Articles tagged with "sustainable-cooling"
Slash Energy Consumption Costs with Exhale Fans - CleanTechnica
The article from CleanTechnica highlights an innovative energy-efficient HVAC solution developed by Exhale Fans, led by CEO and Founder Richard Halsall. Exhale Fans has created a bladeless ceiling fan that uses a unique vortex effect to draw air from below and circulate it evenly in a 360-degree pattern throughout indoor spaces. Unlike traditional ceiling fans that push air straight down, this design provides a smooth, whisper-quiet breeze that reaches every corner of a room, enhancing comfort while reducing energy consumption. This technology is applicable across various environments including offices, hotels, airports, data centers, restaurants, schools, and homes, aiming to support year-round comfort with a modern, discreet aesthetic. The article also references a detailed discussion on CleanTech Talk, where Halsall elaborates on the fan’s design and benefits. Overall, Exhale Fans represents a promising advancement in HVAC efficiency, offering a quieter, more energy-saving alternative to conventional ceiling fans.
energyenergy-efficiencyHVACbladeless-fanclean-technologysustainable-coolingindoor-air-circulationUnderground Heat, Urban Cool: The Physics & Promise of Geothermal Cooling - CleanTechnica
The article discusses the innovative geothermal cooling project, G2COOL, in Masdar City, Abu Dhabi, which addresses the extreme energy demands of air conditioning in the Persian Gulf region. Air conditioning consumes up to 70% of the UAE’s electricity, making efficient cooling solutions critical. Unlike conventional geothermal power plants that generate electricity, G2COOL uses moderate-temperature geothermal water (80° to 100°C) from an underground aquifer directly to produce chilled water for district cooling through an absorption chiller system. This system leverages the absorption cooling cycle, where heat from geothermal water drives a lithium bromide-water solution to produce chilled water, which then cools buildings. Currently, G2COOL supplies about 10% of Masdar City’s cooling needs. The absorption cooling cycle involves heating a lithium bromide solution to release water vapor, which condenses and evaporates at low pressure to absorb heat from building cooling loops, effectively producing chilled water. Although the system’s coefficient of performance (
energygeothermal-energydistrict-coolingabsorption-chillerrenewable-energyMasdar-Citysustainable-cooling‘People Are So Proud of This’: How River and Lake Water Is Cooling Buildings
The article highlights the innovative use of river and lake water to cool buildings, focusing on Paris’s extensive district cooling network that draws on the River Seine. This system is crucial for maintaining optimal temperature and humidity levels in landmarks like the Louvre, which requires significant cooling capacity to preserve priceless artworks. Water-based cooling is highly efficient due to water’s density and avoids exacerbating the urban heat island effect, unlike traditional air conditioning. Paris’s network currently serves around 800 buildings over 100 kilometers of pipes, with plans to expand to 3,000 buildings and 245 kilometers by 2042. Similar systems are emerging in cities like Toronto and Rotterdam, where river water is used to cool various public and private buildings. However, the article also discusses challenges posed by climate change. Rising temperatures increase cooling demand while simultaneously warming water sources, reducing their effectiveness for cooling. This paradox threatens the long-term viability of water-based district cooling systems. Despite these concerns, demand for such sustainable cooling solutions is growing, driven by
energydistrict-coolingclimate-changesustainable-coolingurban-heat-islandwater-based-coolingrenewable-energyOld Ideas Lead To New Thinking About Comfort In Homes & Buildings - CleanTechnica
The article from CleanTechnica highlights how traditional, passive cooling techniques are being rediscovered and adapted to improve comfort in homes and buildings amid rising summer temperatures. It draws on historical practices, such as those used in Spain and Persia, where thick stone walls, awnings, and qanat systems—ancient underground water channels that cool air flowing through buildings—help maintain indoor comfort without relying on modern air conditioning. For example, in Seville, these methods keep indoor temperatures significantly lower than the outdoor heat, and similar principles are applied in hospitals using updated cooling technologies. Additionally, the article notes cultural adaptations like the revival of the siesta in Spain and government regulations mandating heat-related work breaks, emphasizing the need for humans to adapt to climate change rather than expecting the environment to adjust. It also references expert Lloyd Alter’s discussion on the importance of mean radiative temperature—the average temperature of surrounding surfaces radiating heat—as a critical factor in thermal comfort. Alter advocates for revisiting ancestral methods that effectively manage
energypassive-solar-designsustainable-coolingbuilding-materialsthermal-managementenergy-efficiencytraditional-architecturePhòng thí nghiệm Anh tạo ra chất làm lạnh mới trong điều hòa
energymaterialscooling-technologybarocaloric-materialsgreenhouse-gas-reductionenergy-efficiencysustainable-cooling