Geothermal heat pump - Wikipedia
Click to expand I disagree. It is not a high pressure injection system.
- Стратмор остановился и повернулся к Сьюзан. - Он сказал, что на кольце были выгравированы какие-то буквы. - Буквы. - Да, если верить ему - не английские. - Стратмор приподнял брови, точно ждал объяснений.
The fuel is not pumped into the heater with enough pressure to atomize. The fuel basically trickles into the combustion chamber in a similar manner to an old style kerosene pot heater with a carburetor. My older model Espar doesn't have a glow plug strainer and seals at all. It has a integral fuel pipe built into the burner assembly.
The glow plug fits into a "D" shaped chamber which has a screened "window" out into an "intermediate" burner chamber.
Some things that I've learned.
The fuel doesn't squirt in under pressure. It more flows in like a traditional kerosene pot burner stove with a carburetor. In my old style unit the metal screen enters through a slot to provide a "wick" which lets fuel seep in from the fuel pipe deeper down in the glow plug chamber.
Until cleaning those weep holes with a dental pick and shoving a thin wire right down the fuel pipe I didn't get the heater to actually fire, it just produced white smoke. When I stuck the wire down the fuel pipe it did seem to hit some resistance at first so that pipe may have been restricted.
Differing terms and definitions[ edit ] Ground source heating and cooling This section needs expansion. You can help by adding to it. February Some confusion exists with regard to the terminology of heat pumps and the use of the term "geothermal". Though some confusion arises when the term "geothermal" is also used to apply to temperatures within the first metres of the surface, this is "Earth heat" all the same, though it is largely influenced by stored energy from the sun.
What I learned after it fired. The earlier times that I thought it was firing it was just burning fuel in the glow plug chamber which produced white smoke and did not ignite the main chamber. Actually evaporating might be a better term than "burning". The faulty operation sequence as I recall it.
The engine noise at idle makes it hard to be certain of some noises. After starting the engine the Espar combustion fuel pump from binar to hydronic would cycle for a quick ramp up. After a short fan run cycle to purge the combustion chamber the fuel would pulse in. The heater would begin pouring out white smoke.
I thought that meant it was firing because the combustion fan would ramp up. After ramp up I'd see even more white smoke.
Then the fuel pump would stop, the fan would ramp down, raw diesel fuel would drip out the exhaust I later learned that my muffler packing was soaked with fuel. After if?
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If the 2nd quick earnings honest fuel pump from binar to hydronic, the blower continues to run through a standard cooldown cycle and then locks out for no more attempts until a power down reset. The combustion fan carries that fuel to the exhaust system. Once the muffler stuffing is saturated the fuel will spill out from the exhaust system.
I learned that when the heater actually fires off there was just a little white smoke and then the Espar would begin to roar. You will recognize the roar as opposed to just the fan ramping up. It sounds like a low rubble not just a whine.
The whine is just the fan turning up to very high speed. For each start attempt the fan will run and the fuel pumps until the flame actually temperature sensor kicks into the circuit and realizes that there is no main flame no temperature rise.
It then stops the fuel and the fan ramps back down, but not shut the fan down right away.
As I said, the white smoke I saw is just the glow plug chamber fuel burning evaporating? That made my heater not fire at all. It just made it a wonderful smoke machine. The screen in the "D" shaped glow plug chamber is critical to the main burner ignition.
The screen then acts like a kerosene lamp wick in that the segmented fuel is ignited by the glow plug and the flame travels to the main burner. Update The screen does act like a kerosene lantern wick.
The "window screen" goes up into the fuel pipe chamber. A regulated fairly tiny amount of fuel weeps down onto the screen where it is "segmented" to be ignited by the glow plug. Once it has ignited, the flame goes out into an inner chamber which is between the center round combustion air hole and the "D" shaped glow plug hole.
That opportunity to make money on binary options reviews path via the intermediate chamber is what ignites the main burner.
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When I probed at my screen "weep holes" which are actually a slot for the screen I opened them up too much. With too much fuel leaking into the chamber I think that it is over-whelming my glow plug. It then just creates white smoke and doesn't ignite. I tried different things to repair the screen and slot with no success.
Success ultimately!!! See post 3. I have decided to order a new burner and see if that fixes my problems. At one point I must have hit close to the correct fuel drip combination with my added screen before I opened the "slot weep holes" too much.
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The heater was firing off about every other start sequence. Once it fired it ran perfectly. I decided to improve that starting ratio and really messed up the burner. For engine pre-warming use I should have just been happy to monitor that the heater fired up properly.