p-h problems

The correct value of W,D by compressor is ,,,,,,,, where WD= h2-h1

• 60 KJ/KG

• 40KJ/KG

• 50 KJ/KG

The correct value of HR by condenser is ............. where HR - h2-h3

• 180KJ/KG

• 190KJ/KG

• 200KJ/KG

The correct value of work done (W.D) by compressor is ............ where WD- h2-h1

• 60 KJ/KG

• 50 KJ/KG

• 70 KJ/ KG

The correct value of COP is ........................

where COP = h1-h4/h2-h1

• 3

• 2.5

• 2

The refrigeration effectby evaporator RE is ........................ where RE =h1- h4

• 140 KJ/KG

• 160 KJ/KG

• 150 KJ /KG

The correct value of COP is .........

where COP = h1-h4 /h2-h1

• 2

• 2.5

• 3

The correct value of heat rejecting by condenser HR is ........... where HR =

• 200 KJ/KG

• 150 KJ/KG

• 100 KJ /KG

The correct value of COP should be .................

• Less than  one

• More than one

• equal one

The numpr process of refrigeration cycle on p-h chart are ..........................

• four processes

• Five processes

• six processes

• 4

The correct value for (R.E) by evaporator is,,,,,,,, where RE= h1-h4

• 150 kj/kg

• 140 kj /kg

• 130 kj /kg