Heat pumps

Mayekawa has been manufacturing heat pumps for large-size air conditioning since 1971, well in advance of our competitors. Our heat pumps are utilized in various places that require air conditioning, such as office buildings, factories, museums, public facilities, and aircraft. Effectively utilizing exhaust heat and renewable energy, such as heat in the air and water, our heat pump technology is well suited to a time that is emphasizing environmental consideration and energy saving, allowing us to propose optimal systems that meet client's needs.

Supplying 194℉ (90℃) water

unimo AW/WW/AWW - CO2 heat pumps

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unimo AWW

unimo can supply hot water in a highly efficient manner by proficiently using heat in the air and water. This heat pump uses a natural refrigerant, CO2, and the lineup consists of three models: AW, which utilizes an air heat source, WW, which utilizes a water heat source, and AWW, which utilizes both air and water heat sources. Each model can instantly deliver water at 194℉ (90℃), and supply plenty of hot water with overwhelming cost performance. The model using water as a heat source is a CO2 heat pump combining hot water boiler and chiller functions in one package. In addition to plenty of hot water supply capacity, it can be used as only heat pumps with water as the heat source can, providing double the merit.
Additionally, the lineup includes a CO2 heat pump that realizes a cold and hot water supply utilizing both air and water as the heat source, a world first. Using the thermal energy of water, this unit can supply cold and hot water simultaneously when air conditioning and process cooling are required during the daytime and summer months. At night and during the winter, when cold water is not normally used, it can produce hot water alone using the thermal energy of air.

unimo AWW

SPECIFICATIONS

  • unimo AW
    Heating capacity: 252.5kBTH/H (74.0kW)*
    *Capacity at 149℉ (65˚C) hot water outlet temp
    Hot water outlet temp: 149 or 194℉ (65 or 90℃)
  • unimo WW
    Heating capacity: 313.6kBTH/H (91.9kW)*
    Coolig capacity: 19.8TR (69.5kW)*
    *Chilled water in 149 out 194℉ (in15℃ out 10℃), Water temp. 62℉ (17℃)
    Hot water outlet temp: 149 or 194℉ (65 or 90℃)
    Chilled water inlet temp: 16 to 95℉ (-9 to 35℃)
  • unimo AWW
    Heating capacity: 315.0kBTH/H (92.3kW)*
    Coolig capacity: 19.6TR (69.1kW)
    *Capacity at 149℉ (65℃) hot water outlet temperature
    Hot water outlet temp: 149 or 194℉ (65 or 90℃)
    Chilled water inlet temp: 99 or 28℉ (37 to -2℃)

WHERE TO USE

  • Food processing plant
  • Meat processing plant
  • Beverage plant
  • Prepared food plant
  • Automobile plant
  • Automobile parts plant
  • Semiconductor plant
  • Chemical plant
  • Hotel
  • Golf course
  • Hospital
  • Hot spring facility

Supplying 248℉ (120℃) air

Ecosirocco -CO2 heat pump air heater

Ecosirocco

The first heat pump air heater in the world to provide high-temperature heating, up to a maximum of 248℉ (120℃) , using CO2 as a refrigerant. It utilizes renewable energy such as cold water, exhaust heat, and well water for process cooling. This is a revolutionary heat pump that can supply hot air needed for drying and heating with overwhelming energy and cost savings, while also contributing to the reduction of CO2 emissions.
Hot air is supplied without the use of combustion devices such as burners and boilers. Furthermore, the cold water generated simultaneously with the hot air can be used for air conditioning and process cooling, and units can be linked to meet capacity requirements. When hot air in excess of 248℉ (120℃) is needed, combining this unit with other heating sources (electric motors, steam, etc.) results in the desired effectiveness.

Ecosirocco

SPECIFICATIONS

  • Heating capacity: 419.8kBTH/H (123kW)
    *Capacity at 176℉ (80˚C) air supply temperature
    Hot air supply temp: 140, 176, 212, 248℉ (60, 80, 100, 120℃)

WHERE TO USE

  • Food processing plant
  • Meat processing plant
  • Beverage plant
  • Prepared food plant
  • Automobile plant
  • Automobile parts plant
  • Semiconductor plant
  • Chemical plant
  • Hotel
  • Golf course
  • Hospital
  • Hot spring facility

Supplying glycol in the 50 to 59℉ (10 to 15℃)

Snow melting heat pumps

air heat source model

water heat source model

Pipes are buried in roads and sidewalks. Glycol is then heated to about 59℉ (15℃) with a heat pump and is sent along the pipes to warm the road surface which prevents it from freezing and keeps it dry.
For the heat pump heat source, it is possible to use various renewable energy sources, such as readily available air, groundwater, geothermal energy, lake water, and seawater. Reduced fossil fuel use and CO2 emissions with this heat pump line-up.

SPECIFICATIONS

  • Water heat source model
     Heating capacity: 153.6 to 2320.7kBTH/H (45 to 680kW)
  • Air heat source model
     Heating capacity: 85.3 to 2320.7kBTH/H (25 to 680kW)

WHERE TO USE

  • Roads
  • Sidewalks
  • Parking lots
  • Open spaces
  • Parks

Supplying 185℉ (85℃) water

Plus+HEAT - ammonia heat pump

Plus+HEAT

Mayekawa offers a range of ammonia heat pumps offering high quality hot water up to 185℉ (85℃).
Available as reciprocating and screw compressor packages these units can act as standalone units using a waste water or geothermal heat source. They can also be integrated into an existing refrigeration system as a heat recovery application.

SPECIFICATIONS

  • Heating capacity: 1662kBTH/H (487kW)
    *Capacity at 185℉ (85˚C) hot water outlet temp.
    Hot air supply temp: 149, 158, 167, 176, 185℉ (65, 70, 75, 80, 85˚C)

WHERE TO USE

  • Food processing plant
  • Meat processing plant
  • Beverage plant
  • Prepared food plant
  • Automobile plant
  • Automobile parts plant
  • Semiconductor plant
  • Chemical plant

Supplying air in the 27 to 176℉ (-3 to 80℃) range

Ground cooler - mobile air conditioner for aircrafts

Ground cooler

Supply cold and warm air ranging from 32 to 122℉ (0 to 50℃) to parked aircraft with this cooler. For aircraft maintenance, the engines are turned off, and this cooler will supply cold and warm air as a piece of ground support equipment (GSE).
The cooler can also be used as a power generator and source of power for commercial purposes and is self-powered, meaning it can provide cold and hot air in a wide range of places. In addition to being used with aircraft, it can also serve as a mobile air conditioning unit during disasters, etc.

SPECIFICATIONS

  • 60USRT Model
    Cooling capacity: 56.9TR (200kW)
    Heating capacity: 341.3kBTH/H (100kW)
    Air flow: 309lb/min (140kg/min)
    Static airflow pressure: 1PSI (8.83kPa)
    Installed generator capacity: 220kVA
    Vehicle installed in: diesel truck

WHERE TO USE

  • Airport related facilities
  • Aircraft maintenance equipment
  • Spot cooler for event venues

For air conditioning

Separate heat pump for air conditioning

Separate heat pump for air conditioning

Separate heat pump for air conditioning

Take advantage of the features of a heat pump that uses a screw compressor capable of handling a wide range of compression ratios. This unit allows for smooth switching between three modes: cooling, heating, and heat recovery (simultaneous extraction of cold and heat energy). It also contributes to energy saving by using various heat sources such as waste heat and renewable energy such as air, water, and geothermal heat. As a demand measure, it also supports ice thermal storage and can be used for a wide range of air conditioning applications.
Additionally, as the separate heat pump model allows the air heat exchanger and the compressor to be placed in different locations, it can be installed in small spaces. Together with thermal energy storage units it is used for central air conditioning in office buildings and public facilities, and it will support your air conditioning system upgrades.

SPECIFICATIONS

  • Screw heat pump
    Cooling capacity: 28.4 to 852.9TR (100 to 3000kW)
    Refrigerants: R134a, ammonia (R717)

WHERE TO USE

  • Air conditioning for office buildings, art galleries, museums
  • Air conditioning for high load facilities such as data centers
  • Water thermal (or heat) storage systems, central ice bank systems
  • River and seawater heat source air conditoning systems

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