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38 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Coefficient of performance Cp |
A Ratio. NRE divided by HoC |
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Compression Ratio |
A Ratio. Absolute Discharge Pressure devided by Absolute Suction Pressure |
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Heat based on zero heat content at -40C -40F |
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Enthalpy Total |
Difference between 2 specific enthalpies |
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Entrop |
A measure of a change in a refrigerants molecular activity without a change in molecular structure |
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Heat of Compression HoC or H |
Heat gained by the work of compression. |
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Heat of Rejection HoR or H |
Heat rejected by a refrigeration system |
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Heat Transfer, Time Rate q |
The rate of heat exchange. Btu/hr |
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Heat Transfer, Total Mass. Q |
From mass times specific heat times Delta T. |
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Total Mass .m |
The measure of an object's weight which gives it inertia when moved. LB /SEC |
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Mass Flow Rate. W |
The time an amount of refrigerant in weight to pass a point lb/min |
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Net Refrigerant effect. NRE |
Heat absorbed or gained by a Refrigeration system. Btu/lb |
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Power P. |
Time rate of doing work. Hp or watts |
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Pressure p. |
Force per unit area. Psi |
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Temperature Absolute T |
Average level of molecular motion starts at zero molecular movement. R |
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Density p |
Lb/ft3 |
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Specific heat c |
The amount of heat in one unit of a substance per degree of temperature. Btu/lp. F |
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Specific Volume v |
The volume of a substance per unit mass. Ft3/lp |
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Volume flow rate Q |
The time an amount of refrigerant I volume takes to pass a point. Ft3/min |
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Volume, total V |
The space taken up by a solid, liquid or gas. Ft3 |
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7 formulas |
Enthalpy |
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NRE |
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Hoc |
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Heat of Rejection hor |
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Mass flow rate m |
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Volume flow rate v |
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Coefficient of performance cop |
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Compression ratio CR |
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PE Diagram |
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Critical point |
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3 region of PE Diagram |
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Defination of PE Diagram Data |
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Units of measurment. |
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Charles first law |
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Charles second law |
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Bernoulli law |
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Pascal law |
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Dalton's law |
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