Why do pump are placed between evaporator and condenser instead of expansion device in AHT?

we know that pump is used to deliver to a much higher energy level, and it needs to increase pressure to evaporator pressure. Doesnt mean it boils to

we know that pump is used to deliver to a much higher energy level, and it needs to increase pressure to evaporator pressure. Doesn't mean it boils to higher pressure and temperature in the evaporator. i'm confused with the process of AHT. how can it absorb heat from a space? please help! thank you

or:we know that pump is used to deliver to a much higher energy level, and it needs to increase pressure to evaporator pressure. Doesn't mean it boils to higher pressure and temperature in the evaporator. i'm confused with the process of AHT. how can it absorb heat from a space? please help! thank you

or:AHT Cooling Systems is an Austrian company, active in both branches of industrial refrigeration and deep freezing, while its main areas of business are fridges and deep freezers for supermarkets, ice cream freezers and bottle coolers.en.wikipedia.org/wiki/AHT_Cooling_SystemsYou might have meant something different by those letters. You need to remember that nobody knows what you are talking about until you explain. If we have to look things up, we report back with whatever we find, and that Is what I found. You should post a link to a picture of the system you are asking about because names of parts sometimes vary.

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