Joey Henderson and Nick Goode continue on with the six key lessons instructors should teach their students using the TU-406C Residential Heat Pump Unit. Below is the summarized transcription from the second part of the video.
Lesson #5: How to Measure the Dry Bulb and Wet Bulb on the Return in the Supply
Instructors can demonstrate sensible heat and latent heat with the dry bulb and wet bulb. As air moves across the evaporator coil, students can measure both the dry bulb and wet bulb to see how it’s affected by a dirty filter or low air flow.
People still have no idea how important it is to measure this. The TU-406C Residential Heat Pump unit shows how it removes moisture, which is the number one load on the air conditioner.
Lesson #6: Indoor Blower Motor
Students can clearly see the permanent split capacitor on the indoor blower motor. To see how effective the air flow is, just connect an amp meter. By creating a restriction with the damper, it shows the class how to measure the effects of air flow on the motor without having to take out a lot of extra instruments. It will simulate an increase in static pressure so that students can actually see the effects of the amp draw on the motor itself.
By opening the damper back up, the amperage on the motor will actually increase which reveals how more air flow across the motor pulls more amps (current). While students think the amperage would go up because of the restriction, the reality is that the motor is working less because it’s moving less air. This can be shown in real time.
Lesson #6: How Different Filters Affect the Residential Heat Pump System
An entire lesson plan can be created on how different filters can affect the airflow. Make sure to point out the arrow on the filter and show the specific direction the filter goes. Students can see the effects on pressure, temperature, wet bulb, dry bulb, air flow and all kinds of dynamics.
Demonstrate a Residential Heat Pump System with the TU-406C
This residential heat pump simulator makes it easy to demonstrate Joey’s lessons. Download the training unit’s spec sheet or give us a call today at 716-699-2031 to request a quote.