What do baffles do in a boiler?
Baffles are an integral part of the shell and tube heat exchanger design. A baffle is designed to support tube bundles, increase maximum efficiency and direct the flow of fluids through the boiler. The use of baffles is decided on size, cost and their ability to lend support to the tube bundles and direct flow.
Why is my oil boiler sooting up?
If you see soot or smoke emanating from your oil-fired boiler, sometimes accompanied by increased boiler noise, the condition is usually caused by “puffback.” A puffback occurs when unburned oil in the bottom of the combustion chamber is heated up and explodes. This can damage the boiler.
How many baffles do I need in attic?
The general rule of thumb on the amount of total attic vent space needed is to have at least one square foot of vent space for every 150 square feet of attic area.
Do you need baffles in attic?
Baffles are installed in the attic (or should be), wherever there is an intake vent (soffit vent). Baffles ensure proper airflow into your attic space. Baffles prevent vents from getting clogged by insulation and ensure a clear channel for outside air to move into the attic through soffit vents.
Do I need baffles with batt insulation?
The baffles are needed when the insulation, whether it be blown in or batts, gets crammed into a tight spot, for example, where the roof meets the floor joists. Using baffles in those areas allow insulation to meet at those tight places, and still allow air flow to occur to the soffit vents.
Is it OK to insulate roof rafters?
Insulating between rafters will do no good, because the attic should be ventilated, and the rafter insulation would be between two unheated spaces. Moisture buildup in the attic is a concern because it can condense into water, often causing mold. Good ventilation, from soffit vents and a ridge vent, will stop that.
What are baffles on a motorcycle?
An exhaust baffle is an acoustically tuned metallic chamber placed inside a motor vehicle’s muffler to cancel out, or muffle, the sound from the vehicle’s exhaust outlet. They are used in almost all vehicles, from cars to motorcycles and even trucks.
Does a finished attic need to be vented?
When done correctly, attic venting can reduce the potential for condensation in winter and summer. Even when outside air is hot and humid, if the attic space is air-sealed from the interior, it is much hotter than outside air. The hotter the air, the more moisture (i.e. absolute humidity) the air space can hold.
What happens if attic is not vented?
But in homes without appropriate insulation and ventilation in the attic, heat migrates. Meanwhile, because hot air is full of moisture, all that water hanging out in your attic is causing condensation to build up. Excess heat and condensation can cause major damage to your roof and roofing materials.
Can you over vent an attic?
It’s possible to have too much exhaust ventilation, but you cannot have too much intake ventilation. If there is more intake ventilation than the attic’s square footage requires, it’s not problematic because any excess intake converts to “exhaust” on the leeward side of the house.
Can you spray foam a vented attic?
Spray foam insulation in vented attics will resist any heat transfer from that airflow, so you don’t have to worry about the rest of your house getting hot as well.
Should I spray foam my attic floor?
For a traditional attic, there is no need to use foam throughout the entire space, as you’ll get the most value out of the first couple inches. This means installing spray foam to a depth of at least 2″ on the entire attic floor to completely seal everything up.
Do you need ventilation with spray foam?
An unvented attic air sealed with spray foam insulation limits outdoor air entry and as a result indoor combustion air should not be considered available for fuel-fired combustion appliances located within the attic space. If spray foam is used, a vent space may still be needed directly under the roof deck.
Do you need soffit vents with spray foam?
Most don’t. They know roofing materials, underlayments, flashing, and attic ventilation. Some know more than others, of course, but you should probably assume the worst any time a roofer comes to your spray foam insulated home. Sealed attics should not have any type of attic ventilation connecting it to the outside.
Should I use open cell or closed cell foam?
Due to the lighter density of open cell foam, it will perform much better than closed cell when it comes to sound dampening. The thicker, softer material of open cell will reduce sound waves much more efficiently than that of the tight, dense closed cell foam.
Is spray foam worth the cost?
Spray foam insulation is typically two to three times more expensive than cellulose or fiberglass insulation. Spray foam insulation does cost more than traditional options, but over time it pays you back in energy savings, and you can’t really put a price on the comfort of your family.