Peter Mckinlay

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since Aug 30, 2011
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Recent posts by Peter Mckinlay

Mac abees wrote:Ok here goes! I need to build an over shot water wheel, head does not matter, speed does not matter. All i need to figure out is how big, wide and deep a wheel I need to get at least 70 to 80 horse power at the shaft if some one can help me with that i can build a generator system anywhere. I will explain the rest after my patent lol. Eveyone one seems to be hooked on speed or rpms thats not what you need. The wheel should be at a snails pace but geared to spin a generator at 3600 rpm. Its right here in my head but to actually work it out in the real world i need help at this point the rest is easy. Im using just the pure natural weight of the water to turn the wheel.

Hello Mac,

A horsepower is x poundage weight per second (see web). A gallon of water weighs 10 pounds. The time of water weight being held is when the bucket is full to start of drain out.
10 years ago

Mike adams wrote:Hi, I have a old abandoned pool in the back yard. It hasn't been in use for at least 5 years. I was wondering if it would be a good idea to water my plants with the water that is currently in the pool. If not I am thinking of draning it out and converting it into a rainwater storage tank, but I would much rather save the work and use the water currently in the pool if it is safe to use.

Thanks for any help. [/quote)

No problems. Easy test is pour a cup full on the lawn, if not die then all's well.

10 years ago

PS Dale,

Complete with solar collector, and a wet back. Follow Coles and use CO2 as the refrigerant and one only need heating above -30*C.
10 years ago

Dale Hodgins wrote:   Rocket stove/refrigerator. The propane powered refrigerators which are common in recreational vehicles have no moving parts other than the hot and cold gases flowing through their expansion tanks, condensers, and heat exchangers. Without getting into huge detail on the workings of these machines just know that the fridge works when the boiler section is heated with a flame.

     I am new to computers so I'm hoping someone familiar with this type of fridge can glean some graphics off the net and drop it under my post.

    So on the simplest units there's a section of pipe called the boiler which needs to be heated. Rather than purchasing expensive propane this could be accomplished simply by attaching the boiler to the side of a rocket stove heat riser or placing this same boiler inside the riser provided it can withstand that sort of extreme heat. It wouldn't take much of a rocket stove to produce a much larger fire than my propane fridge has.

    This unit would use a light metal rocket stove with no thermal mass similar to what is used for cooking in the tropics. Trying to run this off your RMH would cause overheating in the summer when the refrigerator needs to be fired more often.

    One large scale boiler tube should therefore be able to handle a household size refrigerator and freezer. For my purposes I envision a walk in freezer like you find in stores and restaurants with a small refrigerator section accessible via regular refrigerator doors set in the side of the unit.

    I can imagine building this on the south side of a house so that concentrated sunlight could power the fridge in the summer. Alternatively, the rocket could power it all year as long as it can be separated from the house so as to not cause overheating. The stove effluent could be piped to a Coppola  where it would initiate convective currents and actually aid in cooling the house.

    So, in winter we get free power for the refrigerator since all of the heat used by the refrigerator remains within the house and in summer the rocket stove powers the refrigerator and the waste heat powers a Coppola exhaust system.   A large refrigeration unit with plenty of thermal mass in the form of food or ice  could be fired when ever Coppola venting or hot water are required.

    In environments like mine where summer temperatures aren't that extreme and all this venting may be overkill the waste heat from the flue pipe could simply be used to heat water.

    If any of you have heard of such a unit please let me know about it. Otherwise I'll bide my time until the next time I am asked to demolish a restaurant and start monkeying. I sold all of the components including insulated walls from an old cooler three years ago for $500 since storage was an issue . Now I need one,

No problems, put a small diversion pipe in your stove pipe. This is to restrict heat flow, even better with a car thermostat fitted in reverse, too much heat and your fridge is a freezer
10 years ago