question about the max rating for an evaporator

[Cheetos]

I have 2 questions about an evaporator. Please correct me If I'm wrong. This is just my understanding.
1) If an evaporator (hot air/r134a) has a max rating of 10 kW, how do they come up with that value (Q_dot)?
2) For a given system, the evaporator can be pair up with a 10 kW heater, but this doesn't mean the evaporator will remove 10 kW of heat unless I have enough CFM on the air side and enough m_dot on the r134a side?

 

[GT-EGR]

1 - they test that evaporator under a specific and consistent set of test conditions - air temp, air quantity, outdoor temps, etc. - then they post that as it’s capacity. Often they will put those values direct with their performance table, or they will say what standard they used, AHRI for example.

2 - depends on what the heater is for. But you should get the evaporator picked based on the cooling requirements, and not base it on some assumption that Bc it’s paired with that size heater it will do that. That heater size/selection may be based on its own different set of criteria that likely isn’t based on your cooling needs - but is matched up with your cooling airflow - they do share the same airflow/fan so the selections are somewhat inter-related.

If heater is for heating or defrost or dehumidification reheat your heater size will vary when paired with the same evaporator.