JFD's hyperbaric conditioning unit - external regeneration (HCU-ER) conditions the internal atmosphere of a saturation diving complex to maintain a habitable environment.
The external regeneration system provides increased diver comfort by having the system placed outside of the living chambers.
The HCU-ER HCU100 series offers uninterrupted operation through its twin scrubber design, enabling the change out of chemical absorbent whilst maintaining habitat conditioning capability.
Further Information
The HCU-ER HCU100 series extracts gas from the chamber into the active scrubber, injecting additional moisture to improve scrubbing capacity. The gas passes through the chemical absorbent which retains any CO2 present in the gas.
Gas is then transferred to the dehumidifier where it passes over a cold water coil. This coil has the effect of lowering the gas to a temperature below its dew point; reducing relative humidity and enabling the collection of condensation in the dehumidifier sump.
The 3-stage blower then accelerates the gas into the heater where a hot water coil increases the gas temperature. The fully reconditioned gas is then circulated back into the chamber.
Local control via HMI allows the operator to view at a glance chamber temperature, humidity, blower speed and alarms; as well as establish set points for these criteria and run system tests. Essential to the operation of the HCU-ER is the supply of 440VAC, 3~, 60Hz, which is transformed and rectified to 24VDC by the integral HCU transformer.
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Design depth |
350 msw |
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PV design code |
PD5500:2006 |
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Construction |
316L stainless steel |
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Max no of occupants supported |
6 compressed divers |
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Min operating depth |
0 msw |
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Max operating depth |
350 msw |
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Working pressure |
35 bar |
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Test pressure |
46 bar |
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Design temperature |
-20ºC to 80ºC 3” ANSI B16.5 class 300 RF flange |
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| Gas outlet | 3” ANSI B16.5 class 300 RF flange |
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| Gas reclaim | 1/2” FNPT | |
| Hot water inlet | 3/4” FNPT | |
| Hot water outlet | 3/4” FNPT | |
| Cold water inlet | 3/4” FNPT | |
| Cold water outlet | 3/4” FNPT | |
| Water injection | 1/2” FNPT | |
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Drain line |
1/2” FNPT |
CO2 scrubber
| Capacity |
17.6 kg (8.8 kg per basket) |
3-stage variable speed blower
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Max Rpm |
7000 Rpm |
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Gas flow |
2.8 m3/min-1 |
Dehumidifier
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Cooling capacity |
Max 10 kW |
| Water removal | 780 ml/hr at 50% RH |
Heater
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Heating capacity |
Max 10 kW |
Controls
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Temperature control |
22ºC to 32ºC +/- 1ºC (+/- 0.5ºC tgt max var) |
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Humidity control |
40% to 65% RH +/- 5% |
Dimensions HCU100BA
| Length |
2000 mm |
| Width |
1200 mm |
| Height |
1850 mm |
| Weight | 1400 kg |
Hot water requirement |
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Min flow |
20 Lpm |
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Min temp |
60ºC |
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Min pressure |
4 bar |
Cold water requirement |
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| Min flow |
20 Lpm |
| Min temp | 2ºC |
| Min pressure |
4 bar |
Fresh/potable water requirement |
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| Min flow |
5Lpm with 10μm filtration |
| Min temp |
Ambient |
| Min pressure |
45 bar |
Power requirement |
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| Power requirement |
440VAC, 3~ , 60Hz |
| Document | Document type | Download |
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Hyperbaric conditioning unit - external regeneration HCU-ER |
Datasheet | KI-MDS-567 R1 |
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Hyperbaric conditioning unit - external regeneration HCU-ER - single scrubber pot, 350 msw (HCU100BA series) |
Operation and maintenance | HCU100-OM-6739 R0 |
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