HDS

Hybrid Drying System

HDS = Hybrid Drying System

HDS Series: Future-Aire

The Pioneer HDS Series (Future-Aire) combines the advantages of a refrigerant dryer and a heatless regenerative dryer. A PIONEER Refrigerant dryer is used to lower the pressure dewpoint of compressed air down to 40°F/4.4°C, and a PIONEER Heatless Regenerative Dryer is used to lower the PDP to -40°F/-40°C to -100°F/-73.3°C. The moisture content of saturated air at 100 PSIG is:

0.603 oz/100 SCFM at 100°F/37.8°C PDP

0.077 oz/100 SCFM at 40°F/4.4°C PDP

The moisture content of the air at 40°F/ 4.4°C PDP is less than 13% of the moisture content of air at 100°F/37.8°C PDP. Future-Aire takes advantage of this. Because the refrigerated dryer removes 87% of the moisture, the purge air requirement of the regenerative dryer is only a fraction. The hybrid system reduces the purge air requirement even lower by heating the purge air to about 150°F/65.6°C using the normally wasted condenser heat.

The net purge air requirement is:

For -40°F/-40°C – 2-3%

For -100°F/-73.3°C – 3-4%

Lowest Overall Cost

To operate a 1000 SCFM heatless dryer, 4000 hours/year, based on $0.30/1000 SCF the purge cost is $10,080/year. To operate a 1000 SCFM Future-Aire system under similar conditions, the purge cost is $2,016/year. Based on $0.70/KWH and 5.0 KW power usage, the power cost for its refrigeration system is $1,400/year. Total operating cost for the Future-Aire system is $3,416/year.

Cost savings are $10,808 – $3,416 = $6,664 per year. Cost savings generally make Future- Aire the lowest overall cost dryer.

· Quality Features
· Specifications
· Lowest overall cost
· Cold coalescer with automatic drain and particulate afterfilter with manual drain are standard
· Accepts inlet temperature to 190°F/87.8°C with minimum increase in purge loss
· Reduces required compressor capacity
· Minimum purge loss
· Diagnostic control panel
· NEMA 4 electrical
· Reliability of two full-size dryers
· No dewpoint spikes of a heat-type
· More consistent dewpoint
· Longer desiccant life due to minimum moisture loading
· Longer valve life due to moderate temperatures
· The purge air heat exchanger acts as a secondary condenser to lower the refrigerant head pressure, lowering energy usage and increasing compressor life by helping it run cooler.

Future-Aire Specifications
	Inlet Capacity* in SCFM/NMHR @ -40F/-40C PDP	Standard Voltage	Comp HP	Air In/Out	Dimensions (in./mm)			Approx. Shipping Weight (lbs/kgs)
Model	Inlet Capacity* in SCFM/NMHR @ -40F/-40C PDP	Standard Voltage	Comp HP	Air In/Out	L	W	H	Approx. Shipping Weight (lbs/kgs)
HDS25	25/43	115/1/60	1/4	1/2" NPT	40/1016	40/1016	48/1219	395/180
HDS35	35/60	115/1/60	1/4	1/2" NPT	40/1016	40/1016	58/1473	490/223
HDS50	50/85	115/1/60 or 230/1/60	1/3	3/4" NPT	40/1016	40/1016	68/1727	575/261
HDS75	75/128		1/2	3/4" NPT	48/1219	48/1219	88/2235	650/295
HDS100	100/170		1/2	1 1/2" NPT	48/1219	48/1219	79/2007	900/409
HDS125	125/213		3/4	1 1/2" NPT	48/1219	48/1219	79/2007	980/445
HDS200	200/340		1	1 1/2" NPT	55/1397	60/1524	78/1981	1370/623
HDS250	250/425	230/1/60	1 1/2	1 1/2" NPT	61/1549	64/1626	78/1981	1620/736
HDS300	300/510	230/3/60 or 460/3/60	1 1/2	2 1/2" NPT	70/1778	64/1626	81/2058	1790/814
HDS400	400/680		2	2 1/2" NPT	70/1778	70/1778	84/2134	2240/1018
HDS500	500/850		3	2 1/2" NPT	70/1778	70/1778	84/2134	2880/1309
HDS600	600/1020		3	3" NPT	70/1778	70/1778	91/2311	3240/1473
HDS800	800/1360		4	3" NPT	82/2083	82/2083	96/2438	4200/1909
HDS1000	1000/1700		5	3" NPT	82/2083	82/2083	96/2438	5040/2291
HDS1200	1200/2040		6	8" NPT	82/2083	82/2083	96/2438	5880/2673
HDS1400	1400/2380		7 1/2	3" NPT	122/3099	87/2210	96/2438	6900/3136
HDS1600	1600/2720		7 1/2	4" FLG	122/3099	87/2210	96/2438	7800/3545
HDS1800	1800/3060		10	4" FLG	161/4089	66/1676	102/2591	8900/4045
HDS2000	2000/3400		10	4" FLG	161/4089	66/1676	102/2591	9480/4309
HDS2250	2250/3825		10	4" FLG	161/4089	66/1676	012/2591	10200/4636
HDS2500	2500/4250		7 1/2 + 7 1/2	6" FLG	228/5791	80/2032	102/2591	11000/5000
HDS2750	2750/4675		7 1/2 + 7 1/2	6" FLG	228/5791	80/2032	102/2591	12100/5500
HDS3000	3000/5100		7 1/2 + 7 1/2	6" FLG	228/5791	80/2032	102/2591	13440/6109
HDS3500	3500/5950		10+10	6" FLG	228/5791	80/2032	102/2591	15600/7091
HDS4000	4000/6800		10+10	6" FLG	228/5791	80/2032	102/2591	17760/8073

Specifications subject to change without notice

Notes:

* At 100F/37.8C, 100 PSIG/6.9 BAR G
Larger sizes built to specifications.
Maximum operating pressure 150 PSIG/10.35 BAR G. Higher pressures available

The dryer shall be capable of drying ______SCFM/NM of air at 100 PSIG/6.9 BAR G and 100F/37.8C inlet conditions down to -40F/-40 C PDP on a continuous basis with 2-4% purge loss. The system shall include an integrated refrigerant dryer and a heatless regenerative dryer. Each dryer shall be capable of drying the full flow of air independent of the other. For maximum efficiency and performance, the heatless dryer shall dry the air at its coldest point. The air flow shall be through the regenerative dryer then the air-air heat exchanger. To minimize purge loss, the purge air shall be reheated by the normally wasted condensor heat and air-air heat exchanger. For maximum filtration and coalescing, the coalescer shall be installed at the coldest point. The coalescer shall be insulated and equipped with a 'y' strainer and dual timer drain for maximum efficiency. The dryer shall have a 10-year limited warranty.

Options:

8 valve triple bypass: The bypass system shall be able to bypass either dryer or the complete system.
Future-Aire Plus for oil-free air includes particulate, carbon adsorber, and Oil-Alert filter combination.
3. Duplex Filtration.

SPECIALIZING IN AIR AND GAS PROCESSES SINCE 1980 210 FLATFORK ROAD, WARTBURG TN 37887 PHONE 423-346-6693 FAX 423-346-6835

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