Modul r Air Handling Unit MKZ series Product Catalogue 3
3000 ~200000m /h (1800~125000CFM)
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Contents 1. Nomenclature 2. Introduction 3. Features 4. Component options 5. Typical Structure Specifications 6. Mechanical Specifications 7. Quick Selection 8. Section Data
9. Typical combination
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1. Nomenclature
MKZ 05 Y 4 / C – A 06 09 A01
Midea Modular Handling Unit
Air
Customized No., st A01: the 1 time
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Air Flow, ×1000m /h
Pipe connecting mode, Y: right-handed; Z: left-handed
Coil rows, 2: 2-rows; 4: 4-rows; 6: 6-rows; 8: 8-rows.
Design serial No., rd C: 3 generation
Width modulus, M, 1M= 100mm
Height modulus, M, 1M= 100mm
Panel thickness, A: 25mm; B: 35mm; Omit: 50mm.
Note: 1. Modulus is the internal dimension of unit. The external dimension of unit can be calculated as followed: Width = width modulus × 100 + panel thickness ×2; Height = height modulus × 100 + panel thickness × 2+height of base frame. 2. Pipe connecting mode: Along to the air flow direction, if the connection pipes are on the left side, the unit is left-handed connection unit. Otherwise is the right-handed connection unit.
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2. Introduction Midea have been manufacturing air handling units throughout the world for a couple of years. Midea participated in compilation of China Standard about central-station air handling units. This proven abundant experience enables us to develop a world class air handling unit; the 3rd generation of Modular Air Handling Unit (MAHU) is a combination of the elements as follow:
Quality The Midea MAHU meet the demands for improved indoor air quality, low sound, high operating efficiency and smaller mechanical rooms require a better product for today’s air handler market. The MAHU’s construction provides unequaled thermal efficiencies and low l eak rates. In addition, the MAHU offers tremendous flexibility in sizing, component options, and unit arrangements to meet the indoor air quality, operating efficiency, sound and installation requirements for today’s extensive commercial and custom markets. Midea combines comprehensive performance certifications with thorough laboratory testing and manufacturing methods. Together, these elements assure that each MAHU operates predictably and reliably throughout the life of the unit.
Flexibility By virtue of its unique frameless design, the Midea MAHU offers tremendous flexibility. Numerous section and component options, and the ability to arrange components in whatever arrangement is required, allow to be customized to the requirements of each job, without expensive field modifications. Finally, the MAHU can be shipped as a completely assembled unit, in modules or by component sections that require smaller sections for passage through the building.
Serviceability The Midea MAHU is designed to provide easy access to interior components for routine maintenance and service. The easy-to-move panels and access doors of the units provide complete access to the unit interior i nterior and components.
Selection software To help the customer easily define their product requirements, a user-friendly software selection program is provided. The program leads the user through the selection process by pertinent input data for all components required. Component sections are selected by placing them on a configuration screen (Figure 4). Once the unit layout is defined, the options and accessories are identified. The program gives immediate feedback regarding fan and coil selection, offering a choice of many different options based on the performance inputs. Once final component selections 4
have been made, the program provides all output needed for specification, including unit specification, dimension drawings, weights, fan curves, etc.
Wide usage The Midea MAHU can be widely used in hotels, restaurants, factories, hospitals, airport, railway stations, exhibition halls, office buildings, shopping centers, laboratories and other central air-conditioning systems.
3. Features Low leakage structure Frameless structure and modulus panel design. Panels are double-skin with injection of high density polyurethane. The outer skin is anti-corrosion color-coated steel sheet, the inner skin is galvanized steel sheet, the density of polyurethane is more than 50kg/m3, and the thermal conductivity is 0.03W/m2K. The unit cabinet consists of panels attaching to each other by combining with male and female plastic cards and 5
sealing strip. The air leakage rate is less than 0.29%. The thermal transmittance of the unit casing reaches the Class T2 of Eurovent standard EN1886. The thermal bridging factor of the casing reaches Class TB2. Units will not sweat when exterior room temperature is 27 ℃, relative humidity is 90%.
Figure 1 Structure
Figure 2 Steel joint
1
Panel Ⅰ
2
3
Plastic article
4
5
Color-coated steel sheet
6
Galvanized steel sheet
7
polyurethane foam
8,9
Sealing material
10,11,12
Panel Ⅱ Plastic article reinforcement
Sealing parts of plastic card article
Modulus design The MAHU adopt modulus design. Unit dimensions, including width, height and length, change according to the modulus (M). 1M=100mm. The combination and installation of the modular unit is flexible.
Free combination of numerous function sections Mixing section, primary efficiency filter section, medium efficiency filter section, high efficiency filter section, cooling coil section, heating section, humidifier section, sound attenuator section, service section, heat recovery section, fan section. Different function sections can be selected according to the specific applications.
Attractive outlook The MAHU adopt frameless structure and the insert fastening bolts are covered by haps which are accordance with the color of the outer skin, and clear, smooth appearance make the outlook attractive. Furthermore the unit casing strength reaches Class D1 of Eurovent standard EN1886.
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4. Component options and accessories Unit dimension Panel
Base frame Fan Coil Eliminator Drain pan Filter
Humidifier
3M increments for height and width, 1M=100mm 0.5mm thickness, color-coated outer steel sheet, galvanized inner steel sheet ; 25mm, 35mm, 50mm thickness, polyurethane foam filler Galvanized steel sheet or channel steel Forward curved or backward curved Copper tube, aluminum fin, galvanized steel coil frame; 2 rows, 4 rows, 6 rows, 8 rows r ows coil PVC or aluminum Galvanized steel or stainless steel Plate type filter: Nylon, aluminum or nonwoven fabric; Bag type filter: Nonwoven fabric; Cartridge type filter: Superfine fiberglass; Wet film humidifier, high pressure spray humidifier, dry steam humidifier, electric steam humidifier Multiple depths: 600mm, 900mm, 1200mm Heat wheels or plate heat exchangers Heating coils or electric heaters Galvanized steel sheet Galvanized steel, aluminum steel, Inward opening , outward opening, with window or not Standard or ultraviolet light
Sound attenuator Heat recovery Heating Flow equalization Damper Access door Light Humidity sensor Temperature sensor Automatic damper, damper actuator Pressure difference switch, pressure switch Start-up cabinet, frequency conversion cabinet
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5. Typical structure
1 5 9 13
Access Door Leaving Air Panel Components Fan Coil Fasten Components
2
Cooling Coil
3
Heating Coil
4
Motor
6
Bag Filter
7
Attenuator
8
Damper
11
Angle Steel Joint
12
Partition Plate
16
Light
10 14
Section Sealing Components Plate Filter
15
Strengthen Column
Base frame Unit sections are mounted on galvanized steel or channel steel base frame for ease of shipment and handling. The frames provide holes for section connection, and holes for fork-lift truck. There is a guard rail cross the bottom in the holes to prevent unit damage by trucks. The base frame can be used in lieu of concrete plinths or other additional bases that are used on site. However, for high static pressure application, additional concrete plinths or other additional bases are required at site to raise the MAHU for drain pan’s U-trap.
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Double skin panel The outer skin is color-coated steel sheet that is resistant to scratch and nicks and shall allow for easy cleaning. The inner skin is galvanized steel sheet. The panels are 50mm thick double skin type with injected polyurethane foam insulation. The panel insulation shall not absorb moisture and is rot resistant. The insulation material shall be totally enclosed in the panel to avoid any possibility of insulation being exposed to air stream. The panel insulation shall have a thermal 2 conductivity value of 0.03W/m K. The panel is sturdy and, in its standard design, unit sections of the same width can be stacked on the top of one another, without the need of additional reinforcement.
Drain pan Cooling coil and humidifier are installed on reversed U-shaped support plates. A U-shaped channel is pressed in the middle of drain pan to promote proper condensate removal. The galvanized drain pan is coated to inhibit the growth of algae and fungi. 10mm insulation is provided between the drain pan and the bottom panel. Stainless steel drain pan is optional.
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Access door Access section, fan section, humidifier section and heat-exchanged coil sections shall be equipped with access doors. The access doors are equipped with locking handle which is controllable internally and externally. A durable seal is around the full perimeter of the door’s frame to prevent air leakage. Lights in unit are interlocked with doors. Light is fixed above access door, and shall be equipped with a weather-resistant plastic switch box.
Motor mounting Motor mounting base frame is consisted of 2 slide rails and a basement with long through-holes. Motor can be moved freely in the plane to reach the correct point then fasten bolts. Installation and maintenance of motors are time saving jobs.
Vibration protector The fan motors are mounted on a rigid base frame which is supported by effective 10
spring shock absorber. Rigid protecting components are equipped at the base frame to protect fans, motors and spring shock absorber during transportation.
Protector
6. Mechanical specifications Fan assembly The vibration levels of the complete fan assembly (fan wheel, motor and drives assembled as a whole system) shall be checked and dynamically balanced in the factory.
Forward fan Backward fan Fans are mainly consisted of scroll, impeller, frame, bearing and shaft. The scroll is made of hot galvanized steel sheet. Its side plate has an outline complying with aerodynamics. The impeller is made of high grade hot galvanizing steel sheet and is designed to a special configuration according to aerodynamics to make the efficiency highest and the noise lowest. The high quality ball bearings are air-sealed, with preset lubricating oil, and of automatically alignment. The shafts are made of 40 Cr or C45 carbon steel bars. They are coated after assembly in order to provide corrosion 11
resistance. The fans are AMCA certified. Fan connection shall be isolated from unit casing by a flexible canvas duct mounted at fan discharge outlet. Fan and motor assembly shall be internally isolated from the unit casing with spring isolators, furnished and installed i nstalled by the unit manufacturer. The drive assembly shall consist of belt pulley and motor. The belt type shall be SPZ or SPA grades, oil and heat resistant, antistatic and avoiding electric discharges. Motor shall be mounted on a sliding base to permit adjustment of drive belt tension. Standard motor shall be horizontal foot mounting, induction motor, totally enclosed fan-cooled with IP55 protection. Unit shall be provided with a painted metal sheet belt guard. The belt guard shall be rigidly attached to the fan base support structure. Fan assembly section shall be equipped with an access door with window on the drive side of the fan.
Coil Coils are consisted of copper-tubes and aluminum fins. The fins are sine-wave design with slits for better heat transfer efficiency and moisture carry-over limit performance. All coils are installed with space between each component for cleaning and mounting of controls. All cooling coils are mounted over a drain pan. The cooling coil rests on U-shape supporters which are located over the drain pan. The drain pan extends beyond the leaving side of the t he coil to help recover condensate. Coil connections always extend through out of the unit cabinet, allowing for the easy connection of valves and piping. Vents are located l ocated outside the cabinet.
Filter Filter section is consisted of galvanized steel filter frame structure and an access door for filter maintenance. Primary efficiency plate filter is designed as standard. Bag, cartridge and other high efficiency filters may be optioned. The structure of filters are stable and firm, high strength and intensity, and easy changing. Filter shall be loaded from both left and right sides. Front loaded may be optioned. The filters efficiency may up to 95%. 12
Plate type filter
Bag type filter
Humidifier Wet film vaporization humidifier is a type of enthalpy humidifier or evaporation gasification humidifier. Through the principle of exchange of heat and moisture, the air is humidified and cooled. The medium is inorganic material which is high-life, high reliability, clean, good heat conduction and bacteria resistance.
7. Quick selection 13
Quick selection procedures 3
Step 1: Determine the airflow (m /h) or total cooling capacity (kW). Step 2: Use the table below to determine the unit size by picking the closest airflow or total cooling capacity. Step 3: The unit width and height are the same for all sections. For the unit length, use Table B. Standard section length to determine the overall unit length. Step 4: Determine the nominal unit details (unit weight, cooling coil water pressure drop, water flow and motor input power) using Table A.
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Table A: Quick Select Unit dimension
Air
Cooling
Residual
flow
capacity
pressure
Width
Height
weight
m3/h
kW
Pa
mm
mm
kg
MKZ03
3000
13.5
200
900
930
MKZ05
5000
25
220
1150
MKZ08
8000
44
310
MKZ10
10000
55
MKZ12
12000
MKZ15
Cooling coil
Water
Motor
flow
input
kPa
L/s
kW
390
13.1
0.65
1.1
930
470
16.2
1.21
3
1400
1130
590
30.7
2.13
3
310
1600
1130
630
41.1
2.66
4
72
330
1800
1130
720
27.1
3.48
4
15000
88
350
1800
1330
790
27.2
4.25
5.5
MKZ18
18000
102
380
2100
1330
920
33.7
4.93
7.5
MKZ20
20000
118
410
2100
1430
1078
35.2
5.70
11
MKZ25
25000
152
410
2400
1580
1295
37.5
7.35
11
MKZ30
30000
180
420
2400
1880
1536
49.9
8.70
11
MKZ35
35000
208
460
2500
2080
1800
24.5
10.05
18.5
MKZ40
40000
235
510
2500
2280
2050
24
11.36
18.5
MKZ45
45000
260
510
2500
2530
2450
23.6
12.57
30
Model
Note: 1
Unit
water pressure drop
Stand tandar ard d coo coolin ling g cond condit itio ion: n: ent enter erin ing g air air DB temp. temp. is is 27℃, WB temp temp.. is 19.5 19.5℃; entering water
、
temp. is is 7℃, le leaving wa water te temp. is is 12 12℃. 2 Stan Standar dard d heat heating ing condit condition ion:: enter entering ing air DB tem temp. p. is is 7℃, enter entering ing water water temp temp.. is 60℃, leavi leaving ng water temp. is 50℃. 3 Coil is copper-tube and aluminum fin type, the water velocity is 0.8-1.8m/s. 、
、
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Table B: Unit Length L1
L2
L3
mm
mm
mm
MKZ03Y4/C
1625
1125
1000
MKZ05Y4/C
1625
1125
1000
MKZ08Y4/C
1625
1025
1000
MKZ10Y4/C
1625
1025
1000
MKZ12Y4/C
1625
1125
1000
MKZ15Y4/C
1625
1125
1000
MKZ18Y4/C
1625
1125
1000
MKZ20Y4/C
1625
1225
1000
MKZ25Y4/C
1625
1225
1000
MKZ30Y4/C
1625
1400
1000
MKZ35Y4/C
1625
1525
1000
MKZ40Y4/C
1625
1525
1000
MKZ45Y4/C
1625
1525
1000
Model
Note: L1, length of cooling coil section; L2, length of fan section; L3, length of humidifier section.
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8. Section Data Component sketches
Name
Sketch
Name
Mixing chamber
Entering chamber
Plate filter
Bag filter
Cartridge filter
Water cooling coil
Water heating coil
Electric heating coil
Wet film humidifier
Steam humidifier
Attenuator
Eliminators
Access door
Fan
Sketch
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Fan discharge arrangement Horizontal air supply
Model
Horizontal Length
Width
Height
MKZ03Y4/C
750
900
600
MKZ05Y4/C
780
1025
690
MKZ08Y4/C
920
1200
830
MKZ10Y4/C
990
1320
900
MKZ12Y4/C
1050
1490
985
MKZ15Y4/C
1060
1650
1080
MKZ18Y4/C
1060
1650
1080
MKZ20Y4/C
1160
1750
1230
MKZ25Y4/C
1260
1920
1340
MKZ30Y4/C
1360
2160
1490
MKZ35Y4/C
1360
2160
1490
MKZ40Y4/C
1450
2290
1680
MKZ45Y4/C
1450
2290
1680
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Vertical air supply
Model
Vertical Length
Width
Height
MKZ03Y4/C
730
900
630
MKZ05Y4/C
830
1025
710
MKZ08Y4/C
980
1200
810
MKZ10Y4/C
1000
1320
870
MKZ12Y4/C
1080
1490
940
MKZ15Y4/C
1140
1650
1020
MKZ18Y4/C
1140
1650
1020
MKZ20Y4/C
1250
1750
1130
MKZ25Y4/C
1320
1920
1220
MKZ30Y4/C
1460
2160
1370
MKZ35Y4/C
1460
2160
1370
MKZ40Y4/C
1630
2290
1510
MKZ45Y4/C
1630
2290
1510
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Water pipe connection of cooling coil
(mm) Model
Water pipe
A
B
C
D
E
MKZ03Y4/C
DN40
160
115
447
-
-
MKZ05Y4/C
DN40
160
115
447
-
-
MKZ08Y4/C
DN50
155
120
650
-
-
MKZ10Y4/C
DN50
160
120
650
-
-
MKZ12Y4/C
DN65
160
115
650
-
-
MKZ15Y4/C
DN65
155
120
855
-
-
MKZ18Y4/C
DN65
160
115
850
-
-
MKZ20Y4/C
DN65
160
125
957
-
-
MKZ25Y4/C
DN65
160
125
1090
-
-
MKZ30Y4/C
DN65
160
125
576
233
576
MKZ35Y4/C
DN65
160
125
640
231
640
MKZ40Y4/C
DN65
160
125
766
440
766
MKZ45Y4/C
DN65
160
125
893
232
893
Note: MKZ03-25Y4/C units have one cooling coil heat exchanger, while MKZ30-45Y4/C units have two. One cooling coil has one drain pan. The condensate in the upper drain pan is discharged to the lower one through a plastic water pipe.
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9. Typical combination The simplest combination This combination is applicable in residential comfort places. It is structure simple, space-saving and investment less.
The most economical combination This combination including mixing and primary filter function. It is applicable in resident comfort and energy saving places.
Industrial combination 1 Heat and moisture can be handled in this combination. It is applicable in places where are more comfort needed and there are higher requirements on temperature and humidity.
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Industry combination 2 Heat and moisture can be handled in this combination. It is applicable in places where are more comfort needed and there are higher requirements on temperature and humidity. The wet film humidifier here has a function as an eliminator.
The manufacturer has a policy of continuous product improvement, and reserves the right to alter any details of the products at any time without notice.
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