Source:JASE-W Japanese Smart Energy Products & Technologies

https://www.jase-w.eccj.or.jp/technologies/index.html

Keywords

Z4electricity

renewable energy

LTechnical Services

Heat Pump and Thermal Storage Technology Center of Japan

Industrial Heat PumpFeatures◆ The heat energy originated from the sun is stored in the natural environment, i.e. in the air, in waterand underground. “Heat pumps” convert such heat energy into usable energy which can be used for
air-conditioning, hot-water supply/water supply and heating and drying.
◆ Heat pumps are highly energy-efficient because they use the heat energy in the air and in water,
instead of fossil fuel, as an energy source. Therefore, reduction in the CO2 emission is expected fromthe use of them.
◆ High temperature heat pumps have been developed. They can meet the entire demand for the supplyof hot water below 100ºC. Therefore, it is possible to replace large centralized facilities such asboilers by distributed facilities including industrial heat pumps. This replacement will lead to significant
energy saving with the reduction of heat loss including that from piping and to drains.
Basic Concept or Summary◆ Waste heat recovery heat pumps [Use of wasted heat]• Unusable waste heat in tens of degrees can be used as an effective heat source.
• Even if there is time lag between waste heat generation and demand for heat, it is possible to use
waste heat without loss by installing heat storage tanks to store the heat transferred by
the heat pumps.
◆ Heat pumps for simultaneous supply of hot and cold water [streamlining of cooling and heating]• This heat pump technology has made it possible to use cold and high-temperature thermal energy
simultaneously.
• Highly efficient operation can be achieved in plants where both cooling and heating are required,such as food processing plants, with the use of these heat pumps.
• The simultaneous generation of the two types of thermal energy has improved the energy efficiencyof the cooling and heating processes by nearly two-folds compared with the previous models and,thus, contributed to the improvement in energy efficiency of entire plants.
Use of pumped
thermal energy

Location wherehigh-temperaturethermal energy
is required

Cooling process
Cooling of food items
Cooling of fermentationtanks, etc.

Newly-installed
heat pump

Low-temperaturethermal energy

Heat Pump for
simultaneous supplyof hot and cold water
Water supply

Inflow of wastewaterfrom various locations

High-temperaturethermal energy

New facility

Heating process

Reduction infuel consumption
Steam boiler
Heat recovery coil

Discharge intoa sewer

Heating of food items
Washing, sterilization,etc.

Hot water supply

Hot water
storagetank

Temperature
Toward the generation of hotter water by heat pumps

Pre-treatment
for coating(Degreasing)

Pre-treatment
for coating(Degreasing)Washing of substrateof optical disksTemperature andhumidity-controlledclean room

Cooling of
plating tanks

Refinementof cacao oil
Drying ofpharmaceuticalproducts
Concentration ofpharmaceuticalproducts

Cooling ofreaction tanks
Control ofreactions

Boiling

Purificationof ethanol
Drying oflaminated
paper
Cooling ofreaction tanks
Control ofreactions

Synchronizedtemperature control
Cooling of rolls ofoffset rotary presses
Gloss finishingand cooling

Washing Washing Washing
Sterilization Kneading

Thawing
Shaping andtemperatureadjustment

Demand for high-temperaturethermal energy below 100ºC

Cooling of
fermentation
tanks

F-08

S5Temperaturecontrolled storage

Demand for low-temperature thermal energy

Machinery

Automobile

Pharmaceutical

ChemicalPrinting

Beverage Ham Confectionery

Food processing

Examples of the use of heat pumps in major industriesEffects or Remarks

F-08

u Noodle plant [The use of heat recovery heat pumps has made it possible to supply hot andlow-temperature thermal energy simultaneously.]
Conventional system
Supply of17ºC water

Fuel
Chiller

Supply of 17ºC water

31 % reduction in CO2 emissions
35 % reduction in energy consumption

FuelReduction in fuelconsumption ofthe boiler

BoilerContact:

Noodle boiling tank

Cooling tank

Boiler

Hot water
storagetank
Supply of
90ºC water

Heatrecovery
heat pump

Supply of
17ºC water

New system

Noodle boiling tank

Ice thermal
storagetank

Cooling tank

The Heat Pump and Thermal Storage Technology Center of Japan
International & Technical Research Department
1-28-5 Hulic Kakigaracho Bldg., 6F, Kakigaracho Nihonbashi, Chuo-ku, Tokyo, Japan
Tel: +81-3-5643-2404 Fax: +81-3-5641-450
URL: http://www.hptcj.or.jp