Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1 | Calculate heat energy with and without phase change | 1.1 | Enthalpy is applied to heat mixture calculations with or without phase change |
1.2 | Enthalpy is applied to calculate resultant conditions of hot wells involving multiple returns |
1.3 | Steam conditions in a system when using throttling devices and separators are calculated |
1.4 | Entropy is distinguished from enthalpy |
1.5 | Entropy values are determined from standard tables |
2 | Analyse change of phase and state diagrams | 2.1 | Tables and/or diagrams are used to find enthalpy and entropy values for liquid, part liquid-part vapour and vapour states |
2.2 | Carnot cycle is outlined |
2.3 | Rankine cycle is outlined |
2.4 | Isentropic efficiency is explained |
2.5 | Problems are solved involving the efficiency of steam turbines operating in the Rankine cycle |
3 | Apply Dalton’s law of partial pressures to steam condensers | 3.1 | Dalton’s Law is applied to calculate air and condensate extraction from condensers |
3.2 | Problems are solved involving cooling water mass flow and cooling water pump work |
4 | Apply chemical equations for complete and incomplete combustion | 4.1 | Atomic and molecular weights and kilogram-mol are explained |
4.2 | Calorific value of a fuel is calculated by chemical formula |
4.3 | Mass of air required for stoichiometric combustion is calculated by gravimetric and volumetric analysis |
4.4 | Air fuel ratio is determined when supplied with composition of fuel and exhaust gas analysis |
5 | Apply gas laws to analyse internal combustion engine efficiencies | 5.1 | Universal gas constant form AVOGADRO S hypothesis is determined |
5.2 | Heat transfer is calculated for constant volume and constant pressure processes |
5.3 | First law of thermodynamics is applied to thermodynamic processes in a closed system |
5.4 | Second law of thermodynamics is applied to find thermal efficiency of Carnot cycle |
5.5 | Mathematical formula is applied to solve problems related to ideal constant volume air standard cycle |
5.6 | Mathematical formula is applied to solve problems related to diesel and dual cycles |
6 | Calculate performance of internal combustion and gas turbine engines | 6.1 | P/V and out of phase engine indicator diagrams are analysed |
6.2 | Work, power, mean effective pressure and thermal efficiency of internal combustion engine cycles is calculated |
6.3 | Heat transfer to jacket cooling systems is calculated |
6.4 | Open and closed systems for gas turbines are outlined |
6.5 | Temperature/entropy diagrams are applied to illustrate gas turbine cycles |
6.6 | Power, isentropic efficiencies, thermal efficiency, work and fuel consumption for gas turbine cycles is calculated |
6.7 | Methods to increase efficiency of gas turbines are specified |
6.8 | Reheaters and intercoolers and how they improve efficiency is explained |
7 | Analyse air compressor performance | 7.1 | Compressor types are classified |
7.2 | Volumetric efficiency at free air conditions is explained |
7.3 | Work is calculated for isothermal and adiabatic compression, and effect of clearance for reciprocating compressor |
7.4 | Pressure ratio for compressor types is analysed |
7.5 | Problems are solved relating to multi-staging and intercooling |
7.6 | Heat transfer to air or cooling water from an air compressor is calculated |
7.7 | Formula to calculate work and efficiency of centrifugal compressors is derived |
8 | Analyse vapour compression refrigeration cycles | 8.1 | Design parameters for a vapour compression cycle are explained |
8.2 | Pressure/enthalpy diagram is prepared for a refrigeration cycle |
8.3 | Heat rejected, work done and coefficient of performance (COP) for a basic cycle is calculated |
8.4 | Effect of sub cooling and superheating is shown on a temperature/entropy diagram |
8.5 | COP is calculated with evaporators operating at two different pressures |
9 | Apply psychrometric principles to solve air conditioning problems | 9.1 | Comfort conditions for air conditioning systems are defined |
9.2 | Key parameters used in defining air condition are illustrated on a psychrometric chart |
9.3 | Cooling loads are calculated |
9.4 | Problems associated with air delivering and distribution methods are analysed |
9.5 | Methods of controlling noise and vibration in air conditioning systems are analysed |
10 | Analyse different methods of heat transfer | 10.1 | Heat flow through composite divisions is calculated |
10.2 | Insulation dimensions and interface temperatures are determined |
10.3 | Problems relating to radiated energy are solved by applying Stefan-Boltzmann Law |
10.4 | Problems in heat exchangers are solved by applying log mean temperature difference |
10.5 | Relative efficiency of contra-flow heat exchange is determined |