the condensing unit housing and separated to access the space between the sections. Dirt can accumulate there and can be extremely difficult to get out.

As with foam cleaners, be patient. Spray coil, spray cleaner, WAIT, wait a little longer, gently spray to remove foam cleaner.

If you spray water through the coil immediately, you are not giving the cleaner a chance to, well, clean.

Don't rush coil cleaning. Take your time, do it right.

Enjoy the warm weather!

I'm with Techman

@ April 11, 2014 10:31 AM in Filter Dryers and moisture indicators.

As long as the pressure rating is okay, then I say, "GO FOR IT!"

Glad to Hear

@ April 6, 2014 9:31 PM in Freon leak vs. moisture

Al is a good man.

I'm just glad that we were able to clear this up. I'm all about getting accurate information out to my peeps!

The Verdict is in!

@ March 27, 2014 2:13 PM in Freon leak vs. moisture

I spoke with two of my colleagues from the physics department here at the college, and the answer is.....
Moisture cannot enter the system if the presure in the system is higher than the pressure outside of the system.
We must look at the total pressure in each area (inside the system and outside the system) to determine the direction of fluid flow. Fluid flow refers to liquids and gasses. Even though the "water vapor pressure" is higher outside the system than inside the system, given the absence of water vapor inside the system, the total pressure in the system prevents water vapor from entering.
This will hold true unless the pressure inside the system drops to atmospheric, at which point, "all bets are off".
Thanks to Professors Janet Haff and Muhammed Khalik for confirming!

Enjoy!

Glad You Like It!

@ March 27, 2014 1:27 PM in Coffee tastes better in a "THE HVAC PROF" mug!

Glad you like it!
Anything to help you get your caffeine fix!

Memorial Service for Tom Schwarz

@ March 24, 2014 4:47 PM in Memorial Service for Tom Schwarz

Greetings,
I mentioned that I would provide information regarding the memorial for Tom Schwarz. The memorial mass is scheduled as follows:
March 29th at 11am at St Philip Neri Church in Northport
15 Prospect Ave, Northport, NY 11768
(631) 261-2485

Afterwards, from 1-5pm, there will be a gathering at Tom's parent's house at 9 Wilson Street, East Northport.
Any questions, feel free to contact me at (917) 428-0044

Dalton is an Interesting Individual

@ March 23, 2014 12:51 PM in Freon leak vs. moisture

Very good point Harvey.

The only issue is that Dalton's law refers to different gases in a given volume or space, which means that there are no interconnecting pipes or barriers within the space.

The situation at hand is referring to two isolated spaces, as the interior of the duct and the exterior of the duct are not unobstructed from each other. So, in essence, we are talking about two separate volumes here.

I love it when you guys send me back to the books!

I will dig out my old physics books later on (I'll have to dust them off first!) and take a closer look.

I'll let you know what I find!

When you say...

@ March 22, 2014 9:38 AM in Freon leak vs. moisture

When you say "sealed" the duct, are you referring to insulating/wrapping the duct?

Thanks Again for the Kind Words!

@ March 21, 2014 5:08 PM in It's just air!

Thank again.

I had a blast!

I really enjoy spending time with really nice (and super smart) people!

You are all the reason why I love my job so much.

The Thee Legged Stool of Moisture Flow

@ March 21, 2014 4:52 PM in Freon leak vs. moisture

In order to have moisture flow, we need to have three things. We need a source of water, a path for the water to take and a driving force to push the water through the hole.

In the case of a leak in a refrigeration system, we have the source of water (the moisture in the air) and we have the hole (the leak site). What we are missing is the driving force.

In some instances, the driving force can be gravity or capillarity (capillary attraction), but neither are relevant in our refrigeration system scenario.

Since we have pressure pushing out of the system, our driving force is not in the right direction for moisture to be pushed into the system.

No Moisture In.... Most of the Time

@ March 21, 2014 12:54 PM in Freon leak vs. moisture

Under normal conditions, the answer to your question is No. As long as the pressure in the system is above 0 psig, you will not pull any air or moisture into the system.

If the system leak is on the high pressure side of the system, air and moisture will not be pulled into the system. The same holds true if the leak is on the low side and the pressure is above 0 psig.

However, if the leak is on the low side of the system, there is a good chance that, if the compressor is allowed, or forced, to operate, the suction pressure can be brought down to a pressure below 0 psig, thereby allowing air and moisture to enter the system.

So, if the system is off on Low Pressure, it's not a great idea to over-ride the low pressure control to "see if the compressor turns on". You may have just added moisture to the system!

Thanks!

@ March 19, 2014 7:30 AM in It's just air!

It was indeed a great day.

The energy level in the room was amazingly high. You (all of you) made it very easy for me to teach and, for that, I am grateful.

A big "THANK YOU" goes out to all of the vendors and organizations who provided some of the "goodies" you received and who donated items for the raffle.

It was a group effort by all, including those of you who took time out of your busy schedules to be with us.

Give yourselves a big round of applause, as you are the true stars of the day!

As Dan always says, "Thanks for being you".

You made my day!

LAST CALL!

@ March 12, 2014 12:07 PM in LAST CALL!

This is it guys!

Registration for PSYCHROMETRICS WITHOUT TEARS is closing.

Final numbers need to be submitted by close of business today so, if you still haven't registered, now is the time to do it!

Details attached.

See you on Tuesday!

LAST CALL!

@ March 12, 2014 12:06 PM in LAST CALL!

This is it guys!

Registration for PSYCHROMETRICS WITHOUT TEARS is closing.

Final numbers need to be submitted by close of business today so, if you still haven't registered, now is the time to do it!

Details attached.

See you on Tuesday!

LAST CALL!

@ March 12, 2014 12:05 PM in LAST CALL!

This is it guys!

Registration for PSYCHROMETRICS WITHOUT TEARS is closing.

Final numbers need to be submitted by close of business today so, if you still haven't registered, now is the time to do it!

Details attached.

See you on Tuesday!

LAST CALL!

@ March 12, 2014 12:05 PM in LAST CALL!

This is it guys!

Registration for PSYCHROMETRICS WITHOUT TEARS is closing.

Final numbers need to be submitted by close of business today so, if you still haven't registered, now is the time to do it!

Details attached.

See you on Tuesday!

Got Two Seats

@ March 8, 2014 9:56 AM in New Seminar on AIR!

I have two seats with your names on 'em!

Looking forward to seeing you on the 18th!

Always a pleasure.

Very Funny!

@ March 7, 2014 5:11 PM in New Seminar on AIR!

Where out west are you?

If we can get a group together, I have no problem going wherever I am needed.

11 days and counting for this one!

A good time is guaranteed for all!

Let's See it Happen

@ March 1, 2014 4:38 PM in Tom Schwarz has passed away

Let me investigate and see what needs to be done to get things rolling.

Three Weeks to Go!

@ February 24, 2014 9:56 AM in New Seminar on AIR!

Three Weeks to Go!
Still a few seats left!

As part of the day's festivities, we will be conducting a 50/50 raffle to benefit the Ronald McDonald House. Not only will you be buying tickets to benefit this fine organization, you will also have the opportunity to win a number of other neat prizes graciously donated by a number of industry (some not industry) partners, including our own Dan Holohan.

You'll also be able to take advantage of some great deals on books and other instructional materials.

If you haven't yet, check out the information attached at the top of this thread.

Questions? Call me at (917) 428-0044

New Seminar on AIr! Still Seats Left!

@ February 24, 2014 9:55 AM in New Seminar on AIr! Still Seats Left!

New Seminar on AIR!

My new book, PSYCHROMETRICS WITHOUT TEARS will be in print in about 1 week and we will be kicking off my seminar circuit on Long Island in March.

This all day seminar will be held on Tuesday, March 18, 2014 at the Hilton Garden Inn in Westbury, New York.

At this seminar, we will discuss a variety of topics, such as:
Air and Its Properties, The Nuts and Bolts of Humidification, Dehumidification, Heating and Cooling, Sensible Heat Factor/Ratio, Relative and Absolute Humidity, Sensible and Latent Heat, Economizing, Ventilation and many other topics related to air.

If you are an industry professional who deals with air, be it heating or cooling, this seminar is for you.

Attendees will be fed two ways.... Your belly and your brain! What could be better than that?

You'll spend over 6 hours of class time learning about all things AIR, and also receive a copy of PSYCHROMETRICS WITHOUT TEARS, hot off the presses!

All of the seminar details are attached here, along with your registration form. You can mail it, fax it, scan it and e-mail it.... whatever works for you. You can also pick up the phone and call me at (917) 428-0044 and register over the phone.

Space is limited so register early!

I look forward to seeing you in March!

Eugene

Three Weeks to Go!

@ February 24, 2014 9:53 AM in New Seminar on AIR!

Still a few seats left!

As part of the day's festivities, we will be conducting a 50/50 raffle to benefit the Ronald McDonald House. Not only will you be buying tickets to benefit this fine organization, you will also have the opportunity to win a number of other neat prizes graciously donated by a number of industry (some not industry) partners.

You'll also be able to take advantage of some great deals on books and other instructional materials.

If you haven't yet, check out the attached information.

Questions? Call me at (917) 428-0044
1 2 3 4 5 ... 15 »