#air filter

[covid-safer-hotties]

Reference preserved in our archive (Daily updates!)

TL;DR: Corsi-Rosenthal Boxes deliver quality air filtration at upwards of 30% higher air exchanges than comparable HEPA filters on the market. Build 'em for covid. Build em' for wildfire smoke. Build 'em for allergies. Build 'em to clean the air.

Abstract Filtration performance of do-it-yourself (DIY) box fan filters deployed across a university campus was assessed over an academic year. Four DIY air filters were constructed from box fans and air filters with a minimum efficiency reporting value (MERV) of 13 and deployed in four spaces (two laboratories that include sources of particles and two offices). They were operated 9 hours daily with a programmable timer and were continuously monitored with power meters. Particle concentrations in the spaces were continuously monitored with low-cost nephelometers. The particle size dependent clean air delivery rate (CADR) and single pass filtration efficiency for each box was measured in a laboratory before deployment and every 10 weeks, for a total of five measurements over 40 weeks. We find that these DIY box fan filters maintain robust performance over time, with each air filter maintaining at least 60% of its initial CADR at the end of the 40 week study even with daily operation in environments with modest particle concentrations. CADR values for particles of 1.0–3.0 μm optical diameter averaged 34% higher than CADR values for 0.35–1.0 μm particles, aligning with MERV 13 filter size-dependent filtration expectations. Reductions in CADR over time were attributed to a reduction in filtration efficiency, likely due to a loss of filter electrostatic charge over time. There was no strong indication that increased resistance due to particle accumulation on filters appreciably decreased flow rates over time for any of the fans. The long-term robustness of DIY box fan air filters demonstrates their validity as a cost-effective, high performance, alternative to portable high efficiency particulate air (HEPA) filters.

[sea-salted-wolverine]

It's summertime which means it's smoke season! Shits on fire out there. Combusting even.

Anyway, I live in a log cabin with no AC so I'm gonna have to build a redneck air purifier and roll with it. Because I know how this whole climate change thing is treating us I figured I would share because the trick that makes this thing work is having it ready to go before the air quality takes a dive.

Step one. Gather materials. Box fan, 4 (four) air filters, masking tape and a kitty to make sure you do it correctly. Get the fat masking tape and make your life that much easier. I got air filters on sale, so I got the nice ones but even the low grade versions are better than nothing

Step two. Assemble a vaguely boxlike shape. Air filters are directional and you want the fan blowing air into the box, so pay attention to the little arrows. (If you want that true redneck authenticity, put it together backwards first then take it apart and do it again like I did)

Step ? Remove cat from box.

Step 3. Slather box with tape. there does exist the theoretical limit of too much tape, but that is in the realm of mathematical thought experiments. You can't possibly use too much tape. Get the box taped to the fan and add some shrouded.

Tada! I now have a large unwieldy box that will clean the air just as soon as I figure out where to put it where the cats won't try to sit on it.

[urban-paradise]

Stoked to have the 3.0 finally!

[thoughtportal]

Public Health Emergency ends.

Ventilation in Buildings

https://www.cdc.gov/coronavirus/2019-ncov/community/ventilation.html

[laurellynnleake]

Just swapped out the filters on our 1st Corsi-Rosenthal cube, and what a difference! Dusty old filter above, minty fresh one below.

This particular filter box spent 10+ months on low inside our house, catching tons of wildfire smoke, PM2.5, and COVID-19 aerosols, as well as pollen, dust, and mold. Glad all that's on THERE and not in our lungs!

I highly recommend building your own CR box for your home, school, work, mutual aid meet ups, etc. All you need is 4 MERV-13 filters (sold at most hardware stores), a 20" box fan, scissors, cardboard, and duct tape.

It ends up costing about $75-100 - much cheaper and performs a lot better than a lot of fancy air purifiers. Building it with 2 people takes about an hour (mostly to measure and cut out the weird shroud thing), and swapping in new filters is much faster.

Check out the Clean Air Crew website to get started on your own! We protect each other! 💪😷✨

[hvacinspection]

The Importance of Timely Air Filter Replacements

Regular filter replacements are crucial for maintaining optimal performance and extending the lifespan of various household appliances. Whether it’s your HVAC system, water purifier, or car engine, changing filters at the recommended intervals can significantly impact efficiency and health.

Improved Air Quality

One of the primary benefits of regular filter replacements is improved air quality. Air filters, especially in HVAC systems, trap dust, pollen, and other airborne particles, preventing them from circulating throughout your home. Over time, these filters become clogged, reducing their effectiveness and allowing contaminants to bypass the filter. Regular replacement ensures that the air in your home remains clean and free from allergens, which is particularly beneficial for individuals with respiratory issues such as asthma or allergies.

Enhanced Appliance Efficiency

Appliances such as HVAC systems, refrigerators, and air purifiers rely on clean filters to operate efficiently. When filters are clogged, these appliances must work harder to push air or water through the system, leading to increased energy consumption and higher utility bills. By replacing filters regularly, you ensure that your appliances operate smoothly and efficiently, saving both energy and money in the long run.

Prolonged Appliance Lifespan

Neglecting filter replacements can lead to significant wear and tear on your appliances. For instance, a clogged air filter in your HVAC system can cause the unit to overheat, potentially leading to system failures and costly repairs. Similarly, dirty water filters can cause water purifiers to become inefficient, potentially leading to damage over time. Regular filter replacements help maintain the proper function of these appliances, thereby extending their operational lifespan and reducing the need for frequent repairs or replacements.

Cost Savings

While replacing filters involves a recurring cost, it is a cost-effective measure in the long term. Clean filters ensure that appliances run efficiently, leading to lower energy consumption and fewer repair needs. This preventative maintenance reduces the likelihood of major breakdowns, saving you money on expensive repairs and replacements. You can take the help of skilled technicians for timely replacement or maintenance of your air filter

Conclusion

In conclusion, the impact of regular filter replacements is profound. From enhancing air quality and appliance efficiency to prolonging the lifespan of your appliances and saving on energy costs, the benefits are clear. By adhering to recommended filter replacement schedules, you can ensure a healthier living environment and more efficient home operations.

[flock-talk]

Mad that I had to spend 300$ on a filter but hey my paranoid ass can check the air quality from my phone now so there’s that

[fabricdragondesigns]

so not only can it cut transmission of illness, it is GENERALLY beneficial

[sportsandlaughs]

[comfortspringstation]

How to Have a Nice Smelling Living Room Naturally

[affixjoy]

I am continuing to feel insane about life in a pandemic with a toddler. It’s hard and it sucks, and this winter has been particularly brutal for all of it.

I try to be very gentle when talking to my irl people about covid stuff, because they already think I’m overreacting to everything. So a lot of it is just casual mentions of things I do, bringing them masks, linking articles in the family chat…

It usually gets ignored but I figure I have to try, and maybe it will pay off one day.

Well today might be one of those payoff days. I think I finally convinced my pregnant sister to get a hepa filter for her classroom which will hopefully reduce risk to her, her unborn baby, and all her students. She’s already had it three times, once during this pregnancy, and I’m terrified for her and my future niece/nephew. Here’s hoping she follows through 🤞🤞

[blowery]

For those of us in the path of the smoke from the fires in Canada, a homemade CR box does a great job cleaning the air. Just make sure you get Filtrete 1900 filters that can handle and filter smoke and soot.

[air-filters]

Introduction to Refcon Engineering Works

Refcon Engineering Works boasts a rich legacy of delivering top-notch air filtration products and services. With years of experience and expertise, the company has earned a reputation for reliability, efficiency, and customer satisfaction.

Importance of Air Filters

Air filters play a pivotal role in removing airborne particles, contaminants, and pollutants from the air. They ensure cleaner and healthier indoor air quality, contributing to the well-being of occupants and the longevity of equipment.

Types of Air Filters Offered: Refcon Engineering Works offers a comprehensive range of air filters tailored to meet specific industry requirements. These include:

HEPA Filters: High-Efficiency Particulate Air (HEPA) filters are renowned for their exceptional filtration efficiency, capable of capturing even the smallest particles with high precision.

Pleated Filters: Pleated filters are designed to maximize surface area, allowing for increased particle capture and prolonged filter life.

Panel Filters: Panel filters are versatile filters suitable for various applications, offering reliable performance and ease of installation.

Manufacturing Process of Air Filters: Refcon Engineering Works employs advanced manufacturing processes to ensure the highest quality standards for its air filters. This includes meticulous material selection, precise fabrication techniques, and stringent quality control measures.

Applications of Air Filters: Air filters manufactured by Refcon Engineering Works find extensive applications across diverse industries, including:

HVAC Systems: Air filters are integral to HVAC systems, ensuring efficient air circulation and maintaining optimal indoor air quality.

Industrial Processes: In industrial settings, air filters play a crucial role in safeguarding equipment and processes from contamination, thereby enhancing productivity and product quality.

Automotive Sector: Air filters are essential components of automotive engines, preventing dust and debris from entering critical engine parts and ensuring smooth operation.

Benefits of Using Air Filters: The utilization of high-quality air filters offers several benefits, including:

Improved Air Quality: Air filters effectively remove pollutants and allergens from the air, leading to cleaner and healthier indoor environments.

Enhanced Equipment Performance: By preventing the accumulation of dust and debris, air filters help prolong the lifespan and improve the performance of HVAC systems and machinery.

Health Benefits: Clean indoor air, facilitated by efficient air filtration, promotes better respiratory health and reduces the risk of airborne illnesses.

Refcon Engineering Works’ Commitment to Quality

Refcon Engineering Works prioritizes quality in every aspect of its operations, from product design and manufacturing to customer service. The company adheres to stringent quality control measures to ensure the reliability and durability of its air filtration products.

Customer Satisfaction and Testimonials

Refcon Engineering Works takes pride in its commitment to customer satisfaction. Positive testimonials from satisfied clients attest to the company’s dedication to delivering superior products and exceptional service.

Sustainability Initiatives

As part of its corporate responsibility, Refcon Engineering Works is dedicated to implementing sustainable practices in its manufacturing processes, minimizing environmental impact, and promoting a greener future.

Global Reach and Presence

With a strong global presence, Refcon Engineering Works serves clients across various industries worldwide, providing tailored air filtration solutions to meet diverse needs and requirements.

After-Sales Support and Services

Refcon Engineering Works offers comprehensive after-sales support and services, including installation assistance, maintenance programs, and technical support, ensuring optimal performance and longevity of its air filtration systems.

Competitive Advantage

The company’s commitment to innovation, quality, and customer satisfaction gives it a competitive edge in the air filtration industry, making it a preferred choice for businesses seeking reliable filtration solutions.

Industry Recognition and Awards

Refcon Engineering Works has garnered recognition and accolades for its contributions to the air filtration industry, further solidifying its reputation as a market leader.

Conclusion

In conclusion, Refcon Engineering Works stands as a trusted name in the field of air filtration, offering high-quality products, innovative solutions, and unmatched customer service. With a focus on quality, reliability, and sustainability, the company continues to exceed customer expectations and set industry standards.

FAQs

1. Are air filters suitable for residential use? Yes, air filters are commonly used in residential HVAC systems to improve indoor air quality and protect equipment.

2. How often should air filters be replaced? The frequency of air filter replacement depends on various factors, including usage, environment, and the type of filter. It is recommended to follow manufacturer guidelines for optimal performance.

3. Can air filters help reduce allergies and asthma symptoms? Yes, high-quality air filters can effectively capture airborne allergens and pollutants, thus reducing allergy and asthma symptoms for occupants.

4. Do air filters contribute to energy savings? Yes, by maintaining clean air circulation and preventing equipment inefficiencies, air filters can contribute to energy savings and lower utility costs.

5. Are custom air filtration solutions available? Yes, Refcon Engineering Works offers customized air filtration solutions tailored to specific industry requirements and applications.

Contact us right away if you want to learn more about our wide range of Air Filter products. Call us at +91–9810388086 or send an email to refconeng@gmail.com, we are India’s largest Air Filter Manufacturers and Suppliers.

[productstoreview]

[mycochaos-oldacnt-plzfollownew]

MycoChaotiX Q&A

Q: “can you explain how you mist once you see your first pins? thanks!” A:  Greetings mycopal!Allow me to provide you with some additional information to fully address your question :) Pinning is a process that occurs throughout the entire colonized cake, where the mycelium's metabolic processes shift towards fruiting. This is why, if someone's cake develops significant side pins, you often only see pinning there, rather than flat-surface pins through the fruiting phase. It's important to ensure that the colonizing mycelium is not exposed to the same lighting conditions as during fruiting. I personally keep black tarp material on my shelves to prevent light from hitting the bottom of the clear totes. However, light serves as a secondary trigger for pinning, while increased fresh air exchange (FAE), a drop in temperature, and the presence of condensation droplets on the mycelial mat (which later dry up) are the primary triggers for pinning after colonization is complete. In my current setup using unmodified and modified 6qt shoebox tubs, I don't need to mist much. During colonization, I don't mist at all. The lid on the 6qt tubs, combined with the substrate's field capacity, provides enough moisture. You should notice notable condensation on all walls of the tubs throughout the entire process. The shoeboxes have built-in gaps in the lid-lock structure that allow for some passive FAE. These tubs were originally designed to allow air circulation for storing shoes (particularly for shoe collectors), but the passive FAE is sufficient to let excessive carbon dioxide escape while maintaining humidity around 90%. When I observe full colonization of the subsurface sides of the tub and at least 80% of the tub surface covered in surface mycelium, I transition to the fruiting stage. My process has become quite straightforward: I remove the lid from the colonized tub and place a new shoebox tub (which may or may not be modified) upside down on top of it. Before placing the new tub, I mist it lightly. Then, I move the tub to a lower shelf in my grow and research area. The top level shelves are not exposed to my grow lights and are slightly shaded; and has a slightly lower ambient temperature. I also have a timed HEPA filter running on the lowest setting, cycling on and off every 6 hours. Additionally, I use brand: mostthink LED plant lights on the fruiting shelves. This tub setup allows light to spread evenly over the substrate surface, through the new-tub into the colonized tub more effectively compared to fruiting with the lid on. If you choose to fruit with the lid on, you need to be mindful of the direction from which the light enters as the fruits can grow sideways. At this point, I still haven't misted the colonized substrate or the inner walls of the tub. The lips of the two shoebox tubs should align, but there can be a slight offset, which helps with passive FAE and allows intentional air-filtered flow for exchanging fresh air and removing carbon dioxide. After a few days, I usually start to observe budding primordia as the increased FAE and air exchange in the tub cause the condensation on the mycelial mat to dry up. Once you see primordia, it becomes easy to spot their development from that point onwards. At this stage, I closely monitor the humidity in the tub. If I notice a lack of present and collecting condensation droplets on the inner walls of both the colonized and "roof" tub, I may use a light misting hand-pump spray bottle. I personally use a 250mL hair stylist mister bottle with filtered (or boiled and cooled) water, to which I add 1 tsp of H202. However, I never spray the mycelium or the fruits directly. I MAY do a misted spray upwards, away from the colonized tub, and let it slowly sway and sink onto the substrate (but only if I havent begun to see primordia forming in that few day window I discussed above). I do this, primarily because of my belief/understanding that pins form on parts of the mycelial matte (generally rhizoid growth that have laid flat) and do so in spots where there was condensation pooled that dries from the FAE increasing :) Does this help? Follow up questions? :)Thanks for reading!

[flock-talk]

Naturally Newts air filter just decided to stop working today, yknow when he’s been having sneezing problems that’s exactly the perfect timing to stop working.

The one good thing is that the replacement was $125 off, it was still $300 but hey. I would have needed to get a new one for the size of the new bird room anyways.