Pompele sunt de doua feluri: de valuri si de recirculare.

La cele de valuri, majoritatea au rotoare cu elice (propeller). Ele trebuie sa se invarta intr-un anumit sens pentru a impinge apa.

Cele de recirculare au rotoare cu pale perpendiculare pe ax (impeller), ceea ce le permite sa ridice apa la o anumita inaltime fata de pompa (max. head). Acestea se pot folosi la spumatoarele de proteine ca atare (skimmerele Tunze), cu un Venturi. Rotoare modificate pentru a toca mai fin bulele de aer vor produce o spuna mai fina, ca atare vor fi mai eficiente. De asemenea, toaca (zoo/fito) planctonul, pe care il trimite in spuma si de acolo in cupa skimmerului. Cele doua tipuri de rotoare modificate sunt cu ace (needle impeller) si cu plasa (mesh impeller) (majoritatra skimmerelor cu pretentii - Deltec, Schuran, etc.).

La pompele de valuri Sicce se foloseste impeller, ca atare sunt mai tolerante cu generatoarele de valuri, care alterneaza pompele pentru a obtine un flow turbulent. Restul pompelor de valuri au un restrictor de directie, fie electronic, fie fizic (pin de plastic, bucati de cauciuc, masca frontala modificata pentru a opri o elice plecata in sens invers, etc.).

Lucian wrote:De ce te complici?

Multumesc de raspuns.
Ma complic pentru ca:
- nu am experienta la lucrul manual
- sunt obsesiv- compulsiv
- lucrurile simple mi se par complicate
- iar cele complicate, mai simple

Una peste alta, inainte de cum asez lucrurile in cutie, trebuie sa ma dumiresc cum imi fac schema electrica. Deocamdata astept sa-mi vina controllerele ca sa vad cum ma lumineaza documentatia tehnica. Am insa o banuiala ca rezistenta pe care am vazut-o era legata cu ventilatorul, nu la LEDuri.

Voi avea nevoie de o placa de aluminiu 220x120.5x2mm care sa intre pe prima sina de sub suruburi, pe care sa fixez LEDurile fizic. Aceasta va fi in contact direct cu radiatorul pe toata suprafata.

Am hotarat ca voi lipi LEDurile in serie, vor fi cinci canale:
- blue x10
- cool white x10
- royal blue x10
- cool white x10
- blue x10

In benzile de cool white voi strecura si cateva LEDuri rosii si UV/near UV.

Sper sa pot lipi LEDurile cu asa ceva. Sfaturi, sugestii, pareri?

Avandu-le in mana, parca incepe sa devina plauzibil proiectul.
De cum imi vin controllerele incep sa ma joc.

Mai am nevoie de un transformator, inca nu m-am lamurit daca iau de 12V sau de 24V, probabil voi sfarsi prin a comanda cate unul din fiecare. Nevasta a priceput in sfarsit pe ce cheltuiam banii, pare mai relaxata si putin amuzata. Probabil se temea sa nu mai apara un acvariu in casa. ... nu inca.

Azi mi-au venit cablurile pentru lipit LEDurile intre ele si LEDurile pentru doua canale de 10, un canal de CREE XT-E cool white si unul de CREE XP-E2 blue.

AquaIllumination Hydra52 HD

Dimensions
30.2cm x 13.7cm x 4cm @ 1.54kg

Power Output
135 watts from the wall.

LEDs
12 - Cree XP-G2 Cool White (> 70 CRI)
12 - Cree XT-E Royal Blue
12 - Cree XP-E2 Blue
4 - OSRAM OSLON Deep Red
4 - Cree XP-E2 Green
4 - SemiLED 415nm
4 - SemiLED 400nm

Ei au reusit sa puna 52 de LEDuri in 30.2x13.7x4 cm, dar jumatate din cutie este radiatorul cu ventilatorul incorporat. Probabil ca jumatatea cu LEDuri este impermeabila si are de asemenea un radiator de aluminiu pe care sunt montate LEDurile.

Usor si sigur, devine deal.

dan.pavelescu wrote:Sa-ti traiasca!

Andrei, referitor la clipul din postul anterior. La minutul 1, ce e chestia aia in care se joaca Nemo? Anemona, coral..?

E un puiut de Sarcophyton de la colonia mama din AquaNano40. Am avut zece, am pastrat doi, unul in Noemi's Reef si unul in AN40 langa colonia mana. Vezi prin succesiunea de filme de pe YT, istoria coralului initial (de cand il tineam sub lumini pentru plantate, cum l-am tuns cu bisturiul si apoi bebelusii in Noemi's Reef inainte sa-l populez cu Euphyllia (de dinainte de etapa de acum cu Gorgonieni).

E foarte iubit de clowni, nu m-as mira sa fi crescut asa de la hranit cu sperma, oua si rahat de clown.

Am intregit livestock-ul in acest acvariu cu patru exemplare de Nemateleotris decora si un Mauritia arabica - arabian cowry.

Tocmai am realizat ca modalitatea de optimizare a spatiului pentru LEDuri si cablaraie este sa renunt la LEDuri lipite pe placute stea de 20 mm si sa fac un PCB cu conexiunile intre leduri, plasat pe o placuta de aluminiu, care sa culiseze perfect in cutie.

Dupa ce ma lamuresc cum fac canalele si cum asez ledurile si verific racirea, probabil acesta ar fi varianta cea mai eleganta. Are careva idee cum se poate realiza, sau trebuie sa dau comanda la o firma specializata? Sau e prea complicat si nu merita?

Cutia are 47.5 mm, din care 22.5 mm sunt folositi de radiator si 12-15 mm sunt folositi de ventilator.
Raman 13-10 mm pentru led-uri si cablaraie.

Am gasit pasta termoconductoare pe care pot sa o pun pe canalele pe care culisez radiatorul pentru a optimiza transferul termic.

Am mai descoperit si cutia aceasta, o tin in optiuni daca ventilatorul cel mai mare care incape nu face fata la caldura disipata:

Apoi m-am uitat de ventilatoare.
Un 120 mm ar avea nevoie de taiere in rama pentru a incapea, si nici atunci nu sunt sigur.
Apoi m-am uitat ca majoritatea ventilatoarelor sunt destul de groase. Ori gasesc unul frameless si tai la CNC in radiator locul pentru el, ori folosesc unul slim si-i crestez frame-ul.

Am comandat doua ventilatoare ca sa vad cam cum se potrivesc:

PQ705 Scythe Kaze Jyu SLIM 100mm 2000RPM Case/HDD Fan 3 & 4 Pin 92mm mounting
Product Details
Model number SY1012SL12M
Dimensions 100 x 100 x 12 mm
Air volume at full speed (12V), CFM ±10% 27.6
Noise level at full speed (12V), dB(A) 29.2
Fan speed at full speed (12V), RPM ±10% 2000
Connector 3-pin (4-pin adaptor included)
Cable Length 30cm / 11.81 inch
Bearing Type Sleeve
MTBF 30,000 hours
Warranty 24 months
EAN barcode 4571225042008


ID COOLING 12V Brushless Cooling Fan Chassis DC Fans 92mm*92mm*15mm 4pin New
Featured Product?
- Ultra quiet brushless DC fan
- Material: High Quality Plastic Housing
- Speed: 800-2600 RPM
- Airflow: 38.95 CFM
- Noise: 21.0 DBA
- Low speed, moderate air flow
- Quiet sleeve-bearing design
- Fit compact computer cases, power supplies, etc
- Rating: DC 12V

Cu gandul la spatiul limitat din cutie, am inceput sa ma uit dupa solutii de racire.

Am gasit un radiator care ar putea fi prelucrat sa incapa perfect (trebuie taiate doua aripioare laterale cam cate 13 mm ca sa incapa plus subtiate ca sa culiseze (au 3 mm, trebuie sa culiseze in canale de 2 mm).

Philips LUXEON 3W Rebel ES Royal Blue RB 455nm LED 20mm Star Grow light DIY
DESCRIPTION :

LUXEON Rebel ES Royal-Blue (450-455nm) on 20mm Star Al. Board

Quantity : 5PCS
LUXEON Rebel ES royal-blue is tested and binned at 700 mA delivering consistent high lumen performance and design flexibility you need. Create high quality white light using LUXEON Rebel ES royal-blue and phosphor technology. LUXEON Rebel ES is designed for use in general illumination applications, as well as, those needing a highly saturated royal-blue color.

Features

Minimum luminous flux specified at 700 mA
Maximum junction temperature of 120ºC.
Maximum drive current 1A.
Best moisture sensitivity: JEDEC Level 1 unlimited floor life—no need for reconditioning.
RoHS compliant—lead-free reflow solder JEDEC 020c compatible.
Autoclave compliant—JESD22 A-102.
Electrically isolated thermal pad.


Benefits

Industry leading hot/cold factor enables LUXEON Rebel and LUXEON Rebel ES colors to perform at highest efficacy levels under real world operating conditions ~ 80 degree C
Create white light with royal-blue LEDs and remote phosphor technologies
Deliver more usable light and higher flux density
Designed specifically for use in remote phosphor white light applications
High efficacy emitters require less electricity than conventional solutions
Faster payback periods and lower total ownership costs
Operate more efficiently for longer periods of time while maintaining color stability
Simplified engineering and faster time to market
A single product footprint for all LUXEON Rebel emitters simplifies engineering and speeds time to market.

Cree XLamp XT-E XTE Royal Blue 450 - 460nm LED on 20mm Star Broad Aquarium Grow

High-performing royal-blue LED optimized to lower system cost for remote phosphor applications

The new XLamp XT-E Royal Blue LED delivers the industry's tightest wavelength bins combined with category-leading brightness to simplify remote phosphor designs and lower system costs.

The XLamp XT-E Royal Blue is Cree's brightest, most-efficient and smallest royal-blue LED. Based on Cree's latest silicon-carbide-based LED platform, the XLamp XT-E Royal Blue LED delivers up to 575 mW at 350 mA and 85 ° C.


Features

• 70-min CRI white and royal blue

• Royal Blue wall plug efficiency of up to 53% (@ 85 ° C, 350 mA)

• Wide Viewing Angle: 115-140 °

• Thermal resistance: 5 ° C / W

• Maximum drive current: 1.5 A

• Electrically neutral thermal path

• VF binning supported for XT-E White and Royal Blue

• XT-E Royal Blue sorted into 2.5- nm wavelength bins

• Unlimited floor life at ? 30 ° C / 85% RH

• Reflow solderable - JEDEC J-STD-020C compatible

Characteristics
Unit

Thermal resistance, junction to solder point
° C / W 5

?
Viewing Angle (FWHM) - white
Degrees 115

?
Viewing Angle (FWHM) - royal blue
Degrees 140

?
Temperature Coefficient of Voltage
mv / ° C -2.5

?
ESD Classification (HBM per Mil-Std-883D) ? ?
Class 2

?
DC forward current
mA 1500

Reverse Voltage
v5

Forward voltage (@ 350 mA, 85 ° C)
v2.85-3.4

3W Semileds UV Ultra Violet & Near-UV LEDs
(385nm, 395nm, 415nm)
We proudly present our range of UV and near-UV LEDs from Semileds, designed to boost growth and colouration. These LEDs are exceptionally high quality, built in a ceramic package offering a low thermal resistance and providing an output that is almost as good as a CREE XT-E Royal Blue LED!
Our range includes 415nm, 395nm and 385nm options for the fullest spectrum. The beam angle is available as both 125° and 55°. We also offer models with an Aluminium Nitride ceramic package, providing even higher thermal dissipation (4.4°C/W instead of 8°C/W) for cooler running and greater efficiency - and allows the LED to be pushed at higher currents (up to 1A!). As always, we offer our LEDs mounted on both aluminium and copper stars. High-current types are provided on copper stars as standard.
Comes pre-mounted on the highest quality aluminium 20mm star-shaped heatsink, with large gold-plated solder pads. Copper heatsinks are also available as an option for increased thermal dissipation, ideal for when driving these LEDs at higher currents.

5W CREE XT-E Cool White (7000K) LED
Higher power and efficiency than CREE XP-E LEDs. Our CREE XT-Es are currently our most cost-effective high power LED range.
Comes pre-mounted on the highest quality aluminium 20mm star-shaped heatsink, with large gold-plated solder pads. Copper heatsinks are also available as an option for increased thermal dissipation, ideal for when driving these LEDs at higher currents.
General Specifications:
Max. Forward Current (DC): 1500mA (that's 1.5A)

Forward Voltage (DC) (@ 350mA, 85C): Typical: 2.85V
Forward Voltage (DC) (@ 700mA, 85C): Typical: ~3.05V
Forward Voltage (DC) (@ 1000mA, 85C): Typical: ~3.17V
Forward Voltage (DC) (@ 1500mA, 85C): Typical: ~3.3V

Thermal resistance: 5C/W

Optic Viewing Angle: 115°

Bin R5 1A Specifications:
Colour/Bin: R5 1A (7000K)

Luminous flux (@ 350mA, 25C): 160lm
Luminous flux (@ 350mA, 85C): 139lm
Luminous flux (@ 700mA, 85C): 247lm
Luminous flux (@ 1500mA, 85C): 428lm

Bin S2 1A Specifications:
Colour/Bin: S2 1A (7000K)

Luminous flux (@ 350mA, 25C): 170lm
Luminous flux (@ 350mA, 85C): 148lm
Luminous flux (@ 500mA, 85C): 200.7lm
Luminous flux (@ 700mA, 85C): 263.5lm
Luminous flux (@ 1000mA, 85C): 344.4lm
Luminous flux (@ 1500mA, 85C): 456lm

5W CREE XP-G2 Cool White (6500K) LED
Higher power and efficiency than CREE XT-E and XP-G (gen 1) LEDs.
Comes pre-mounted on the highest quality aluminium 20mm star-shaped heatsink, with large gold-plated solder pads. Copper heatsinks are also available as an option for increased thermal dissipation, ideal for when driving these LEDs at higher currents.
Specifications:
Colour/Bin: S2 1C/1D (6500K)

Max. Forward Current (DC): 1500mA (that's 1.5A)

Forward Voltage (DC) (@ 350mA, 85C): Typical: 2.8V
Forward Voltage (DC) (@ 700mA, 85C): Typical: 2.9V
Forward Voltage (DC) (@ 1000mA, 85C): Typical: 3.0V
Forward Voltage (DC) (@ 1500mA, 85C): Typical: 3.1V

Luminous flux (@ 350mA, 25C): 168lm
Luminous flux (@ 350mA, 85C): 148lm
Luminous flux (@ 700mA, 85C): 271lm
Luminous flux (@ 1000mA, 85C): 360lm
Luminous flux (@ 1500mA, 85C): 488lm

Thermal resistance: 4C/W

Optic Viewing Angle: 115°

3W Semileds Cool White (10000K) LED

A high quality very-cool-white (10000K) LED from Semileds. Similar brightness to a low-bin CREE XP-G2 LED.

Comes pre-mounted on the highest quality aluminium 20mm star-shaped heatsink, with large gold-plated solder pads. Copper heatsinks are also available as an option for increased thermal dissipation, ideal for when driving these LEDs at higher currents.
Specifications:

Colour/Bin: Cool White (10000K)

Max. Forward Current (DC): 1000mA (that's 1A)

Forward Voltage (DC) (@ 350mA, 85C): Typical: 3.0-3.2V

Luminous flux (@ 350mA, 85C): 139-148lm

Thermal resistance: 8C/W

Optic Viewing Angle: 130°