19. WS Effective use of thermal energy in industry_Hitachi_Fujii

VI CDTI-NEDO JOINT WORKSHOPAbsorption chillers for effective use of low temperature waste heat

Hitachi, Ltd.R&D Group

Center for Technology Innovation

Tatsuo FujiiSenior Researcher

Bilbao, 23rd June 2016This work was supported by TherMAT, Future Pioneering Projects of METI, Japan.

This work was supported by the New Energy and Industrial Technology Development Organization.

#WasteHeat The Effective use of termal energy in industry

01Organization / Company

Johnson Controls – Hitachi Air Conditioning Company Overview

Name Johnson Controls – Hitachi Air ConditioningFunded Date Oct 1st, 2015

Main Office 16-1, Kaigan 1-chome, Minato-ku, Tokyo 105-0022 Japan

Manufacturing footprints

24 Factories (Tochigi, Shimizu, Tsuchiura, Shanghai , Guangzhou, Suzhou, Qingdao, Taipei, Philippines, Malaysia, Thailand, India, Spain, Brazil and etc. )

Leadership team CEO: Franz Cerwinka, COO & President: Shinichi Iizuka

Business outlineDevelop and sales of refrigerating and air conditioning products, including variable refrigerant flow (VRF) technology, residential air conditioners, absorption and centrifugal chillers, screw chillers, compressors

Employees 14,000 employees as of Oct.1st (about 150 employees in Tsuchiura)URL http://www.jci-hitachi.com


02We are offering from residential use to large chillers used in DHC and industrial use.

Product Portfolio of Johnson Controls – Hitachi Air conditioning


03Large Tonnage Chillers Overview

Centrifugal ChillerCumulative Shipments 7,027 units(1930 to 2015.3)

200 – 2,000 RT (703 – 7,030 kW)

Variable speed type is available

Absorption ChillerCumulative Shipments 21,035 units(1965 to 2015.3)

30 – 5,000 RT (105 – 17,580 kW)

Heat source: Hot water, steam and fuel


04Products for Co-Generation Use

Absorption Chillers with Enhanced Auxiliary Waste HeatUsing both steam and hot water as heat source, thus suitable for gas engine co-generation

Hot water

Heat recovery generator

Heat recoveryheat exchangerSolution flow rate control

Two-stageevaporator-absorber

Optimized cooling water flow

Presented at;


05Absorption Heat Transformer for Alcohol Distillery

The brand-new absorption heat transformer has shell and plate heat exchangers adopted for solution heat recovery, and circular headers for high pressure hot water.

SpecificationAbsorber

Evaporator Generator

CondenserItem Attribution

2,475kW107°C / 112°C

Heat. capacity

Hot water *

Cooling water * 25°C/ 30.5°C

Heat source 78°C EtOH

Electricity 24kWEfficiency(COP) 0.45

* Inlet / outlet

Shell and Plate Solution HEXs Available Capacity: 150kW～6000kW


06Development of low temperature driven, low temperatureGenerating absorption chiller Output image;

Low-temperature driven absorption chiller

Commercial air conditioning

Low temperature use(Food industries, etc.)

Solar heat

Industrial waste heat

Breakthrough point;

[1] Novel cycleTwo-stage Generation / absorption [2] New refrigerant

Appropriate substance for low temperature

[3] New absorbentIdentify thermal properties for higher ambient temperature


07R&D in TherMAT Project – Absorption chillers

12°C

7°C

Chilled water

Cooling water

Hot water(Waste heat)

≤55°C

Evap. LowTemp.Abso.

LowPres.Gen.

Aux.Abso.

Aux.Gen.

Cond. HighPres.Gen.

Photograph of the prototype at HitachiSingle-Effect/Double-Lift Cycle Flow

A Prototype of Single-Effect/Double-Lift (SE/DL) absorption chiller has been tested. 7°C chilled water was obtained by driving with 60°C hot water in Double-Lift mode (capacity: 42kW)*

7°C chilled water was obtained by driving with 89°C hot water until it fell to 53°C (capacity: 106kW)** Experimental results


08Future Lineup to Activate Low Temperature Waste Heat

60°C waste heat will be available for generating chilled water for space cooling.

SE/DLAbsorption Chiller

Hot Water DrivenAbsorption Chiller

Temp.: 60° 90° 120° 150° 180~

Direct fired Absorption Chiller/Heater

Steam DrivenAbsorption Chiller


08’Low temperature generating absorption chiller

By mixing organic solvent with water refrigerant, freezing point became under zero °C.-3°C cold brine was obtained from the evaporator of the test cycle showed below.

Freezing point of new refrigerant(with existence of LiOH as corrosion inhibitor )

Experimental apparatus (test cycle) (Hachinohe Institute of Technology)

[℃]

XWater molar fraction

Free

zing

poi

nt

w/o InhibitorLiOH 0.05wt%LiOH 0.1wt%LiOH 0.3wt%LiOH 0.5wt%

0.8 0.9 1-16-14-12-10

-8-6-4-20

LiOH

Evaporator Absorber

Condenser Generator

Solution heat exchanger

Presented at;


09Ideas for a Japan Spain collaboration

Energy conservation in commercial fieldWe are sharing the issue of reducing energy consumption for space cooling.

Information exchange about energy conservation in space cooling for each countries

Discussing possibility of solar cooling with heat-driven cooling cycle

Discussing about what kind of air conditioning will be preferred in each countries

Energy conservation in industrial fieldInformation exchange about waste heat and cooling/refrigerating demand in industry

Discussing current method of waste heat recovery and how to improve it

Study in what kind of refrigerating devices are suitable in industrial field

THANK YOUどうも有難う御座います

ESKERRIK ASKOGRACIAS

Tatsuo Fujii

[email protected]

Hitachi. Ltd, R&D

For further information

This work was supported by TherMAT, Future Pioneering Projects of METI, Japan.This work was supported by the New Energy and Industrial Technology Development Organization.

19. WS Effective use of thermal energy in industry_Hitachi_Fujii

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