Annex39Japan National Team Report

Annex39 Expert Meeting, 12 Nov 2013at Waseda Univ. Tokyo

Kiyoshi Saito Japan National team leader

Waseda Univ.

Japan National Team

Japan National Team Leader: Prof. Kiyoshi Saito, Waseda UniversityAnnex39 scheduled Working period ： Sep 2011 ～ Aug 2014

Members of Japan National TeamDr. Hisashi Miura, National Institute for Land and Infrastructure ManagementDr. Masato Miyata, Building Research InstituteProf. Masafumi Hirota, Mie UniversityDr. Katsumi Hashimoto, Central Research Institute of Electric Power IndustryDr. Yohei Kayukawa, National Institute of Advanced Industrial Science and TechnologyMr. Kenji Matsuda, The Japan Refrigeration and Air Conditioning Industry AssociationMr. Masahide Shima, The New Energy and Industrial Technology Development OrganizationMr. Takeshi Hikawa, Heat Pump & Thermal Storage Technology Center of Japan

Representatives from 8 corporations: Mitsubishi electric, Toshiba career, Panasonic, Daikin Industries, Kansai electric power company, Chubu electric power company, Mitsubishi heavy industries, Hitachi.

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• Oct 2011 　 Nurnberg

• Jan 2012 　 Chicago : National team activity reports

• Oct 2012 Nurnberg : Activity reports of TASK1, TASK2 （ Existing specification)

•May 2013 Brussels : Discussion of each countries activities

• Nov 2013 Tokyo

International Expert Meeting History3

National Team Meeting History

<1st board meeting on 6 Jun 2012> 1.Outline of ANNEX392.Discuss what Tasks to contribute to

<1st National team meeting on 3 Aug 2012>3.Outline of ANNEX394.Comparison Japan’s standards and Europe’s by Mr.

Sagawa, JRAIA5.What to do for finalizing Task 1 & Task 2 toward end

of Sep.

<2nd National team meeting on 24 Aug 2012> 6.Presentation about EN14825, ISO standards by Mr.

Kataoka, JRAIA.7.Status report of TASK1,2 country report

<3rd National team meeting on 20 Sep 2012>8.About contents of Task1, 29.Outline of Japan Air Conditioning and Refrigeration

Testing Laboratory (JATL) by Mr. Hirata, JATL10.What to contribute to Task3 &4

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National Team Meeting History

<4th National team meeting on 5 Dec 2012>1.Report from the Annex39 Expert meeting at

CHILLVENTA by Prof. Saito2.Presentation: Current building load pattern in Japan by

Dr. Miura, National Institute or Land and Infrastructure Management

3.Presentation: EU standards by Associate prof. Kametani, Tokyo university of marine science and technology

4.Presentation: How to analyze uncertainty by Dr. Kayukawa, National Institute of Advanced Industrial Science and Technology

5.Presentations from the JSRAE annual conference, new performance evaluation method of air- conditioner & water heater by Prof. Hirota & Dr. Fujinawa

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National Team Meeting History

<5th National team meeting on 6 Mar 2013>1.Presentation: Activity about the

ISO16358 （ standardization of testing method of air conditioner) by Mr. Kaibara, Panasonic

2.Presentation: Current & future technology of Air Conditioning and Refrigeration Testing facility by Mr. Ishibasi, Onishi Netsugaku

3.Presentation: LCEM tool and its simulation by Associate Prof. Yoon, Nagoya city university.

<6th National team meeting on 17 Jun 2013>4.Report from international expert meeting by Prof. Saito5.Presentation: Eco Cute standard; JIS C9220 by Mr.

Nishida, Daikin Industries6.Presentation: Performance simulation of air

conditioner by Prof. Saito7.What to contribute to Task3,4

<2nd Board meeting on 6 Jun 2013>8.Performance evaluation method of A/W heat pump for

heating9.What to contribute to Task3,4

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Performance test method for Eco Cute(JIS C9220)

• Test method includes influence of whole system factors such as storage tank unit thermal insulation performance , scheduling program effect and transient performance influence on the whole system performance.

• This test method is well considered effective one to carry out precise evaluation. But since domestic hot water demand is deeply affected by Japan’s unique life style, It would be difficult to extend this test method to other countries.

Performance test for Eco Cute(A/W heat pump water heater) is conducted under whole system setup combination of heat pump unit and storage tank unit . • Energy efficiency of heat pump unit is measured under 6 conditions in the table.• Hot water demand is determined by daily hot water use pattern –mode- at

average Japanese home use. Annual performance efficiency is determined by the value of total amount of heat used in a year divided by total amount of electricity usage.

summer

Spring &

Autumn

Winter Winter(Frost mode)

Normal Stand by High temp water supply

Outside temp (Dry/Wet)

25/21 16/12 7/6 7/6 7/6 2/1

Supply Water temperature

24 17 9 9 9 5

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Types of major heat pump for heating , domestic hot water supply, & multi purpose heat pump, multi heat source heat pump In Japan

NotesBesides air conditioning system and EcoCute, no standard exists in hybrid heat pump system in Japan. The increase of hybrid heat pump using RES would be possible near future.

Type of heat pump

Test method

Hitachi appliance

Supply domestic hot water & Floor heating

Annual performance efficiency is determined total amount of heat used in a year divided by total amount of electricity usage. The test method is based on JIS9220

Panasonic Supply domestic hot water & Floor heating

Heat pump performance is evaluated under below specific conditions determined by JRA4050outside temp16℃/ 12℃, Inlet water temp17℃ at middle seasonoutside temp25℃/ 21℃, Inlet water temp 24℃ at summer seasonoutside temp7℃/ 6℃, Inlet water temp 9℃ at winter season

Toshiba Hot water heating

Rated Performance value is evaluated at specific condition. Specific condition is below,Outside temperature:7℃,Supply hot water temperature:40℃, Flow rate:4L/min

Mitsubishi Electrics

Hot water heating

Rated Performance value is evaluated at specific condition. Specific condition is below,Outside temperature:7℃,Supply hot water temperature:40℃, Flow rate:4L/min

Daikin Floor heating Performance value is tested at Company’s original specific condition. Specific condition is below,Indoor temp20℃,outside temp7℃/ 6℃, supply hot water temp35℃, Inlet water temp30℃, Flow rate4.8L/min

Yazaki Heat pump with Solar thermal collector

Annual performance efficiency is determined by total amount of heat used in a year divided by total amount of electricity usage. Total amount of heat is calculated sum of heat produced by heat pump under the condition of JRA4050 and heat produced at solar thermal panel counting meteorology data.

Rinnai Heat pump with gas fired water heater

Only heat pump performance is evaluated. Specific conditions are below,Hot water supply temp is 45℃ in every season, outside temp16℃/ 12℃, Inlet water temp17℃ at middle seasonoutside temp25℃/ 21℃, Inlet water temp 24℃ at summer seasonoutside temp7℃/ 6℃, Inlet water temp 9℃ at winter season

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Trends in overseas 1SEAD: Super-efficient Equipment and Appliance Deployment Survey & evaluate of existing calculation methods for heat pump water heaters in US ,

EU, Canada, Australia, Korea and China for ISO standardization, led by KTL and ICA. Completed survey & evaluation of existing calculation methods for heat pump water

heaters in targeted countries/regions. Completed measurements using 3 testing facilities done by each method.

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Trends in overseas 2ASHRAE: Calculation methods for multi-function heat pumps

Method of testing for rating of multipurpose heat pumps for residential space conditioning and water heating has established in the U.S. This standard provides uniform calculation procedures , ambient & water temperatures and water draw schedule. This is standardized as ASHRAE206-2013

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I think we have to refer this method for unified SPF

Strategy for development of new SPF

Environment

Basic concept is as follows to unify heat pump evaluation method. • Separate simple heat pump unit and environment –boundary is shown in

figure• Develop method to evaluate simple heat pump unit. Evaluation method of

heat pump unit is referred to APF.• Evaluate whole heat pump system performance including additional

facilities in another way.

OUTPUTAnnual Energy consumption• Electricity• or Fossil fuel use• or CO2 emission

INPUTSink: Temp. , kind of Trans.Medi.Source : Temp. kind of Trans.Medi.Load patternOthers : Some heats

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Boundary

Concept of heat pump evaluation

Transport medium

Strategy for development of new SPF

• Objective heat pump unit : Air-conditioner, Heat pump water heater, some hybrid systems

• Select transportation medium : Air to air, Air to water, Water to water

15 20 25 30 35 40

負荷

℃外気温度

消費

電力

CO

P

中間能力

定格能力

abc

Pow

er

consu

mpti

on

CO

PLo

ad

Ambient temp.

Rated

Middle

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How to organize performance of heat pump?Organize performance as function of heat source temp., heat sink temp. and load pattern. Just now APF onlys consider ambient air temp. dependence.

How much data should we take?Since we can’t take too much data, we have to consider how much data should we take.

How to get annual performance?we can’t take every annual performance data. We have to consider how to estimate some performance whose actual data we can’t get.

Fig. Performance evaluation method of APF

Strategy for development of new SPF

10 11 12 13 14 15 160

200

400

600

800

1000

0

5

10

15

Time h

Irra

diat

ion

W/m

2

Irradiation Outside temperature

Out

side

tem

pera

ture

o C

Annual Load pattern Renewable energy conditionThis can be determined by climate and size & performance of element

Waste heat should be determined by user data

When followings are given, depending on driving condition or country, we can decide SPFLoad pattern, annual temp. change of heat source and sink, additional heat or power quantity-renewable energy, waste heat

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But anyway, we can decide the annual performance of heat pump just like,

2( , )

loadSPF

Power orCO emission or fossil energyconsumption

Strategy for development of new SPF

Simulation : We try to use both of physical model considered code and whole system calc. code.• Simulation that consider detailed physical model should be used to

estimate annual performance of heat pump unit.• Simulation that can calculate large scale system just like LCEM I introduced

you last time is used to evaluate whole heat pump system including renewable energy, Waste heat ….

Fig. Physical model considered simulation codeFig. Large scale system calculation code

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Strategy for development of new SPF

Validation• High precision data acquired from such as assessment center is needed

to validate heat pump unit.• Field test data is needed to evaluate whole annual performance including

renewable energy and waste heat.

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Fig. Data acquisition

Fig. Filed test data

TASKS UNTIL NEXT MEETING

Future Task•We will investigate evaluation method of hybrid systems•We try to suggest how to evaluate heat pump unit depending on heat source temp., sink temp and load pattern.• In this case, detailed simulation will be used.•We will evaluate whole system performance with simulation.•We investigate whether we can use data we have already gotten to evaluate not only heat pump unit but also whole system performance. It is difficult to get new data.

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