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qingzinano · 7 years

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Temperature Humidity Controllable Electrospinning Machine QZNT-E0402

Humidity Influence to Electrospinning

Since electrospinning technology sprung up in the 90s of last century, the control of the humidity of the spinning environment is a difficult problem which always troubled extensive science researchers to in-depth study about the electrospinning technology. Therefore, the further development of the electrospinning technology is limited. The major influence of environment humidity to spinning is below:

Influencing the spinning quality:

Ø The uniformity of the fiber diameter;

Ø The pore forming parameters of porous fiber;

Ø The smoothness of the fiber;

Ø Too high humidity will influence the uniformity of the membrane.

Influencing the spinnability of the spinning solution:

The spinning process of the organic solution is too influenced by the environment humidity. The value of the humidity will influence the change of the air dielectric constant and the magnitude of the electric field. Therefore, it will too influence the spinnability of the solution.

Influencing the blocking of the nozzle:

Environment humidity will influence the solution volatilization speed directly in the spinning process. Therefore, unsuitable humidity will influence the blocking of the nozzle.

Influencing the mechanical property of the fiber.

Dehumidifying ways

To control the humidity of the spinning environment, science researchers mainly use below three ways for dehumidifying:

Heated dehumidifying:

The ability of dehumidifying is limited, slow response time, the substantive change of the moisture content is not significant.

Adsorption dehumidifying:

The ability of dehumidifying is limited, slow response time, poor controllability .

Aerating to pre dehumidification:

Capable of dehumidifying rapidly, the requirement of the equipment design is high.

Lepton’s electrospinning machine humidity control plan:

Feeling the helplessness of the science researchers about the environment humidity influencing the research, in line with the concept of solving the difficult problem of science equipment humidity control for the science researchers, Lepton’s research and development team devoted significant resources and solved this difficult problem which always troubled the science researchers to do further science research, as well as successfully realized rapidly, high precision control of the electrospinning equipment environment humidity.

Lepton’s equipment adopted the technology plan which aerated to pre dehumidification, optimal designed the equipment’s structure, optimized the air inlet runner’s structure, let the pre dehumidification air can equably spread in the spinning cabinet when it entering and won’t have turbulent flow or other problems. Lepton adopted the high precision, fast response sensor as the humidity detecting sensor, insured the measurement’s timeliness. Meanwhile, raised the control algorithm’s response speed and precision, realized precision control of the inletting and exhausting air volume. Insured the high quality humidity control, at the same time, insured the safety of spinning environment in the cabinet, avoided having accidents which resulting from the too thick organic solvent, such as fire, explosion etc.

Through the testing by Foshan Quality Measurement Supervision and Testing Center, the technical parameters of the humidity control of Lepton’s electrospinning machine reached below level:

Testing Item

Unit

Technical Requirements

Testing Results

Item Conclusion

Humidity Control

Set the humidity control system （20~environment humidity）%±3%

（20~environment humidity）%±3%

Qualified

Humidity Control Speed

min

Humidity declined from indoor humidity to 45%, humidity declined time <1min

Qualified

Humidity declined from indoor humidity to 35%, humidity declined time <2min

Qualified

Humidity declined from indoor humidity to 20%, humidity declined time <3min

Qualified

The influence of the spinning by the spinning environment temperature:

Solvent’s volatilization speed; the higher the spinning environment temperature, the faster the volatilization of the jet solvent, the better the fiber’s shape.

The environment control plan of Lepton’s electrospinning machine:

Lepton’s team adopted the high precision temperature sensor to detect the environment temperature. It’s capable of detecting any temperature between -40℃ and 80℃. The precision is ±0.5℃, response time is less than 5s. Meanwhile, the heating system adopted the infrared radiation heating system, the power reached 1000W. It’s capable of raising the environment temperature rapidly.

Below is the stander configuration parameters of QZNT-E0402

No.

Item

Parameters

High Voltage Power Supply

Output voltage DC0-50KV, electric current<1mA, load regulation≤0.5％, input voltage AC220±10％

Solution Supply System

Injection pump: 1 set 1. Solution supply speed range: automatic speed ml/h（0.01ml/h~30.00ml/h）, manual speed ml/min （0.1ml/min-30ml/min）; 2. Install-able syringe size: 10、20、30ml; 3. Solution Pipe: external diameter 3mm* internal diameter 1.5mm, materials: PTEF, connector: metal Luer taper.

Jetting System

1. Single needle nozzle 18-25G, 2 sets each; 2. Four needle array nozzle: equipped 21G needle, 8 pcs.

Collection System

1. Roller: effective length 200mm, diameter ø80mm, roughness of the roller surface: 3.2μm; roller rotating speed: 0-350r/min, adjustable; 2. Panel collection device: 200mm*300mm.

Nozzle Slider Guild Rail

Effective size: length less or equal to 500mm, effective stroke 200mm, orientation precision≤0.05mm

Environment Control

1. Temperature control: indoor temperature -70℃, adjustable, precision ±1℃; 2. Humidity detection display: precision: humidity±3％RH; 3. Exhaust: power 2.4W, capable of setting the exhaust duration and timing exhuast.

Control System

7 inches human machine interface; A. NC function 1. Nozzle movement system: Mainly included manual speed setting, automatic reciprocating motion speed and stroke setting and relative control button. Capable of setting motion parameters by the users, realized the control function more humanized and visual, provided visual and more flexible operability for fiber quality research.

2. Roller collection device rotate speed control: Different rotate speed of roller collection will influence the fiber shape. Therefore, visual control the roller motion parameters is important for the fiber shape control. This system is capable of not only setting the roller rotate speed, but also setting the roller motion orientation.

3. Solution supply system Solution supply system is mainly used for solution delivery. The control system mainly controlled the injection pump parameters such as start-stop, fast forward, fast reverse, reset, supply speed etc. B. Timing function For many science researchers, experiment time is a very important problem. But the spinning process is relatively long. It��s impossible to watch the time at any moment. Therefore, the timing function will provide great convenience for the science researchers. When the time reach the setting time, 5s later, all execution device will stop, included slider, roller, heater, high voltage power supply. C. Automatic recording, saving parameters This function is mainly used for recording, saving the parameters. It’s convenient for the users to check the history parameters and compare the experiment results.

D. Safety protection function

In the process of spinning, the volatilization of the organic solvent will influence the safety of the equipment usage, such as fire, explosion, leakage which resulted from the too high concentration of organic solvent in the cabinet. After the experiment, too high concentration of residual organic waste gas in the cabinet will influence the health of the science researchers.

The intake and exhaust control function is capable of setting intake and exhaust parameters as well as the exhaust duration after spinning by the users, effectively protected the safety in the process of using the equipment.

Safety Protection System

1. Discharge short circuit protection, so all the device shells connected to the ground to avoid high voltage discharge which will cause damage; 2. Run led: in the process of the equipment’s running, the run led displays the equipment’s running status; 3. Safe logos: all the high voltage connected parts, ground wire, heater and other parts which can be easily touched by the operators have warning logos, in case of misoperation causing any safety problems; 4. Exhaust system: the exhaust fan exhausts the residual solvent in the cabinet, in case of fire, explosion, leakage or other accidents;

Antistatic system: the machine shell connected to the ground, in case of the operator gets an electric shock. 5. Security lock: lock the door when the equipment is running, in case of irrelevant personnel’s misoperation causing the experiment failing or accident; 6. Electric leakage protection: avoid electric leakage causing safety accident; 7. Inert gases intake function.

Equipment Appearance

Three windows: lacquered metal plate shell; blue and grey color; LED lamp illumination. Both side windows can be open independently.

Size: 850*800*1100mm

Optional High Precision Humidity Control Parts

Response time：3min，precision: ±3%

Optional Normal Humidity Control Parts

Response time：20min，precision: ±5%

QZNTE0402 Optional Parts

Parts

Parameters

Grid Collector+Pannel Collector

Size: 200mm*300mm

Continuous Winding Parts

Realized roll-to-roll winding collecting nanofiber, breadth: 250mm, winding substrate diameter: 100mm

Normal Microcamera

20 FPS

High Speed Microcamera

100 FPS

4 Needle Single Solution Nozzle

Capable of manufacturing nanofiber membrane rapidly, the efficiency is 4 times above than the single needle nozzle.

Dual Injection Pump

Equipped for jetting two solutions at the same time, such as manufacturing hollow fiber, bi-material composite fiber, double needle side by side nozzle’s solution supply.

Triple Injection Pump

Manufacturing core-shell structure fiber needs to use three solutions for spinning.

4 Needle Double Channel Nozzle+Dual Injection Pump

Jetting two materials at the same time, manufacturing composite nanofiber.

8 Needle Single Channel Nozzle ( Alufer)

Capable of manufacturing nanofiber membrane rapidly, the efficiency is 8 times above than the single needle nozzle, only needs 40min to manufacture a 150*200mm size membrane.

Parallel Electrode Collector

Capable of collecting oriented fiber.

Double-deck Coaxial Nozzle

For manufacturing hollow fiber.

Triple-deck Coaxial Nozzle

For manufacturing core-shell structure fiber.

High Voltage Power Supply （30kv）

Double High Voltage （±30kv）

High Voltage Power Supply （50kv）

Double High Voltage （±50kv）

Double High Voltage （30,50kv）

Single Channel 16 Needle

Capable of manufacturing nanofiber membrane rapidly, only needs 30min to manufacture a membrane.

Heated Nozzle

Capable of controlling the spinning material’s temperature.

Microspheres Nozzle

For manufacturing microspheres.

#electrospinning #biological #3D printer #nanofiber #nanomaterials #tissue engineering

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lewiisukmb · 7 years

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Aestus Sigma vs Aestus Fog

Two designer radiators from the Aestus bathroom radiator collection complement one another very nicely, but if you can only pick one, which would it be? That’s why the main event today is… Aestus Sigma vs Aestug Fog!

Like always at DRS we make things easier for you, and this time we’ve put together a comparison of these two excellent bathroom heaters to help you choose.

Both the Sigma and the Fog feature what we call ‘fingers’ which are used in different ways to create very unique shapes.

Aestus Sigma

This radiator is a good one for the imagination, do you see a radiator? A moustache comb? Turn it one way and do you see a post-modern interpretation of moose antlers? Turn it the other way and are you now looking at icing dripping over the top of a cake?

Whatever it looks like, it’s both stylish and practical. It comes in three sizes; 1088mm tall, 1400mm and 1712mm, all at the same width of 600mm. Standard towel rails are at 500mm wide, but the extra width of the Sigma allows you to hang towels onto its fingers with the ample space you would expect. To give it the flexibility you would expect with a designer towel radiator, the Sigma is available in both Matt White and Matt Black to suit different themes.

The heat outputs produced are reasonable as well despite the flat shape, with the largest size producing 2668 BTUs. Not only is it an attractive radiator, it comes with a 15 year long guarantee, which for a steel radiator is absolutely phenomenal.

Aestus Fog

Contrasting to the long, open shape of the Sigma, the compact style of the Aestus Fog is a lovely distinction. The Fog’s appearance is an artistic interpretation of a pure white mist forming or fading in front of you – starkly the contrasting to the Sigma’s design.

The slightly oblong proportions of the Fog give it a satisfying overall appearance, with its two sizes coming in at 592mm high x 800mm wide and 790mm x 1100mm. It’s also available in both Matt White and Matt Black just like the Sigma, with the finish choice having a more dramatic effect due to the solid shape of the Fog.

Functionality was the main consideration for the final design of the Fog, and with 7 separate places to drape your towels to dry you have a large surface area where you can hang smaller towels, and even a large one completely unfolded if you felt so inclined!

While the heat output of the Aestus Fog is able to reach a higher total than the Sigma (2873 BTUs), the shape of the radiator might limit which bathrooms and where in each bathroom it can be placed. It requires a lot of space to install it, but if you do have that space it looks neat, warm and makes a wonderful design statement.

Our Verdict

The dream choice between these two radiators would be to fit one into two separate bathrooms and have them quaintly match with one another. If your bathroom is very substantial then have them both within the same space, perhaps with the Sigma as the stand-alone towel radiator, and the Fog over a bath.

If you must choose between the two, then first you must consider whether you can actually fit one or the other in your home at a size big enough to give you the heat you need. If you could fit either of them, which will be more practical for the function you need.

They both look fantastic and have 15 year guarantees, as well as coming in the same black or white finish options, so the final deciding factor would be which one suits the space available for it the best without looking crammed in or lost.

The post Aestus Sigma vs Aestus Fog appeared first on Designer Radiator Showroom. Source: https://www.designerradiatorshowroom.co.uk/blog/aestus-sigma-vs-aestus-fog/

from Designer Radiator Showroom https://designeradiators.wordpress.com/2017/09/15/aestus-sigma-vs-aestus-fog/

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joshuanormn · 7 years

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Aestus Sigma vs Aestus Fog

Like always at DRS we make things easier for you, and this time we’ve put together a comparison of these two excellent bathroom heaters to help you choose.

Both the Sigma and the Fog feature what we call ‘fingers’ which are used in different ways to create very unique shapes.

Aestus Sigma

Aestus Fog

Our Verdict

The post Aestus Sigma vs Aestus Fog appeared first on Designer Radiator Showroom. from Designer Radiator Showroom https://www.designerradiatorshowroom.co.uk/blog/aestus-sigma-vs-aestus-fog/ from Designer Radiator Showroom https://designerradiators.tumblr.com/post/165368449306

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designerradiators · 7 years

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Aestus Sigma vs Aestus Fog

Two designer radiators from the Aestus bathroom radiator collection complement one another very nicely, but if you can only pick one, which would it be? That's why the main event today is... Aestus Sigma vs Aestug Fog!

Like always at DRS we make things easier for you, and this time we’ve put together a comparison of these two excellent bathroom heaters to help you choose.

Both the Sigma and the Fog feature what we call ‘fingers’ which are used in different ways to create very unique shapes.

Aestus Sigma

Aestus Fog

Our Verdict

The post Aestus Sigma vs Aestus Fog appeared first on Designer Radiator Showroom. from Designer Radiator Showroom https://www.designerradiatorshowroom.co.uk/blog/aestus-sigma-vs-aestus-fog/

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omgmichellinastuff · 7 years

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Hydrotherm’s Rough in Process

It took two days to complete the ‘rough in’ process, the plumbers basically ran, from the Bosche boiler, 25 inch pink Rehau piping, into 20 down to 16 into the chrome copper, where it comes out the wall, where it meets chrome and brass pipes going into the walls and outside, ready for the boiler. The black pipe usually used for plumbing can’t be used with hydronic because it’s transparent; whereas, the pink is not. The pipe is insulated with black foam. Pink Noggins were put in so they have something to screw into when they come back for the ‘fit out’. That’s when the real stuff happens!

For now it’s been pressurised with most of the water the system will ever need.

In the next part of the fit out: After the hydronic heating panels are connected to the noggins, a central control panel is placed in the main living area. This is where the temperature can be set, on a timer, or automatically switched off once the house is warm enough: this is where the beauty of the system comes in: the water in the panels and pipes stays hot, aka free heating. They can run on both gas and electric. Ours has a Bosch boiler, which runs on gas and is installed outside, away from any opening windows—being gas and all. Don’t want that wafting through the windows, inside.

The panels can be painted in powder coat to match any of the Dulux colour range. It’s cheaper to go all white though. Although, to match the bright pink/red feature wall in my office, I’d love a fire-engine red panel; I’m still thinking about the $110 extra that it would cost, and how it wont fit into the project’s budget.

Our pipes were located at 1100mm off the ground.

And this is our boiler:

[gview file=”http://the-labyrinth.com/wp-content/uploads/2017/08/BOSCH-30KW-NC-HYDRONIC-BOILER.pdf”%5D

Are they Mould Free?

In reality, there are no filters to change or clean, which means there’s no place for mould to grow: dust, mould’s main food source, cannot congregate. But what I like best about these heaters is the fact that once paid for—because of the installation, they do cost more than most heating systems upfront—they begin to pay for themselves as time goes on until eventually, you get your heating for free. Now, if you were to go solar, harnessing the sun’s energy, with one of those awesome Tesla batteries, you’d be off to a free start much sooner.

How to Clean the Panels

Just use a dust collecting cloth like Sabco or even use the dust brush on your vacuum. Pretty simple!

How do they guarantee it won’t leak?

Rehau fittings are 99.9% guaranteed not to leak.

Other Guarantees:

7 years on the panels; 7 years on the installation. The boiler is a five year guarantee. If something did leak, Hydrotherm would go back to the company and insurance would cover water damage–or the prevention of it, rather.

It’s a sealed system that doesn’t need replenishing. Only half a glass of condensation is released per year into the atmosphere. That half glass condensation is released into the building envelope over the course of a year. That’s it for adding moisture to the building.

Because our house is so well insulated with breathing walls, it shouldn’t be an issue.

Our First and Last stop was Hydrotherm

But we did get three quotes, Hydrotherm being the first and only showroom we went to. It was back in 2011, planning stage and my health declined from around that time so I wasn’t up to going to showrooms without going to the hassle of making fragrance free appointments.

Just had 110 PV solar panels installed at Hydrotherm. That’s 170kw worth of panel glistening in the sun, currently averaging around 85kwh per day… not bad for Melbournes winter. All the credit for the install goes to the crew at Solar, Energy, Environment. They did a stellar job!! ______________________________ #solar #pvsolar #photovoltaic #photovoltaicsolarsystem #hydrothermtowelrails #hydrotherm #drone #melbourneskyline #hydronic #hydronicheating #hydronicheatingmelbourne #buderusradiator #boschbuderus music by Bensound.com

A post shared by Hydrotherm Hydronic Heating (@hydrotherm_hydronic) on Jun 19, 2017 at 5:24pm PDT

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Our Only Challenge on the Day, Solved by Hydrotherm

The front, north facing (sunny side), has a room somewhat like an entrance room but it’s closed in, like an air-lock. There’s the front door, then, leading out into the house, is a glass wall made from a large window joined by a Zenit glass external ‘lift and slide, tilt and turn door‘ (I’ll show you these in detail later, in my 7 part window series)—used internally—to create a room that’s not only an air-lock but will be used to prevent unwanted mould exposures, chemical exposures and allergic reactions to items bought into the living spaces.). Everything stops right there before coming into the house. There will be no exposures in my home-to-be!

Air lock front entrance room ~ or if you’re fragrance free you can use the middle door 🙂

We didn’t include a hydronic panel because it’s north-facing. We thought the sun would heat this room just fine. You see, based on ‘passive heating’ design where the north-facing windows are floor to ceiling, while the eaves come out 600 mm to block the higher-in-the-sky summer sun yet allowing in the lower-in-the-sky winter sun, it stays warm when it’s sunny even on a cold day. But what about those Melbourne days, weeks even, where we don’t have any sun? I mean this is a room where someone may have to change clothes before being allowed in to shower, if they are contaminated with fragrances, or, worse, mould… (Yeah, I know, better get some blinds, lol.)

It wasn’t really a problem, because even though there wasn’t room for a panel—it seemed, as the room has glass on three sides—and a wall to wall cupboard on one, where was there room?

One of the Hydrotherm guys phoned into the office with the specs of a small corner and we were fitted for a vertical panel heater like this one:

A Radiatior for every wall. Buderus (22)900×400 ______________________________ #boschhydronic #boschbuderus #hydronicradiators #hydronicheating #hydronic

A post shared by Hydrotherm Hydronic Heating (@hydrotherm_hydronic) on Mar 23, 2017 at 2:36pm PDT

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Why we used Hydrotherm

For us, the most difficult part was making sure all the materials were health friendly for myself—meaning that they are VOC, petrochemical and of course, mould free. Plus, I had to know exactly which chemicals would be used for installation, and if it were possible to use our chemicals, which we had tested for safety; but most of all, I needed the tradespeople to go fragrance-free (See first post on how to organise this.). Now, if that laundry list of wants is not long enough, we needed the best price! Hydrotherm came to the party! They beat other hydronic companies by up to half in one of the quotes, and were willing to match any cheaper price. Considering the panels are powder coated stainless steel metal and the towel racks (which act as bathroom heaters as well), chrome.

Towel rack and hydronic heater

[gview file=”http://the-labyrinth.com/wp-content/uploads/2017/08/Hydrotherm-Hydronic-Towel-Rails.pdf”%5D

A Clean Building Site is a Good Start to a Mould-free Home

Building a mould free home means that you must keep the wall cavities and floors dust and debris free. This way mould has been robbed of a food source, lessening the chance of it growing; and if the wall cavities and roof trusses are kept dry there will be no mould. When it came to any mess from our hydronic fit out, Hydrotherm cleaned up after the job. (This is not just a tradies job, it’s yours: a building site for a CIRS patient must be kept impeccably clean!)

Chemicals Used

We used ‘Sellys 3 in 1 Silicone’: very low VOC. However, when Hydrotherm come back we’ll have a better silicone, as far as being water-tight goes: Sikaflex. Just stay far away until it’s dry. And, as always, test for your own suitability on a clean piece of tile, left out overnight, then bought inside if you don’t have symptoms with it. I’m finding there are products I’m not good with wet but fine with once dry. And I’d rather a silicone that keeps water out, right? Plus we used mortar on the outside of any hole protruding through the building.

On instagram I posted about this Camel Rock Yoga mat Mandala in the back room, the retreat. Southside. All glass windows. Wicked view. Andrew, from Hydrotherm pointed out how this room could be used for Bikram, hot yoga. This is going to be a thing. Thanks, Andrew.

The #retreat 🏡 Not sure why it’s called that. Makes it sound like a place to go when parents argue. “Oh, I’ll just go retreat from this situation.” #yoga #space sounds much better! 🕉 #buildanecofriendlyallergyfreehouse 🏡

A post shared by Michellina (@michellinaoutofthelabyrinth) on Apr 27, 2017 at 11:13pm PDT

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Hydrotherm Part I: Radiant Heat Fights Allergies with Hydrotherm Hydronic Heating

Hydrotherm Part II: Why Hydrotherm Hydronic Heating is a Breath of Fresh Air

Hydrotherm Part III: Hydrotherm Hydronic heating for our Eco-friendly, Allergy Free House

Hydrotherm Contact Details

Hydrotherm: Hydronic Heating

Greenheat: Hydronic Heating

Hydrotherm Instagram

Email: [email protected]

P: 03 9464 6381

Showroom

96 Commercial Drive,

Thomastown, VIC 3074

Opening Hours

Mon-Fri 7.30am to 5pm

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Our Difference

Recent Projects

FAQ

The Science on CIRS aka mould illness

Building a Safe Home: The letter from my treating Allergist and Immunologist

Up-and-coming book: Freedom: an Eco-Friendly, Allergy Free House (link coming)

Christa Upton: Building a House for Multiple Chemical Sensitivity, digital version

Toxic Mould Support Australia: Science-backed: Facts on Mould

EI Wellspring: How to Have a Low EMF Hydronic System (from the US)

Hydrotherm Hydronic heating for our Eco-friendly, Allergy Free House (Part III) Hydrotherm's Rough in Process It took two days to complete the 'rough in' process, the plumbers basically ran, from the Bosche boiler, 25 inch pink…

#Allergy free heating #Bikram #Bosch boilers #Camel Rock Yoga #Freedom: an allergy free eco-friendly house #hydronic heating #Hydrotherm #Hydrotherm hydronic heating #mould-free heating #Rehau fittings

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