Tech Talk - Water Supply Tanks |
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(603) 226-DYNO |
Read
about the basics of selecting water supply tanks for engine or chassis dynamometer test cells.
"Reprinted from the DYNOmite
Owner's Manual."
Dyno Tech Talk is a compilation or copyrighted material, however, relevant web sites and forums are welcome to link to the Dyno Tech Talk index page.
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Water Supply Tank Considerations Water cooled engines and absorbers both require a cold water supply. If you are using any type of water storage tank, review this information. Bladder tank storage with pressure switch control of the pump is not actually required when using lawn sprinkler type pumps. However, if you decide to use pressurized storage, the pressure switch’s cut-in and cut-out points should be set fairly close together. This helps maintain a more constant pressure at the DYNOmite’s load valve. Consequently, the bladder tank should be quite large in capacity, to prevent short cycling of the pump. A large in or above ground (un-pressurized) storage tank* provides an alternative to discharging hot waste water. If you are going to use a storage tank it must be large enough for your anticipated power levels, run durations, and testing duty cycle. 400 Hp will raise the temperature of 400 gallons of water by 150 degrees Fahrenheit in just 30 minutes While some air cooling of the water occurs just sitting in the tank, for sustained testing you will need a water to air heat exchanger (e.g. a truck radiator and electric fan) to speed the storage tank cooling process. CAUTION: Storage tank water can become contaminated with dangerous bacteria. Contact your plumber and building inspector for instructions on appropriate water treatments and health safeguards. To read more about the treatment of storage tank water you may want to visit sites like: www.tramfloc.com or www.avantecsafe.com. Your local storage tank supplier may also have many useful suggestions. Some on-line suppliers of tanks include www.plastic-mart.com and www.watertanks.com (these are just a couple of many). *Plastic storage tanks listed below (with molded in tie down lugs and gallon markers) are available from US Plastics at 1-800-537-9724 Stock #10120550 gallon capacity
54”
diameter x 67” height 130 pounds
10” fill well 2” female pipe thread bulkhead fitting
(maximum temperature 140 degrees Fahrenheit) |
