[Case Study] Constructing a Constant Temperature and Humidity Space Using Precision Air Conditioning in a Short Construction Period

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last updated：Sep 10, 2025

蒲田工業

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Using precision air conditioning units, we construct a constant temperature and humidity space in a short construction period.

To conduct a certain research, we needed an experimental space that could simulate a climate environment with a temperature range of 20 to 30°C and humidity of 40 to 60%. After requesting specifications and estimates from several companies, it seems that the costs significantly exceeded our expected budget. In general, the method commonly used to create a constant temperature and humidity environment requires the installation of an outdoor unit. In this case, there is a distance of over 50 meters between the laboratory and the location where the outdoor unit can be installed, which will result in enormous construction costs and time. Issues: 1. We want to establish a testing environment, but the equipment installation is very expensive. 2. We want to lower the budget but do not want to compromise on the constant temperature and humidity conditions. 3. There is limited installation space. 4. The outdoor unit installation location is more than 50 meters away, which inevitably increases construction costs.

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In the building where the installation is planned, office-level air conditioning management was implemented; however, due to the large fluctuations in the external environment for creating a constant temperature and humidity environment, it is recommended to construct the test room using insulation panels. By creating an insulated space, the desired temperature and humidity conditions can be achieved in a short time, reducing the load on the precision air conditioning unit. For air conditioning control, a method is proposed that combines the Orion all-in-one precision air conditioning unit, which does not require an outdoor unit, for specified temperature and humidity control. Using package air conditioners, humidifiers, and chillers, the common method of PID control often incurs high costs due to the need for piping work to the outdoor unit and the fabrication of control panels. In this case, the distance to the location where the outdoor unit could be installed became the biggest cost factor. If water supply, power supply, and drainage can be secured, by installing the all-in-one precision air conditioning unit on the panel wall and adopting a method that takes in return air while supplying fresh air, it can be installed very compactly, resulting in a shorter construction period and cost reduction compared to conventional methods.