The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

Refrigeration and Air Conditioning
The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

(h2 - hA)/ (h1 - h2)

(hA - h2)/ (h1 - h2)

(hA - h1)/ (h2 - h1)

(h1 - h2)/ (hA - h2)

(h2 - hA)/ (h1 - h2)

(hA - h2)/ (h1 - h2)

(hA - h1)/ (h2 - h1)

(h1 - h2)/ (hA - h2)

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Refrigeration and Air Conditioning
Which of the following statement is correct for ammonia as a refrigerant?

It is toxic to mucous membranes.

All of these

It requires large displacement per TR compared to fluoro carbons.

It reacts with copper and its alloys.

It is toxic to mucous membranes.

All of these

It requires large displacement per TR compared to fluoro carbons.

It reacts with copper and its alloys.

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid

Before entering the expansion valve

After passing through the expansion or throttle valve

After passing through the condenser

Before passing through the condenser

Before entering the expansion valve

After passing through the expansion or throttle valve

After passing through the condenser

Before passing through the condenser

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Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

remains same

depends on other factors

increases

decreases

remains same

depends on other factors

increases

decreases

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Refrigeration and Air Conditioning
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Absorber

Evaporator

Condenser

None of these

Absorber

Evaporator

Condenser

None of these

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Refrigeration and Air Conditioning
A good refrigerant should have

High specific volume and high latent heat of vaporisation

Low C.O.P. and low freezing point

High latent heat of vaporisation and low freezing point

High operating pressures and low freezing point

High specific volume and high latent heat of vaporisation

Low C.O.P. and low freezing point

High latent heat of vaporisation and low freezing point

High operating pressures and low freezing point

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

Refrigeration and Air Conditioning Which of the following statement is correct for ammonia as a refrigerant?

Refrigeration and Air Conditioning In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid

Refrigeration and Air Conditioning At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

Refrigeration and Air Conditioning In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Refrigeration and Air Conditioning A good refrigerant should have

Refrigeration and Air Conditioning
The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

Refrigeration and Air Conditioning
Which of the following statement is correct for ammonia as a refrigerant?

Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid

Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

Refrigeration and Air Conditioning
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Refrigeration and Air Conditioning
A good refrigerant should have