junk heat recovery

nexsuperne · 08-18-12, 02:01 PM

For a while now I have been trying to make an efficient way of recovering most of the 3kw of heat that goes out of the building when my wife runs the tumble dryer in the winter. I have just been given the heat exchanger from a junked bosch condenser dryer. I will now build a box around it that the dryer hose connects to with a thermostatically controlled fan to take the heat from the 2nd floor, through the exchanger when the dryer is on and then blow out on the ground floor. The cost of this.... just $15!

Xringer · 08-18-12, 04:24 PM

3kW=10,236.42 BTUh, or 0.1023638 Therm

08-18-12, 02:01 PM	#1
nexsuperne Helper EcoRenovator Join Date: Feb 2012 Location: 30 miles east of London, UK Posts: 88 Thanks: 12 Thanked 19 Times in 18 Posts	junk heat recovery For a while now I have been trying to make an efficient way of recovering most of the 3kw of heat that goes out of the building when my wife runs the tumble dryer in the winter. I have just been given the heat exchanger from a junked bosch condenser dryer. I will now build a box around it that the dryer hose connects to with a thermostatically controlled fan to take the heat from the 2nd floor, through the exchanger when the dryer is on and then blow out on the ground floor. The cost of this.... just $15!

08-18-12, 04:24 PM	#2
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	3kW=10,236.42 BTUh, or 0.1023638 Therm __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..