What is Environmental Test? Constant Temperature (and Humidity) Chamber Walk-in Type Constant Temperature (and Humidity) Chamber Thermal Shock Chamber For Example: 1）Temperature Environment Characteristic of Temperature, Sunshine, Night and Day, Region, Temperature environment by the driving condition and evaluation of Deterioration. ・Operation Temperature Range： -30℃（-40℃）～+80℃（+120℃） ・Temperature Keeping Range：-40℃～+85℃（120℃） 2）Humidity, Water proof environment Characteristic of Humidity, Dew Condensation, rain, car wash and evaluation of Deterioration. ・Atmospheric humidity （ ～100％RH）, Covering water 3）Others Characteristic of Volcano region, Dust, Salt, oils and evaluation of Deterioration https://www.n-denkei.com/singapore/inquiry/

1. (C)2015 Johnson Controls - Hitachi Air Conditioning
Product Introduction
Hitachi-kucho SE, Ltd.
Jun-２６ , 201８

2. 1
(C)2015 Johnson Controls - Hitachi Air Conditioning
Hitachi Environmental Testing Apparatuses
Cosmopia-R
Walk-in Temperature /
Humidity Chamber
Cosmopia-S
Thermal Shock
Chamber
Cosmopia-C
Temperature /
Humidity Chamber

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(C)2015 Johnson Controls - Hitachi Air Conditioning
Contents
1.What is Environmental Test
2.About Hitachi Environmental Testing Apparatus
3.Hitachi Core Technology

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(C)2015 Johnson Controls - Hitachi Air Conditioning
What is Environmental Test?
Temp-
erature
Humi-
dity
Volt-
age
Vibra-
tion
Air
Pres-
sure
Sun
light
Gas
Dust
Noise
Wind
Electronic Device
Precision
Equipment, etc.
Test Sample
「Machine which gives materials, parts and products a
various environmental stresses, and tests reliability」
・・・Products or
parts which are
necessary to
maintain reliability
under various kinds
of environment,
machine will be the
machine to create
the environment.

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(C)2015 Johnson Controls - Hitachi Air Conditioning
What is Environmental Test?
Temp-
erature
Humi-
dity
Volt-
age
Vibra-
tion
Air
Pres-
sure
Sun
light
Gas
Dust
Noise
Wind
Electronic Device
Precision
Equipment, etc.
Test Sample
Field / Industries
・Electronics, Electric
・Cars
・Machine, Precision machinery
・Aerospace and aircraft
・Chemistry, medicine
・University, Research
・Robot
・Printing
・Food
・Housing
・Electronics, Electric
・Cars
・Machine, Precision machinery
・Aerospace and aircraft
・Chemistry, medicine
・University, Research
・Robot
・Printing
・Food
・Housing

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Environmental Testing for Car Fields
A. Power train
Electronic Engine Control
Electronic Fuel Injection
Automatic Speed Control
Engine
Engine Mount Control
Lithium-ion Battery etc.
ABS
Traction Control
Electronic Stability Control
Booster Control etc.
B. Brake Control System
Windshield Wiper
Head Light
Brake Light etc.
C. Light etc.
Navigation
Electronic Toll Collection
Hands Free Talking
GPS
Diagnosis
H. Telecommunications
Airbag
Sheet Belt
Gear Shift Lock
Head up Display
Air Conditioner etc.
D. Safety /
Comfortable System
Active Suspension
4WD
Active Spoiler
Power Steeling
Adaptive Cruise Control
E. Chassis
Control System
AM/FM radio
CD player
TV
Antenna
G. Audio
Anti-theft
Key-less Entry
Immobilizer
F. Security System
出典：日経エレクトロニクス ２００６．５．８

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For Example:
1）Temperature Environment
Characteristic of Temperature, Sunshine, Night and Day,
Region, Temperature environment by the driving condition and
evaluation of Deterioration.
・Operation Temperature Range： -30℃（-40℃）～+80℃（+120℃）
・Temperature Keeping Range：-40℃～+85℃（120℃）
2）Humidity, Water proof environment
Characteristic of Humidity, Dew Condensation, rain,
car wash and evaluation of Deterioration.
・Atmospheric humidity （ ～100％RH）, Covering water
3）Others
Characteristic of Volcano region, Dust, Salt, oils and
evaluation of Deterioration
Environmental Outline for Car
Environmental Testing for Car Fields

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Temp-
erature
Humi-
dity
Volt-
age
Vibra-
tion
Air
Pres-
sure
Sun
light
Gas
Dust
Noise
Wind
Electronic Device
Precision
Equipment, etc.
Test Sample
・Electronics, Electric
・Cars
・Machine, Precision machinery
・Aerospace and aircraft
・Chemistry, medicine
・University, Research
・Robot
・Printing
・Food
・Housing
What is Environmental Test?
Hitachi environmental testing
apparatuses are for reliability
test of temperature / humidity
environment stress test
Field / Industries

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◆Environmental Testing Apparatuses Main Type
Main Purpose Product Exterior Main Purpose
◆Reliability
test
◆Environ-
mental
test use
Constant
Temperature
(and Humidity)
Chamber
●Temperature-Humidity performance
test for electronics parts, PCB etc.
●Temperature- Humidity Cycle test for electronics equipment etc.
●Storable duration examination for food
●Abuse examination for medical products
●Reliability test of the precision equipment
●Cold storage examination, various environmental tests,
Various life-test
(used as screening also)
Walk-in Type
Constant
Temperature
(and Humidity)
Chamber
●Large size and large-capacity equipment examination
(used as screening also)
Thermal
Shock
Chamber
●Screening by the thermal shock of the
overall electronic parts
●Screening of various unit systems
●Inspection of metal, plastic, the plating
processed goods
etc.
◆Screening
Hitachi Environmental Testing Apparatuses
HITACHI

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0
50
100
150
-70
-40
0
50
100
Humidity
(%RH)
Temperature
(℃)
1h
Temperature & Humidity Operation
（Program Operation）
Temperature /
Humidity Test
Constant Temperature (Humidity) Chamber :
Tests for Elements parts (Electronic parts, PCB,
Electronic equipment, Foods, Medical products etc.).
Walk-in type Constant Temperature (Humidity) Chamber :
Test unit for large size parts or assembled parts.
The functional evaluation examination that a person operates
direct test sample in the test condition.
Temp
Humid
Constant Operation
1h
0
50
100
150
-70
-40
0
50
100
Humidity
(%RH)
Temperature
(℃)
80℃／90％
■ Constant Temperature / Humidity Chamber & Walk-in Chamber
DEVELOPMENT TEST RELIABILITY TEST
100℃
-40℃
20℃／60%
50℃／70%
-40℃
80℃／90%
20℃／60%
Temp
Humid

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0
50
100
150
-70
-40
0
50
100
Humidity
(%RH)
Temperature
(℃)
1h
Temperature & Humidity Operation
（Program Operation）
Temperature /
Humidity Test
Constant Temperature (Humidity) Chamber :
Tests for Elements parts (Electronic parts, PCB,
Electronic equipment, Foods, Medical products etc.).
Walk-in type Constant Temperature (Humidity) Chamber :
Test unit for large size parts or assembled parts.
The functional evaluation examination that a person operates
direct test sample in the test condition.
Temp
Humid
Constant Operation
1h
0
50
100
150
-70
-40
0
50
100
Humidity
(%RH)
Temperature
(℃)
80℃／90％
■ Constant Temperature / Humidity Chamber & Walk-in Chamber
Low Temperature TEST High Temperature TEST
Temperature & Humidity TEST
DEVELOPMENT TEST RELIABILITY TEST
100℃
-40℃
20℃／60%
50℃／70%
-40℃
80℃／90%
20℃／60%
Temperature & Humidity
Combination Cycle TEST
Temp
Humid

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■ Constant Temperature / Humidity Chamber
Chamber for testing HIGH / LOW Temperature and Humidity condition
Low Temperature Test
High Temperature Test
Low Temperature Test
High Temperature Test
Evapo-
rator
Built-in
Humidifier
Heater
Air Flow

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Series
■ Constant Temperature / Humidity Chamber

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Cosmopia-C
Temperature /
Humidity Chamber
Series
Constant Temperature
/ Humidity Chamber
Standard 120L～1000L
Frost-Free 400L,800L
Unit for fix or operate by program of
the temperature (humidity).
High Performance 400L,800L
800L, 40℃/95％, 1.0kW
High Load
■ Constant Temperature / Humidity Chamber
Special
Double side access
Large Size
3,780L
4,830L
Rapid Change Excellent
800L；5℃/min,
300L；10℃/min,
235L, 800L；15℃/min
800L；15℃/min(※)
※Under Development

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●Series
■ Constant Temperature / Humidity Chamber (STANDARD MODEL)
●Exterior
Series
Temperature
Control
Range
Inner Capacity（L）
Temperature / Humidity Temperature
120 227 408 800 1000 120 227 408 800 1000
Standard
Series
H：-20～100℃ ● ● ● ● ● ● ● ● ● ●
M：-40～100℃ ● ● ● ● ● ● ● ● ● ●
MH：-40～150℃ ● ● ● ● ● ● ● ● ● ●
№ Item Contents
1 Energy Saving Energy saving by using Inverter control
2 Temp. Change
Speed
1℃/min
3 Special Defrosting function, 3 point off-set
function, USB memory function,
Humidification delay function, Back
trace function, Digital over heat
prevention thermostat., Selectable
operation mode for program.
●Contents
Standard：EC-46
HITACHI
Cosmopia
Series
Temperature
Control
Range
Inner Capacity（L）
Temperature /
Humidity
Temperature
306 800 306 800
Low
Temperature
Ｌ：-70～100℃ ● ● ● ●
ＬH：-70～150℃ ● ● ● ●

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●Series
■ Constant Temperature / Humidity Chamber (HIGH PERFORMANCE)
●Exterior
Series
Temperature
Control
Range
Inner Capacity（L）
Temperature / Humidity Temperature
120 227 408 800 1000 120 227 408 800 1000
High
Performance
Series
M：-40～100℃ － － ◎ ◎ － － － ◎ ◎ －
MH：-40～150℃ － － ◎ ◎ － － － ◎ ◎ －
●Contents
High Performance：EC-46MHPE
№ Item Contents
1 Energy Saving Energy saving by using Inverter control
2 Temp. Change
Speed
3℃/min （High Performance Series）
（1℃/min （Standard Series））
3 Special Continuous Operation performance
（only High Performance）
Defrosting function, 3 point off-set function,
USB memory function, Humidification delay
function, Back trace function, Digital over heat
prevention thermostat., Selectable operation
mode for program.

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By the combination of 2 refrigerators, wide range of refrigerating capacity is controllable.
Main refrigerant cycle by using the 750W
scroll compressor(408L,800L) with invertor
and flow control by the electronic expansion
valve to change the performance in wide range
Refrigerator 1
Refrigerator 2
[1] Improvement of Energy Saving performance
[2] Improvement of temperature change (drop) performance
[3] Continuous operation function
■ HIGH PERFORMANCE Series Special Characteristic
Sub refrigerant cycle by using bigger output
scroll compressor(408L:1,100W;800L:1,500W)
than main refrigerant cycle and flow control by
the electronic expansion valve
Inside
Chamber
Blower
Electronic Expansion Valve
Compressor
Refrigerator 2
Refrigerator 1
Electronic Expansion Valve
Compressor
INV

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■ Equipment Sales Point 《High Performance》
〔1〕Energy Saving Performance
Hitachi will realize high energy saving performance by controlling with
compressor No.1 only at conditions. Compressor No.1 will be controlled by
invertor decrease the power consumption.
Power
Consum
-ption
(kW)
Division
Old New Old New Old New Old New Old New Old New
408L 800L 408L 800L 408L 800L
Operation
Condition
-20℃ +60℃ +85℃ / 85%
0.5
1.0
1.5
2.0
28%
Reduct
30%
Reduct 60%
Reduct
60%
Reduct
50%
Reduct
50%
Reduct
Notes) Data is actual measurement when ambient temperature 23℃ with energy saving mode.

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■ Equipment Sales Point 《High Performance》
〔2〕Temperature Change Performance
At temperature change
performance, this type
improved the refrigerating
ability by operating
refrigerating machine 1
and 2 at the same time and
temperature rise / drop
performance improved to
3 ℃ / minutes
(standard : 1 ℃ / min.).

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■ Equipment Sales Point 《High Performance》
〔3〕Continuous Operation Function
This function is, when the operation is stable and operating by refrigerator
No.1 only, refrigerant No.2 will operate for backup while refrigerant No.1
is under defrost mode. By this function, unit can operate continuously.
Notes: Function only at 10 ~ 40 ℃ condition

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■ Constant Temperature / Humidity Chamber
Rapid Temperature Change Type High Load Type
EC-35EX EC-85EX
EC-25EX
EC-85EX-HL

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■ Constant Temperature / Humidity Chamber
●Exterior
●Series
EC-35EX
Rapid Temperature
Change Type Temperature
Change Speed
Inner
Capacity
Range
Temperature Humidity
10 ℃ / min 306L -70 ～ 150℃ 20 ～ 98％
5 ℃ / min 800L -70 ～ 150℃ 20 ～ 98％
15 ℃ / min
235L
-70 ～ 180℃ 20 ～ 98％
800L
20 ℃ / min 800L -70 ～ 180℃ 20 ～ 98％

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■ Constant Temperature / Humidity Chamber
●Exterior
●Series
Rapid Temperature
Change Type
EC-25EX
Temperature
Change Speed
Inner
Capacity
Range
Temperature Humidity
10 ℃ / min 306L -70 ～ 150℃ 20 ～ 98％
5 ℃ / min 800L -70 ～ 150℃ 20 ～ 98％
15 ℃ / min
235L
-70 ～ 180℃ 20 ～ 98％
800L
20 ℃ / min 800L -70 ～ 180℃ 20 ～ 98％
Under
Development
Correspond
for JEDEC
JESD22-A104C

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(C)2015 Johnson Controls - Hitachi Air Conditioning
◆Environmental Testing Apparatuses Main Type
Main Purpose Product Exterior Main Purpose
◆Reliability
test
◆Environ-
mental
test use
Constant
Temperature
(and Humidity)
Chamber
●Temperature-Humidity performance
test for electronics parts, PCB etc.
●Temperature- Humidity Cycle test for electronics equipment etc.
●Storable duration examination for food
●Abuse examination for medical products
●Reliability test of the precision equipment
●Cold storage examination, various environmental tests,
Various life-test
(used as screening also)
Walk-in Type
Constant
Temperature
(and Humidity)
Chamber
●Large size and large-capacity equipment examination
(used as screening also)
Thermal
Shock
Chamber
●Screening by the thermal shock of the
overall electronic parts
●Screening of various unit systems
●Inspection of metal, plastic, the plating
processed goods
etc.
◆Screening
Hitachi Environmental Testing Apparatuses
HITACHI

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Thermal Shock
Chamber(Air Type)
Air 2 Zone TEST(High・Low temp.)
0
50
100
150
-70
-40
Temperature
(℃)
1h
[Test use example]
Defrost
■ Thermal Shock Chamber
・Re-appearance test of field trouble such as solder crack
・PCB implementation reliability assessment of the material change of
the connection
・Reliability assessment of the package shape change of BGA or CSP
etc.
・Connection resistance assessment with the temperature change of
various connectors
・Confirmation of the crack by the heat strain of the resin mold material
・Confirmation of crazing, detachment and seal leak of the jointed material
・Assessment of the combination of different material molded material (ex.
resin + insert nuts)
・Screening processing before the product shipment
Low Temperature TEST
High Temperature TEST
DEVELOPMENT TEST FAILURE MODE ANALYSIS
⇔ ・Stress ⇒ expansion coefficient
⇒ crack and destruction.
・Stress repeat ⇒ destruction
lower than static strength.
few min. ～ 15 min.

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Chamber for testing HIGH / LOW Temperature
Low Temperature Test
High Temperature Test
Low Temperature Test
■ Thermal Shock Chamber
High Temperature Test
2 Zone TEST(High・Low temp.)
0
50
100
150
-70
-40
Temperature(℃)
1h
Defrost
High Temperature
Chamber
Low Temperature
Chamber
Testing
Chamber
Ambient Temperature Test
Dumper for
Ambient
Temperature

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Series
■ Thermal Shock Chamber
Model Change

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Cosmopia-S
Thermal Shock
Chamber
1000L, 1500L,
2500L, 2900L,
3100L, 5500L
Large Capacity
Liquid Excellent (5.6L、9.4L)
1000 cycle
Continuous
Excellent (70L, 200L)
Unit for rapid change of
temperature
Standard 50L～300L
Thermal Shock Chamber
Series
■ Thermal Shock Chamber

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■ Thermal Shock Chamber
Series
Specification Inner Capacity（L）
Type Cooling function 50 70 100 200 300
Standard L Air-Cooling ● － ● － －
High Performance LH Water-Cooling － ◎ ◎ ◎ ◎
Model Change
Model：ES-307LH
Model：ES-107L
Standard
Model
Air-Cooling System
ES-57L ES-107L
Inner Capacity 47L 105L
Temperature
Range
Low Temp. -70 ℃ ～ 0 ℃
High Temp. 60 ℃ ～ 200 ℃
High Performance
Model
Water-Cooling System
ES-77LH ES-107LH ES-207LH ES-307LH
Inner Capacity 74L 105L 200L 305L
Temperature
Range
Low Temp. -70 ℃ ～ 0 ℃
High Temp. 60 ℃ ～ 200 ℃

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■ Thermal Shock Chamber (Large Capacity)
Large Capacity
Model
Water-Cooling System
ES-1006L ES-1006LH ES-1506L
Inner Capacity 1,080L 1,450L
Temperature
Range
Low Temp. -50 ℃ ～ -10 ℃ -65 ℃ ～ 0 ℃ -50 ℃ ～ -10 ℃
High Temp. 60 ℃ ～ 120 ℃ 60 ℃ ～ 200 ℃ 60 ℃ ～ 120 ℃
Model：ES-1006L,LH Model：ES-1506LH

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■ Thermal Shock Chamber (Large Capacity)
Large Capacity
Model
Water-Cooling System
ES-2506L ES-2906L
Inner Capacity 2,448L 2,880L
Temperature
Range
Low Temp. -65 ℃ ～ 0 ℃
High Temp. 60 ℃ ～ 150 ℃
Model：ES-2506L Model：ES-2906LH

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■ Thermal Shock Chamber (Large Capacity)
Large Capacity
Model
Water-Cooling System
ES-3106L ES-5506L
Inner Capacity 3,130L 5,438L
Temperature
Range
Low Temp. -65 ℃ ～ 0 ℃ -50 ℃ ～ -10 ℃
High Temp. 60 ℃ ～ 130 ℃ 60 ℃ ～ 120 ℃
Model：ES-5506L
Model：ES-3106L

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■ Thermal Shock Chamber
ES-206EX
1,000 Cycle Continuous
Operation Type
Liquid Type
ES-66EX-L

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(C)2015 Johnson Controls - Hitachi Air Conditioning
■ Thermal Shock Chamber(1,000 Cycle Continuous Type)
●Exterior
ES-206EX
Model Maximum Continuous Cycles
Old Model 20～30 Cycles
Standard (New Model) 100 Cycles
Excellent 1,000 Cycles
●Details

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0
50
100
150
-70
-40
Temperature(℃)
1h
Liquid Type 2 Zone test
■ Thermal Shock Chamber(Liquid Type)
Thermal Shock
Chamber(Liquid Type)
Cool Liquid
Bath
Hot Liquid
Bath
Low
Temp.
High
Temp.
Test using Special Liquid: Galden D02TS
⇔
Recorder
(ES-66EX-L)
Recorder
(ES-96EX-L)
Cage
Cool Soak Hot Soak
Default
Position

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(C)2015 Johnson Controls - Hitachi Air Conditioning
About Hitachi Environmental Testing Apparatuses
Unit for fix or operate
by program of the
temperature (humidity).
(Walk-in type)
Standard 4.9～20.3m2 water / air cooling
Series
High Load Excellent 40℃/95%RH 8KW
Integrated Type 3.0m2 water / air cooling

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Exterior Model No.
Ｅ Ｒ － １ ０ ５ Ｈ Ｈ Ｐ － Ｒ
Room
Test Room
Floor Space
５：４．９㎡
６：６．５㎡
７：７．３㎡
１０：９．７㎡
１３：１３．０㎡
１６：１６．２㎡
２０：２０．３㎡
(depend on
floor space)
H：Humidity Type
T：Temperature Only
Model Change No.
Low Temp. Range
H：-30℃
M：-40℃
N：-10℃
Program Type
R：Remote
Condenser Type
No Mark：
Water Cooling Type
Structure
Outer
Unit
Middle
Panel
Inner
Unit
■ Walk-in type Constant Temperature / Humidity Chamber
Test Room Space:
Manufacture by User Request
High Temp.
Range: 80℃
Option Maximum
Temp. : 100, 120, 150℃

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Temperature Control
Middle Panel
Evapo-
rator
Blower
Chamber
Room
Built-in
Humidifier
Heater
Air Flow
Machine
Room
Inside Unit Structure
Evaporator
Built-in
Humidifier
Middle
Panel
■ Walk-in type Constant Temperature / Humidity Chamber
Unit Structure
Low Temperature Test
High Temperature Test

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(C)2015 Johnson Controls - Hitachi Air Conditioning
■Product Model(ex.):EU-125EXH(M)H(T)，EU-125EXH(M)H(T)-R
●Exterior
High Load approval Temperature Unit(Excellent Series)
Approval to test large size PDP, LCD, Car equipment or High load testing parts
●Series
Cooling Method
Temperature
Range
Humidity
Range
Model
Water-Cooling
-10～80℃ 20～95％RH EU-125EXNH
-30～80℃
10～95％RH
EU-125EXHH
-40～80℃ EU-125EXMH
-10～80℃
－
EU-125EXNT
-30～80℃ EU-125EXHT
-40～80℃ EU-125EXMT
Air-Cooling
(Remote
Condenser Type)
-10～80℃ 20～95％RH EU-125EXNH-R
-30～80℃
10～95％RH
EU-125EXHH-R
-40～80℃ EU-125EXMH-R
-10～80℃
－
EU-125EXNT-R
-30～80℃ EU-125EXHT-R
-40～80℃ EU-125EXMT-R
LCD Panel
Recorder
(Option)
Over-heat
Preventer
Emergency
Stop Switch
(Option)
Emergency
Cancel Switch
(Option)
■ Walk-in type Constant Temperature / Humidity Chamber
※Option Maximum temperature: 100,120,150 ℃

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●Exterior
Integrated Walk-in Type Constant Temperature / Humidity Chamber
Cooling
Method
Temperature
Range
Humidity
Range
Model
Water-Cooling
-10～80℃
10～95％RH
ER-35NHP
-30～80℃ ER-35HHP
-40～80℃ ER-35MHP
-10～80℃
－
ER-35NTP
-30～80℃ ER-35HTP
-40～80℃ ER-35MTP
Air-Cooling
(Remote
Condenser
Type)
-10～80℃
10～95％RH
ER-35NHP-R
-30～80℃ ER-35HHP-R
-40～80℃ ER-35MHP-R
-10～80℃
－
ER-35NTP-R
-30～80℃ ER-35HTP-R
-40～80℃ ER-35MTP-R
■ Walk-in type Constant Temperature / Humidity Chamber
Approval to test PDP, large LCD and Car parts, etc. and no need of on-site
construction by making integrated structure.
●Recorder(option)
●Large observation Window(option)
(standard size:W190XH320mm)
●Door Size:W830XH1,800(standard)
※Maximum temperature:
100,120,150 ℃

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JCH Product and Core Technology
Product Core Technology
Hitachi leads the
refrigerant and air
conditioning industries by
the first mass-produced
Scroll Compressor

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Hitachi Scroll
Compressor
Reciprocate Rotary
Compressor Type

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Compressor Structure

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Theory of Scroll Compressor operation
Gas
Suction Inlet
Compression
Fixed Scroll
Revolving
Scroll
Discharge
Port
Suction
Process
Compression
Process
Discharge
Process

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Stable Performance
Scroll（Ambient Temperature 20℃）
Scroll
（Ambient Temperature 35℃）

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Vibration and Noice
Scroll 60 90

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Compressor comparison
Item
Hitachi Scroll
Compressor
Reciprocate Rotary
Efficiency High Efficiency
●Low leakage of high to
low pressure
●Top clearance
needless
Low Efficiency
●Easer to leak
●Need top clearance
Low Efficiency
●Easer to leak
●Need top clearance
Reliability High Reliability
●Simple structure
●No suction/discharge
valve
●Liquid injection cooling
●Difficult structure
●With suction /
discharge valve
●Medium structure
●No suction valve
●With discharge valve
Vibration Small turning torque
non uniformity causes
Small Vibration
Reciprocating
movement causes
large vibration
Large turning torque non
uniformity causes
large vibration
Noise Small Noise by no
discharge valve
Large noise by
reciprocating movement
and discharge valve
Large noise by
discharge valve

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JCH Product and Core Technology
■ Standard Mechanism
Water Cooling

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JCH Product and Core Technology
■ Hitachi Special Mechanism
Air Cooling

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Cooling Mechanism Comparison
Item Air Cooling Water Cooling
Hard-
ware
Out-
door
Equip-
ment
Outdoor Unit ( 1 or 2)
(Included in Indoor unit)
Cooling Tower
●Pump, Valve, Strainer for cooling water
●Water temperature control system
Refrigerant Pipe Water pipe, Cooling water
●Power unit for Cooling Tower and pump
Indoor
Epuip-
ment
Unit
●Refrigerant Pipe
Unit
●Thermometer, Pressure Gauge, Valve,
Strainer
●Cooling Water Pipe
Maintenance,
Management
Blocking direct sunshine to
the outdoor unit
Cooing water quality management
(sludge, corrosive substance)
Cooling water refill
Strainer cleaning
Power consumption of cooling tower and
pump
Initial Cost
Running Cost
Maintenance Fee

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Cosmopia-R
Walk-in Temperature /
Humidity Chamber
Cosmopia-S
Thermal Shock
Chamber
Cosmopia-C
Temperature /
Humidity Chamber
Shimizu Works

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END
Thank you for Listening
Manufactured：Hitachi-kucho SE, Ltd.
Sales：Hitachi-Johnson Controls Air Conditioning Inc.

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memo
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