Koelervakteorie N3 — Document

April 2021 — N3 — Koelervakteorie

N3 2021 Nated Engineering

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1.1Verskeie opsies word as moontlike antwoorde op die volgende vrae gegee. Kies die antwoord en skryf slegs die letter (A D\ langs die vraagnommer (1.1.1

1.1.5\ in die ANTWOORDBOEK neer.

1.1.1Indien die absolute druk 1 000 kPa is , w at is di

1.1.2Indien die lesing op 'n gewone drukmeter 700 kPa is at is di

1.1.3

1.1.4

1.1.5Indien 'n temperat ur lesing 322 K is

1.2Definieer die volgende term

1.2.1Versadigde damp (2\

1.2.2Spesifieke warmte kapasiteit (2\

1.3Teken 'n netjiese, benoemde skets an 'n vierrigting omkeerklep wat die vloei van koelmiddel na ver

2.1FIGUUR hier onder toon 'n prent van 'n termostati ese uitsitklep Bestudeer die prent en beantwoord die vrae

2.1.1Noem DRIE voordele van die termostatiese uitsit klep in FIGUUR 1. (6\

2.1.2t is die doel van die termostatiese uit sit klep

2.1oem die TWEE komponente wat betrokke is by die koppeling met die verkoelingstelsel

2.2Verduidelik die verskil tussen utomati ese uitsitklep

2.3Verduidelik die term diverse warmtelas (' miscellaneous heat load '\ (2\

2.4Noem VIER bronne van diverse warmtelas (4\ [20] 819018320

3.1die letter (A E\ langs die vraagnommer (

3.1.5\ in die ANTWOORDBOEK neer. KOLOM KOLOM

3.1.5Verdampingskondensor Vloeibare oorvoer verdamper Dompelverdamper ('f looded evaporator '\ Water

3.2Tabul eer DRIE voordele en DRIE nadele van die verdampings ondens at or (6\

3.3Beskryf kortliks die werk beginsel van die verdampingskondens at or in VRAAG

3.4Verduidelik DRIE doel witte van die drukre lklep wat in absorpsie eenhede

4.1Noem die waarskyn ike regstellende aksie v ir die volgende soorte foutiewe werking van 'n kondenseereenheid as die kompressor

4.1.1Verdamper se waaier werk nie

4.1.2Lae koelmiddellading ('l ow refrigerant charge '\

4.1Lae verdamperbelasting ('l ow evaporator load '\

4.1.4

4.2Teken 'n netjiese, benoemde skets van 'n hali fakkel kverklikker.

4.3

4.420

5.1

5.2FIGUUR hier onder toon 'n yskas/vrieskas kombinasie. Identif iseer die benoemde onderdele en k omponent

5.3Die termost at in FIGUUR hier bo is 'n normale tweepoolskakelaar

5.4Het komp onent F 'n weerstandslas of 'n induktiewe las? (1\

5.5Gee 'n rede vir jo u antwoord in VRAAG

5.4[20] TOT AL: 10020

Mark Allocation

Total100 marks

Sections20 + 20 + 20 + 20 + 20 = 100 marks

Paper information

TitleDocument

SubjectKoelervakteorie

LevelN3

Document typeQuestion paper

Year2021

MonthApril

Pages6

Downloads4

Examination context

Decade2020s

Years ago5y

SeasonAutumn (SH)

Start dayThursday

Exam periodApril 2021

Days since exam2,020

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