Industrial Chillers and Cooling Units

The inverter series is a family of air-cooled modular chillers with inverter (variable-frequency) scroll compressors. A fixed-speed compressor either runs at full load or stops; an inverter compressor adjusts its speed to demand. As a result, the leaving water temperature stays more stable and energy consumption drops markedly at part load.

Part-load efficiency: IPLV

Chillers spend most of the year below full load. That is why their efficiency is better shown by the IPLV (integrated part load value) than by the full-load coefficient. In this series the IPLV is 4.30 for the PSV models and 4.50 for the PLV models.

Model selection within the series

As heat pumps, the PLV models can also heat in very cold outdoor conditions (down to −26 °C). If only process cooling is needed, the main difference between PSV and PLV is efficiency and capacity.

Design

• Inverter scroll compressor, R410A refrigerant, electronic expansion valve
• Vacuum-brazed plate heat exchanger on the water side
• Low-noise axial fans; optional quiet mode
• Wired controller (PJAC-T-A301)

Operating range

Outdoor temperature 5–48 °C in cooling; chilled water 5–20 °C, hot water 30–55 °C.

Nominal cooling test conditions (manufacturer's catalog): water flow 0.172 m³/(h·kW), leaving water 7 °C, ambient 35 °C.

For a comparison of the series, see the industrial chillers category.