Task Title: Development of 3RT High-Efficiency ... · PDF fileHigh-Efficiency Refrigerating...

Task Title: Development of 3RT High-Efficiency Refrigerating

System Using Solar Heat

Prepared by: General Manager: Choi, Go-woonFeb. 20, 2013

SAEWOON SYS-TECH www.esaewoon.com/

SAEWOON SYS-TECH General Manager Choi, Go woonFeb. 20, 2013

【 Contents 】

1. About the Company 6. Absorption Chiller

2. Needs 7. Summary of the Overall

C i li ti P3. Object of Technology

Commercialization Process

and Results

Development

4 Ab t th C i li ti

8. Achievements

9 C i li i P4. About the Commercialization

5. Major Results of

9. Commercialization Progress

and Future Plan j

Commercialization


1. About the Company

SAEWOON SYS-TECHSAEWOON SYS TECH

Foundation Dec. 1, 1992 LocationPalyong-dong, Changwon-si

No of

CEOKang, Sun-hui

No. of Employees

12

No. of Researchers

3

Main

-Main production areas: Glass Solar Evacuated Heat Collection Tube, Heat Pipe Solar Collector, Solar Heating System

Products g y

-Main research areas: High-Efficiency Solar Collector, Solar System Controller,Absorption Chiller

R&D

Development and performance evaluation of Heat Pipe

Solar Collector [2005)

Development of high-efficiency hot water & heating


p g y g

system with bafle-type thermal storage tank (2008)

Remote monitoring of solar collection system (2010)

Overseas Certification and Export Item

1. About the CompanyHistory

Dec. 1992 Established the company

Mar.1993 Renamed SAEWOON SYS-TECH

Sept. 1999Joined the industry-academe consortium in Gyeongsang National U i it (7th t d t b l )

History

Feb. 2008Selected as a general supply and solar thermal supply company by Korea Energy Management Corporation

Sept. 1999University (7th: evacuated tube solar energy)

Apr. 2002Successfully completed the Technology Innovation DevelopmentProject [Small and Medium Business Administration, developed evacuated tube using heat pipe for solar collector]

Oct. 2002 Concluded technology agreement with Choengha University, China

Mar. 2008 Registered the electrical construction business [Gyeongnam-01271]

Aug. 2009 Displayed products in France

Nov. 2009Built a cooperative system with LS Industrial Systems Co., Ltd. (solar light]

Selected as INNO-BIZ (technology innovation-oriented company)Dec. 2003 Won the top prize for IT

May 2004Made industry-academe-institute collaboration with Gyeongsang National University

Jun. 2004Selected as a company for the evacuated tube business by Korea Energy Management Corporation – Changwon Dongbowon

S f ll l d f l i f h l

Dec. 2009Selected as INNO-BIZ (technology innovation-oriented company) company (Small and Medium Business Administration)

Jun. 2010 Acquired ISO 14001 certification, ISO9001 certification

Aug. 2010Designated as a recommended product by Gyeongsangnamdo, acknowledged as a company-affiliated research and development center

Dec. 2004Successfully completed performance evaluation for the solar collector heat pipe (Ministry of Commerce, Industry, and Energy)

Mar. 2005 Registered as a venture company

Jan. 2006Acquired certification for the solar collector [Korea Energy Management Corporation] – U-shaped tube

[

Sept. 2010Acquired certification for solar collector (Korea Energy Management Corporation-SWH1800-16D,SWH1500-16D)

Oct. 2010Built monitoring system (Korea Industrial Complex Corporation)-remote monitoring

Nov. 2010Acquired certification for Europe’s Solar Keymark (SWH1800-16, SWU1800-16)

Feb. 2006Registered as a renewable energy company [Minister of Commerce, Industry, and Energy] – solar energy

Nov. 2006Successfully completed the Local Industry Common Technology Development project [developed the Heat Pipe-type collector)

Nov. 2006Acquired certification for the solar collector [Korea Energy Management Corporation] - HEAT PIPE type

SWU1800 16)

Jan. 2011Registered at the Public Procurement Service (SWH 1500-16, SWU1500/16, SWH1800-16D)

Apr. 2011Concluded the Small and Medium Business Export Support Agreement (Korea Renewable Energy Association)

Apr 2011Selected as a green export voluntary agreement company (Korea E i l I d & T h l I i )

Dec. 2006 Established joint branch with [SUNSHORE], China

Apr. 2007 Registered class 1 heating construction business

Jun. 2007Solar thermal installation in Seoul Metropolitan Office of Education (elementary, middle, and high schools] [5 places)

Apr. 2011Environmental Industry & Technology Institute)

Sept. 2011 Concluded MOU with Secom, Philippines – set up KOTRA branch

Apr. 2012Overseas market research – Ministry of Knowledge Economy(successfully completed)

Oct. 2012 Concluded MOU for solar energy (100 MW) with Porac, Philippines


Nov. 2007 Global quality technology company for evacuated tube solar collector

Dec. 2007Developed/Applied patent for OP-300 Solar Water System (One Pump System)

Jan. 2008Concluded Technology Transfer agreement [Gyeongsang National University + Technopark + Gyeongsang Provincial Office] –thermal storage system

gy , pp

Nov. 2012Feasibility report for overseas renewable energy project (FS)-(Korea Renewable Energy Association)

Dec. 2012 Registered collector at the Public Procurement Service (SWH 2 types)

※Overseas Expansion Support Agreement for the R bl E P j t


Ministry of Commerce, Industry, and Energy

①Solar Heat System

②Photovoltaic System②Photovoltaic System

③Wind Power Generation System

④Geothermal Cooling & Heating System

⑤Absorption Chiller



Solar Collectors with National Certification (4 types)National Certification (4 types)

ONE-PUMP SYSTEM (OP-300)(Patent Registration No. 10-0906199)Solar Collectors with

Overseas Certification (2 types)

SAEWOONSYS-TECHOverseas Certification (2 types) SYS TECH


Overseas Export – all-in-one (SWB)


National · Overseas Certification

O NOver

NatIr

sea

Ionaa

s al


2. Needs

Details

Solar systems have been mainly used for hot water supply & heating and large-scale cooling systems (10RT and more) in Korea, but smaller cooling systems (that can utilize the heat remaining at an existing solar system) (1RT~5RT) have yet to be developed and distributeddeveloped and distributed.

Can be developed as an export item for the Middle East and Southeast Asia where solar energy is abundant (make it a package item) (project development)(make it a package item), (project development)

With special portfolio targeting the wide distribution of new and renewable energy, try to veer away from the traditional solar hot water and heating system and create new needs (twin-glass evacuated solar collector tube)needs (twin glass evacuated solar collector tube).

Unlike the existing electric compressor-type chiller, uses environment-friendly solar energy, expected to capture a share of the existing chiller market.

Contribute to achieving the national greenhouse gas target and affect other industrial areas positively.

Helps implement the Climate Change Convention: By using natural energy for cooling,


Helps implement the Climate Change Convention By using natural energy for cooling, reduce the use of fossil fuel (to be used for power station) – save electricity cost.

3. Objective of Technology Development

(1) To develop high-efficiency, middle~high-temperature, bulb-type

◈ Final Goal

heat pipe solar collector

(2) To make a high-efficiency collector for high temperature and high

pressure

(3) To develop high-efficiency technology for solar-powered

absorption chiller

(4) To conduct performance evaluation for the combined item of solar p

collector and cooling system


3. Objective of Technology Development

◈ Development of 3RT small high-efficiency refrigerating system using solar heatp g y g g y g


4. About the Commercialization

◈ Details and Progress Status g

No. Details Progress

1Development of high-efficiency, middle~high-temperature,

100%1p g y, g p ,

bulb-type heat pipe100%

2 Development of high-efficiency technology 100%

3Performance test for heat pipe manifold collector for the solar heating system

100%

4Field test and performance test for heat collector for the solar cooling system

100%cooling system

5 Development of high-efficiency technology 100%

6 Optimization of solution and refrigerant’s cycle 100%6 Optimization of solution and refrigerant s cycle 100%

7 Design and fabrication of all-in-one casing for cooling tower 100%


8 Design and fabrication of small and light components 100%


◈ Main Performance SPEC

EvaluationItems

UnitImportance (100%)

OverseasTechnology

Level

NationalTechnology

Level Project Completion Target

Evaluation Method

Performance Level

Performance Level

Year to Date

After Closeof Project

KS R ISO9806-1

Collector efficiency

% 20 70/Germany 65 68 68 "efficiency

Collector loss factor

W/㎡℃

10 3.0/Germany 3.5 3.5 3.0 "

Solar dependency

rate % 10 50/Germany 35 35 40 "

Collector output

temperature℃ 10 85/Germany 70 70 80 "

temperature

Coolingcapacity

usRT 30 3 3 3 3

Coefficient of - 20 0 7/Japan 0 7 0 7 0 72 KS B 6271


performance20 0.7/Japan 0.7 0.7 0.72 KS B 6271


◈ Characteristics of Technology Development by system item to be developedgy p y y p

ItemsMain Features of Technology

Development Remarks

High-efficiency,middle~high-

temperature, bulb-type heat pipe

Design manifold sealing device suitable for bulb-type heat pipe with length of 1510mm and diameter of 7.94mm as well as 70W heat-transferring capacity, which is appropriate for the solar absorption chiller.

Prevent crack and water leak due to

temperature change.

Development of high-efficiency technology

Maximize heat exchange between bulb heat pipe and working liquid in manifolds and minimize pressure drop to reduce circulation power.

Minimize resistance during heat transfer and pressure drop.

Performance test forPerformance test for heat pipe manifold

collector for the solar cooling system

Performance test and analysis on heat pipe manifold collector suitable for the solar cooling system

Conduct performance test for the heat collector.

Field test andField test and performance test on the collection system

for solar cooling

Field test and performance evaluation especially on heat pipe manifold collector among other solar collection systems

Test evaluation forperformance improvement

Establishment and analysis of high-efficiency cycle for


Development of high-efficiency technology

Establishment and analysis of high efficiency cycle for absorption cooling systems and establishment of COP 0.72 optimal cycle through design improvement by factor and overall analysis.

Improve efficiency through structure

change.

5. Major Results of Commercialization

◈ Development of high-efficiency, middle~high temperature, bulb-type heat pipepipe

Design a manifold sealing device suitable for bulb-type heat pipe with length of 1510mm and

diameter of 7.94mm as well as 70W heat-transferring capacity, which is appropriate for the solar

absorption chiller.absorption chiller.

Prevention of crack and water leak due to temperature change between winder and summer

Design “ㄱ”- shaped manifold copula to resist thermal contraction and expansion to

prevent possible crack.



◈ Development of high-efficiency, middle~high-temperature, bulb-type heat pipepipe

(b) Making the collector manifold

(c) Finished collector


(a) Design Plan


◈ Development of high-efficiency, middle~high-temperature, bulb-type heat ipipe

Design for direct-contact manifold copula

Design and fabrication of direct manifolds based on the result of thermal flow analysis

Design and fabrication of forced-circulation heat pipe evacuated collection tube



◈ Development of high-efficiency, middle~high-temperature, bulb-type heat pipepipe

(a) Making the sealing tube copula (b) Insulating the manifolds of the collector

( ) M ki th ll t h d (d) F b i ti d i t ll ti f l ll t


(c) Making the collector header (d) Fabrication and installation of solar collector


High-efficiency technology for collector: liquid flow analysisHigh efficiency technology for collector: liquid flow analysis

Ambient temp. (oC) 20

Condition for liquid flow analysis

InflowTemp. (oC) 20

Flow rate on inlet (kg/s) 0.001, 0.002, 0.003, 0.004, 0.005

Temp. of heat pipe (oC) 60, 70, 80, 90, 100

Pressure on outlet Atmospheric pressure


p p

Contact resistance (m2․K/W) 0.001, 0.0015, 0.002, 0.0025, 0.003


High efficienc technolog for collector: liquid flo anal sisHigh-efficiency technology for collector: liquid flow analysis

(inlet flow rate: 0.003kg/s, temp. of heat pipe: 80oC, contact resistance: 0.002m2․K/W)

For the direct contact type, heat coming from the heat pipe was transferred to water with little

lloss.

The temperature on the Header part was not high since low-temperature water flowed in, but the

manifold temperature was almost the same as that on the heat pipe.


Meanwhile, for the indirect contact type, not enough heat coming from the heat pipe was

transferred to the water.


High-efficiency technology for collector: liquid flow analysis

(b) Temperature Gap between inlet and outlet according to the heat-collecting water volume (a) Collector Efficiency in complex system


according to the heat collecting water volume


◈ Development of high-efficiency technology p g y gy

Maximize heat exchange between bulb heat pipe and working liquid in manifolds and

minimize pressure drop to reduce circulation power.

Design to increase the exposed surface of the bulb-type heat pipe’s condensing part to

the working liquid through manifold installation so as to minimize heat transfer resistance

Design to minimize pressure drop by expanding the heating surface in manifolds andDesign to minimize pressure drop by expanding the heating surface in manifolds and

passage area



◈ Performance test for heat pipe manifold collector for the solar cooling system

Performance test and analysis on heat pipe manifold collector suitable for the solar cooling systemsystem

Evaluation Test for the thermal performance of collector according to the test standard. Collector performance test according to the evaluation guidance for heat pipe collectorP f d i i h h i i ll d h di iPerformance test and comparison with the existing collector under the same conditionTest for the water leak of collecting medium in the collectorSet the optimal condition for maximizing collection efficiency.



◈ Field and performance test for heat collector for the solar cooling system



◈ Field and performance test for heat collector for the solar cooling systemp g y

Field and performance test to evaluate the overall performance of heat pipe manifold

collector in the solar collection system

Test if the temperature of water for cooling stably reaches the targeted 80oC.

Test evaluation to improve stability, durability, and thermal performance of the collection

system



◈ Field and performance test for heat collector for the solar cooling system

Through a field test storage tank efficiency and collector efficiency data was acquired byThrough a field test, storage tank efficiency and collector efficiency data was acquired by

measuring the temperature on each part of the system; the temperature of hot water and heating

supply and heat loss coefficient of the collector were also obtained.

Solar dependency was calculated based on system temperature data by measuring the insolation

amount during the test period. It was also a test item for the previously set quantitative target

value.

(a) Efficiency of (b) Solar


(a) Efficiency of storage tank

(b) Solar dependency


◈ Field and performance test for heat collector for the solar cooling systemp g y



◈ Development of high-efficiency technology

Establishment and analysis of high-efficiency cycle for absorption cooling systems through

design and performance forecasting programs and establishment of COP 0.72 optimal cycledesign and performance forecasting programs and establishment of COP 0.72 optimal cycle

through design improvement by factor and overall analysis

▶ Improve solution regeneration efficiency with 2-tier regeneration design

(Utility Model No.200221381).

Change structure of regenerator shell

Review the change of shell structure to facilitate the separation of solution andReview the change of shell structure to facilitate the separation of solution and refrigerant in the regenerator.

Secure technology to maintain a consistent temperature gap between the discharged hot water and inside solution.

C ffi i t f P f (COP) i d b 2%


Coefficient of Performance (COP) improved by approx. 2%.3-WAY 5-WAY


◈ Development of high-efficiency technology p g y gy

(a) 3-WAY → 5-WAY (b) Manufacturing


process


◈ Optimization of solution and refrigerant cycle p g y

By analyzing the operation cycle according to the cooling load and environment condition, review on optimization of cycle and control technology to facilitate the operation of the cooling system even when the temperature of thermal source changes.

[ ][Fig. Small Absorption Chiller System Chart]



◈ Optimization of solution and refrigerant cyclep g y

A. Optimization of system

Optimize the evaporating, absorbing, regenerating, and condensing

tsystem.

90-85℃(middle temperature)

31-36.5℃(cooling water)

8-13℃(cold water)(middle temperature) (cooling water) (cold water)

[Evaporation b bi


absorbing section]


◈ Design and fabrication of regenerative heat hexchanger

Install regenerative heat exchanger to facilitate the separation of absorption liquid (Lidium) and

medium (water).

SAEWOON SYS-TECH www.esaewoon.com/Use Grundfos Pump, which is adjustable between 1~3 tiers.


◈ Optimization of solution and refrigerant cyclep g yB. Easy to control with single subsidiary thermal source

Make a small solar refrigerating system and simplify the system structure (LCD

display used)display used).

Easy to control with simplified system

[C t l P l]


[Control Panel]


◈ Optimization of solution and refrigerant cyclep g y

C. Build control program through the simplification of system structure.

Enhance durability and portability through simplified, packaged system.y p y g p , p g y

Make it easy to control by simplifying the small solar cooling system.

Easy to convert into small solar cooling system and simplify the control algorithm

(a) Simplification of


(a) Simplification of SYSTEM

(b) Control Chart


◈ System Connection Chart of small absorption chiller y p



◈ Design and fabrication of all-in-one casing for cooling tower - Optimal alignment of components and design of all-in-one casing for cooling towerOptimal alignment of components and design of all in one casing for cooling tower

- Development of control logic integrated with the absorption chiller without the additional

installation of cooling tower

- Design and fabrication of small cooling tower

- Development of optimization system for cooling tower fan and flow control



◈ Design and fabrication of small/light pump

- The existing solution pump and valve have limitations in their application to small

absorption chiller. Therefore, design them to be more optimal by making the inducer and

impeller smaller and analyzing the liquid flow. p y g q

- Design to make the control valve and vacuum valve of each component smaller and lighter



◈ Modularization Design to make smaller/lighter component

- Design for component modularization

Design circulation pump, pipe joint, and

various sensor installation parts andvarious sensor installation parts and

modularize components for better durability.

(a) Detecting Well (for (b) Sector Detector


(a) Detecting Well (for high temperature)

(b) Sector Detector (for well)

6. 3RT Absorption Chiller

◈ Design Drawing g g



◈ Design and fabricating process of 3RT Absorption Chiller



◈ Finished product of 3RT Absorption Chiller



◈ 3RT용 흡수식 냉동기 완제품


6. 3RT Absorption Chiller (Test Report)


6. 3RT Absorption Chiller (Test Report)


7. Summary of Overall Commercialization Process and ResultsProcess and Results

Development Details Progress ResultDevelopment Details Progress Result

• Development of highly efficient,middle~high-temperature, bulb-type heat pipe

Design bulb-type heat pipe sealing device. Achieved

• Development of high-efficiency technology

Expand the heating surface area and passage area and minimize pressure drop.

Achieved

• Performance test for collector Conduct performance test for the collector.Achieved

• Field and performance test for collection system

Test if temperature stably reaches 80 degrees and improve stability, durability, and thermal performance.

Achieved

• Development of miniaturization and Improve design by factor and analyze the• Development of miniaturization and high-efficiency technology

Improve design by factor and analyze the alignment of optimal cycle.

Achieved

• Optimization of solution and refrigerant cycle

Optimize cycle and control technology to facilitate the operation of the cooling system.

Achieved

• All-in-one casing design Design integrated casing for component. Achieved

• Design of smaller/lighter componentMake smaller/lighter control valve and vacuum valve.

Achieved


• Performance evaluation of absorption chiller

Refrigeration and Air-conditioning Assessment Achieved

8. Achievements (Technological and Economic Effect)Effect)

◈◈ Technological aspect

I r th i ti COP t 0 72 fr 0 7 d r th t h l t r t dImprove the existing COP to 0.72 from 0.7 and secure the technology to operate and

control the absorption chiller based on high-efficiency collector and heat exchanger

technology.

Expand the distribution of the solar cooling system by resolving the overheat issue on the

system during the summer season with little hot water and heating supply.

Expand renewable energy supply through the development of middle-temperature solar

system (Philippines, Sudan, Oceania).

Replace the heat recovery-type electric cooling system using gas exhaust, burning heat,

SAEWOON SYS-TECH www.esaewoon.com/waste heat from industrial facility, and Cogeneration System with renewable energy system.

8. Achievements (Technological and Economic Effect)Effect)

◈ Economic aspect

Contribute to saving energy by reducing primary energy consumption through effective

use of renewable energy.

Contribute to resolving environmental issues such as HFC refrigerant use control and

global warming by using water, an environment-friendly refrigerant, not Freon refrigerant,

which destroys the ozone layerwhich destroys the ozone layer.

Demand is expected to grow domestically and internationally since both energy and

environment issues can be addressed and more export destinations are expected including

the US, China, and Southeast Asia.

Cooling technology using solar heat is in line with the government project to build a million

green households as part of the green growth policy contributing to improving the nation’sgreen households as part of the green growth policy, contributing to improving the nation s

trade balance along with economic benefit for customers by reducing fossil fuel energy

consumption.


9. Commercialization Progress (as of the end of February 2013)2013)

◈ Patent Application

1. Solar Collector (Sept. 07, 2011) – patent completed ( p , ) p p

2. Patent application for solar cooling system in process (insert auto purge system

and expand surface area of heat exchanger)and expand surface area of heat exchanger)

3. Conduct analysis on patent application trend related to solar absorption chiller

(domestic and overseas)



◈◈ Entered overseas Market (Philippines)

Concluded

MOU & MOA

ith Pwith Porac,

Philippines



◈ Entered overseas market (Philippines) - MOA


9. Commercialization Progress (as of the end of February 2013)2013)◈ Entered overseas market (Philippines) - MOU



◈◈ Entered overseas market (Philippines)

EstablishedEstablished

Philippine

corporation



◈ Exhibit in the Philippines (Nov. 2012)


9. Commercialization Progress (as of the end of February 2013)

Participation in exhibit:

2013)

Participated in Wind Power Korea 2012 (Dec. 5~7, 2012, CECO, Changwon)


9. Commercialization Progress (as of the end of February 2013)2013)◈ Civil Network –Samdo, Philippines



◈ Feasibility Study for Overseas Project on Renewable Energy (F/S)




9. Commercialization Progress (as of end of January 2013)(◈ Export 2000SET to Sudan in process


9. Commercialization Progress (as of the end of February 2013))

◈ Overseas Civil Network (Australia) – Samdo, Philippines (in process)


Thank you.

SAEWOON SYS TECHSAEWOON SYS-TECH


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