Does Anyone Manufacture A Dual Genset/Steam Generator?

http://lmgtfy.com/?q=CHP+diesel+generator+50kVA

CHP doesn't really include superheated steam IIRC.

Lower the pressure and the droplets will boil.

No good. Needs to have enough exergy to sustain gasification of carbon-rich biomass.

ie. at least 270degC at above 1 bar.

It started off at 5 bar, so the problem is.....what, exactly?

Is there a Process Engineer attached to this project that can breathe some sense into it locally?

How many equipment vendors have been approached so far?

So, is your "rejected heat from diesel exhaust" not from a motor vehicle !? . Only I've been thinking for some time now to make use of the hot exhaust gas that rips 60 odd cents from my diesel dollar and throws it out the exhaust pipe in the form of heat --- not to mention the losses from the radiator eh ! .

I thought , as many a car / ute/ truck has a tow bar that a custom built trailer could be made to plug onto the exhaust pipe and run the gas into a flash boiler to produce steam to power a turbine to generate electrickery to power the trailer wheels . Meaning that in short order the trailer will start to push the vehicle till all balances out . [Obviously the less accelarator used the cooler the gas the less the push ]

In regards to waste exhaust heat I also remember seeing an old article showing that in the 1930s some people had channeled the car exhaust through an oven [ custom made & exhaust path separate from the cooking food - also obvious but people had boo hooed the idea saying food tasting of exhaust etc ]

yeah so back to the trailer , it should simply be a mater of hooking it up to the tow ball and pushing the tube over the vehicles tail pipe . If that were so, it could be a few mates build it and it is used by whomever is going to take a long drive -- maybe ! -- as an example - perhaps !? what do you think ? doable ?? is that where you were going ?

The "easiest" heat loss to capture is from the cooling fluid. Unfortunately, we try to keep it under the boiling point as much as possible. So the device would not work for short drives.

A possible "solution" would be to use this heat to run an evaporation chiller to produce the AC that you usually need in the US.

Another possible "solution" would be to feed this heat through a heat pump to "concentrate it" and quickly raise the temperature to a level where you could produce a reasonable amount of high pressure steam to run a small turbine helping the engine.

The problem with all of these is that you will only recuperate a small percentage of the engine's rejections since each conversion will loose 20-50% of the energy handled. After 3-4 steps, there isn't much left. Then you hope that it is enough to move all the hardware you had to add to recuperate this energy. It is a difficult balancing act. Try to keep it simple to maximize the chances of success.

Good luck and have fun trying it.

5 Bar pressure you are referring to is only about 75 psig, and the steam tables indicate a saturation temperature of 306 degrees F (152 C). Depends all on the purpose of the steam as to its utility, but one can utilize the latent heat in steam without the higher temperatures if only space heating is desired. Obviously, more pounds of steam per hour will be available if pressure is lowered to about 15 psig.

Since engine exhaust is still nominally "air", except for oxygen lost in combustion, water vapor added and carbon dioxide added, one could easily determine the air flow into the engine at a given inlet temperature, exhaust "air" flow out at its temperature for a given engine load, then use the heat capacity of the gas to determine the available BTU for heating. Alternatively, the BTU can be estimated from the fuel consumption, known heat value of the fuel, and energy extracted at the output shaft of the engine by difference.

Even if you could recover all the exhaust energy, I doubt there is enough to generate that amount of steam.