* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Thursday, July 3, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Neil Young Plays Rare Full-Band ‘Ambulance Blues’ With The Chrome Hearts – Yahoo

    Neil Young Stuns Fans with Rare Full-Band Performance of ‘Ambulance Blues’ Alongside The Chrome Hearts

    BTS Announce Their Big Return and Yes, They Already Have Some Major Plans in the Works – Yahoo

    BTS Announce Their Big Return and Yes, They Already Have Some Major Plans in the Works – Yahoo

    Nantucket Dance Festival opens July 8 – The Inquirer and Mirror

    Nantucket Dance Festival Launches with Thrilling Performances Beginning July 8

    A Secret Society, Ritualistic Killings, and a Century-Old Curse Netflix and YRF Entertainment’s ‘Mandala Murders’ Premieres July 25 – About Netflix

    A Secret Society, Ritualistic Killings, and a Century-Old Curse: Dive into the Chilling World of ‘Mandala Murders’ Premiering July 25

    Susquehanna Raises Penn Entertainment Inc. (PENN) Price Target. – Yahoo Finance

    Susquehanna Raises Price Target for Penn Entertainment Inc. (PENN)

    George Lopez is coming to Spokane – KXLY.com

    George Lopez is coming to Spokane – KXLY.com

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Inspira Technologies Secures Landmark $22.5M Deal: Major Revenue Breakthrough After FDA Clearance – Stock Titan

    Inspira Technologies Secures Landmark $22.5M Deal: Major Revenue Breakthrough After FDA Clearance – Stock Titan

    Meiwu Technology Company Limited and Shenzhen Zhinuo – GlobeNewswire

    Meiwu Technology Company Limited and Shenzhen Zhinuo – GlobeNewswire

    Owls inspire new revolutionary noise reduction technology – KTEN

    Owls inspire new revolutionary noise reduction technology – KTEN

    New center coming to Mizzou will focus on energy research and technology – Columbia Missourian

    Mizzou Launches Innovative New Center Dedicated to Energy Research and Technology

    Mirrors in space and underwater curtains: can technology buy us enough time to save the Arctic ice caps? – The Guardian

    Can Technology Like Space Mirrors and Underwater Curtains Buy Us Time to Save the Arctic Ice Caps?

    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Neil Young Plays Rare Full-Band ‘Ambulance Blues’ With The Chrome Hearts – Yahoo

    Neil Young Stuns Fans with Rare Full-Band Performance of ‘Ambulance Blues’ Alongside The Chrome Hearts

    BTS Announce Their Big Return and Yes, They Already Have Some Major Plans in the Works – Yahoo

    BTS Announce Their Big Return and Yes, They Already Have Some Major Plans in the Works – Yahoo

    Nantucket Dance Festival opens July 8 – The Inquirer and Mirror

    Nantucket Dance Festival Launches with Thrilling Performances Beginning July 8

    A Secret Society, Ritualistic Killings, and a Century-Old Curse Netflix and YRF Entertainment’s ‘Mandala Murders’ Premieres July 25 – About Netflix

    A Secret Society, Ritualistic Killings, and a Century-Old Curse: Dive into the Chilling World of ‘Mandala Murders’ Premiering July 25

    Susquehanna Raises Penn Entertainment Inc. (PENN) Price Target. – Yahoo Finance

    Susquehanna Raises Price Target for Penn Entertainment Inc. (PENN)

    George Lopez is coming to Spokane – KXLY.com

    George Lopez is coming to Spokane – KXLY.com

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Inspira Technologies Secures Landmark $22.5M Deal: Major Revenue Breakthrough After FDA Clearance – Stock Titan

    Inspira Technologies Secures Landmark $22.5M Deal: Major Revenue Breakthrough After FDA Clearance – Stock Titan

    Meiwu Technology Company Limited and Shenzhen Zhinuo – GlobeNewswire

    Meiwu Technology Company Limited and Shenzhen Zhinuo – GlobeNewswire

    Owls inspire new revolutionary noise reduction technology – KTEN

    Owls inspire new revolutionary noise reduction technology – KTEN

    New center coming to Mizzou will focus on energy research and technology – Columbia Missourian

    Mizzou Launches Innovative New Center Dedicated to Energy Research and Technology

    Mirrors in space and underwater curtains: can technology buy us enough time to save the Arctic ice caps? – The Guardian

    Can Technology Like Space Mirrors and Underwater Curtains Buy Us Time to Save the Arctic Ice Caps?

    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Naples restaurant owner prepares for hurricane season with new flood technology – Fox4Now.com

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home News

Photovoltaics for vapor compression refrigeration

May 6, 2024
in News
Photovoltaics for vapor compression refrigeration
Share on FacebookShare on Twitter

Scientists in China have developed a PV-driven direct-drive refrigeration system for electronic device cooling. The proposed system has so far provided low exergy levels, but its costs are much lower than those of conventional vapor compression refrigeration technologies.

May 6, 2024 Emiliano Bellini

Researchers at the Hebei University of Technology in China have designed a solar photovoltaic direct-drive refrigeration system with low energy consumption for high heat-flux electronic device cooling.

“The proposed system integrates photovoltaic power generation with direct-cooling and vapor compression refrigeration (VCR),” the research’s lead author, Xiaohui Yu, told pv magazine. “The combination of micro-evaporator and direct cooling method can achieve good heat exchange efficiency.”

The system consists of two subsystems: a PV unit including a battery and an maximum power point tracking (MPPT) controller; and a VCR unit comprising a DC rotary compressor, a fin air-cooled condenser, an electronic expansion valve, an embedded direct cooling evaporator, and a dry-filler.

In the proposed system configuration, the DC rotary compressor compresses the refrigerant into a high-temperature and high-pressure gas, which is then conveyed into the fin air-cooled condenser to release heat. “The refrigerant becomes the state of gas-liquid two-phase flow with low temperature and pressure through the electronic expansion valve and finally goes to the embedded direct cooling evaporator to absorb the heat of electronic devices,” the researchers explained.

The PV unit powers the DC compressor and the MPPT device is utilized to control the charging and discharging of batteries.

The scientists emphasized that the system’s heating power and compressor speed have a great influence on the exergy performance of the VCR subsystem, which they said is closely related to the solar radiation intensity. Exergy is the maximum amount of work that can be produced by a flow of energy as it comes to equilibrium with a reference environment.

The group tested the exergy and economic performance of the system under different operating conditions and found its coefficient of performance reached 8.5 when the heating power and compressor speed were 400 W and 4350 rpm, respectively.

“When the average solar radiation intensity is 776.5 W/m2, the photovoltaic cells of the presented system with operation of 7 h generate 1.81 kW h of electricity, where 24.9% of electricity is consumed on the VCR subsystem,” it added. “The rest is stored and can supply this subsystem to run continuously for 5.3 h without solar radiation.”

The academics described the exergy performance of the PV unit and the compressor as insufficient. “The PV cells have the largest exergy destruction of 1059.4 W, accounting for 91% of the total exergy destruction of the system. Exhibiting the second largest exergy destruction, the compressor reaches 86.3 W and accounts for 7.4% of the total exergy destruction,” they added, noting that increasing the compressor speed from 4350 to 6500 rpm results in a two-fold increase of the exergy destruction of the compressor itself.

Their economic analysis, however, showed that the system is 79.5% cheaper than conventional VCR systems, and that its payback time is around 2.2 years.

“Currently, the embedded direct cooling microchannel evaporator is being tested in our tested bench for long-term operation,” Yu said. “Our work can guide future development and application of this system. In addition, it can promote the development and application of the solar photovoltaic direct-driven vapor compression refrigeration system for heating, cooling and domestic hot water.”

The system was described in the paper “Energy, exergy, economic and environmental assessment of solar photovoltaic direct-drive refrigeration system for electronic device cooling,” which was recently published in Renewable Energy.

This content is protected by copyright and may not be reused. If you want to cooperate with us and would like to reuse some of our content, please contact: [email protected].

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : PV-Magazine – https://www.pv-magazine.com/2024/05/06/photovoltaics-for-vapor-compression-refrigeration/

Tags: newsPhotovoltaicsvapor
Previous Post

4 Technologies Making Construction Sites Safer

Next Post

Mauritius seeking consultants for 15 MW solar array

The Catholic Church believes in science. That good Christians must be anti-science is a myth. – National Catholic Reporter

How the Catholic Church Embraces Science: Debunking the Myth That Faith and Facts Clash

July 3, 2025
Making Europe a global leader in life sciences – European Commission

Unlocking Europe’s Potential: How to Become a Global Leader in Life Sciences

July 3, 2025
Solenn Heussaff is the cover star of a local lifestyle magazine – GMA Network

Solenn Heussaff is the cover star of a local lifestyle magazine – GMA Network

July 3, 2025
NWSL to take June break for ’26 men’s World Cup – ESPN

NWSL to Pause Season in June Ahead of 2026 Men’s World Cup Excitement

July 3, 2025
Russia’s economy just flashed warning signs about manufacturing and employment – Business Insider

Russia’s Economy Sends Alarming Signals in Manufacturing and Employment

July 3, 2025
Neil Young Plays Rare Full-Band ‘Ambulance Blues’ With The Chrome Hearts – Yahoo

Neil Young Stuns Fans with Rare Full-Band Performance of ‘Ambulance Blues’ Alongside The Chrome Hearts

July 3, 2025
Registered nurse explains reasoning for health care workers strike against WellSpan Health – WGAL

Registered nurse explains reasoning for health care workers strike against WellSpan Health – WGAL

July 3, 2025
Judge blocks Trump asylum ban at southern border, says he exceeded authority – NBC News

Judge blocks Trump asylum ban at southern border, says he exceeded authority – NBC News

July 3, 2025

Stellantis Revives SRT: High-Performance Street and Racing Division Makes a Triumphant Return

July 3, 2025
Josh Hart Delivers Promise to Fans After Knicks’ Recent Move – Yahoo Sports

Josh Hart Delivers Promise to Fans After Knicks’ Recent Move – Yahoo Sports

July 3, 2025

Categories

Archives

July 2025
MTWTFSS
 123456
78910111213
14151617181920
21222324252627
28293031 
« Jun    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (702)
  • Economy (729)
  • Entertainment (21,617)
  • General (15,689)
  • Health (9,768)
  • Lifestyle (733)
  • News (22,149)
  • People (729)
  • Politics (736)
  • Science (15,947)
  • Sports (21,226)
  • Technology (15,712)
  • World (709)

Recent News

The Catholic Church believes in science. That good Christians must be anti-science is a myth. – National Catholic Reporter

How the Catholic Church Embraces Science: Debunking the Myth That Faith and Facts Clash

July 3, 2025
Making Europe a global leader in life sciences – European Commission

Unlocking Europe’s Potential: How to Become a Global Leader in Life Sciences

July 3, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version