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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Yuri<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I am complimenting you on the solution you propose for the following problem (running the stove below the rated power).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>From your website:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Tahoma","sans-serif"'>“В наше время этот принцип сжигания топлива заложен в котлах Стропува, литовского производства. Горит он от нескольких часов до нескольких суток. Горит не плохо. Но есть проблема, при сжигании топлива в малых интервалах мощностей на стенках котла осаждается дёготь. Это дурно пахнущая тягучая жидкость, запах от которой нельзя передать. При постоянном подходе к котлу этот дурной запах переносится на одежду. Причиной этого явления является то, что температура в очаге горения не достаточна для того чтобы полностью испарить горючие смолы.”<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span class=longtext><span lang=EN style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#333333'>In our time this principle was clear in the combustion boilers </span></span><span class=longtext><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#333333'>for </span></span><span class=longtext><span lang=EN style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#333333'>Stropuva, Lithuanian production. When it is lit for a few hours to several days at a time burning is not bad. But there is a problem with fuel combustion for shorter intervals which is deposition of tar on the inside walls of the boiler. This is a bad-smelling viscous liquid, the smell of which cannot be removed. If you are constantly near to the boiler, this odor is transferred to the clothing.</span></span><span class=longtext><span lang=EN style='font-size:9.0pt'> </span></span><span class=longtext><span lang=EN style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#333333'>The reason for this phenomenon is that the combustion temperature is not high enough to fully evaporate the flammable resin.</span></span><span lang=EN style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#333333'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN style='font-family:"Arial","sans-serif";color:#333333'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The direct cause is excessive removal of heat from a system optimised to operate at a higher power level. The solution which you have also implemented is reducing the size of the chamber and at the same time increasing the thickness of the brick (to reduce the rate of heat extraction). The combination should eliminate the formation of tars. This problem we see in a lot of domestic stoves that are left burning for a long time. As the heat exchanger is built for high power (useful in mid-winter) it takes out too much heat at times when the fuel load is small or when the fire is dying down. When burning coal it can lead to PM emissions late into the burn because of sub-optimal combustion conditions. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The conical shape (larger at the top than the bottom) is the same solution developed in Ulaanbaatar and I am happy to hear confirmation of this approach from the Caucuses. As the gases combust and create a larger volume of combustion products, the conical combustion chamber volume is increased to maintain a (reasonably) constant gas velocity. The result is that the combustion chamber can be quite small while still giving an acceptable heat exchange efficiency.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>View from the top:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><img width=337 height=249 id="Picture_x0020_1" src="cid:image003.jpg@01CCBD87.8E0FDA60" alt="Description: Description: cid:image003.jpg@01CCBD87.8E0FDA60"></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>3D drawing: The grooved blocks of ceramic are secondary air entrances. The fuel is stored between the black plates. The grate sits between the blue plates.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><img width=331 height=309 id="Picture_x0020_2" src="cid:image004.jpg@01CCBD89.64F838A0" alt="Description: cid:image004.jpg@01CCBD89.64F838A0"></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The system was able to achieve long periods of burn with CO emissions of less than 10 mg/m<sup>3</sup> at a power of 5-7 kW. The thermal efficiency is just over 80% (as a space heater). Cooking efficiency is about 25%.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The dropping plate shown at 30-10-2011 20:38 is very interesting. Very. It might also be employed to make small charcoal producing cookers because it brings the gases into a confined space for burning above.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Crispin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Здравствуйте!</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Я из России. У меня много печей и котлов, которые я придумал сам</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Все они находятся в моём блоге, по адресу:</span><o:p></o:p></p></div><div><p class=MsoNormal><a href="http://blogs.mail.ru/list/user-05/"><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>http://blogs.mail.ru/list/user-05/</span></a><span style='color:black'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Если хотите, можете вводить их в рассылки. С уважением, Юрий</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>---------------------------------------------------------------------------------------------------</span><o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:"Arial","sans-serif";color:#333333;background:whitesmoke'>Hello!<br>I am from Russia. I have a lot of furnaces and boilers, which I invented myself<br>All of them are on my blog at:<br><a href="http://blogs.mail.ru/list/user-05/">http://blogs.mail.ru/list/user-05/</a><br>If you prefer, you can enter them in the mail. Regards, Yuri</span><o:p></o:p></p></div></div></body></html>