If more plates are later added to the same heat exchanger, can you reduce the flow of water into the cold side and still cool the water exiting the hot side whose flow rate remains unchanged to the same temperature as before?
Call the manufacturer of the heat exchanger and ask them this queation. They will be glad to answer your question. There must be a manufacturer's nameplate on the exchanger.
Plate warmth exchangers are a touch extremely professional technologies and this way of steerage you want isn't available in any however the most regular kinds. have you ever tried an cyber web search for for plate warmth exchangers and plate and body warmth exchangers. There are countless manufacturers available?