iTOMIC CO2 HeatPump

Case Study

1Installations
Japan and oversea case study list

Itomic CO2 Heat Pump water heaters have been adopted world-wide

Garden Hotel Shanghai(China)

A second house(China)

Cattle barn on ranch(Japan)

Nightingale Apartment(Australia)

Comfort Hotel Himeji(Japan)

Kanwan LPC(Korea)Yarra’s Edge(Australia)

For the details, click the Thumbnail.

Beer Factory(China)Chicken processing
company (Taiwan)

American school(Japan)Dalian Futures Center(China)

Brown Brothers winery(Australia)

2Garden Hotel Shanghai (China)

HotelDHWHotels

Garden HotelShanghai
NEDO Japan, joint with theChinese government,installed Itomic CO2 heatpumps in this prestigious
hotel, in order to disseminate
the advanced energy-saving
technology as a pilot case.

3

Garden Hotel Shanghai (China)
Products

Units：CO2 Heat pump water heater

Model:

CHP-3000U

Hotel

DHW

Cost saving

Number： 4 units

Before:172,713 yuan/yr

After:

90,592 yuan/yr

Saved:

82,121 yuan/yr（data of 2014）

Annual cost
Reduction
Approx.

47.5％

4

Garden Hotel Shanghai (China)

HotelDHWHigh story（21F～33F）
高架水槽
Elevated watertank

CO2ヒートポンプ
CO2 Heat pump

ミキシングバルブ
Mixingvalve
Volumetric
容積式熱交換器
HeatExchanger

循環ポンプ
Circulation pump

Steam boiler
蒸気ボイラー5

A second house（China）

VillasHeatingVillas

A second housein Northern China
Itomic CO2 Heat pumps wereadopted in this vast 3,000m2
accommodation and recreational
facility as a floor heating purpose. A
stable heating even in the severely
cold weather, together with a safe
and clean operation due to noncombustion system of the product,
was acclaimed highly by the owner.

6

A second house（China）

Villas VillasHeating

Products
Units :CO2 Heat pump water heater

Model：CHP-80Y2
Numbers：5 units

Ambient temperature in a wintertime is very low in the Liaoning
Province, so a chlorofluorocarbon
heat pump cannot meet the heating
demand. Instead, Itomic CO2 heatpumps were introduced and they
are now operating well down to－20℃ ambient. With an anti-freeze
heaters built inside the units,
operation is well kept even when an
unexpectedly low temperature hits
the region.

7

VillasA second house（China）

バッファータンク
Buffertank

Th6
Th5

循環ポンプ pump
Circulation

Th4
Th3
Th2
Th1M

CO2ヒートポンプCO2Heat pumpHeating

電動三方弁Electric
3-way valve

Supply
給 水 water
8

Comfort Hotel Himeji (japan)

HotelPre-heating

HotelsComfort Hotel HimejiThis hotel chain holds approx.170,000
rooms around the world and 51 hotels
throughout Japan. They adopted Itomic
CO2 heat pump (12kW）as the guest
room’s hot water preheating in order to cut
the total energy cost. They are successful
in reducing the gas expenditure in thelimited installation space. Their two otherhotels also adopted our CO2 heat pumps.

9Comfort Hotel Himeji (japan)<Rough Drawing>

Supply water preheating

HP water heater

Circul.
waterWater
OutputTank

Circulation heating
HP
Existing water heater HP

Hotel

Gas water heaters 22 units

Pre-heating

Products

Units ：CO2 Heat pump(Independent unit)

Model： CHP-12H, SPU-1
Numbers：1 unit each10HotelComfort Hotel Himeji (japan)

Pre-heating

Cost calculation

Reduction effect■Outcomes（Surveyed for 13days）《Gas meter values》

DateTime

Indicator

Difference

Jan 30

12:40

102,916.41

ーFeb 6

12:20

103,509.25

592.84

Feb 13

12:00

104,262.24

1,345.83《Previous year’s value》

Feb, 2012

Outcome［m3］3,606Gas for 13days

1,616m3 (124.3m3/day)Gas amount for 13days 1,252m3 (96.3m3/day)● Electric cost of heat pump water heater（Actual value）
Consumed electricity：998kwh（Daytime：487kwh, Nighttime：511kwh）
Electricity cost：487kwh×￥15.85/kwh+511kwh×￥11.69/kwh＝￥13,693/(13days)● Reduction on gas cost by the adoption of heat pump (Actual value）（1,616m3 ー 1,252m3）× ￥104.44/m3 ＝ ￥38,016/(13days)● Cost saving by heat pump installation（Actual value）

Before：￥168,775 /13days
After：￥144,452/13days

Reduction：￥24,323/13days
Tot. initial cost: ￥2,800,000
Est. Annual reduction:￥682,915
Collection of investment

Approx.

4.1years￥13,693 ー ￥38,016 ＝ ▲￥24,323/(13days)

11

Chicken processing company (Taiwan)

Industry

Hybrid system

Industry use

Chickenprocessing
company
in Taiwan
Under the famous frozen
food brand, this company
processes 7million chickens
annually, and sells
domestically and exports to
the Southeast Asian
countries. A large amountof hot water is consumed
during the process, so ourCO2 heat pumps have been
adopted as a combination
usage with the existingboiler in order to reduce
the total energy cost.
12Chicken processing company (Taiwan)

Industry

Hybrid system

Products
Units： CO2 Heat pump water heater
Modes：CHP-80Y2
Numbers：1 unit

Tons of hot water is consumed in thisfacility as cleaning, washing, andsterilizing purpose during the chicken
processing. By the newly adopted
hybrid system (an originally set heavy
oil boiler is combined with a CO2 heatpump), hot water is supplied first by theCO2 heat pump. This way, the drastic
energy cost reduction has beenachieved. The facility management isalso easier due to the non-combustion
feature of the product.

13

Chicken processing company (Taiwan)

Industry

Hybrid system

CO2ヒートポンプ
CO2Heat pumpTh4Th6

Close type
Storage tank

Close type
Storage tank

Close type
Storage tank
Th５

Th2

Th3

Th1

循環ポンプ
Circulation pump

給 水Supply water

温水ボイラー
Hotwater boiler

14Chicken processing company (Taiwan)

Industry

Hybrid system

Comparison■ Actual measurement: Number of processed chickens and energy cost（June～July）

Reduction effectJune・July Comparison

Before: 399,616 yuan/mo.

※ CO2 Heat pump starts operation from July

700000600000573,816

597,414 605,943

After:

632,310

Reduction : 204,272 yuan/mo.

Annual reduction(calculation) :500000399,616

4000002,405,138 yuan/year

300000195,344

200000

Annual Running cost
Reduction rate
Approx10000032,127
0

195,344 yuan/mo.

34,896

Vacuumpacking
真空パック[羽](chickens)

17,840Slaughtering
屠殺[羽](chickens)

Total合計[羽]processed(chickens)

June

July

8,420

Fuel consumption
燃料消費量[L]/月
L/mo.

Energy Cost
燃料費[元]/月
yuan/mo.

51.1％
Reduction15

Beer factory (China)

Factory

TemperaturerisingFactory

Beer Factory(Budweiser)in Wuhan, China
This beer giant holds 14
factories in China, among which“Budweiser Wuhan International
Brewing Company” has thelargest production volume.
One 80Y2 model has been
adopted, aiming at energy cost
reduction on the production line
and improve-ment of the factory
environment.

16

Beer factory (China)
Products

TemperaturerisingFactory
Heatexchanger
熱交換器

CO2 Heat pump

30℃
90℃
90℃出湯
OutputModel：CHP-80Y2

Buffer tank

Numbers：1 unit
A large amount of hot
water is added to malts
during the saccharification process (Turningstarch into sugar.) The
supply water temperature
to the heat pump isstrictly controlled at
below 35℃ so the stableefficiency is constantly
kept.
At the same time, theheat pump works well in
reducing the summertime
indoor temperature,sometimes as high as
40℃, as it discharges cool
air during the operation.

20℃
80℃

Supply
給水20℃

water30℃
M
alt

Hop
Geratinization

grinding

Filtering

Filtering
Packagingboiling

Fermentation

aging

Sugar

Precipitation
filteringcooling17Cattle barn on ranch (japan)

Industry

CleaningIndustry
Cattle barn on ranch
武漢バドワイザーOne unit of CHP-12H wasinstalled in this standard cow
barn in northern Japan, where
the main energy source used tobe an oil boiler. The owner’s
feedback is high for energy
expenditure reduction, lowemission of CO2, and other cost
performance.

Products
Model：CHP-12H
Numbers：1 unit

18

Industry

Cattle barn on ranch (japan)

Cleaning

Dairy: cow barn

Vacuumpump

trap

Milk Claw

Vacuumtank

Flow of cleaning
Chilling unit

Milk receiver jar

Bulk cooler

HEXdrain

Eco-Cute

Flow of cleaning

19

Industry

Cattle barn on ranch (japan)
Dairy: cow barn
Place：Nakashibetsu, Hokkaido

Before/After comparison of annual cost

Eco-Cute installation：May, 2013
Previous energy source：Oil boiler
Present energy source：Oil＋Eco-Cute

Reduction effect

Unit:1000yen

Cost
reduction

No. of cows：190
Production volume：1,902ｔ(2015)

Cleaning

Before: 1,335,373yen/year

Oil cost 1,335
合Total計471

電気料金
Electricity

142

After: Oil：329,878yen/year
Electricity：141,993yen/yr

灯油料金
Oilcost 329

Reduction amount：
Before/After annual cost (comparison with oil & electricity fees )CHARGE::YEN::

863,502 yen /year
Annual running cost
reduction rate

BeforeAfterApprox.

64.0％
Reduction20

Kanwang LPC (Korea)

Industry plant
Kanwang LPC
武漢バドワイザー

Industry

Cleaning

1,300 pigs are processed in this plant, with the required hot water per pig for washing,carcass dressing, and etc. is approximately 350L. The old facility did not work well as atsome areas steam and water was mixed to supply hot water, eventually the running cost
hiked against the owners’ will. After an Eco-Cute was adopted, the hybrid system –asteam boiler with a CO2 heat pump - replaced the old one, well contributing to the total
cost reduction.

Products
Product：CO2 Heat pump water heater
Model ：CHP-80Y2
Numbers：2

21

American School (Japan)

SchoolPool water
HeatingSchool

American Schoolin Japan
This school provides a uni-fiedelementary-lower-upper secondary
school program, with the total of
1,700 students. It owns a 50m
heated swimming pool in thepremises, which became the major
cost issue as the pool water washeated and circulated by oil
boilers and the energy cost hiked
as the facility gained ages. Itomic
planned the total refurbish-ment
including the construc-tion andreplacement of the boilers withEco-Cutes. The proposal wasselected as the “Act on theImprovement of Energy
Consumption Perfor-mance ofBuildings” by the Ministry of Land,
Transport, Infrastructure, andTourism.

22

American School (Japan)

SchoolPool water
Pool water
HeatingHeatingProductsUnits : CO2 Heat pump water heater
Model：CHP-70H
Numbers：4 units

4 heat pumps on the roof, a circulation
tank on the ground floor, and a heatexchanger in the machine room on B1,
were all installed by Itomic.
A bypass was set with a 3-way valve
between the heat exchanger and thetank, reducing the mixture of the tankwater. Thus the performance of the heatpump was kept well, contributing to thetotal running cost reduction.
Years have passed since the adoption of
the CO2 heat pumps and the related
equipment, but the good reputation forthe high performance is still spoken.

23

SchoolAmerican School (Japan)

Disinfection
消毒装置
devicePool water
Heating

Filter
濾過器

ヘアキャッチャー
Hair catcher

CO2
Heat pump
CO2ヒートポンプ
バッファータンク
Buffer tank
熱交換器
Heat exchanger

Th6
Th5
Th4

Circulation
循環ポンプ

Th3pump

Th2

M

Th1

Electric 3-way valve

電動三方弁給水 water
Supply24Dalian Futures Center (China)

Office building

General
hot water

Office building

DalianFutures Centerin China
In order to contribute to pollution
control method, the steam supply
by boilers to the area of the Xinghai
market in the city of Dalian wasstopped. As a replace-ment, Itomic
CO2 heat pump was adopted, being
highly praised its cost performanceand low impact on the environment.
Installed on the 2nd floor of theoffice building, hot water is supplied
to the kitchen dish washers and theshowers for the employee sports
gym .

25

Dalian Futures Center (China)

Office building

Generalhot water

Products
Units : CO2 Heat pump water heater
Model：CHP-80Y2
Numbers：2 units
In this premises, ５m3 steam tank × 2
units are reused as hot water storage
tanks. 13m3 of hot water a day is
supposed to be consumed in 90℃ output
conversion. This is an amount which a unitof CHP-80Y2 capacity meets, but anotherunit was set as a back-up. Approximately
320,000 yuan as an annual energy cost
was spent t even in summertime, but now
the 70％ of it is planned to be reduced by
the installation of Eco-Cute.

。

26

Generalhot water

Office building

Dalian Futures Center (China)

CO2 Heat pump
70℃ Output
Th6Th9Th5Th4Th8Volumetric
Heat Exchanger

Th3Th2
Th1M

Circulation
pump
循環ポンプ

Supply
給 水waterM

×Central steam supply

Abolished27

Nightingale Apartment （Australia)

Apartment

Apartment

hot water
supply・heating

Products
Unit： CO2 Heat pump water heaterNightingale
Apartment

Model：CHP-15H
Numbers：2

The constant population
growth and cost increaseof houses in main cities ofAustralia are now creating
the need of affordable andecological multi-dwellingcomplexes.
2 units of Itomic CO2 heatpumps were adopted forthis notable Eco-apartment,
which is promoting
sustainability, affordability,
and contribution to thecommunity environment.

28

Nightingale Apartment （Australia)

Apartment

hot water
supply・heating

CO2
Heat pumps
CO2ヒートポンプ

Coil tank
コイルタンク2,000L

Circulation
循環ポンプ pump

Buffer tank
バッファータンク
800L

Supply
給水 water

29

Yarra’s Edge （Australia)

Apartment

General
hot water

Apartment

Yarra’s Edge
Having gained a reputation
as one of the city’s mostunique residential developments, Yarra’s Edge offers
175 apartments throughout
its 32 floors in Melbourne.
Despite rave reviews, thebuilding needed to improve
its energy efficiency andreliability of hot water
heating system. A hybridsystem was introduced,and Itomic CHP-15H wasinstalled with boilers, thus
reducing the overall energy
cost and enhancing thestability of water heatingsystem.

30

Yarra’s Edge （Australia)
Products

Apartment

General
hot water

Unit ： CO2 Heat pump water heater
Model：CHP-15H
Numbers：1

A hybrid system features condensing
boilers, Itomic Eco-Cute, and twin coilstorage tanks. The heat pump provides
hot water for peak morning use, andthe accompanying boilers recharge thetanks when needed during the day,ready for the evening, another peakload period. Eco-Cute takes advantageof the off-peak electricity tariff, together,
the inbuilt timers also shut the boiler off
during the night, allowing for great
economic and sustainable efficiency.

47.5％
削減

31

Apartment

Yarra’s Edge （Australia)

General
hot water

CO2
Heat pumps
CO2ヒートポンプ

循環ポンプpump
Circulation

Coiltank
コイルタンク1,000L

Coil tank
コイルタンク1,000L

Storagetank
貯湯タンク
2,000L

Open tank (Hot)Open tank (Hot)Hotwater boiler
温水ボイラー

Supply
給 水waterOpen tank (Hot)循環ポンプ
Circulation pump32

Brown Brothers Winery （Australia)

Industry

Industry

General
hot water

Brown Brothers Winery
This vineyard remains one of Australia’s leading wine
companies, with experience in crafting wine since 1885,
harvesting 18,000ton and produces more than 100 kinds ayear. A CO2 heat pump was adopted to heat water to thespecific variable temperatures required for producing theirvintage wines, resulting in the drastic energy cost reduction.

Products

Unit： CO2 Heat pump water heater
Model：CHP-80Y
Numbers：1

47.5％
削減

33

CO2 Heat pump water heaters

Installations

Sales of AllOver the World

4000 units

3435