The Dairei Ltd.

Air-conditioning Equipment

Any trouble with air, water or heat?

The Dairei Ltd. works on design and installation in various fields concerning "air, water and heat", such as energy-saving air conditioner "Cool Jet System®", air-conditioning installations, water supply, draining and sanitary system, freezing/refrigeration facilities.

Air-conditioning Installation

It is an installation technology to adjust and control the heat and cold in a space.

Air-conditioner for Buildings: It is an air-conditioning equipment for office buildings. This equipment provides the workers with moderate warmth and maintains the temperature and humidity, airflow and cleanness within an appropriate range in the building.

Air-conditioner for Industrial Use: It corresponds to the temperature and humidity, and cleanness that differs depending on the products, and by maintaining them within the requested condition, it ensures the quality of the products.

Clean Room Installations: These installations control the temperature and humidity, pressure and airflow and provide a clean, sterilized and dustless space within the refined, microminiaturized and quality-enhanced room in the field of electronics.

Bio-clean Room Installations: These installations control the temperature and humidity, pressure and airflow and provide a clean, sterilized and dustless space within the room for the prevention of infection, pollution and substantial change in the field of medical treatment, medicine and food.

Constant Temperature and Humidity Installations: These installations maintain the temperature and humidity, and cleanness within a constant accuracy to control the quality of the products in the plant and laboratory of electronic equipment and precision equipment.

Air Cleaning Installations: By the use of dust removing devices and air cleaning devices, these installations eliminate dust particles, harmful gas and offensive smell produced within the room and also remove dust in external air coming in by the ventilation, and thus clean the interior air.

Local Exhaust Ventilation System: This system partially emits the polluted air by installing a hood in the spot where the heat, steamed water and harmful gas are generated.

Smoke-preventing and Smoke-extracting installations: These installations prevent the smoke generation in the case of fire from invading the corridor, lobby and stairs that will be the evacuation route, in order to secure the time and safety in the passage for the evacuation.

Heat Storage Air-conditioning System: This air-conditioning system stores the heat media (water and ice) in the heat source system and releases the stored heat mainly in the peak load time in order to reduce the peak of the demand for electricity.

Gas Air-conditioning System: By utilizing a gas as an energy source, this air-conditioning system equalizes annual electricity demand and reduces contract electricity demand.

Cogeneration System: This is a system that uses an engine, turbine-driven generator to generate electricity and by utilizing the waste heat generated for the heat use in the plant, air conditioning or hot-water supply system in the building. With regard to a decline of available resources, this system will contribute to the effective use of energy.

Water Supply, Draining and Sanitary Systems

These are the installations concerning water section such as water supply, draining system and sanitation control of water.

Water Supply and Draining Systems: Within the building or the ground, these systems supply drinking water etc. to hydrant and sanitary appliances such as toilet and drain the water discharged from those appliances.

Hot Water Supply Facility: This facility provides hot water produced by the heater with the appliances that need hot water within the building.

Gas Facility: This facility provides city gas and propane gas etc. with the gas appliances such as gas stove and water heater.

Fire Extinguishing Equipment: This equipment reduces the damage by fire as well as protects the lives and puts out the fire by using fire defense equipment etc. when a fire occurs within the building.

Kitchen Apparatus: This is the cooking apparatus for the storage of the food materials, pre-treatment, heating cooking and tableware washing.

Medical Piping System: This is the system of special medical piping for medical gases such as oxygen, laughing gas, nitrogen and air, and for vacuum piping for the medical consultation and treatment of the patient.

Large-scaled Water Treatment Installation such as Swimming pool and Hot Spring: This technology is used in the large-scaled water treatment installation such as swimming pool and hot spring bath in order to sterilize the water by chemicals or filtration apparatus, maintain the appropriate water quality of living and industrial water according to its purpose of use and thus meet the quality standard of water discharged into public sewerage and side-ditch.

Septic Tank System: This is the septic tank system for discharging the flushing water from toilet and wastewater from the kitchen or bath to the place other than public sewerage.

Hot Spring Gas Separator: This is the equipment for the law-compliance safety measure against hot spring gas that installs the gas separator and measures data based on the Hot Spring Law reformed in 2008.

Applied Cooling Installations

These are the installations for food cooling or freezing under the appropriate condition.

Freezing-Refrigeration Facilities: These facilities reduce the room temperature and protect the freshness with the appropriate storage temperature in order to preserve the freshness of the food for a long term.

Cooling Facilities: These facilities promptly cool down the food or goods (products) to the appropriate temperature in order to keep the quality of them.

Food Freezing Facilities: These facilities freeze the food to the most suitable temperature and time in order to preserve its original color, flavor and texture for a long term.

Spiral Style Freezing Technology: This is the continuous freezing technology that the food on the carrying conveyor is frozen at the exit. This carrying conveyor in the freezing refrigerator has a structure that the products go spirally from bottom to top or from top to bottom.

Cold-air Drying Equipment: Drying is influenced by the shape and ingredients of the food, temperature, humidity and wind velocity in the drying room. This equipment prevents the food deterioration and increases the drying velocity by maintaining the appropriate moisture content.

Heat Storage Style Cooling Equipment: This is the cooling system technology that reduces the utilized capacity of heat source machine by freezing the heat storage material in the heat storage tank by using the heat source at night and by melting it during the daytime to withdraw heat.

Circulation System for Fresh Fish in the Preserve: This system provides the condition similar to the habitat by adjusting the water temperature similar to the habitat temperature zone of the fish and shellfish through a freezing machine or heater.

Freezing-Refrigeration Showcase Equipment: This equipment is widely applied to the supermarket for the low-temperature storage that enables the customers both to see and to choose the food such as vegetables, fruits and meat.