Also, heaters run in winter. Most heaters dry out air terribly because it passes large volumes of your house's air over heated coils. It's why you see more commercials for lip balm and lotions in the winter. Drier air inside and out.
need expert advise on glass tops on aquariums
- Thread starter lousybreed
- Start date
evaporation is a result from several things. as someone previously stated all things being the same the larger the surface area exposed the greater the evaporation. also water temperature plays a big role in evaporation because the hotter the water the higher the vapor pressure. The higher the vapor pressure the easier the water evaporates. also water circulation and air circulation over the tank play a role in evaporation. the reason for this i will not get into because it gets a little funky.
on another note heaters do not dry air. the weather does that. when it gets cold the actual water that the air can hold decreases mass wise. For example, and these are all made up numbers, at 80F lets say that a cubic foot of air can hold 10 grams of water, at 32F it would hold something like 5 grams of water. So the relative humidity can be both 100% in each situation but the actual amount of water in the air is waaaay less for the 32F air. The reason why it gets so dry inside is because air passes though your house (air leaks, doors opening, and others) it is the cold air. the heater heats this air up to room temp and its relative humidity drops but the actual amount of water doesn't drop. For example lets say that 10 cubic feet of air enters the house at 32F so it has 50 grams of water (5g/cuft x 10cuft=50grams of water) it now gets heated to 80F (some people like it hot) and now you still have 50 grams of water but at 80F that is only 50% relative humidity. so if the air is completly saturated (foggy outside) and it enters your house it will only give you 50% saturated air. Actually i believe that the "drying" effects are more than my example. hope this helps..
on another note heaters do not dry air. the weather does that. when it gets cold the actual water that the air can hold decreases mass wise. For example, and these are all made up numbers, at 80F lets say that a cubic foot of air can hold 10 grams of water, at 32F it would hold something like 5 grams of water. So the relative humidity can be both 100% in each situation but the actual amount of water in the air is waaaay less for the 32F air. The reason why it gets so dry inside is because air passes though your house (air leaks, doors opening, and others) it is the cold air. the heater heats this air up to room temp and its relative humidity drops but the actual amount of water doesn't drop. For example lets say that 10 cubic feet of air enters the house at 32F so it has 50 grams of water (5g/cuft x 10cuft=50grams of water) it now gets heated to 80F (some people like it hot) and now you still have 50 grams of water but at 80F that is only 50% relative humidity. so if the air is completly saturated (foggy outside) and it enters your house it will only give you 50% saturated air. Actually i believe that the "drying" effects are more than my example. hope this helps..
