Quote:
Originally Posted by Student 07
It would be better to store the heat when the ASHP isn’t running and use the heat when the ASHP needs it. For example a solar green house.
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Your train of thought is correct, but you need to take one more step: Instead of storing extra heat in larger volumes of air, store it in a larger mass. Stones, bricks, sand, water, for example, or a phase-change material would be better. Using more mass instead of volume requires much less space and reduces losses. And is probably cheaper than building a 10'x10'x10' greenhouse
But even without lots of storage capacity, an ASHP with a prewarmer will still be more efficient than one without (as long as the intake isn't restricted), even if it's only by a few watts per minute.