Taxanaha tuubada dabacsan ee OEM Cryogenic
Tiknoolajiyada Sare ee Dahaarka ee Joogteynta iyo Dabacsanaanta: Taxanahayaga OEM Cryogenic Insulated Flexible Hose wuxuu ku qalabaysan yahay tignoolajiyada dahaarka sare leh, taas oo u oggolaanaysa inay ilaaliso adkeysiga iyo dabacsanaanta jawiga aadka u daran. Tani waxay hubinaysaa in tuubooyinka ay u shaqeyn karaan si la isku halleyn karo oo wax ku ool ah xaaladaha heerkulka hooseeya, iyagoo siinaya isku xirka muhiimka ah ee nidaamyada cryogenic iyada oo aan waxyeello loo geysan waxqabadka.
Ikhtiyaarada la beddeli karo si loo buuxiyo Shuruudaha Warshadaha ee Kala duwan: Aqoonsiga baahiyaha kala duwan ee codsiyada warshadaha, OEM Cryogenic Insulated Flexible Hose Taxanaha wuxuu bixiyaa xulashooyin la beddeli karo. Tan waxaa ka mid ah kala duwanaanshaha dhererka tuubada, dhexroorka, walxaha dahaarka, iyo xirmooyinka dhamaadka, awood u siinaya xalal ku habboon oo si aan kala go 'lahayn ugu dhex milma nidaamyada cryogenic ee kala duwan iyadoo la buuxinayo shuruudaha warshadaha gaarka ah.
Waxaa lagu soo saaray Xaruntayada Farshaxanka oo Diirada Saartay Saxda iyo Tayada: OEM Cryogenic Insulated Flexible Hose Taxanaha waxaa laga soo saaray xaruntayada casriga ah, halkaasoo injineernimada saxda ah iyo hababka xakamaynta tayada adag laga hirgaliyay hubi waxqabadka sare iyo isku halaynta. Iyadoo diiradda la saarayo isticmaalka qalab tayo sare leh iyo farsamooyinka wax soo saarka sare, tuubooyinka waxaa loogu talagalay in ay u adkeystaan adag ee codsiyada cryogenic iyada oo la kulmayo heerarka warshadaha ugu sarreeya.
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Tuubooyinka dahaaran ee faaruqinta
Tuubbada dahaaran ee Vacuum dahaaran (tuubada vacuum), oo ah Vacuum Jacketed Hose, oo ah beddelka saxda ah ee dahaarka tuubooyinka caadiga ah. Marka la barbar dhigo dahaarka tuubooyinka caadiga ah, qiimaha daadinta kulaylka ee VIP waa kaliya 0.05 ~ 0.035 jeer dahaarka tuubooyinka caadiga ah. Si weyn u badbaadi tamarta iyo kharashka macaamiisha.
Taxanaha wax soo saarka ee Vacuum Insulated Hose, Vacuum Insulated Pipe, Vacuum Insulated Valve, iyo Wejiga Kala-saar ee Shirkadda Qalabka Cryogenic ee HL, kaas oo soo maray taxane ah daaweyn farsamo oo aad u adag, ayaa loo isticmaalaa wareejinta oksijiinta dareeraha ah, nitrogen dareeraha, argon dareeraha, dareeraha hydrogen, helium dareere ah, LEG iyo LNG, iyo alaabooyinkan waxaa loogu adeegaa qalabka cryogenic (tusaale, taangiga cryogenic, dewar iyo coldbox iwm) ee warshadaha kala soocida hawada, gaaska, duulista, elektarooniga, superconductor, chips, farmashiyaha, isbitaalka, biobank , Cuntada & Cabbitaannada, Isku-dubbaridka Automation-ka, Rabadhka, Wax-soo-saarka kiimikada cusub, birta & birta, iyo cilmi-baarista sayniska iwm.
Afar Nooc Oo Isku Xidhan
Si loo kordhiyo baahiyaha kala duwan ee macaamiisha, waxaa jira inta badan afar nooc oo isku xira VI Flexible Hose. Saddexda nooc ee isku xidhka ee hore waxay khuseeyaan oo keliya meelaha isku xidhka ee u dhexeeya VI Flexible Hoses. Midka afraad, nooca isku xirka dunta waxaa guud ahaan loo isticmaalaa kaliya xirmooyinka VI Hose ee qalabka iyo haanta kaydinta.
Marka VI Flexible Hose ay ku xirto qalabka, haanta kaydinta iyo wixii la mid ah, isku xirka isku xirka waxaa loo habeyn karaa iyadoo loo eegayo shuruudaha macaamiisha.
Baaxadda Codsiga
Vacuum Bayonet Connection Type with Clamps | Vacuum Bayone Connection Type oo leh Flanges iyo Bolts | Nooca isku xirka alxanka | Nooca Xidhiidhka Wadajirka ah ee Thread | |
Nooca isku xirka | Isku-qabsiga | Flanges iyo Bolts | Weld | Dulqaad |
Nooca dahaarka ee kala-goysyada | Vacuum | Vacuum | Perlite ama Vacuum | Duubista Alaabta Dahaaran |
Daawaynta dahaaran ee goobta | No | No | Haa. | Haa |
Dhexroorka Magaca ah ee Dhuumaha Gudaha | DN10(3/8")~DN25(1") | DN10(3/8")~DN80(3") | DN10(3/8")~DN150(6") | DN10(3/8")~DN25(1") |
Cadaadiska Naqshadeynta | ≤8 bar | ≤16 bar | ≤40 bar | ≤16 bar |
Rakibaadda | Fudud | Fudud | Weld | Fudud |
Heerkulka naqshadeynta | -196℃~ 90℃ (LH2 & LHe:-270℃ ~ 90℃) | |||
Dhererka | ≥ 1 mitir/pcs | |||
Qalab | 300 Taxane ahama | |||
Dhexdhexaad | LN2, LOX, LAr, LHe, LH2, LNG |
Daboolka ilaalinta
Baaxadda Waxsoosaarka
Alaabta | Tilmaamid | Vacuum Bayonet Connection with Clamps | Vacuum Bayonet Connection oo leh Flanges iyo Bolts | Xidhiidhka dahaaran ee alxanka | Xidhiidhka dunta |
Faakiyum Dahaarka Tuubbada Dabacsan | DN8 | HAA | HAA | HAA | HAA |
DN15 | HAA | HAA | HAA | HAA | |
DN20 | HAA | HAA | HAA | HAA | |
DN25 | HAA | HAA | HAA | HAA | |
DN32 | / | HAA | HAA | / | |
DN40 | / | HAA | HAA | / | |
DN50 | / | HAA | HAA | / | |
DN65 | / | HAA | HAA | / | |
DN80 | / | HAA | HAA | / | |
DN100 | / | / | HAA | / | |
DN125 | / | / | HAA | / | |
DN150 | / | / | HAA | / |
Sifada Farsamada
Heerkulka naqshadeynta | -196~90℃ (LHe:-270~90℃) |
Heerkulka deegaanka | -50 ~ 90 ℃ |
Heerka daadinta vacuum | ≤1*10-10Pa*m3/S |
Heerka Vacuum ka dib dammaanad qaadka | ≤0.1 Pa |
Habka dahaaran | Xakamaynta lakabka badan ee Vacuum High. |
Adsorbent iyo Getter | Haa |
Cadaadiska Tijaabada | 1.15 Times Cadaadiska Naqshadeynta |
Dhexdhexaad | LO2, LN2, LAr, LH2, LHe, LUG, LNG |
Firfircoonaanta iyo Faakuumka Joogta ah ee Dahaarka Tuubbada Dabacsan
Vacuum Insulated (VI) Hose dabacsan waxa loo qaybin karaa Dynamic iyo Static VI Flexible Hose.
lThe Static VI Hose si buuxda ayaa loogu dhameeyay warshadda wax soo saarka.
lNidaamka VI Dynamic waxa la siiyaa xaalad faakuum ah oo xasiloon iyadoo si joogto ah loogu shubayo nidaamka bamka faakuumka ee goobta, daawaynta faakiyuumku kuma dhici doonto warshadda. Inta ka hartay isku dhafka iyo daawaynta habka ayaa weli ku jira warshadda wax soo saarka. Markaa, Tuubbooyinka firfircoonida VJ waxay u baahan yihiin in lagu qalabeeyo Nidaamka Pump Vacuum.
Vacuum Dahaaran Tuubada dabacsan | Faakuumka Joogta ah ee Dahaarka leh ee Tuubbada Dabacsan | |
Hordhac | Darajada faakuumka ee vacuum interlayer si joogto ah ayaa loola socdaa, iyo bamka faakuumka si toos ah ayaa loo xakameeyaa si loo furo oo loo xidho, si loo hubiyo xasiloonida iyo waxtarka shahaadada vacuum | VJTuubada dabacsans dhamaystiro shaqada huurka faakuumka warshadda wax soo saarka. |
Faa'iidooyinka | Haysashada faakuumku aad ayuu u deggan yahay, asal ahaan meesha ka saaray dayactirka faakuumka mustaqbalka shaqayntiisa. | Maalgelin dhaqaale oo badan iyo rakibid fudud oo goobta ah |
Vacuum Bayone Connection Type with Clamps | Codsasho | Codsasho |
Vacuum Bayone Connection Type oo leh Flanges iyo Bolts | Codsasho | Codsasho |
Nooca isku xirka alxanka | Codsasho | Codsasho |
Nooca Xidhiidhka Wadajirka ah ee Thread | Codsasho | Codsasho |
Vakuum Firfircoon oo Dahaaran oo Dabacsan HoseNidaamka: Waxay ka kooban yihiin tuubooyinka dabacsan ee Vacuum, Tuubooyinka boodboodka iyo nidaamka Pump Vakuum (oo ay ku jiraan matoorada vacuum, valves solenoid iyo vacuum gauges). Si fudud loogu rakibay qol yar. Dhererka hal Vacuum Insulated Flexible Hose waxaa loo habeyn karaa iyadoo loo eegayo shuruudaha macaamiisha.
2.QAAFADDA IYO MUUQAALKA
HL-HX-X-000-00-X
Summada
Qalabka Cryogenic HL
Sharaxaada
HD: Dynamic VI Hose
HS: Static VI Hose
Nooca isku xirka
W: Nooca isku xirka alxanka
B: Vacuum Bayone Connection Type with Clamps
F: Vacuum Bayone Connection Type with Flanges iyo bolts
T:Thread Connection Joint Connection Type
Dhexroorka Magaca ah ee Dhuumaha Gudaha
010:DN10
…
080: DN80
…
150: DN150
Cadaadiska Naqshadeynta
08: 8bar
16:16 bar
25: 25 bar
32: 32bar
40: 40bar
Qalabka Dhuumaha Gudaha
A: SS304
B: SS304L
C: SS316
D: SS316L
E: Mid kale
3.1 Vacuum taagan
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHSB01008X | Vacuum Bayone Connection Type with Clamps for Static Vacuum Insulated flexible Hose | DN10, 3/8" | 8 bar
| 300 Taxane ahama | ASME B31.3 | X: Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHSB01508X | DN15, 1/2" | |||||
HLHSB02008X | DN20, 3/4" | |||||
HLHSB02508X | DN25, 1" |
Dhexroorka Magaca ah ee Dhuumaha Gudaha:Lagu taliyay
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Cadaadis Naqshad: lagu taliyay ≤ 8 bar. Ama dooro Nooca Xidhiidhka Vacuum Bayone ee leh Flanges iyo Bolts (≤16 bar), Nooca Xidhiidhka Welded (≤40 bar)
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHSF01000X | Vacuum Bayone Connection Type with Flanges and Bolts for Static Vacuum Insulated flexible Hose | DN10, 3/8" | 8-16 bar | 300 Taxane ahama | ASME B31.3 | 00: Cadaadiska Naqshadeynta. 08 waa 8 bar, 16 waa 16 bar.
X: Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHSF01500X | DN15, 1/2" | |||||
HLHSF02000X | DN20, 3/4" | |||||
HLHSF02500X | DN25, 1" | |||||
HLHSF03200X | DN32, 1-1/4" | |||||
HLHSF04000X | DN40, 1-1/2" | |||||
HLHSF05000X | DN50, 2" | |||||
HLHSF06500X | DN65, 2-1/2" | |||||
HLHSF08000X | DN80, 3" |
Dhexroorka Magaca ah ee Dhuumaha Gudaha:Lagu taliyay
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Cadaadis Naqshad: Lagu taliyay ≤ 16 bar. Ama dooro Nooca Xidhiidhka Welded (≤40 bar).
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHSW01000X | Nooca isku xirka alxanka ee tuubada dabacsan ee dahaaran ee Static Vacuum | DN10, 3/8" | 8-40 bar | 300 Taxane ahama | ASME B31.3 | 00: Cadaadiska Naqshadeynta 08 waa 8 bar, 16 waa 16 bar, iyo 25, 32, 40.
X: Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHSW01500X | DN15, 1/2" | |||||
HLHSW02000X | DN20, 3/4" | |||||
HLHSW02500X | DN25, 1" | |||||
HLHSW03200X | DN32, 1-1/4" | |||||
HLHSW04000X | DN40, 1-1/2" | |||||
HLHSW05000X | DN50, 2" | |||||
HLHSW06500X | DN65, 2-1/2" | |||||
HLHSW08000X | DN80, 3" | |||||
HLHSW10000X | DN100, 4" | |||||
HLHSW12500X | DN125, 5" | |||||
HLHSW15000X | DN150, 6" |
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHST01000X | Vacuum Bayone Connection Type with Clamps for Static Vacuum Insulated flexible Hose | DN10, 3/8" | 8-16 bar | 300 Taxane ahama | ASME B31.3 | 00: Cadaadiska Naqshadeynta. 08 waa 8 bar, 16 waa 16 bar.
X: Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHSB01500X | DN15, 1/2" | |||||
HLHSB02000X | DN20, 3/4" | |||||
HLHSB02500X | DN25, 1" |
Dhexroorka Magaca ah ee Dhuumaha Gudaha:Lagu taliyay
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Cadaadis Naqshad: Lagu taliyay ≤ 16 bar. Ama dooro Nooca Xidhiidhka Welded (≤40 bar)
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
3.2 Nidaamka Tuubbooyinka Dahaaran ee Vacuum Firfircoon
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHDB01008X | Vacuum Bayone Connection Type with Clamps for Dynamic Vacuum Insulated flexible Hose | DN10, 3/8" | 8 bar
| 300 Taxane ahama | ASME B31.3 | X:Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHDB01508X | DN15, 1/2" | |||||
HLHDB02008X | DN20, 3/4" | |||||
HLHDB02508X | DN25, 1" |
Dhexroorka Magaca ah ee Dhuumaha Gudaha:Lagu taliyay
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Cadaadis Naqshad: lagu taliyay ≤ 8 bar. Ama dooro Nooca Xidhiidhka Vacuum Bayone ee leh Flanges iyo Bolts (≤16 bar), Nooca Xidhiidhka Welded (≤40 bar)
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
Xaaladda Korontada:Goobtu waxay u baahan tahay inay koronto siiso matoorada faakuumka oo ay ku wargeliso HL Qalabka Cryogenic macluumaadka korantada maxalliga ah (Voltage iyo Hertz).
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHDF01000X | Vacuum Bayone Connection Type with Flanges and Bolts for Dynamic Vacuum Insulated flexible Hose | DN10, 3/8" | 8-16 bar | 300 Taxane ahama | ASME B31.3 | 00: Cadaadiska Naqshadeynta. 08 waa 8 bar, 16 waa 16 bar.
X: Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHDF01500X | DN15, 1/2" | |||||
HLHDF02000X | DN20, 3/4" | |||||
HLHDF02500X | DN25, 1" | |||||
HLHDF03200X | DN32, 1-1/4" | |||||
HLHDF04000X | DN40, 1-1/2" | |||||
HLHDF05000X | DN50, 2" | |||||
HLHDF06500X | DN65, 2-1/2" | |||||
HLHDF08000X | DN80, 3" |
Dhexroorka Magaca ah ee Dhuumaha Gudaha:Lagu taliyay
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Cadaadis Naqshad: Lagu taliyay ≤ 16 bar. Ama dooro Nooca Xidhiidhka Welded (≤40 bar).
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
Xaaladda Korontada:Goobtu waxay u baahan tahay inay koronto siiso matoorada faakuumka oo ay ku wargeliso HL Qalabka Cryogenic macluumaadka korantada maxalliga ah (Voltage iyo Hertz).
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHDW01000X | Nooca isku xirka alxanka ee Vacuum-ka firfircoon ee tuubada dabacsan | DN10, 3/8" | 8-40 bar | Birta aan Lahayn 304, 304L, 316, 316L | ASME B31.3 | 00: Cadaadiska Naqshadeynta 08 waa 8 bar, 16 waa 16 bar, iyo 25, 32, 40. .
X: Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHDW01500X | DN15, 1/2" | |||||
HLHDW02000X | DN20, 3/4" | |||||
HLHDW02500X | DN25, 1" | |||||
HLHDW03200X | DN32, 1-1/4" | |||||
HLHDW04000X | DN40, 1-1/2" | |||||
HLHDW05000X | DN50, 2" | |||||
HLHDW06500X | DN65, 2-1/2" | |||||
HLHDW08000X | DN80, 3" | |||||
HLHDW10000X | DN100, 4" | |||||
HLHDW12500X | DN125, 5" | |||||
HLHDW15000X | DN150, 6" |
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
Xaaladda Korontada:Goobtu waxay u baahan tahay inay koronto siiso matoorada faakuumka oo ay ku wargeliso HL Qalabka Cryogenic macluumaadka korantada maxalliga ah (Voltage iyo Hertz).
Model | Isku xirkaNooca | Dhexroorka Magaca ah ee Dhuumaha Gudaha | Cadaadiska Naqshadeynta | Qalabee Dhuumaha Gudaha | Heerka | Odhaah |
HLHDT01000X | Vacuum Bayone Connection Type with Clamps for Dynamic Vacuum Insulated flexible Hose | DN10, 3/8" | 8-16 bar | 300 Taxane ahama | ASME B31.3 | 00: Cadaadiska Naqshadeynta. 08 waa 8 bar, 16 waa 16 bar.
X: Qalabka Dhuumaha Gudaha. A waa 304, B waa 304 l, C waa 316, D waa 316 l, E waa mid kale. |
HLHDB01500X | DN15, 1/2" | |||||
HLHDB02000X | DN20, 3/4" | |||||
HLHDB02500X | DN25, 1" |
Dhexroorka Magaca ah ee Dhuumaha Gudaha:Lagu taliyay
Dhexroorka Magaca ah ee Dhuumaha Dibadda:Waxaa lagu taliyay Heerarka Ganacsiga ee Qalabka Cryogenic HL. Waxa kale oo lagu soo saari karaa iyadoo loo eegayo shuruudaha macaamilka.
Cadaadis Naqshad: Lagu taliyay ≤ 16 bar. Ama doorta, Nooca Xidhiidhka Welded (≤40 bar)
Qalabka Dhuumaha Dibadda: Shuruudo gaar ah la'aanteed, walxaha tuubada gudaha iyo tuubada dibadda ayaa la dooran doonaa isku mid.
Xaaladda Korontada:Goobtu waxay u baahan tahay inay koronto siiso matoorada faakuumka oo ay ku wargeliso HL Qalabka Cryogenic macluumaadka korantada maxalliga ah (Voltage iyo Hertz).