Stirling engine: boiler supplies heat and electrical (energy|electricity|not: current)

The idea is (of genius|brilliant|ingenius): (As early as|Already) in the fifties an Italian (car manufacturer|carmaker(AE)|automaker(AE)) (had the idea to place|came up with the idea of placing) a little otto engine into the (heating|boiler) room. (Thereby|so|thus|that way) he killed two birds with one stone: Cooking water (provided the heat|was used for heating) and the crankshaft (drove|was used to drive) a dynamo to (supply|provide) the house with energy.

Now a German company (came up|presented) a further development of this idea (developed this idea further). It took a boiler and installed an engine (below|beneath) the burner. The (effect|result|impact(?)) is the same as above: cettle and motor cooling water supply heat and bath water, the motor provides the (electrical energy|electricity). However, the system is much more (efficient|powerful) since it (uses|works with) a stirling engine. This motor, patented by (priest|reverend[als Anrede]) Robert Sterling in 1816 [al]though being hard to (construct|be constructed| be built) (high pressure in the inside) is a (fascinating|captivating) (improvement|further-development) of the steam engine. The hot driving gas is not supplied from (the exterior|outside) (like with Otto- and Diesel-engines) but is (trapped|enclosed|kept) between two pistons in the inside. (By means of|By using|Due to) a bypass -- a (connection|bridge|shortcut) between upper and lower cylinder -- a temperature gradient (establishes|is created|develops), setting the piston into motion.

They are (located|contained) in a cylinder with a displacement piston at the top and a main piston at the bottom. Both of them are connected to the crankshaft driving the main piston while the displacement runs (along passively|passively with). If it (moves/goes) down[wards] it pushes helium cooled down to 80°C via the bypass into the cylinder top. The gas passes [by] a preheater, a porous heat (storage|store|accumulator) that heats it up to 600°C. Then the helium runs past a burner flame which increases its temperature up to 700°C. By now the helium has such a large pressure that it pushes back via the bypass to the bottom of the cylinder and the main piston and (thus pushing|forces|[de]presses|pushes|pokes|thrusts) the main piston downwards.

The displacement piston has in the meanwhile (surpassed|gone beyond) its low[est] point and (turns upwards|turns to the top) again. The helium can now expand and cools down. A depression (is created|builds up|is generated|develops|is caused|arises|results) sucking the main piston back (and up[wards]|upwards). The helium is compressed and gets pushed up[wards] by a (preparatory|preliminary) heater and burner - the (circle|process|operation) starts (yet again|anew|all over again). The generator in the heating room (yields|delivers|does|performs|achieves) up to 3 kWatt -- which is enough to supply a household with electricity. (Several|Some) demonstration models are already ([up and] running|operating) in the company and if a manufacturer for the (engine|motor) is found, the sterling heating room is to (be prouced in series|go into mass production).

Cooled helium (can|is to) be found between the displacement piston and main piston.

The displacement piston (turns|revolves) down[wards] and (forces|presses|pushes|pokes|thrusts) the gas via the bypass (tube on the left) into the cylinder top.

The helium heated up by the burner (flows|streams) back and (forces|[de]presses|pushes|pokes|thrusts) the main piston down.

The displacement piston (turns|revolves) up[wards] and decompresses the gas. The depression sucks the main piston up[wards].

The four working phases of the stirling motor: The warmth power machine is a brilliant (.. of genius|ingenial) further development of the steam engine. The hot driving gas is not (supplied|fed) from the outside but remains "locked up" in the motor. A continually polarity-reversing pressure gradient sets the piston into motion.

The compact heating power plant for the cellar: The burner of the [domestic] boiler (aims at|is directed towards) a stirling motor. Its cooling water supplies hot water for heating, the turning (movement|motion) creates electricity.

This is what the stirling motor in the boiler looks like.

Vocabulary:

production - business oriented (Verkauf)

manufacturing - (maschinelle) Herstellung

but - don't start sentence with it (bad style!)

mitlaufen - to run (along)

generator - Stromerzeuger

force|[de]press|push|poke|thrust) - [herunter]drücken