52
the current trend with no additional countermeasures, the medium variant represents
the case where measures are taken such as subsidies for introducing the water heaters, and the high variant represents the case where stronger measures are implemented to accelerate their introduction. According to this estimate, there will be 3–4
times as much stock in 2040 compared to the current situation.
Heat pumps are used not only in EcoCute but also in various household appliances. Household air conditioners are a typical example. Due to technological progress over the last 20 years, the energy efficiency of air conditioners has doubled.
Most freezer-refrigerators have a built-in heat pump, and heat pump type models are
available for hot water floor heating, washing and drying machines, and hot water
snow melting systems.
There are many heat pump type models in industrial air conditioning, freezerrefrigerators, and hot water supply equipment. Recently, cases of introduction of
these equipments are increasing even at monozukuri sites. With the initial technology, it was possible to raise the temperatures of water to about 60 degrees (Celsius),
so the industrial use was limited, but recent technology has made it possible to raise
it to 90 degrees. If heating temperatures to this extent can be secured, these equipments can be used for heating and drying foods, as well as at chemical plants, electronic parts factories, and pharmaceutical factories (Fig. 3.14).
2,400
2,200
2,000
1,800
1,600
1,400
1,200
1,000
800
600
400
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
1,008
1,818
1,827
1,641
1,432
2,271
1,987
1,847
1,695
932
852
Low
Medium
High
Reference
Number
of
household
heat
pump
water
heater
in
stock,
10,000
units
Fig. 3.13 Estimated number of household heat pump water heater introduced. (Source: “Survey
on Prospects of HP Diffusion,” Heat Pump & Thermal Storage Technology Center of Japan)
3 Technology to Support Low-Carbon Society (Using Energy)
the current trend with no additional countermeasures, the medium variant represents
the case where measures are taken such as subsidies for introducing the water heaters, and the high variant represents the case where stronger measures are implemented to accelerate their introduction. According to this estimate, there will be 3–4
times as much stock in 2040 compared to the current situation.
Heat pumps are used not only in EcoCute but also in various household appliances. Household air conditioners are a typical example. Due to technological progress over the last 20 years, the energy efficiency of air conditioners has doubled.
Most freezer-refrigerators have a built-in heat pump, and heat pump type models are
available for hot water floor heating, washing and drying machines, and hot water
snow melting systems.
There are many heat pump type models in industrial air conditioning, freezerrefrigerators, and hot water supply equipment. Recently, cases of introduction of
these equipments are increasing even at monozukuri sites. With the initial technology, it was possible to raise the temperatures of water to about 60 degrees (Celsius),
so the industrial use was limited, but recent technology has made it possible to raise
it to 90 degrees. If heating temperatures to this extent can be secured, these equipments can be used for heating and drying foods, as well as at chemical plants, electronic parts factories, and pharmaceutical factories (Fig. 3.14).
2,400
2,200
2,000
1,800
1,600
1,400
1,200
1,000
800
600
400
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
1,008
1,818
1,827
1,641
1,432
2,271
1,987
1,847
1,695
932
852
Low
Medium
High
Reference
Number
of
household
heat
pump
water
heater
in
stock,
10,000
units
Fig. 3.13 Estimated number of household heat pump water heater introduced. (Source: “Survey
on Prospects of HP Diffusion,” Heat Pump & Thermal Storage Technology Center of Japan)
3 Technology to Support Low-Carbon Society (Using Energy)