Bryan C Aldeghi wrote:
The other idea im toying with involves the basement. We dont have any ductwork in the house- our heating is propane and electric radiant heat. Im thinking of cutting floor vents in the first story and running ductwork down to open near the cement basement floor.
Bryan C Aldeghi wrote:Hmm... I wonder if skylights might help act as clestory windows without quite the same expense.
Bryan C Aldeghi wrote:Trace-
How has that worked out as far as moving humidity around? Do you have any new spots that are extra humid? What do you do about the gents in the summer?
Bryan C Aldeghi wrote:We live in a raised rancher - so half buried basement, and then a ranch house on top. Our ceilings are 8 ft, and the roof line starts just a tad above that. Installing a window in the wall is pretty limited by that ceiling.
All these ideas seem to use the same theory, pull air from a cool part of the house to the warmer, and vent the warmer air out. So its all about drawing air upwards and through. The effect of moving heat will create a breeze. We have a window in the basement facing north which might help with where new air is coming from.
I was reading more and it was emphasized that one of the easiest things to do is ventilate and cool the house at night so that they house vents all the heat from the day before. If you can cool the thermal mass, you can have more time before the house heats up the next day. The cement in our basement is good thermal mass. Perhaps we can add more - a water barrel is fabulous thermal mass that changes temperature slowly. Might have to put something like that in.
I would be reluctant to take on the effort of installing earth tubes at this point. Its a neat idea to file for the future!
Bryan C Aldeghi wrote:We live in central maryland in a raised ranch house on 1/2 acre overlooking a valley. Zone 7b. Summers here are humid and can get hot. Im looking for an effective way to set up a passive air cooling system to keep the house cooler and keep the humidity down. I think a lot can be accomplished with our house by creating conditions that provide air draw through the house. I am also going to work on creating some shade over windows and the south side of the house.
As for air movement, one thought I had was taking a roof vent turbine and installing it attached to a pipe or duct that leads into the house instead of venting the roof. Has anybody tried that? I think it could act as a whole house fan except the fan is wind driven on top of the house to pull air up. If we did that, how would we close it up successfully in the winter?
The other idea im toying with involves the basement. We dont have any ductwork in the house- our heating is propane and electric radiant heat. Im thinking of cutting floor vents in the first story and running ductwork down to open near the cement basement floor. The walls are insulated down there, and the floor is going to be sealed to reduce humidity and moisture transfer. I think these two ideas together will create a stack effect that will draw cool air up from the basement and vent hot air out of the roof.
Any thoughts or ways to expand the concept would be appreciated!