POST TEST C2 ALTERNATIVES TO HCFC PART 1

A refrigeration cycle is a series of continuous cycle operations. This cooling cycle is not only the cooling cycle for air conditioners but it is the same basic cycle for refrigerators in our homes. The following are the operational phases in the refrigeration cycle EXCEPT ……………….

Kitaran penyejukan ialah satu siri operasi kitaran berterusan. Kitaran penyejukan ini bukan sahaja kitaran penyejukan untuk penghawa dingin tetapi ia adalah kitaran asas yang sama untuk peti sejuk di rumah kita. Berikut adalah fasa operasi dalam kitaran penyejukan KECUALI ……………….

• A. vaporization

  A. pengewapan

• B. compression

  B. mampatan

• C. tension

  C. tegangan

• D. condensation

  D. kondensasi

"This material consists of hydrogen, chlorine, fluorine and carbon atoms, it is widely used in cooling, foam, aerosol and fire fighting systems. Material used to replace CFC in 1990" Name the gas referred to above.

“Bahan ini terdiri daripada atom-atom hidrogen, klorin, fluorin dan karbon, ia digunakan secara meluas di dalam sistem penyejukkan, foam, aerosol dan fire fighting. Bahan digunakan bagi mengantikan CFC pada tahun 1990”

Namakan gas yang dimaksudkan di atas.

• A. HC

  A. HC

• B. HFCs

  B. HFC

• C. HCFCs

  C. HCFC

• D. HFE Blend

  D. HFE Blend

What is the ODP (Ozone Potential) value for R22 and R134A refrigerants?

Apakah nilai ODP(Ozone Potential) bagi refrigerant R22 dan R134A?

• A. ODP R22 = 0.50 and ODP R134A = 1.00

  A. ODP R22 = 0.50 dan ODP R134A = 1.00

• B. ODP R22 = 0.055 and ODP R134A = 0.00

  B. ODP R22 = 0.055 dan ODP R134A = 0.00

• C. ODP R22 = 1.00 and ODP R134A = 1.00

  C. ODP R22 = 1.00 dan ODP R134A = 1.00

• D. ODP R22 = 0.00 and ODP R134A = 0.00

  D. ODP R22 = 0.00 dan ODP R134A = 0.00

Which one is NOT an HFC mixed refrigerant?

Yang manakah satu BUKAN refrigerant campuran HFC?

• A. R-22

  A. R-22

• B. R-404A

  B. R-404A

• C. R-407C

  C. R-407C

• D. R-507A

  D. R-507A

Among the following, choose a single type of refrigerant that does not change composition when it reaches the boiling temperature.

I. R22

II. R12

III. R134A

IV. R410a

Di antara berikut pilih jenis refrigerant yang tunggal dan tidak berubah komposisi apabila mencapai suhu mendidih.

I. R22

II. R12

III. R134A

IV. R410a

• A. I, II dan III

• B. I, III dan IV

• C. I, II dan IV

• D. II, III dan IV

The standard of Number Designation refrigerant was adopted from ASHRAE Standard 34. The number of atoms of Carbon, Chlorine, Fluorine and Hydrogen can be determined by few methods. Determine the number of Hydrogen, Chlorine, Fluorine, and Carbon in Refrigerant R134 by using the following method. (CLO1, C3)

 

                           i.          Method Rxyz [4 marks]

 

                          ii.          Method Add 90 to the designation number of refrigerants [4 marks]

                        iii.          Identify the refrigerant group of the R134 [2 marks]

Evaluate responses using AI:

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