One manufacturer offers a chiller with two smaller compressors to improve part-load performance. One of the compressors running at or near full load can handle part-load conditions. Factors to consider There is no single factor that can be used to decide which centrifugal chiller to buy. In fact, many facility executives evaluate companies along with products. They're looking for companies that constantly improve products.
Technological leadership is particularly important to larger customers.
Facilities like hospitals tend to be technology-driven themselves. When looking at chiller options, facility executives need to take a hard look at actual operating conditions. Customers need to understand the real-world performance of the machines. The ratings apply to single chillers, not to chiller plants. To get down to 10 percent load some machines require a hot gas bypass, a device that reduces load but not energy consumption.