Coefficient of performance at 3 is under ideal conditions so don't expect to actually see it. One other thing people don't realize is when it gets frigid like it has this week a heat pump is less efficient than the resistance heat strips the emergency heat uses. Any heat pump will check the coil temp every thirty minutes, hour, or hour and a half to see if it needs defrosting. With the frigid temps we've seen this week it will go into defrost and switch to ac every time it checks. The heat pump uses the same amount of power whether it's running in heat mode or ac mode BUT every time it goes into defrost you are also using the heat strips to counter the ac. That's when it's using more power than plain old resistance heat.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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