Development and Marketing of Highly-efficient Heat Pump Hot Air Generator "Neppu-ton "Japan's First Commercialized Heat Pump System nabling to Supply 90-degree Hot Air from Air Sources
February 13, 2017
Chubu Electric Power Co.,Inc.
Mitsubishi Heavy Industries Thermal Systems, Ltd., Kansai Electric Power Co., Inc., Tokyo Electric Power Company Holdings, Inc., and Chubu Electric Power Co., Inc. jointly developed Neppu-ton, a hot air generator that employs a highly efficient air-source heat pump (ASHP) system. This is Japan's first-ever air-source-based product capable of supplying hot air up to 90°C. The product will be released from Mitsubishi Heavy Industries Thermal Systems, Ltd. in June 2017.
Fossil fuel-based steam boilers and hot air generators are commonly used in the drying processes of factories, at which hot air is employed. This is leading to demands for saving energy by adopting heat pump systems. Most conventional high-temperature heat pumps use hot-water generating or water-source systems that recover heat from factories' hot wastewater. There thus was a need for installing air heat exchangers and pipes to circulate hot and chilled water, thereby posing challenges in costs and in ensuring space.
As with room air conditioners for households, the newly developed Neppu-ton comprises an outdoor unit, which takes in atmospheric heat, and an indoor unit capable of directly generating hot air. The device achieved high efficiency boasting a COP of 3.5 and can generate hot air up to 90°C ; the highest ever temperature in Japan offered by an ASHP. This has made it easier for adopting heat pump systems into processes where factories employ hot air.
In a verification test, Neppu-ton was applied to dry laminating machines; units employed to place together films. Results revealed a roughly 50% cutback in consumed energy compared with conventional systems. The new device also had been used in spray driers, which are equipment that continuously manufactures granular products from fluid material, and had been confirmed to have no issue in drying qualities.
[Key features of Neppu-ton]
1.Capable of supplying hot air ranging from 60 to 90°C