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Originally Posted by Zennlasurfer
I was thinking an air-source heat pump would be good, but they are expensive and small ones are hard to find.
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I agree with Ryland, a small air conditioner or a dehumidifier would be easy to find.
Quote:
Originally Posted by Zennlasurfer
1) How would I prevent frost buildup on the evaporator outside? Are there built-in defrost controls in freezers that would still work with this application?
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Frost will happen. If you get a unit with a reversing valve, use that. De-humidifiers have this problem... in fact that is how they de-humidify. So, what you need is something to sense when frosting has happened. de-humidifiers have this, too.
You may need to 'roll your own' controller. Do you know how to use an Arduino?
Quote:
Originally Posted by Zennlasurfer
2) If the compressor is forced to run at low lift for an extended period of time, for instance, when the outside air is 50°F and the inside is at 65°F, would this cause damage to the compressor or prevent the cycle from working?
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No damage from low lift. Only happy compressor.
-AC