أسئلة عن الثلاجة المنزلية؟

نرجو الإجابة والمشاركة، والحل سيطرح قريباً بعد الردود

(1) What happens in the refrigerator, if there is
a) Ice at inlet capillary tube.

- …………………………………….……

b) Poor door gasket.

- …………………………………….……

c) Blown fuse.
- …………………………………….……

d) Hot foods are placed in cabinet.
- …………………………………….……

e) Cabinet not level.
- …………………………………….……

f) Sensing bulb of thermostat not in contact with the evaporator.
- …………………………………….……

g) Open cabinet flange heater.
- …………………………………….……
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(2) Choose the correct answer

a. What is the definition of refrigeration
• The addition of cooling

• The removal of heat

• The removal and relocation of heat

b. Name 3 main processes by which objects can become colder
• Radiation, Conduction, Convection

• Refrigeration, Air Conditioning, Absorption

• Evaporation, Condensation, Sublimation

c. The location of freezer in the top portion of a refrigerator result in
• Less noise in the system.

• Quick cooling of entire chamber.

• No adverse effect on environment.

d. If the refrigerator is not running on AC, the first thing to check is
• Incoming voltage.

• On/off switch .

• Circuit breaker .

e. The presence of frost on the cooling coils of the evaporator of a refrigeration system
• Acts as a insulator and decreases the heat transfer rate.

• Reduces the life of cooling coils.

• Makes the compressor run for comparatively short durations.

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(3) What is the equal temperature in Celsius scale and the Fahrenheit scale

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(4) What is the normal temperatures found inside the fresh food section and freezer section for a frost free fridge?
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(5) Why is your home refrigerator not cold but the freezer section is extremely cold
…………………………………….………………………………………….……
…………………………………….………………………………………….……
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[center]What happens in the refrigerator, if there is
a) Ice at inlet capillary tube.
- Reduction in freezing capacity.

b) Poor door gasket.
- Ice forming on the evaporator.

c) Blown fuse.
- Unit will not run.

d) Hot foods are placed in cabinet.
- Refrigerator cabinet too warm.

e) Cabinet not level.
- Noisy operation.

f) Sensing bulb of thermostat not in contact with the evaporator.
- Unit runs continuously, and temperature is normal.

g) Open cabinet flange heater.
Door sweats. ]

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Choose the correct answer

a. What is the definition of refrigeration

• The removal of heat

b. Name 3 main processes by which objects can become colder

• Refrigeration, Air Conditioning, Absorption

c. The location of freezer in the top portion of a refrigerator result in

• Quick cooling of entire chamber.

d. If the refrigerator is not running on AC, the first thing to check is
• Incoming voltage.

e. The presence of frost on the cooling coils of the evaporator of a refrigeration system
• Acts as a insulator and decreases the heat transfer rate.

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What is the equal temperature in Celsius scale and the Fahrenheit scale?

F = (9/5 C) + 32
F – 32 = 9/5 C
5F-160 = 9 C
F=C
160-= 9C-5C
C=-40
F=-40

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What is the normal temperatures found inside the fresh food section and freezer section for a frost free fridge?
- The fresh food section should be approx. 40 F or 4 C in the middle of the fresh food section.
- The freezer section should be 0 to 5 F or -18 to -15 C.
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(Why is your home refrigerator not cold but the freezer section is extremely cold?
- Possible cause: vents between fridge and freezer sections are clogged with ice.

جزاك الله خيراًthank you very much

كيف أعرف ان الثلاجة تحتاج لتعبئة فريون

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