k = taupū isoentropic
Tuhinga o mua k mo te paera haumaru
na Alessandro i whakatika Ruzza
Ko te rahinga o nga reera haumaru i hangaia hei tuku hau, he kohu ranei, e ai ki te Kohinga lspesl "E", me mohio ki te taunga isoentropic k i nga tikanga tuku.
Ko te whakamahi koretake o te Kohinga lspesl "E" pene "E.1", mo te rahi o nga reera haumaru, ka nui ake te whakaaro o te kaha o te tukunga o nga reera me nga kopae pakaru.
Ka hoatu e tenei tuhinga etahi aratohu hei whakatau tata i te uara o te k mo nga hau me te
ka whakaatu i te hapa ma te whakaaro k e rite ana ki te ōwehenga o nga wera motuhake Cp/Cv
Ko te rere o te Isoentropic ma te puha
Te ture [1] e whakamahia ana i roto i te kohinga "E", me etahi atu Itari [2] me te tangata ke [3] standmo te tatau i nga maru haumaru me tuku nga hau, nga kohu ranei, ko te rerenga isoentropic i roto i te puha i raro i nga tikanga peke nui, mo te hau pai ko:
kei hea te expansii runga i te whakarea C ka hoatu e:
te k te taupū o te exp isoentropicansii runga i te whārite: 
| Hau | P1 (bar) | T1 (°C) | q' (kg/h) | q (kg/h) | (q'/q) x 100 |
|---|---|---|---|---|---|
| Methane | 12 | 50 | 1472 | 1466 | 100.4 |
| Methane | 23 | 200 | 2314 | 2267 | 102.1 |
| Tuhinga | 12 | 100 | 2261 | 2181 | 103.7 |
| Hexane | 12 | 178 | 3099 | 2740 | 113.1 |
| Hexane | 23 | 220 | 6519 | 5111 | 127.5 |
| Hepeke | 12 | 215 | 3232 | 2821 | 114.4 |
q'= te rerenga rere kua tatauhia me te k = Cp/Cv (20 °C, 1 atm)
q = te rere o te rere i tatau ki te k = (Cp/Cv) • (Z/Zp)
Ma te whakauru i te whakarea whakamatautau k o te rerenga rerenga haumarutanga, e whakaarohia ana e te ao te tino mahi o te rere o te paera, he whakarea haumaru o te 0.9 me te tauwehe whakakope Z1 mo te tino wai, ka tae ki te whakatakotoranga o te kohinga "E":
Ko te taupū isoentropic k ka taea te whakaatu penei:
![[2]](https://i0.wp.com/www.besa.it/wp-content/uploads/2022/06/Schermata-2022-06-30-alle-15.39.24.png?ssl=1)
Mo te hau pai, mo tera P x V / R x T =1 , ka whakaatuhia tera k he rite ki te ōwehenga Cp/Cv i waenga i nga wera motuhake i te pehanga me te rōrahi.
Mo te hau tino, k ka taea te whakaatu (tirohia te Apiti B) na:
![[3]](https://i0.wp.com/www.besa.it/wp-content/uploads/2022/07/Schermata-2022-06-30-alle-15.39.46.png?ssl=1)
i reira ko te Z te tauwehe compressibility i tautuhia e Z=P x V / R x T a ko Zp te "tauwehe compressibility take". A, no te tono tātai [3], e ai ki te kohinga "E", me arotake nga uara o Cp/Cv, Z me Zp i nga tikanga tuku P1 a T1.
Kua tautuhia te tauwehe compressibility Zp i roto i te tauira [4] hei:
![[3.1]](https://i0.wp.com/www.besa.it/wp-content/uploads/2022/07/Schermata-2022-06-30-alle-15.40.20.png?ssl=1)
Ka taea te whakaatu te tauwehe compressibility Z hei:
![[4]](https://i0.wp.com/www.besa.it/wp-content/uploads/2022/07/Schermata-2022-06-30-alle-15.40.29.png?ssl=1){kind=small}
me te rite, ka taea te whakaatu penei:
![[5]](https://i0.wp.com/www.besa.it/wp-content/uploads/2022/07/Schermata-2022-06-30-alle-15.40.36.png?ssl=1){kind=small}
ko nga uara o Z^0, Z^1, Zp^0, Zp^1 kua tabulahia ki te Apiti A hei mahi a Pr me Tr.
In [4] a [5], Ko te Ω te tauwehe acentric a Pitzer i tautuhia e:
![[10]](https://i0.wp.com/www.besa.it/wp-content/uploads/2022/07/Schermata-2022-06-30-alle-15.40.44.png?ssl=1){kind=small}
Ko te Pr^SAT ko te pehanga kohu whakaheke e rite ana ki te uara pāmahana whakaheke Tr=T/Tc=0,7. Ko te Apiti A e whakaatu ana i nga uara Ω o etahi wai. Ka taea hoki te tiki mai i te Z e Zp mai i te wharite wetewete o te ahua.
He tauira tau
Ka huri ki te tauira tau, me tatau tatou ki te tatau i te kaha tukunga o te reera haumaru i raro i nga tikanga e whai ake nei:
| Hau | n-Butano | |
| Te āhua taiao | kohu wera nui | |
| Te papatipu kiri | M | 58,119 |
| Whakaritea te pehanga | P | 19,78 bar |
| Te taumahatanga | 10 orau | |
| Te pāmahana wai | T | 400 K |
| Te whakarea o te Efflux | 0,9 | |
| Te diameter o te orifice | Do | 100 mm |
ka tukuna te pehanga tuku e:
mo te n-Butane: Tc=425,18 K me Pc=37,96 bar, kei a matou:
me te whakamahi i nga ripanga i te Tāpiritanga A, kei a matou:
Ma te mohio ki te rōrahi motuhake o te kohu i nga tikanga tuku (P1, T1) e rite ana ki te 0,01634 m^3/kg (0,0009498 m^3/g-mole), ka taea hoki te tatau Z mai i te:
Homai te ōwehenga o nga wera tauwhāiti i te pēhanga me te rōrahi tonu, i nga tikanga tuku (P1, T1), e rite ana ki te 1,36, mai i te tauira [3] kei a matou:
147060
Te tono tātai [1], i whakatauhia mo te tatauranga o te rerenga rere, kei a matou te uara rerenga rerenga o 147.060 kg / h.
174848
Mena i whakamahia e matou te uara o Cp/Cv i te 1 atm me te 20 °C, kua k = 1,19 mai i te tātai [1] he rerenga rerenga o 174.848 kg / h.
Ma tenei e arahi i a maatau whakanuia te tukunga kaha o te piha haumaru a tawhio noa 19 orau
WHAKATŪPATO:
Ko te hapa ka taea ma te tautapa i te uara Cp/Cv ki te k ka nui ake i tenei tauira.
NEKE 20%
Hei hoatu whakaaro, ko te ripanga e whai ake nei e whakaatu ana i nga reiti rere o te 18-mm te roa mo etahi atu waiwaro kukū, i tatauhia i roto i nga keehi e rua. I mahia nga tatauranga me te whakawhanake motuhakeped Pūmanawa.
| Hau | P1 (bar) | T1 (°C) | q' (kg/h) | q (kg/h) | (q'/q) x 100 |
|---|---|---|---|---|---|
| Methane | 12 | 50 | 1472 | 1466 | 100.4 |
| Methane | 23 | 200 | 2314 | 2267 | 102.1 |
| Tuhinga | 12 | 100 | 2261 | 2181 | 103.7 |
| Hexane | 12 | 178 | 3099 | 2740 | 113.1 |
| Hexane | 23 | 220 | 6519 | 5111 | 127.5 |
| Hepeke | 12 | 215 | 3232 | 2821 | 114.4 |
Kāore te pūmanawa e whakamahi tātai [4] [5] engari, timata mai i te whakarereke Redlich me Kwong whārite o te āhua, ka tātai i te uara o te taupū isoentropic ma te whakamahi i nga hononga thermodynamic.
