From your question, I know that your place is Xiamen. Considering the regional climate and building types, the first library adopted a water-cooled chiller with a fan coil at the end, and the cooling tower provided cooling water. Refrigeration hosts should be selected according to space and load, generally screw machines and centrifuges.

The cooling load can be calculated according to the unit cooling load index 100W/M2.

As for brands, imports include Maxwell, Carrier, York and Daikin's Midea Gree. It depends on the builder's choice.

Of course, there are other options besides this system. For example, in the north, the Capital Library uses a lithium bromide direct-fired machine, which is also very energy-saving and can provide heat.

I hope my answer is helpful to you!