I would like some advice regarding the poor cooling performance of steam double-effect lithium bromide refrigeration systems
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For Sanyo units, the vacuum level is maintained at around 5–8 mmHg. The temperature of the circulating water is about 30 degrees at the inlet and around 38 degrees at the outlet. The temperature of the low-pressure generator is around 80 degrees, while that of the high-pressure generator is around 120 degrees. The frequency of the solution pump is less than 40； The solution in the absorber sight glass fills the entire glass, and the temperature difference between the cold water inlet and outlet is less than 3 degrees. I would appreciate some guidance from those with more experience.
The solvent system is circulating normally; could it be that the heat exchanger is severely scaled, which affects its heat exchange efficiency and results in a small temperature difference in the cooling water? Personal opinion, for reference only!
First, suspect this issue; then clean the absorber, evaporator, and condenser, but there was no improvement
The liquid level in the key absorber is high, and the low-temperature discharge temperature is low; I don’t know what to do
Too little has been added or the solution concentration is incorrect