PASCO ET-8772 Energy Transfer - Hydro Accessory - Manual (Page 2)

Model No. ET-8772 012-08446A
2 ® ®
Introduction
The Energy Transfer Hydro Accessory (ET-8772) is used for demonstrating hydroelectric
power generation and was designed for use with the ET-Generator (ET-8771).
The impeller fits into the Hydro Accessory housing. The nozzle fits into a spring clip on the
underside of the impeller housing. The nozzle can be connected to a piece of plastic tubing
and external water source.
When the nozzle is connected to an external water source, water runs through the nozzle and
turns the impeller, making the accessory ideal for the study of hydroelectric power
generation.
The supplied nozzles can be cut to a variety of orifice sizes and used for hydroelectric
efficiency studies. The angle where the water stream hits the fin of the turbine is also
adjustable and has an effect on the hydroelectric efficiency.
Setup Procedure
1. Attach the ET-Hydro Accessory housing to the shaft of the ET-Generator (ET-8771) using the
two captured screws and the supplied screwdriver (Figures 1a-c).
2. Slide the housing with turbine (impeller) over the long shaft screw molded to the
Generator. Hold the shaft to prevent it from spinning (Figure 1b).
3. Slide the stand-off nut over the shaft screw and tighten.
4. Insert the pointed end of a plastic nozzle into the spring clip underneath the housing
(Figure 1b).
Figure 1a: ET-Generator Figure 1b: Turbine in ET-Generator
shaft
screw
Standoff nut
Turbine
nozzle
ET-Generator
Figures 1a-c: Attaching the ET-Hydro Accessory to the ET-Generator
Figure 1c: Hydro housing
ET-Generator
nozzle
(side view)
mounted to ET-Generator