MHA Research Heater
photos by Norbert Senf
Go to Testing Data
Oct 31/15: Heater build Dec 20/15: Modification 01 (firebox) Feb 15/16: Modifications 02 Jan 14/17: Instrumentation Jan 19/18: Modifications 03 (chimney) Jan 29/18: Modifications 04 (heat exchanger)
January 18/19 Modifications: -- Chimney modification to conform to EPA laboratory testing conditionsChimney modified to be substantially equivalent to NSPS (EPA) certification testing, which requires the exit to be inside the laboratory at a height of 15' +/- 1'. ![](2018/MHA%20Research%20Heater/180118%20chimney%20mod.JPG) Height of Tee is at 17'. T is 7" diameter, as is the chimney below. This is vented above by 6" diameter insulated chimney. The T bleeds air into the chimney and brings the pressure at the junction to 0. This sets the chimney draft equivalent to a 17' high inside exit chimney.
January 29/18 Modifications: -- Reconfigure channels from parallel to serial![](http://heatkit.com/research/2016/MHA%20research%20heater/DSC_2208b.JPG) Heater firebox viewed from instrumentation room side.
![](2018/MHA%20Research%20Heater/Modifications/18012904.JPG) Firebox is connected to heat exchanger via insulated chimney pipe. Heat exchanger exits into heated bench. Heated bench is connected to chimney.
![](2018/MHA%20Research%20Heater/Modifications/18012901b.JPG) Cross section through firebox, insulated connecting pipe, and heat exchanger. Gases exit at bottom right into heated bench .
![](2018/MHA%20Research%20Heater/Modifications/18012902b.JPG) Reconfigured heat exchanger.
![](2018/MHA%20Research%20Heater/Modifications/20180129_081205.jpg) Original layout with the heat exchanger ceiling removed. Around the edge is a ceramic fiber gasket. A thermocoupld and pressure sensor tap are visible
![](2018/MHA%20Research%20Heater/Modifications/18012903.JPG) View from above.
http://heatkit.com/research/MHA%20research%20heater%20mods03.htmhttp://heatkit.com/research/MHA%20research%20heater%20mods03.htmhttp://heatkit.com/research/MHA%20research%20heater%20mods03.htmhttp://heatkit.com/research/MHA%20research%20heater%20mods03.htm Same view. Composite photo of existing condition.
![](2018/MHA%20Research%20Heater/Modifications/20180129_083344.jpg) The chimney pipe inlet area was repaired.
![](2018/MHA%20Research%20Heater/Modifications/20180129_083858.jpg) Bricks added to reconfigure the gas flow.
Go to Testing Data
Check out other current
research at Lopez Labs
|