To expel hot air out of the kitchen,"A" has an exhaust fan fitted on the window of her kitchen and "B" has a similar exhaust fan fitted on the wall near the ceiling of her kitchen, which of the exhaust fan will expel the hot air more effectively? Explain why
Kitchen B - Because Hot air rises up as it is lighter. It move out more effectively if exhaust fan is near ceiling. and fresh air comes in kitchen via window.
Kitchen A - exhaust fan on window do work but not as effective as fan at ceiling, circulation of fresh and hot air is from same site so it is not so effective and some hot air trapped at ceiling.
Kitchen A - exhaust fan on window do work but not as effective as fan at ceiling, circulation of fresh and hot air is from same site so it is not so effective and some hot air trapped at ceiling.