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--- hvac:heating [2020/01/19 17:10]
frater_secessus [Heating]
+++ hvac:heating [2021/07/03 12:51]
frater_secessus [contact heating]
@@ Line 43: / Line 43: @@
 === catalytic ===
+Catalytic heaters are called that because they catalyse (degrade with chemistry and temperature) fuel rather than burn it with flame.  Benefits include somewhat higher efficiency (using less fuel, creating less water vapor) and a softer, less direct heat less likely to catch things on fire.
@@ Line 50: / Line 52: @@
 [[https://amzn.to/3am0vxM|{{ https://m.media-amazon.com/images/I/71rDsgejreL._AC_UL320_ML3_.jpg?75}}]]Now discontinued, Coleman made smallish propane catalytic heaters:((ebay links to used ones included below))
-  * the upright [[http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575146719&toolid=10001&campid=5338647285&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3FLH_CAds%3D%26_ex_kw%3D%26_fpos%3D%26_fspt%3D1%26_mPrRngCbx%3D1%26_nkw%3Dcoleman%2Bsportcat%26_sacat%3D%26_sadis%3D%26_sop%3D12%26_udhi%3D%26_udlo%3D%26_fosrp%3D1|SportCat]] (1,500 btu)((440w equivalent))
+  * the upright [[https://www.ebay.com/sch/i.html?LH_CAds=&_ex_kw=&_fpos=&_fspt=1&_mPrRngCbx=1&_nkw=coleman+sportcat&_sacat=&_sadis=&_sop=12&_udhi=&_udlo=&_fosrp=1&mkrid=711-53200-19255-0&siteid=0&mkcid=1&campid=5338647285&toolid=10001&customid=&mkevt=1|SportCat]] (1,500 btu)((440w equivalent))
-  * the tilted [[http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575146719&toolid=10001&campid=5338647285&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3FLH_CAds%3D%26_ex_kw%3D%26_fpos%3D%26_fspt%3D1%26_mPrRngCbx%3D1%26_nkw%3Dcoleman%2Bblackcat%26_sacat%3D%26_sadis%3D%26_sop%3D12%26_udhi%3D%26_udlo%3D%26_fosrp%3D1|BlackCat]] (3,000 btu), etc.  Note: a [[https://amzn.to/3am0vxM|clone of the sportcat]] has appeared.
+  * the tilted [[https://www.ebay.com/sch/i.html?LH_CAds=&_ex_kw=&_fpos=&_fspt=1&_mPrRngCbx=1&_nkw=coleman+blackcat&_sacat=&_sadis=&_sop=12&_udhi=&_udlo=&_fosrp=1&mkrid=711-53200-19255-0&siteid=0&mkcid=1&campid=5338647285&toolid=10001&customid=&mkevt=1|BlackCat]] (3,000 btu), etc.  Note: a [[https://amzn.to/3am0vxM|clone of the sportcat]] has appeared.
-  * fan-forced [[http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575146719&toolid=10001&campid=5338647285&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_odkw%3Dcoleman%2Bsportcat%26_sop%3D12%26_fspt%3D1%26_mPrRngCbx%3D1%26_osacat%3D0%26_from%3DR40%26_trksid%3Dm570.l1313%26_nkw%3Dcoleman%2Bprocat%26_sacat%3D0|ProCat]] (3,000 btu)
+  * fan-forced [[https://www.ebay.com/sch/i.html?_odkw=coleman+sportcat&_sop=12&_fspt=1&_mPrRngCbx=1&_osacat=0&_from=R40&_trksid=m570.l1313&_nkw=coleman+procat&_sacat=0&mkrid=711-53200-19255-0&siteid=0&mkcid=1&campid=5338647285&toolid=10001&customid=&mkevt=1|ProCat]] (3,000 btu)
 ==== diesel heating ====
@@ Line 80: / Line 82: @@
 === flame ===
-[[http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575146719&toolid=10001&campid=5338647285&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3FLH_CAds%3D%26_ex_kw%3D%26_fpos%3D%26_fspt%3D1%26_mPrRngCbx%3D1%26_nkw%3Dcoleman%2Bheat%2Bdrum%26_sacat%3D%26_sadis%3D%26_sop%3D12%26_udhi%3D%26_udlo%3D%26_fosrp%3D1|Heat drums]] were made for some Coleman stoves.
+[[https://www.ebay.com/sch/i.html?LH_CAds=&_ex_kw=&_fpos=&_fspt=1&_mPrRngCbx=1&_nkw=coleman+heat+drum&_sacat=&_sadis=&_sop=12&_udhi=&_udlo=&_fosrp=1&mkrid=711-53200-19255-0&siteid=0&mkcid=1&campid=5338647285&toolid=10001&customid=&mkevt=1|Heat drums]] were made for some Coleman stoves.
 ==== candle ====
-[[https://amzn.to/37agHAg|{{ https://m.media-amazon.com/images/I/91IkqAoxkzL._AC_UL320_ML3_.jpg?75}}]]Candles are an oft-discussed source of heat.  I typical candle will put out something like 240btu((70w equivalent)) of heat. They also give off light and can be used [[https://amzn.to/37agHAg|as a lantern]].
+[[https://amzn.to/37agHAg|{{ https://m.media-amazon.com/images/I/91IkqAoxkzL._AC_UL320_ML3_.jpg?75}}]]Candles are an oft-discussed source of heat.  A candle will put out something like 240btu((70w equivalent)) of heat. They also give off light and can be used [[https://amzn.to/37agHAg|as a lantern]].
 Downsides include soot, tippiness, and lead content in some wicks.  Using candles in a "lantern" fixture may be safer.
-The most common candle lantern is the [[https://amzn.to/2TDFqcd|UCO lantern]], which uses [[https://amzn.to/2v4QTHC|a proprietary candle]] which UCO says produces 450 btu.  They make tealight versions in [[https://amzn.to/38eyNkK|non-collapsible mini]] and [[http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575146719&toolid=10001&campid=5338647285&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_from%3DR40%26_trksid%3Dm570.l1313%26_nkw%3Duco%2Bmicro%2Blantern%26_sacat%3D0|collapsible micro]] sizes.
+The most common candle lantern is the [[https://amzn.to/2TDFqcd|UCO lantern]], which uses [[https://amzn.to/2v4QTHC|a proprietary candle]] which UCO says produces 450 btu.  They make tealight versions in [[https://amzn.to/38eyNkK|non-collapsible mini]] and [[https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=uco+micro+lantern&_sacat=0&mkrid=711-53200-19255-0&siteid=0&mkcid=1&campid=5338647285&toolid=10001&customid=&mkevt=1|collapsible micro]] sizes.
@@ Line 163: / Line 165: @@
 You can also DIY heated gear with [[http://carbonheater.us/|carbon heat strips]].
+Note:  a quirk of electric heating is that the heaters typically don't run at varying power levels for varying heat levels; they vary the ON/OFF duty cycle.  So maybe 100% duty cycle at 100w on HI (average 100w) and 10% duty cycle at 100w on LO -- on for one second and off for 9 seconds (average 10w).  For this reason you may not be able to run a 300w electric blanket on LO (30w average) from a 200w [[electrical:inverter|inverter]].
 ===== comparison =====

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