SPACECOOL INC. (SPACECOOL)

Resources

Current thermal issues and solutions with SPACECOOL

Internal electric/electronic devices deteriorate/fail

Device life
Maintenance cost

Measurement errors occur Trust in measurements lost

Less measurement error
Increased trust

Cooling requires energy consumption and CO2 emissions

Cooling cost
CO2 emissions

Challenges of Conventional Heat Countermeasures

Failure rates and service life of outdoor equipment such as distribution boards and telecommunications devices are greatly affected by the heat in their surrounding environment

Shading Panel

Warm air builds up between the distribution board and the shading panel
Once heat builds up, the internal temperature is slow to decrease

Cooling fan

Draws in dust and moisture
Regular maintenance is required

Panel Air Conditioner

Requires a large amount of power
Additional installation costs are high

Demonstration Results: Distribution Boards

Reduces the temperature inside the electronic control panel by approximately 10°C

Test conditions

Date: September 21, 2021
Heat Source: Inverter-simulated device (200 W)
Size: H1000 × W600 × D300
Material: SPACECOOL Film
Coverage: Entire surface (top and all sides)

Test results

Without Heat Source: Approximately 10°C lower than conventional paint and 5°C lower than a shading panel.
With Heat Source: Approximately 10°C lower than conventional paint and 8°C lower than a shading panel.

This demonstration project was carried out as part of the Yumeshima Demonstration Experiment, jointly conducted with Takenaka Corporation and Seiritsu Industry Co., Ltd., and co-hosted by the Osaka Chamber of Commerce and Industry and the Japan Association for the 2025 World Exposition.

Case Studies and Results: Commercial Air Conditioning Outdoor Units

An 8% reduction in electricity consumption was achieved simply by attaching magnetic sheets to the enclosure.
Simple installation enables easy and effective energy savings.

Client: Automotive parts manufacturer in Kanagawa
Equipment: Mitsubishi Electric air conditioning outdoor unit
Objective: To prevent summer high-temperature and high-pressure shutdowns and improve energy efficiency by reducing energy loss.

Test conditions

Thermostat setting: 28°C during business hours
Measurement period: July–September 2024
Measurement method: Surface temperature and electricity consumption
Material: SPACECOOL Magnet Sheet
Coverage: Entire surface (top and all sides)

Test results

Surface temperature: 5.5°C lower
Electricity consumption: 8% reduction

Customer reviews

Because the magnetic sheets can be easily installed during short downtime, they led to a reduction in electricity consumption.
Lowering the temperature around internal components such as the inverter and compressor improved overall energy efficiency.
In addition, the use of magnetic sheets keeps installation costs low, enabling a fast return on investment.

Case Studies and Results: Deployment at a Telecommunications Base Station

Indoor temperature was reduced by an average of 3.6°C, eliminating temperature alerts.
The air-conditioning setpoint was raised by 3°C, contributing to stable operations and lower energy consumption.

Client: QTnet Corporation
Location: Kurume, Fukuoka
Application: Telecommunications facility
Objective: To suppress summer temperature rise alerts and improve air-conditioning setpoints for energy savings

Test conditions

Measurement Period: September 2023 – September 2024
Measurement Method: Temperature loggers and power loggers
Material: SPACECOOL Film
Coverage: Entire surface (top and all sides)

Test results

Indoor temperature reduction: Up to 5.3°C (avg. 3.7°C)
Air-conditioning setpoint: Increased by 3–4°C (with no temperature issues observed)

Customer reviews

In addition to the strong temperature-reduction performance achieved through zero-energy thermal shielding and radiative cooling, we decided to conduct a trial adoption due to the simple installation—just applying the material—and the absence of ongoing operating costs.

Case Studies and Results: High-Voltage Power Receiving and Distribution Panels

Air-conditioning power consumption was reduced by approximately 21% on sunny days and by approximately 20% over the entire period, including rainy and cloudy days.

Objective: This initiative was conducted jointly with ENEOS Holdings, Inc. to improve the energy efficiency of high-voltage power receiving and distribution panels equipped with air-conditioning functions.

Test conditions

Date: Power consumption reduction was evaluated over the entire period, with July 22–August 31 defined as the pre-installation phase and September 1 onward as the post-installation phase.
Coverage: Roof, east, west, south, and north walls (five surfaces)
Installed Internal Equipment: Vacuum circuit breakers　3.6 kV, 600 A × 6 units

Molded transformer　3-phase 3.3 kV / 210 V, 100 kVA × 1 unit
Molded transformer　Single-phase 3.3 kV / 210–105 V, 100 kVA × 1 unit
DC power supply unit　2.6 kVA × 1 unit
Storage battery　MSE, 50 Ah (10-hour rate), 54 cells(MSE-50-12 × 9, DC 108 V per set)
Air conditioners　Single-phase 100 V, 615 W × 3 units

Test results

Monitoring air-conditioning power consumption with and without the material showed reductions of approximately 21% on sunny days and approximately 20% over the entire period, including rainy and cloudy days.