Hey all - Looking to do some research into adding a air conditioning unit to a 351. I have been reading some threads on various boards debting the BTU question. It sounds like the higher btu is what I am interested in. Could any of you chim in on how many btu you have per the size of your boat? Also, what brands of units should I be looking into? Thanks for any help you may be able to provide!
Air conditioning install into a B351? What size?
- Thread starter jpeac2
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Ipeac2, The question of BTU's is best
considered by answering two more questions. How high is the relative humidity and how high is the air temp? To cool a space below the dew point means that you must remove the water vapor from the air. Water vapor has a latent heat of 1000 BTU's per pound. Air has a specific heat of 1 BTU per pound. In a room ten feet by twelve feet by eight feet high you have 76 pounds of air. This means that you can cool the room 13 degrees with 1000 BTU's. When you hit the dew point you will require 1000 BTU's to remove one pint of water from the air before you can get a further drop in air temp.. You also have a Heat load from the sunshine and from the outside air that comes in with the people. After you have done all of the calculations, you buy the unit that will fit the hole and has at least the capacity you need. But even a small one will reduce the RH and make the boat more comfortable.
considered by answering two more questions. How high is the relative humidity and how high is the air temp? To cool a space below the dew point means that you must remove the water vapor from the air. Water vapor has a latent heat of 1000 BTU's per pound. Air has a specific heat of 1 BTU per pound. In a room ten feet by twelve feet by eight feet high you have 76 pounds of air. This means that you can cool the room 13 degrees with 1000 BTU's. When you hit the dew point you will require 1000 BTU's to remove one pint of water from the air before you can get a further drop in air temp.. You also have a Heat load from the sunshine and from the outside air that comes in with the people. After you have done all of the calculations, you buy the unit that will fit the hole and has at least the capacity you need. But even a small one will reduce the RH and make the boat more comfortable.
btu's
16500 on a hunter 30.. inside today was 72 F Outside was mid 80's F We are right on the gulf with high humidity. Unit was from ocean breeze uin stuart ,FL. Very customer oriented people and have over 30 yrs experince in the business. Installation was straight forward enough. Dit it my self in 2 days or about 9 hours total. Link below Charles Creel
16500 on a hunter 30.. inside today was 72 F Outside was mid 80's F We are right on the gulf with high humidity. Unit was from ocean breeze uin stuart ,FL. Very customer oriented people and have over 30 yrs experince in the business. Installation was straight forward enough. Dit it my self in 2 days or about 9 hours total. Link below Charles Creel
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