HIGH-TEMPERATURE REFRIGERATED DRYERS NRD-HT SERIES | 25–127 SCFM
Invest in Productivity and Peace of Mind The Next Air NRD-HT (25-127 SCFM) Series dryers are engineered and designed for non-after-cooled, reciprocating compressors. The technology incorporates a larger refrigerated circuit, an after-cooler, and a patented high-efficiency heat exchanger, which allows the NRD-HT to withstand temperatures up to 210° F.
Standard Features • Compact economical footprint • Durable and engineered design for superior performance under extreme operating conditions
• Ambient temperature up to 120° F and inlet air temperature up to 210° F • Energy savings enhanced by high-efficiency heat exchanger
NRD-HT refrigerated dryers by Next Air & Gas incorporate next generation technologies equipped with industrial grade materials and components, making them the perfect dryers for body and service shops, as well as anyone utilizing 5 to 30 HP compressors. With excellent heat transfer coefficients and low pressure drops, the NRD-HT series out-performs competitors in the safeguarding of compressed air systems, machinery, and pneumatic tools.
Technical Overview
232 psig
Maximum Air Pressure:
210° F 120° F
Maximum Air Inlet Temperature: Maximum Ambient Temperature:
Class 5 (ISO 8573-1:2010)
Dewpoint:
Standard
UL/CSA certification:
NRD-HT Series Specifications
Model
Refrigerant
Flow Rate (SCFM)
Connection
Weight (lbs)
Dimensions (in) (W x D x H)
Power Supply
NRD-HT-25
R134a
25
.75” NPT
53
13.6 x 16.1 x 18.9
115/1/60
NRD-HT-40
R134a
40
1” NPT
77
15.7 x 18.2 x 21.3
115/1/60
NRD-HT-60
R134a
60
1” NPT
88
16.9 x 20.9 x 22.4
115/1/60
NRD-HT-75
R134a
75
1” NPT
90
16.9 x 20.9 x 22.4
115/1/60
NRD-HT-100
R134a
100
1” NPT
128
20.1 x 28.0 x 29.9
115/1/60
NRD-HT-127
R134a
127
1” NPT
132
20.1 x 28.0 x 29.9
115/1/60
Correction Factors for Inlet Air Temperature (CF1)
Capacity Correction Factors Inlet flow rates stated in the specification table assume the following conditions: 180° F inlet temperature, 100° F ambient temperature, and 100 psig operating pressure. For proper operation, compressed air dryers must be sized for the maximum temperatures, minimum pressure and maximum flow rate of the installation. To obtain dryer flow capacity for non-standard conditions use the following formula: Dryer Flow Rate x CF1 x CF2 x CF3 = New Flow Capacity To select a dryer based on the system flow of the compressed air system use the following formula. Then select a dryer that has a flow rate that is equal to or above the minimum required drying capacity. System Flow / CF1 / CF2 / CF3 = Minimum Required Drying Capacity
180
Air Temperature (°F)
140
160
170
195
210
1.00
Factor
1.26
1.13
1.07
0.90
0.81
Correction Factors for Ambient Temperature (CF2)
100
Ambient Temperature (°F)
80
90
105
110
115
120
1.00
Factor
1.22 1.11
0.94 0.89 0.83 0.78
Correction Factors for Operating Pressure (CF3)
100
Inlet Air Pressure (psig)
60
80
120 140 160 180 200
1.00
Factor
0.79 0.91
1.07 1.13 1.18 1.23 1.27
Clean Resources assumes no responsibility or liability for any errors or omissions.
Clean Resources | 1540 Louis Bork Drive, Batavia, IL 60510 | 800-566-0402 | cleanresources.com
v2.1 6-28-2024
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