Exam (elaborations)
ESCO LIGHT COMMERCIAL REFRIGERATION EXAM WITH ALL ANSWERS
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ESCO LIGHT COMMERCIAL REFRIGERATION EXAM WITH ALL ANSWERS
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ESCO LIGHT COMMERCIALREFRIGERATION EXAM WITH ALL
ANSWERS
In ba bdry btype b(direct bexpansion) bevaporator, bliquid brefrigerant bmust bboil baway
bas bclose bto bthe bend bof bthe bcoil bas bpossible bin border bto: b- bcorrect banswer-
The bdifference bbetween bthe btemperature bof bthe brefrigerant bboiling bin bthe
bevaporator band bthe btemperature bat btheevaporator boutlet bis bknown bas: b- bcorrect
banswer-
An bexpansion bdevice bthat bis bstuck bopen bwill bcause: b- bcorrect banswer-
When bmeasuring bevaporator bsuperheat bon ba bcommercial bsystem bthat bhas ba
blong bsuction bline, bthe bpressure breading bshould bbe btaken bat bthe: b- bcorrect
banswer-
Superheat bmeasurements bare bbest btaken: b- bcorrect banswer-
Atechnician bis bchecking bthe bsuperheat bon ba bmulti-circuit bevaporator band bfinds
bone bof bthe bcircuits bhas ba bsuperheat bthat bis bhigher bthan bthe bothers. bThis
bcould bbe bcaused bby: b- bcorrect banswer-
A bTEV bwith ban bexternal bequalizer bis bused bon: b- bcorrect banswer-
, Dry btype bevaporators boperate bmost befficiently bwith ba bsuperheat bsetting bof
bapproximately: b- bcorrect banswer-
An bevaporator bused bto bchill bliquids bsi boperating bwith ba bnormal bsuperheat
bsetting, bbut bthe bsystem bis bnot bcooling bthe bproduct bproperly. bWhich bof bthe
bfollowing bis bthe bmost blikely bcause? b- bcorrect banswer-
What btime binterval bis brequired bbetween beach bsuperheat badjustment? b- bcorrect
banswer-
Alow btemperature bevaporator bused bfor bcooling bspace bor bproduct brefrigeration: b-
bcorrect banswer-
Some bspecial bapplications buse baflooded bevaporator b(operated bfull bof
brefrigerant). bnI border bto bmaintain bthe bproper blevel bof bliquid brefrigerant, ba
type bmetering bdevice bis bused. b- bcorrect banswer-
A bproperly bfunctioning bcondenser bwill bfirst; b- bcorrect banswer-
The beffect bof ban binefficient bwater bcooled bcondenser bwill; b- bcorrect banswer-
The brefrigerant bcondensing btemperature bin ba bwater bcooled bcondenser bis
bnormally babout
higher bthan bthe bleaving bwater. b- bcorrect banswer-
The brefrigerant bin ban bair bcooled bcondenser bwill bnormally bcondense bat
bapproximately
higher btemperature bthan bthe bair bpassing bover bit. b- bcorrect banswer-
Workable bhead bpressure bduring bperiods bof blowambient btemperature bcan bbe
bachieved bby busing; b- bcorrect banswer-
Cooling btowers bthat bpass bair bover bwater bto bremove bsystem bheat bare blimited bin
bcapacity bby: b- bcorrect banswer-
Parallel bcompressors boften breferred bto bas ba brack bsystem bmay buse; b- bcorrect
banswer-
The bmajor bdifference bbetween ba bcooling btower band ban bevaporative bcondenser
bis: b- bcorrect banswer-
Multiple bcompressors bprovide: b- bcorrect banswer-
Adirty bevaporator band bsubsequent blow bevaporator bpressures bwill bcause: b-
bcorrect banswer-
he bthermostatic bexpansion bvalve b(TV) bmaintains ba bconstant__________ bin bthe
bevaporator. b- bcorrect banswer-
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