guest blogger john hare
A friend mentioned that he had adequate shop air at 150 psi to test my pump. We had just a few minutes between jobs this afternoon to see what would happen. We got positive results.
Sort of. The air volume was not enough to choke the exhaust ports and build up full pressure. The most we could get in the chamber was 40 psig, and the inlet water pressure was 30 psig. I think it is safe to say that 10 psig boost is not going to impress anybody.
I am going to have to rent one of the high volume compressors for a day and tweek the port sizes and inlet water pressures until I get useful results, positive or negative. If I can’t get enough turbine power with the vortex, I will put turbine nozzles in to see what happens then.
The unit I will probably rent is 185 cubic feet per minute at 90 psi. That volume should get a sonic choke on the 6 ports of 1/4″ diameter. If it doesn’t, I will block some ports and try again.
On the bright side, the pump hydraulic bearing is very steady at dry rpms that make you think of earplugs.