Feedback on 12V water heater element as solar diversion load

I think the only thing "running" when an absorption refrigerator duty cycle is on is that an element is heating the ammonia. So I think I would be bypassing any refrigerator thermostat and just applying a bit of heat to the ammonia. Since the diversion load current wattage would never be even as much as the OEM 120v element, I'm not sure if it really gets hot enough to achieve the cooling cycle. I don't fully understand the systems, just the high level idea.