Constant Temperature and Humidity Unit
The constant temperature and humidity unit is designed to maintain the sensible heat and the latent heat at constant levels always to prevent the paralysis of operation that could occur otherwise due to the thermal expansion, inner condensation and occurrence of static electricity with parts of IT rooms.
It is not just for freezing, but also for functioning as a high-tech system to control the temperature, humidity, air cleaning and air diffusion simultaneously according to the operational conditions preset by the manufacturers of computer devices.
Relation Images
| Method/Items | Air-cooling type | Glycol type | Water-cooling type |
|---|---|---|---|
| Medium | Air | Glycol solution | Coolant |
| Initial investment | About 110% | About 125% | 100% as the reference |
| Freezing efficiency (22C,50%) | About 85% | About 75% | 100% as the reference |
| Operation cost | About 110% | About 120% | 100% as the reference |
| Subsidiary facilities | Indoor condensers and subsidiary pipes | Cooling towers, circulation pumps and subsidiary pipes | Dry coolers, circulation pumps and subsidiary pipes |
| Advantages | ▷As condensation takes place using the outside air, subsidiary facilities are simple and it is convenient to manage operation. | ▷ Can be used for all seasons as the chilling is based on the glycol cooling method that uses sealed-type condensers. | ▷Chilling efficiency is high because the condensation takes place using coolant |
| ▷Initial investment cost is low | ▷Easy to control and simple to maintain regardless of seasons | ▷Almost not to be influenced by the change in the outside conditions | |
| ▷Easy to repair and costs less to maintain | ▷Less contamination of subsidiary facilities as the system is a sealed-type model ▷ A comprehensive system that is suitable for high-rise buildings as it is not limited in the length of piping ▷ Glycol is resistant to corrosion, which will help prevent scale inside pipes and enhance thermal conductivity and provide semi-permanent durability | ▷Less restriction in terms of the distance between the indoor unit and the outdoor unit | |
| Disadvantages | ▷As condensation takes place using air, any change in the outside air would cause somewhat burden onto the compressor. ▷Restriction in terms of the distance between the indoor unit and the outdoor unit | ▷The initial investment cost is slightly higher when compared with other systems ▷Freezing efficiency is low as the glycol solution is used | ▷As there is a risk of the coolant unit breaking due to severe cold weather in winter and the system is an open-type model, the system could fail when there are pollutants with the subsidiary facilities |
| Model | DY-30A | DY-50A | DY-60A | DY-75A | DY-100A | DY-150A | DY-200A | |
|---|---|---|---|---|---|---|---|---|
| Cooling capacity (KCal/H) |
8,400 | 14,000 | 16,800 | 21,000 | 28,000 | 42,000 | 56,000 | |
| Sensible heat (KCal/H) |
7,200 | 12,000 | 14,400 | 18,000 | 24,000 | 36,000 | 48,000 | |
| Reheating capacity (KCal/H) |
6,880 | 8,600 | 10,320 | 11,696 | 13,760 | 17,200 | 20,640 | |
| Humidifying capacity (l/H) |
2.4 | 3.6 | 4.8 | 6 | 7.2 | 9.6 | 12 | |
| Compressor | Type | HERMETIC(Sealed type) | ||||||
| Output(KW) | 2.2 | 3.75 | 2.2X2 | 5.5X1 | 3.75X2 | 5.5X2 | 7.5X2 | |
| Evaporator | Type | CROSS FIN COIL I-FRAME | ||||||
| Hot Water(ROW) | 3 | 4 | 4 | 4 | 4 | 4 | 4 | |
| Heating surface area(m²) | 0.34 | 0.43 | 0.57 | 0.72 | 0.95 | 1.43 | 1.91 | |
| Reheater | Type | AERO FIN | ||||||
| Volume(KW) | 2X4S | 2.5X4S | 3X4S | 3.4X4S | 4X4S | 5X4S | 6X4S | |
| Humidifier | Type | EVAPORATING PAN TYPE | ||||||
| Volume(KW) | 2 | 3 | 2X2 | 2.5X2 | 3X2 | 4X2 | 5X2 | |
| Air-blower | Type | SIROCCO FAN | ||||||
| Standards | D/S#1 3/4 | D/S#1 3/4 | D/S#2 | D/S#2 | D/S#2 1/2 | D/S#2X2 | D/S#2 1/2X2 | |
| Air volume(CMM) |
33 | 55 | 66 | 82 | 110 | 165 | 220 | |
| MOTOR(KW) | 0.4 | 0.4 | 0.4 | 1 | 1 | 1.5 | 2.2 | |
| Refrigerant control system | THERMOSTATIC EXPANSION VALVE | |||||||
| Maximum power consumption(KW) | 12.6 | 17.5 | 19.2 | 23 | 31 | 41.2 | 52.7 | |
| Appearance | Width(mm) | 730 | 880 | 1180 | 1180 | 1480 | 1800 | 1800 |
| Depth(mm) | 650 | 650 | 650 | 650 | 650 | 830 | 830 | |
| Height(mm) | 1750 | 1750 | 1750 | 1750 | 1750 | 1900 | 1900 | |