Exam (elaborations)
COMMERCIAL REFRIGERATION FINAL TEST WITH ALL ANSWERS 100- correct.
- Course
- Institution
COMMERCIAL REFRIGERATION FINAL TEST WITH ALL ANSWERS 100- correct.
[Show more]
Content preview
Light bCommercial bA/CStudy bonline bat
bhttps://quizlet.com/_a6vq2t
1. Condenser bfan-cycling bcontrols bhave bthe bsame
is bused bto
baction bas ba blow-pressure bcontrol, bexcept bit:
bcontrol bthe
2. A bsling bpsychrometer bis bused bto bmeasure bwet band bhigh bpressure.
bdry bbulb btemperatures. bThe bdifference bbetween
wet bbulb
bthe btwo breadings bis:
bdepres- bsion.
3. Some bcompressors bare bfitted bwith ban bunloading
bde- bvice bto:
provide
bvariable
bcapacity.
4. Compressor bnet boil bpressure bis bdetermined bby: oil bpump bdis-
charge
bpressure
bminus bthe
bsuction
bpressure.
5. A bcompressor bis boperating bwith ba bdischarge 5:1
bpressure bof b185.3 bpsig band ba bsuction bpressure bof
b25.3 bpsig. bThe bcompression bratio b(pumping bratio)
bis:
electroni
6. Which btype bof bmetering bdevice bcan bbe bused bto c bstep-
bmeter brefrigerant band bcontrol bsystem bpump bdown
motor
bwithout ba bliquid bline bsolenoid bvalve?
expansion
bvalve.
7. The bcapacity bof ba bcooling btower bdepends bon bthe: entering bair bwet
bulb btemperature.
8. When bthe bwet band bdry bbulb btemperatures bare
bthe bsame, bthe brelative bhumidity bwould bbe:
10. On bsplit
9. Refrigerant bin bthe bsuction bline bshould bbe bslightly bsystem
bsu- bperheated bin border bto: binstallations
, bthe bsuction
bline bshould
1 b/
, Light bCommercial bA/C
Study bonline bat
bbe bpitched btowards bthe bcompressor bat bleast:
bhttps://quizlet.com/_a6vq2t
100%
11. The bmost breliable band bsafest bmethod bof bfield
bcharging ba bblended brefrigerant binto ba bsystem bis
insure bliquid
bto bcharge:
brefrig- berant
bdoes bnot ben-
bter bthe
bcompres- bsor.
one binch bper
bten bfeet. b(1
bin/10 bft)
by bweighing bin
bthe bcorrect
bamount bof
brefrigerant.
2 b/
, Light bCommercial bA/C
Study bonline bat
bhttps://quizlet.com/_a6vq2t
12. Approximately bhow bmuch bairflow bis brequired b to
bacross bthe bevaporator bper bton bof bcooling bassure
bcapacity? bproper boil
breturn.
13. The bamount bof bheat babsorbed bin bthe
bevaporator bis bequal bto bthe bheat:
14. If ba bTEV bsensing bbulb blost bits bcharge, bwhat
beffect bwould bthis bhave bon bthe bair bconditioning
bsystem? bIt bwould bcause bthe:
15. A bdecrease bin bwater bflow, bwhen busing ba bwater
bcooled bcondenser:
16. High bcompressor boperating btemperatures bcan
bbe bcaused bby:
17. What bis bthe bpurpose bof ba bdistributor? bIt bevenly
bfeeds brefrigerant bto:
18. Upon binvestigation bof ba b"no bcooling" bcomplaint,
bthe btechnician bfinds bthat bthe bblower bmotor bof bthe
bair bhan- bdler bhas bno bopen bwindings. bOne bweek
bago, bthis bsame bunit bwas bfound bto bhave ba bbroken
bbelt bcaused bby ba bworn bdrive bpulley. bBoth bthe bbelt
band bpulley bwere breplaced bat bthat btime. bWhich bof
bthe bfollowing bshould bbe bdone bwhen bthe
btechnician breplaces bthe bmotor?
19. Over-night, bwith blower bthan bnormal bambient
btemper- batures, ban bair bconditioning bunit bhas bthe
bsuction bline biced bup bto bthe bcompressor. bWhat
bwould bbe bthe bmost bprobable bcause?
20. Depending bon bthe bapplication, bsuction blines bmust
bbe
3 b/
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller HIGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.09. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now