TECO Green Tech Contest2012 TECO Green Tech Contest 2012 Taipei Research on Refrigeration and...

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei

Research on Refrigeration and heating integrated solar photovoltaic

technology

Author: Han Rui (Reporter), Sun Fei, Jiang Chang-BaoAdvisor: Prof. Gao Jihui

School of Energy Science and EngineeringSchool of Energy Science and EngineeringHarbin Institute of TechnologyHarbin Institute of TechnologySchool of Energy Science and EngineeringSchool of Energy Science and EngineeringHarbin Institute of TechnologyHarbin Institute of Technology

Date: 2012. 08. 28Date: 2012. 08. 28Date: 2012. 08. 28Date: 2012. 08. 28

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei ContentsContents

Research background1

2

3

4

5

Invention ideas

System introduction

Experiment research

Characteristics & innovations

Page 5-8

Page 3-4

Page 9-10

Page 11-13

Page 14

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei Ⅰ Ⅰ ResearchResearch backgroundbackground

fossil energy

Fossil energy pollute the environmental seriously; the reserves is reduced and the price is higher and higher ;Many wars were triggered because of the fossil energy.

Traditional energy problems

Solar energy has great potential

Solar energy belongs to low density energy, comprehensive utilization is a promising direction.

wind energy

The subprime energy of solar energy

biomass energy

The solar energy cured by plants

wave energy

fossil energy

Solar energy cured in ancient times

The subprime energy of solar energy

Page 3

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei ⅠⅠ ResearchResearch background background

Page 4

Air-conditioning consume power greatly and pollute the environment

Air-conditioning sales volume distribution Power shortage region distribution

From the picture we can see that the more the air conditioning is, the more serious the power shortage is. Statistics shows that heating, cooling and hot water supply together account for more than 70% of the household energy consumption.

The vast majority air conditioning use

refrigerants such as Freon, The wide

use of refrigerant have serious

negative effect on the ecological

environment; the conventional air

conditioning usually need pump, it

also will produce noise pollution.

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei Ⅱ Ⅱ Invention ideasInvention ideas

Solar building give us inspiration

radiation refrigeration

Passive ventilation

system

fermentation system

photovoltaic system

solar energy collection

The solar building reduces

the construction cost and

improves environmental

and economic benefits.

The solar building reduces

the construction cost and

improves environmental

and economic benefits.

The British low carbon hall of 2010 Shanghai world expo

We hope to find a kind of

material, on the radiation of

sunshine, the material generates

the effect of refrigeration. But it is

too difficult, the idea was not

fulfilled. So we think ,if we could

add some intermediate steps to

achieve our purpose?

We hope to find a kind of

material, on the radiation of

sunshine, the material generates

the effect of refrigeration. But it is

too difficult, the idea was not

fulfilled. So we think ,if we could

add some intermediate steps to

achieve our purpose?Solar energy Some material Heat transfer Page 5


No noise

No liquid,gas medium

Without space limitation

Adjustment convenient

Role fastly, long service life

Mode conversion easily

Semiconductor refrigeration has significant advantages, it is

the ideal refrigeration way.Semiconductor refrigeration has significant advantages, it is

the ideal refrigeration way.

To the end of 21st century, the solar

power will account for more than

60% of the total power, photovoltaic

power generation has the broad

development prospect.

To the end of 21st century, the solar

power will account for more than

60% of the total power, photovoltaic

power generation has the broad

development prospect.

Solar energy Electric energy Heat transfer

Photovoltaic Semiconductor refrigeration

Solar-energy semiconductor

refrigeration matches to the

season well, namely if the

weather is hot, the sun

radiation is better and the

refrigerating capacity is great.

The use of solar semiconductor refrigeration technology

Page 6


The put forward of "cooling water heated gradient technology”



Solar cell and semiconductor refrigeration will produce a lot of heat when they are working, one

side the heat will influence the performance of equipment, on the other hand the heat will lost to

the environment and cause energy waste.



High quality hot waterSolar

collector

On the one hand improve the work performance of photovoltaic cell and semiconductor

thermopile , on the other hand absorb quantity of heat, acquire the high quality of hot water.

Solar energy

Page 7

cooling water heated gradient technology

Heat conduction make use of temperature difference

heat convection

aquifer

Heat radiation don't need power supporting and temperature difference

Page 8


The key principle to our project ---- three kinds of heat transfer

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei Ⅲ Ⅲ System introductionSystem introduction

System diagram

System diagram the effect diagram

Page 9

water cycle route in summer water cycle route in winter

Page 10

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei Ⅲ Ⅲ System introductionSystem introduction

Water cycle diagram

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei Ⅳ Ⅳ Experiment research Experiment research

Page 11

In order to verify the feasibility of the key technology which we proposed and obtain relevant technical parameters, we carried out theoretical calculation and experiment research.

Experiment system

Semiconductor cooling experiment system Experiment debugging


Page 12

Study on semiconductor refrigeration properties

The influence of input current on refrigeration effect

The heat of hot side conducts to cold side through semiconductor thermopile which makes refrigerating capacity and COP decline;

It can be concluded that the best input current of semiconductor thermopile is 2.8 A , corresponding input power is 30 W.

Ⅳ Ⅳ Experiment research Experiment research


Study on semiconductor refrigeration properties-continue

The influence of hot side cooling mode on refrigeration effect

Through the comparison of the two kinds of cooling modes, water cooling effect is much better than air cooling effect .

0 20 40 60 80 100 120 140 160

45

50

55

60

65

70

75

被冷

却水

温度

（o C

）

时间 min（）

制冷片开启制冷片关闭

输入电压：14.8V

0 20 40 60 80 100 120 140 160

45

50

55

60

65

70

75

被冷

却水

温度

（o C

）

时间 min（）

30度水冷关闭制冷片 15度水冷

输入电压： 14.8V

0 20 40 60 80 100 120 140 160

45

50

55

60

65

70

75

被冷

却水

温度

（o C

）

时间 min（）

30度水冷 15度水冷风冷

输入电压： 14.8V

The lower the cooling water temperature is, the better cooling effect is, the greater refrigerating capacity of semiconductor thermopile is.

The influence of cooling water temperature on refrigeration effect

Ⅳ Ⅳ Experiment research Experiment research

Page 13

TECO Green Tech ContestTECO Green Tech Contest 20122012 Taipei Ⅴ Ⅴ Characteristics & innovations

Page 14

The project integrate photovoltaic generation, semiconductor refrigeration, solar energy collector based on the buildings. It realizes the comprehensive utilization of solar energy.

1

Achieve two major technology targets: reducing the temperature difference of hot side and cold side to improve the efficiency of refrigeration (COP) and reducing the photovoltaic cells working temperature to improve the power efficiency of photovoltaic cells . And put forward the scheme of using groundwater to store heat and cool, which can realize the heat stored underground.

2

The project is the first to propose “cooling water heated gradient technology”, which cooling water is heated from 15℃to 30 ℃ through semiconductor air conditioning , and then transports into the photovoltaic cells working surface heated to 50℃, and finally transport into solar collector heated to 70 ℃ or higher, so it can provide high quality hot water.

3

Patent acceptance notice

Page 15


Honor certificates


THANK YOU FOR YOUR KIND ATTENTION！

TECO Green Tech Contest2012 TECO Green Tech Contest 2012 Taipei Research on Refrigeration and...

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