TITLE.PM5

758 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-3.pm5 p h 4 3 1 2 Condensation 3 ′ Evaporation Throttling Compression Heat ex ...

REFRIGERATION CYCLES 759 dharm \M-therm\Th14-3.pm5 Work done on compressor = 4.812 (214 – 182.07) = 153.65 kJ/min = 2.56 kW Actu ...

760 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-3.pm5 Fig. 14.35 = 0.6854 + 0.733 loge T 3 303 F HG I KJ ∴ loge T^3 303 F HG ...

REFRIGERATION CYCLES 761 dharm \M-therm\Th14-4.pm5 (iii)Theoretical piston displacement per minute = Mass flow/min. × specific v ...

762 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 p (Pressure) h (Enthalpy) (^51315971790) kJ/kg (^12) – 12°C Evaporation ...

REFRIGERATION CYCLES 763 dharm \M-therm\Th14-4.pm5 (v)C.O.P. (vi)Heat removed through condenser. (vii)Theoretical bore and strok ...

764 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 (vi)Heat removed through the condenser = m (h 3 – h 4 ) = 27.6 (664 – 4 ...

REFRIGERATION CYCLES 765 dharm \M-therm\Th14-4.pm5 group have outstanding merits over the other group’s refrigerants, therefore ...

766 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 R-1130 — Dichloroethylene (C 2 H 4 Cl 2 ) R-1150 — Ethylene (C 3 H 6 ) ...

REFRIGERATION CYCLES 767 dharm \M-therm\Th14-4.pm5 Condenser and evaporator pressures. The evaporating pressure should be as nea ...

768 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 Table 14.1. C.O.P. of some important refrigerants S. No. Refrigerant C. ...

REFRIGERATION CYCLES 769 dharm \M-therm\Th14-4.pm5 (vi) Low weight of liquid circulated per tonne of refrigeration. (vii) High e ...

770 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 Methyl Chloride (CH 3 Cl) Properties : (i) It is a colourless liquid w ...

REFRIGERATION CYCLES 771 dharm \M-therm\Th14-4.pm5 separators must be incorporated to return the oil from the evaporator when th ...

772 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 The various parts of a simple vapour compression cycle are : Compresso ...

REFRIGERATION CYCLES 773 dharm \M-therm\Th14-4.pm5 The function of a ...... is to remove the vapour from the evaporator and to ...

774 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 State merits and demerits of ‘Vapour compression system’ over ‘Air ref ...

REFRIGERATION CYCLES 775 dharm \M-therm\Th14-4.pm5 An ammonia vapour-compression refrigerator operates between an evaporator pr ...

776 ENGINEERING THERMODYNAMICS dharm \M-therm\Th14-4.pm5 The ice is to be formed at 0°C from water at 20°C and 6 kg of ammonia i ...

REFRIGERATION CYCLES 777 dharm \M-therm\Th14-4.pm5 Take : Specific enthalpy of fusion of ice = 336 kJ/kg Specific heat of water ...