DriSteem Vapor-Logic Guía para resolver problemas descargar pdf (Pagina 83)

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Table 79-1:

Multitank priority groups application example

Priority

group Assignment Description Application considerations

0Trim

t 1SPWJEFTIVNJEJGJDBUJPOMPBEiUISPUUMJOHwUIJTVOJUTFFTUIFTNBMMDIBOHFTBTEFNBOE

changes.

t (FOFSBMMZUIJTTIPVMECFPOFUBOLBOEJUTIPVMECFSFMBUJWFMZTNBMM

t (FOFSBMMZUIJTUBOLTIPVMECFBO443DPOUSPMMFEFMFDUSJDSFTJTUJWFVOJU

An SSR-controlled electric

resistive unit will provide the best

control.

1 Load

t $BSSJFTUIFCVMLPGUIFMPBETIPVMECFUIFNPTUDPTUFGGFDUJWFGVFMTPVSDF

t 0OMZTFFTMBSHFTUFQDIBOHFTJGBUSJNUBOLJTVTFE

GTS and STS are the most cost

effective, but any unit can be

used.

2Peak

t .BLFTVQUIFEFNBOEOPUNFUCZUSJNMPBE

t %PFTOPUSVOPGUFOCFDBVTFJUJTOFFEFEJOPOMZUIFNPTUEFNBOEJOHTJUVBUJPOT

t #FDBVTFJUEPFTOPUSVOGSFRVFOUMZNBLJOHGVFMDPTUMFTTPGBOJTTVFUIJTJTBHPPE

assignment for a lower-up-front-cost humidifier.

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Electric resistive are the most cost

effective (any unit can be used).

3 Redundant

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t 5IJTUBOLXJMMPOMZSVOXIFOBUSJNMPBEPSQFBLVOJUJTTIVUEPXOGPSTFSWJDFPSBMBSN

conditions and the remaining trim, load, and peak tanks cannot meet demand.

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See Note 1 below.

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will not need to bring down the master controller to service it.

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most cost-effective up front.

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factor.

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Notes:

1. If protection is required against multiple tanks being offline at the same time, the redundant tank should be at least as large as the sum of the X largest tanks

where X is the number of tanks for which protection is desired.

2. From a fuel cost standpoint, electric should have the lowest priority. It should run last and the least.

3. From an energy standpoint, GTS generally has the lowest operating cost.

4. When calculating energy, consider heat loss from distribution and piping of steam.

5. Humidifiers within a priority group are load leveled.

6. Humidifiers within a group should have the same energy source.

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Operation

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 103 104

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DriSteem Vapor-Logic Guía para resolver problemas Pagina 83

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