Spot Cooling Technology

This technology focuses the air conditioning in a large factory space only around the workers. This helps boost the productivity levels through an improvement in working conditions, while enabling greater cost reductions than those achieved when air-conditioning the whole large space.

A factory equipped with spot outlets

Outlet for spot air conditioning

* What is SET?
Standard New Effective Temperature: This is an index for evaluating six elements in a thermal environment (workload, amount of clothing, temperature, radiation temperature, airflow, and humidity) with a single measure.

The following table shows an example of calculating SET for summer and winter when planning spot air-conditioning.
A SET value that is satisfactory to 90% of workers is 24.6°C in summer and 23.3°C in winter. The actual temperature blown is supposed to be 24.7°C in summer and 20.8°C in winter, as design values.

Blowing temperature: 24.7°C
Airflow velocity: 1.5m/s

SET=24.6°C
Satisfaction=90% (90% of workers are satisfied)

Blowing temperature: 20.8°C
Airflow velocity: 1.0m/s

SET=23.3°C
Satisfaction=90% (90% of workers are satisfied)

Example planning of blowing in summer and winter