Overview
modular air handler is a versatile component in heating, ventilation, and air conditioning (HVAC) systems, designed to provide flexibility in installation and operation. Unlike traditional air handlers, modular units consist of multiple sections or modules that can be combined in various configurations to meet specific space constraints and performance requirements.
Parameter
Cooling, water volume, water resistance
Cooling conditions: Inlet air dry bulb temperature 27℃, wet bulb temperature 19.5℃, inlet water temperature 7℃, outlet water temperature 12℃
|
Model |
Two-row pipe |
Four-row pipe |
six-row pipe |
eight-row pipe |
||||||||
|
cooling(KW |
Water volume(m³/h) |
Water resistance (KPa) |
cooling(KW) |
Water volume (m h) |
Water resistance (KPa) |
cooling(kW) |
Water volume (m³/h) |
Water resistance (KPa) |
cooling (KW |
Water volume (m³/h) |
Water resistance (KPa) |
|
|
ZK-05 |
18.8 |
3.23 |
10.1 |
29.4 |
5.01 |
9.76 |
37.8 |
6.49 |
16.99 |
45.7 |
7.85 |
10.44 |
|
ZK-10 |
34.7 |
5.89 |
10.5 |
58.6 |
10.35 |
11.65 |
75.4 |
12.96 |
10.08 |
91.2 |
15.70 |
12.82 |
|
ZK-15 |
53.4 |
9.16 |
9.8 |
87.9 |
15.08 |
7.21 |
113.1 |
19.5 |
12.11 |
136.8 |
23.52 |
15.12 |
|
ZK-20 |
70.6 |
12.14 |
9.8 |
117.3 |
20.16 |
8.25 |
150.8 |
26.21 |
14.07 |
182.4 |
31.96 |
17.48 |
|
ZK-25 |
92.9 |
15.83 |
11.6 |
146.1 |
25.12 |
10.24 |
188.1 |
33.90 |
11.77 |
227.5 |
39.11 |
14.76 |
|
ZK-30 |
113.6 |
19.2 |
11.8 |
175.2 |
30.12 |
11.16 |
225.6 |
38.90 |
13.10 |
273.4 |
47.00 |
16.28 |
|
ZK-40 |
144.4 |
24.82 |
12.4 |
232.8 |
40.03 |
12.93 |
300.2 |
51.61 |
15.73 |
362.2 |
62.27 |
19.20 |
|
ZK-50 |
180.5 |
30.61 |
10.4 |
292.3 |
50.25 |
7.47 |
375.3 |
64.52 |
17.00 |
435.80 |
74.93 |
15.70 |
|
ZK-60 |
216.6 |
37.24 |
9.4 |
349.2 |
60.04 |
7.47 |
450.3 |
77.42 |
17.00 |
544.80 |
93.67 |
15.70 |
|
ZK-80 |
287.2 |
49.1 |
9.1 |
464.6 |
79.88 |
8.5 |
598.4 |
102.89 |
19.5 |
724.8 |
124.62 |
17.9 |
|
ZK-100 |
357.0 |
61.38 |
9.5 |
578.2 |
99.41 |
8.5 |
746.5 |
128.35 |
19.5 |
904.2 |
155.46 |
17.9 |
|
ZK-120 |
428.4 |
73.65 |
9.5 |
693.6 |
118.91 |
8.5 |
895.2 |
153.91 |
19.5 |
1084.8 |
186.51 |
17.9 |
|
ZK-160 |
591.2 |
101.65 |
11.2 |
921.6 |
158.48 |
10.3 |
1190.4 |
204.67 |
20.1 |
1443.2 |
255.93 |
32.4 |
|
ZK-200 |
740.1 |
127.25 |
12.8 |
1152.2 |
199.3 |
13.1 |
1488.1 |
255.86 |
26.4 |
1804.3 |
310.22 |
42.4 |
Note: The performance parameters of the unit at a headwind speed of 2.5m/s
Cooling condition correction factor
Correction Factor K1 for Cooling Capacity and Water Flow under Different Inlet Air and Water Temperatures
|
air temperature |
Water temperature℃ |
|||||
|
Wet bulb Temperature |
Dry bulb Temperature |
5/10 |
6/11 |
7/12 |
8/13 |
9/14 |
|
17 |
19-27 |
0.83 |
0.76 |
0.67 |
0.62 |
0.57 |
|
18 |
20-30 |
0.94 |
1.85 |
0.76 |
0.68 |
0.58 |
|
19 |
21-31 |
1.07 |
0.97 |
0.88 |
0.79 |
0.71 |
|
19.5 |
21-33 |
1.15 |
1.06 |
1.00 |
0.86 |
0.78 |
|
20 |
22-33 |
1.20 |
1.10 |
1.03 |
0.90 |
0.81 |
|
21 |
23-36 |
1.34 |
1.24 |
1.14 |
1.03 |
0.93 |
|
22 |
24-39 |
1.48 |
1.38 |
1.28 |
1.18 |
1.07 |
|
23 |
25-42 |
1.63 |
1.53 |
1.43 |
1.32 |
1.22 |
|
24 |
26-45 |
1.79 |
1.69 |
1.59 |
1.47 |
1.36 |
|
25 |
27-48 |
1.75 |
1.64 |
1.53 |
||
|
26 |
28-48 |
1.92 |
1.81 |
1.70 |
||
|
27 |
29-48 |
2.09 |
1.98 |
1.87 |
||
|
28 |
30-50 |
2.26 |
2.16 |
2.05 |
||
|
29 |
31-52 |
2.40 |
2.32 |
2.2 |
||
Correction Factor K3 for Cooling Capacity and Water Flow under Different Inlet Air and Water Temperatures
|
Headwind speed |
2.0 |
2.3 |
2.5 |
2.7 |
3.0 |
3.3 |
3.5 |
|
coefficient |
0.81 |
0.92 |
1.0 |
1.07 |
1.17 |
1.26 |
1.32 |
Correction Factor K2 for Water Resistance under Different Inlet Air and Water Temperatures
|
air temperature |
Water temperature℃ |
|||||
|
Wet bulb Temperature |
Dry bulb Temperature |
5/10 |
6/11 |
7/12 |
8/13 |
9/14 |
|
18 |
20-30 |
0.90 |
0.74 |
0.60 |
0.49 |
0.36 |
|
19 |
21-31 |
1.13 |
0.95 |
0.77 |
0.65 |
0.54 |
|
19.5 |
21-33 |
1.35 |
1.15 |
1.00 |
0.78 |
0.63 |
|
20 |
22-33 |
1.41 |
1.20 |
1.05 |
0.82 |
0.67 |
|
21 |
23-36 |
1.72 |
1.49 |
1.27 |
1.06 |
0.86 |
|
22 |
24-39 |
2.08 |
1.82 |
1.57 |
1.34 |
1.12 |
|
23 |
25-42 |
2.48 |
2.20 |
1.93 |
1.66 |
1.14 |
|
24 |
26-45 |
2.95 |
2.62 |
2.33 |
2.03 |
1.76 |
|
25 |
27-48 |
2.78 |
2.46 |
2.16 |
||
|
26 |
28-48 |
3.30 |
2.94 |
2.60 |
||
|
27 |
29-48 |
3.80 |
3.50 |
3.12 |
||
|
28 |
30-50 |
4.14 |
4.10 |
3.70 |
||
|
29 |
31-52 |
4.14 |
4.10 |
3.70 |
||
Correction Factor K4 for Water Resistance under Different Inlet Air and Water Temperatures
|
Headwind speed |
2.0 |
2.3 |
2.5 |
2.7 |
3.0 |
3.3 |
3.5 |
|
coefficient |
0.9 |
0.96 |
1.0 |
1.04 |
1.1 |
1.16 |
1.2 |
Ps:1.The above correction factors are determined based on the average values of various units. For small units (05~15), multiply by 0.95; for large units (50-200), multiply by 1.08.
2.The above correction factors are approximate values and are for reference only.
Correction under different wind speeds, inlet air temperature, and water temperature conditions:
Actual cooling capacity = Cooling capacity from Table 1 × K1 × K3
Actual water flow = Water flow from Table 1 × K1 × K3
Actual water resistance = Water resistance from Table 1 × K2 × K4
Example: Selecting YG-20 air conditioner, the cooling coil face wind speed is 2.5 m/s. According to Table 1, the cooling capacity is 150.8 kW, water flow is 26.21 m³/h, and water resistance is 14.07 kPa. Determine the actual cooling capacity, water flow, and water resistance when the inlet air dry-bulb temperature is 27°C, wet-bulb temperature is 21°C, inlet water temperature is 7°C, and outlet water temperature is 12°C.
Solution: From Table K1, the correction factor K1 = 1.14. From Table K2, the correction factor K2 = 1.27.
Therefore:
Actual cooling capacity (Q) = Standard condition cooling capacity × K1 = 150.8 × 1.14 = 171.91 kW
Actual water flow (V) = Standard condition water flow × K1 = 26.21 × 1.14 = 29.88 m³/h
Actual water resistance (P) = Standard condition water resistance × K2 = 14.07 × 1.27 = 17.87 kPa
Heating, water volume, water resistance
Heating conditions: air inlet temperature 15℃, water inlet temperature 60℃
|
Model |
Two-row pipe |
four-row pipe |
six-row pipe |
eight-row pipe |
||||||||
|
Heating(KW) |
Water volume (m/h) |
Water resistance (KPa) |
Heating (KW |
Water volume (mh) |
Water resistance (KPa) |
Heating (KW) |
Water volume (m³h) |
Water resistance (KPa) |
Heating(KW) |
Water volume m/h) |
Water resistance (KPa) |
|
|
ZK-05 |
34.1 |
3.23 |
10.1 |
50.6 |
5.01 |
9.76 |
59.2 |
6.49 |
16.99 |
77.1 |
7.85 |
10.44 |
|
ZK-10 |
67.1 |
5.89 |
10.5 |
99.8 |
10.35 |
11.65 |
124.8 |
12.96 |
10.08 |
151.0 |
15.70 |
12.82 |
|
ZK-15 |
101.8 |
9.16 |
9.8 |
149.7 |
15.08 |
7.21 |
173.5 |
19.5 |
12.11 |
205.1 |
23.52 |
15.12 |
|
ZK-20 |
135.6 |
12.14 |
9.8 |
199.0 |
20.16 |
8.25 |
248.8 |
26.21 |
14.07 |
289.3 |
31.96 |
17.48 |
|
ZK-25 |
168.7 |
15.83 |
11.6 |
249.5 |
25.12 |
10.24 |
311.2 |
33.90 |
11.77 |
353.3 |
39.11 |
14.76 |
|
ZK-30 |
202.6 |
19.2 |
11.8 |
304.5 |
30.12 |
11.16 |
380.9 |
38.90 |
13.10 |
448.3 |
47.00 |
16.28 |
|
ZK-40 |
270.4 |
24.82 |
12.4 |
399.2 |
40.03 |
12.93 |
480.8 |
51.61 |
15.73 |
592.4 |
62.27 |
19.20 |
|
ZK-50 |
337.3 |
30.61 |
10.4 |
512.3 |
50.25 |
7.47 |
556.8 |
64.52 |
17.00 |
641.8 |
74.93 |
15.70 |
|
ZK-60 |
404.7 |
37.24 |
9.4 |
609.4 |
60.04 |
7.47 |
581.2 |
77.42 |
17.00 |
766.8 |
93.67 |
15.70 |
|
ZK-80 |
539.5 |
49.1 |
9.1 |
796.0 |
79.88 |
8.5 |
386.2 |
102.89 |
19.5 |
1006.0 |
124.62 |
17.9 |
|
ZK-100 |
674.5 |
61.38 |
9.5 |
985.1 |
99.41 |
8.5 |
1127.6 |
128.35 |
19.5 |
1272.3 |
155.46 |
17.9 |
|
ZK-120 |
808.9 |
73.65 |
9.5 |
1185.9 |
118.91 |
8.5 |
1362.5 |
153.91 |
19.5 |
1533.6 |
186.51 |
17.9 |
|
ZK-160 |
1077.8 |
101.65 |
11.2 |
1576.0 |
158.48 |
10.3 |
1688.4 |
204.67 |
20.1 |
2083.2 |
255.93 |
32.4 |
|
ZK-200 |
1346.2 |
127.25 |
12.8 |
1970.8 |
199.3 |
13.1 |
2032.7 |
255.86 |
26.4 |
2606.2 |
310.22 |
42.4 |
Note: 1. The unit's performance reference at a headwind speed of 2.5m/s
2. The coil is a dual-purpose coil for hot and cold applications
Key Features of Modular Air Handlers
●Flexible Configuration:
Modular air handlers can be assembled in different combinations, allowing customization to fit unique building layouts and space limitations.
●Scalability:
These units can be expanded or reconfigured as building needs change, making them suitable for both new constructions and retrofits.
●Energy Efficiency:
Many modular air handlers are designed with high-efficiency components, such as variable-speed fans and advanced heat exchangers, to optimize energy consumption.
●Ease of Maintenance:
The modular design often allows for easier access to components, simplifying maintenance and reducing downtime.
Applications of Modular Air Handlers
Modular air handlers are commonly used in commercial and industrial settings, including:
●Office Buildings: Providing consistent and efficient air distribution across multiple floors.
●Hospitals: Ensuring precise temperature and humidity control in various departments.
●Manufacturing Facilities: Maintaining optimal air quality and temperature for sensitive equipment.
●Educational Institutions: Delivering reliable HVAC solutions for classrooms and auditoriums.
FAQ
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