Best Of
Re: 1 Ton = 400 CFM??
I have adjusted away from the 100 CFM per 3000 BTU of cooling standard on many occasions. Most of my work was done in the southern tip of New Jersey. Cape May County is a peninsula at the southern most part of New Jersey that is surrounded by large bodies of water. The Atlantic Ocean to the east and south, and the Delaware Bay to the west. So the prevailing wind will often blow humid air from the evaporating waters around this area causing an unusually high amounts of relative humidity. The latent heat that must be removed from that air, in order to allow the sensible temperature to drop, often requires a slightly larger piece of equipment for the same exact home that may be located in the central and northern part of the state. This often sets the number at 80 CFM per 3000 BTU of cooling. or 100 CFM per 3750 BTU of cooling.
As @pecmsg so eloquently stated: "it's a starting point".
Do you know why 12,000 is called one ton of cooling?
Back when refrigeration was in the early stages it was determined that it took a certain amount of heat to melt one ton of ice (2000 lbs.) over a 24 hour period. That number was approximately 288,000 BTU. In order to get the BTU per hour, you would divide 288,000 by 24 Hours in order to come up with 12,000 BTU per hour. That number became the standard way to measure refrigeration equipment in 1903 or 1904. Only a few short months after Willis Carrier invented Air Conditioning.
Re: Another acquisition: ASC acquires Ward
Here we are a year and a half later.
Anvil has dismantled Ward and demolishing their foundries (BUYER FOUND). Ward will cease to exist.
They have sent out a price increase letter today, which will increase the cost of the staple BCI fittings by a very significant amount.
dko
Re: Another acquisition: ASC acquires Ward
They are quickly ruining the company.
Re: Steam boilers that are piped wrong
Give them a copy of my book, We Got Steam Heat. That will convince they without a doubt.
Re: Steam boilers that are piped wrong
Many of the old time boilers just came up out of the boiler into the supply pipe with no header. If they had two supplies and had two tapping's the boiler was the header.
The newer boilers hold less water and a smaller steam to water disengaging area=more velocity. You need the header to slow things down to separate the steam and water
Re: Steam boilers that are piped wrong
We see poor installs often. I question how a horribly piped boiler or system can sometimes last thirty, forty or even fifty years. I am not talking about antique boilers that were converted from coal to oil to gas. I am talking about relatively modern boilers manufactured in the last fifty years. I have also seen boilers piped near perfectly last as little as nine years. I think a lot of it depends on the boiler design, the water quality and maintenance.
Show the customer how you plan to pipe the boiler and why it is important. Also, let them know the system will perform better when your done, and why. Do not pick on the last guy.
Re: 1 Ton = 400 CFM??
Depends on where you are. Your probably doing 350 in Florida, Texass or very humid climates, and 450 in a dry climate like Arizona.
