Excuse me, what are the subjects that HVAC professional public equipment engineers take in the basic examination and professional examination respectively? What are the problems?

Certified Public Equipment Engineer (HVAC) Qualification Examination

Basic examination outline

First, advanced mathematics.

1. Analytic geometry of space

Quadratic surface space curve of vector algebra straight line plane cylinder revolution surface

2. Calculus

Limit continuous derivative, differential partial derivative, total differential derivative and differential application

3. Integral

Indefinite integral definite integral generalized integral double integral triple integral plane curve integral integration application

4. Infinite series

Series power series Taylor series Fourier series

5. Ordinary differential equations

Separable variable equation first-order linear equation reducible equation constant coefficient linear equation

6. Probability and mathematical statistics

Random events and probability distribution of one-dimensional random variables and basic concepts of mathematical statistics parameter estimation hypothesis test variance analysis univariate regression analysis

7. Vector analysis

8. Linear Algebra

Quadratic matrix of n-dimensional vector linear equations with eigenvalues and eigenvectors of determinant matrix

Second, general physics.

1. Thermal

Statistical interpretation of pressure and temperature of ideal gas state equation; Energy is divided according to the principle of freedom; Average collision number and average Maxwell velocity distribution law of internal energy in ideal gas; The first thermodynamic law of work and heat energy and its application in the equivalent process of ideal gas and adiabatic process: the second thermodynamic law of heat engine efficiency of gas circulation process and its statistical significance: entropy of reversible process and irreversible process.

2. Wave science

Generation and Propagation of Mechanical Waves Simple Harmonic Expression Wave Energy Standing Wave Velocity Ultrasonic Infrasound Doppler Effect

3. Optics

Acquisition of coherent light Young's double-slit interference optical path Thin film interference Michael interferometer Resolution of huygens-fresnel principle single-slit diffraction optical instrument Brewster's law birefringence phenomenon of X-ray diffraction light and polarized light Artificial birefringence of interference polarized light and its application

Third, general chemistry.

1. Material structure and material state

Distribution of extranuclear electrons: electronic structure of atoms and ions, concepts of atomic orbitals and electron clouds, characteristics and types of ionic bonds, molecular structure, hybrid orbitals and molecular space configurations, law of intermolecular force and hydrogen bond partial pressure between polar molecules and nonpolar molecules, and relationship between types of vaporized thermal crystals and properties of substances for calculating the boiling point of liquid vapor pressure.

Step 2: Solution

Solution concentration and calculation universality of non-electrolyte dilute solution and calculation of osmotic pressure Concept and calculation of ionization constant of electrolyte solution ionization equilibrium The same ion effect and ion product and PH value of buffer solution Concept and calculation of solubility product constant of water and salt hydrolysis equilibrium and solution acid-base multiphase ion equilibrium

3. Periodic Table

The relationship between periodic table structure, periodic family atomic structure and periodic table; Acid-base gradient of elemental oxides and their hydrates

4. Chemical reaction equation Chemical reaction rate and chemical equilibrium

Writing of Evil Chemical Reaction Equation and Calculation of Reaction Heat Concept Expression Method of Thermochemical Reaction Equation Influence of Concentration and Temperature on Reaction Rate, Rate Constant and Activation Energy of Reaction Series Characteristics and Expression of Equilibrium Constant of Catalyst Concept, Principle of Chemical Equilibrium Movement, Calculation of Pressure Entropy and Judgment of Chemical Reaction Direction

5. Redox and electrochemistry

Compilation of redox reaction equation of oxidant and reductant, composition and symbol of Nernst equation of standard electrode potential for balancing primary battery electrode reaction and battery reaction, application of electrode potential electrolysis and metal corrosion.

6. Organic Chemistry

Characteristics, classification and nomenclature of organic compounds Important chemical reactions of functional groups and molecular structures of organic compounds: addition, substitution, elimination, oxidation, addition, polymerization and polycondensation. Molecular formulas, properties and uses of typical organic compounds: methane acetylene, benzene, toluene, ethanol, phenol, acetaldehyde, ethyl acetate, ethylamine, aniline, polyvinyl chloride, polyacrylate engineering plastics (ABS), rubber and nylon.

Fourth, theoretical mechanics.

1. Static

Axiomatic stress analysis of force-constrained statics balancing rigid body; torque force versus point torque force versus axis torque couple theoretical force system simplifies balancing sliding friction; friction angle self-locking main vector equilibrium system (including plane statically indeterminate truss)-soil torque force system considers sliding friction.

2. kinematics

Motion equation of points, trajectory speed and acceleration, translation of rigid body, rotation of fixed axis of rigid body, angular velocity and angular acceleration, velocity and acceleration of any point in rigid body.

3. Mechanics

Fundamental Laws of Dynamics Momentum Impulse Momentum Theorem Momentum Conservation Condition Centroid Motion Theorem Momentum Conservation Condition Momentum Conservation Condition Momentum Conservation Condition Momentum Conservation Condition Momentum Conservation Condition Rigid Body Fixed Axis Rotational Inertia Rotational Differential Equation Rotational Radius Parallel Axis Rotational Inertia Theorem Work Kinetic Energy Potential Kinetic Energy Conservation Theorem Inertia Force Rigid Simplify Object Inertia Force System D'Alembert Principle Linear Vibration Differential Equation Vibration Periodic Frequency and Amplitude Constraint Degree of Freedom Generalized Coordinates Virtual Displacement Ideal Constraint Virtual Displacement Principle

Verb (abbreviation of verb) mechanics of materials

1. Axial force and axial force, stress intensity conditions on cross section and inclined cross section of tension-compression bar, Hooke's law and displacement calculation, strain energy calculation.

2. Practical calculation of shear and extrusion-interaction between Hooke's shear law and shear stress.

3. Torque calculation and torque diagram of external couple torque; Calculation of torsional shear stress and strength condition of circular shaft: calculation of torsional angle and torsional strain energy under stiffness condition.

4. Static Moment and Centroid Moment of Inertia and Inertia Product Parallel Axis Movement Formula Centroid Principal Moment of Inertia

5. The differential relationship between the shear force diagram and the bending moment diagram of the beam's internal force equation, the distribution of load, shear force and bending moment, the conditions of normal stress intensity and shear stress intensity, the concept of the reasonable bending center of the beam, integration method, superposition method and Descartes' second theorem.

6. Numerical method and graphic method of plane stress state analysis are four commonly used strength theories: generalized Hooke's law of principal stress and maximum shear stress under point stress state.

7. Oblique bending, eccentric compression (or stretching), tension bending or combination of pressure bending and torsion bending.

8. The critical force formula of slender compression bar The application scope of Euler formula The general diagram of critical stress and the stability checking of empirical formula compression bar.

Six, fluid mechanics

1. Main physical properties of fluid

2. Hydrostatic

The concept of hydrostatic pressure; Distribution law of hydrostatic pressure under gravity; Calculation of total pressure.

3. Fundamentals of fluid dynamics

The concept of flow, the total flow analysis of fluid motion, the continuity equation of constant total flow, the energy equation and the momentum equation are described with the flow field as the object.

4. Flow resistance and head loss

Characteristics of laminar flow and turbulent flow in two flow patterns of actual fluid-laminar flow and turbulent flow in a circular tube: head loss along the way and local head loss; Basic concept of boundary layer and flow resistance.

5. The orifice plate and nozzle flow out of the pipeline at constant pressure.

6. Constant and uniform flow in open channel

7. Seepage law wells and water collection corridors

8. Similarity principle and dimensional analysis

9. Measure fluid motion parameters (flow rate, flow rate and pressure).

Seven. Computer Application Fundamentals

1. Computer basics

Composition of hardware and functional software and conversion of functional number system; Basic knowledge of Windows operating system, system startup related directories, files, disks and other operating network functions Note: Based on Windows98.

2. Computer programming language

Program structure and basic provisions Data variable array pointer assignment statement input and output statement transfer statement conditional statement selection statement loop statement function subroutine (or process) sequence file Note: In view of the current situation, FORTRAN language is adopted temporarily.

Eight, electrical and electronic technology

1. Electric and magnetic fields

Coulomb's Law Gauss's Law Loop Law Electromagnetic Induction Law

2.DC circuit

Ohm's law, Kirchhoff's law, superposition principle and Davenan's theorem.

3. Sinusoidal AC circuit

The three elements of sine quantity are effective complex impedance, calculated power and power factor of single-phase and three-phase circuits, and common sense of safe electricity use in series-parallel resonance.

4. Three-element analysis method for transient process of 4.RC and RL circuits

5. Transformers and motors

Voltage, current and impedance transformation relay-contactor control circuit of transformer is often used in three-phase asynchronous motor.

6. Diodes and rectifiers, filters and voltage stabilizing circuits

7. Triode and single-tube amplifier circuit

8. Operational amplifier

Proportional addition, subtraction and integration operation circuit composed of ideal operational amplifier

9. Doors and triggers

RS, d and JK flip-flops of basic gate circuits

Nine, engineering economy

1. Cash flow composition and capital equivalence calculation

Cash flow, investment, depreciation of assets, operating cost, sales income and profit, common formulas for calculating the equivalence of major taxes involved in engineering project investment and the usage of compound interest coefficient table.

2. Evaluation methods and parameters of investment economic effect

Net present value, internal rate of return, net annual value, present value, annual value difference, internal rate of return, investment payback period, benchmark discount rate, comparison and selection of equal-life and unequal-life alternatives.

3. Uncertainty analysis

Break-even analysis break-even point fixed cost variable cost single factor sensitivity analysis sensitive factors

4. Financial evaluation of investment projects

The basic contents of the feasibility study of industrial investment projects: the objectives and work contents of financial evaluation of investment projects; Profitability analysis; The main ways to raise funds; The cost of capital and the main ways of debt repayment; Basic financial statements; The economic effect of the total investment and the economic effect of its own funds; Calculation of financial impact of all investment cash flow statement and self-owned capital cash flow statement; Characteristics of financial evaluation of reconstruction, expansion and technological transformation investment projects (newer projects)

5. Value engineering

Concept, content and implementation steps of value engineering: functional analysis

X. thermal engineering (engineering thermodynamics, heat transfer)

1. Basic concepts

Thermodynamic system state equilibrium state parameters state axiom state equation thermodynamic parameters and coordinate diagram work and thermothermodynamic process of thermodynamic cycle unit system

2. Quasi-static process

Reversible process and irreversible process

3. The first law of thermodynamics

The expression of the first law of thermodynamics in open system and closed system The energy equation of steady flow can be stored and applied.

4. Gas properties

Ideal gas model and its equation of state Actual gas model and its equation of state Comparison of critical parameters of compressibility factor State and its law Properties of ideal gas mixed with specific heat

5. Basic thermodynamic process of ideal gas and gas compression

Constant Pressure, Constant Volume, Constant Temperature and Variable Adiabatic Process Gas Compression Shaft Working Gap Multipole Compression and Intermediate Cooling

6. The second law of thermodynamics

The essence and expression of the second law of thermodynamics; the principle of entropy increase of Carnot cycle and Carnot theorem entropy isolated system

7. Water vapor and humid air

Evaporation, condensation, boiling, vaporization, constant pressure generation process, water vapor diagram, basic thermodynamic process of water vapor, wet air properties, wet air enthalpy and wet diagram, basic thermodynamic process of wet air.

8. Flow of gas and steam

Basic characteristics and basic equations of nozzle and diffuser flow; Critical adiabatic throttling of velocity, sound velocity and flow rate

9. Power cycle

Rankine cycle regeneration and reheat cycle thermoelectric cycle internal combustion engine cycle

10. Refrigeration cycle

Air compression refrigeration cycle vapor compression refrigeration cycle absorption refrigeration cycle heat pump gas liquefaction

1 1. Theoretical basis of heat conduction

Basic concepts of heat conduction: temperature field, temperature gradient, Fourier law, thermal conductivity, and single-valued conditions of heat conduction process of heat conduction differential equation.

12. Stable heat conduction

Through the heat conduction of single flat plate wall and composite flat plate wall, through the critical insulation diameter of single cylinder wall and composite cylinder wall, through the heat conduction efficiency of rib wall, through the heat conduction of contact surface, two-dimensional steady heat conduction problem

13. Unstable heat conduction

Characteristics of Unsteady Heat Conduction Process Unsteady Heat Conduction under Convective Heat Transfer Boundary Conditions; General Parameter Method of Nome Atlas Unsteady Heat Conduction under Constant Heat Flow Boundary Conditions

14. Numerical solution of heat conduction problem

Numerical calculation of heat conduction problem based on the principle of finite difference method: establishment of node equation; Numerical calculation of unsteady heat conduction problems based on node equations: explicit difference scheme and its stability implicit difference scheme.

15. Convective heat transfer analysis

Convection heat transfer process and its influencing factors Convection heat transfer differential equation Convection heat transfer differential equation Flow boundary layer Thermal boundary layer heat transfer differential equation and its solution Boundary layer heat transfer integral equation and its solution Physical similarity of momentum transfer and heat transfer Basic concept Similarity principle Experimental data processing method

16. Convective heat transfer and criterion equation of single-phase fluid

Forced flow heat transfer in tube, swept tube flow heat transfer, natural convection heat transfer, mixed flow heat transfer of natural convection and forced convection heat transfer.

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Basic characteristics and calculation of condensation heat transfer of condensation heat transfer film Factors affecting condensation heat transfer of film and measures to strengthen heat transfer Boiling heat transfer Saturation boiling process curve Calculation of bubble boiling heat transfer in large space and bubble boiling heat transfer enhancement

18. Basic law of thermal radiation

Planck's Law of Radiation Intensity and Radiation Force Stephen Boltzmann's Law Lambert Cosine Law Kirchhoff's Law

19. Calculation of radiation heat transfer

How to determine the radiation heat transfer angle coefficient between black surfaces; Angular coefficient and spatial thermal resistance; Radiation heat transfer between ash surfaces: effective radiation surface thermal resistance; Gas radiation characteristics of heat shield: gas absorption law; Emissivity and absorption rate of gas; Radiative heat transfer between gas and shell: solar radiation.

20. Heat transfer and heat exchanger

Heat transfer calculation when rib wall heat transfer is combined with heat transfer; Weakening and strengthening of heat transfer; Calculation of average temperature difference efficiency-heat transfer unit number heat exchanger

XI。 Engineering fluid mechanics, pumps and fans

1. Fluid dynamics

Research methods of fluid motion: motion equations of ideal fluid and unsteady fluid; Equation of motion of real fluid; Bernoulli equation and its application conditions.

2. Similarity principle and model experiment method

Three Theorems Equation of Concept Similarity and Research Method of Physical Phenomena Similarity by Dimensional Analysis Method of Hydrodynamic Model Experimental Data Processing Method

3. Flow resistance and energy loss

Classification of laminar and turbulent flow resistance; Velocity distribution of laminar and turbulent flow in a circular tube: calculation of resistance coefficient of laminar and turbulent flow: causes and calculation methods of local resistance; Measures to reduce local resistance

4. Pipeline calculation

Calculation of simple pipeline calculation of series pipeline calculation of parallel pipeline

5. Specific traffic analysis

Simple flow analysis of the concepts of potential function and flow function of cylindrical velocimeter General characteristics of turbulent jet special jet

6. The concept of pressure wave propagation and sound velocity of gas jet.

Basic equation of one-dimensional steady flow of compressible fluid Characteristics of conical nozzle and Laval tube Performance of actual nozzle

7. Matching of pumps and fans with network system

Operating curve of pump and fan pipe network system Working point of pump and fan Working condition adjustment of centrifugal pump or fan Selection of centrifugal pump or fan Cavitation installation requirements of centrifugal pump or fan

Twelve. automation

1. General concepts of automatic control and automatic control system

The basic meaning of "control engineering" information transmission feedback and feedback control open-loop and closed-loop control systems constitute the classification and basic requirements of control systems.

2. Mathematical model of control system

Characteristics of each link of control system Establishment and solution of differential equation of control system Laplace transform and inverse transform transfer function and its block diagram

3. Analysis and design of linear system

Basic regulation law and realization method First-order transient response and second-order transient response frequency characteristics of control system Basic concepts Expression method of frequency characteristics Influence of regulator characteristics on regulation quality Design method of second-order system

4. The stability of the control system and the adjustment performance of the object.

The relationship between the basic concept of stability and the root of characteristic equation; Adjustment performance index of algebraic stability criterion object

5. Master the error analysis of the control system.

Error and steady-state error system type and error degree static error coefficient

6. Synthesis and sum correction of control system

The concept of correction series correction device relay adjustment system (nonlinear system) and the forms and characteristics of correction: position constant speed adjustment system, double position adjustment system with correction device and position constant speed adjustment system with correction device.

Thirteen. Thermal testing technology

1. Basic knowledge of measurement technology

Measurement accuracy error direct measurement indirect measurement equal accuracy measurement unequal accuracy measurement measurement range measurement accuracy stability static characteristics dynamic characteristics sensor transmission channel converter

2. Temperature measurement

Thermodynamic Thermometer International Practical Thermometer centigrade scale Fahrenheit Thermometer Thermoelectric Material Thermoelectric Effect Expansion Effect Thermometry Principle and Its Application Thermoelectric Circuit Characteristics and Theoretical Thermocouple Structure and Usage; Principle of Thermoelectric Resistance Temperature Measurement and Usage of Common Materials and Components Monochromatic Radiation Thermometer Panchromatic Radiation Thermometer Electric Temperature Transmitter Pneumatic Temperature Transmitter Temperature Measurement Arrangement Technology

3. Humidity measurement

Measurement principle of dry and wet bulb thermometer Electrical measurement and signal transmission sensing of dry and wet bulb Photoelectric dew point hygrometer Lithium chloride resistance dew point hygrometer Ceramic resistance capacitance hygrometer Hair film hygrometer Moisture measurement arrangement technology

4. Pressure measurement

Liquid column pressure gauge piston pressure gauge spring tube pressure gauge diaphragm pressure gauge bellows pressure gauge piezoelectric pressure gauge resistance strain sensor capacitance sensor inductance sensor Hall strain sensor pressure instrument selection and installation.

5. Flow measurement

Measuring principle and structure of mechanical anemometer measuring principle and structure of hot-wire anemometer L-shaped dynamic pressure tube cylindrical three-hole velocimeter Layout technology of three-tube velocimeter for measuring speed.

6. Flow measurement

The principle, measuring range, types and usage of throttling devices, volume flow measurement and other flowmeter arrangement technologies of measuring flow by throttling method.

7. Liquid level measurement

Direct reading liquid level pressure method, liquid level buoyancy method, liquid level capacitance method, liquid level ultrasonic method, arrangement of liquid level measurement and error elimination method.

8. Heat flow measurement

Classification and use of heat flow meters, arrangement and use of heat flow meters.

9. Error and data processing

The distribution law of error function indicates the average value, variance, standard error, significant number and measurement result of direct measurement, the optimal value, standard error, error propagation theory, small error principle, error distribution combination measurement principle, least square method, error empirical formula method of combination measurement, regression analysis of correlation coefficient, significance test and analysis of negligence error processing system, error processing method and comprehensive law of eliminating method error.

Fourteen machinery foundation

1. General principles and procedures of mechanical design, calculation criteria of mechanical parts, allowable stress and safety factor.

2. Motion diagram of motion pair and its classified planar mechanism The degree of freedom of planar mechanism and its conditions for determining motion.

3. Basic types of hinged four-bar mechanism and conditions for existence of crank. Development of hinged four-bar mechanism

4. Basic types and applications of profile curves of disk cams with translating followers.

5. Main parameters of thread and stress analysis of common types of thread pairs, efficiency and strength calculation of basic types of self-locking thread connection. Several problems in the design of threaded connection.

6. Working condition analysis of belt drive: main parameters and selection of common V-belt drive: calculation of pulley material and structure; Tension and maintenance of belt drive.

7. Name and size of spur gear parts Correct meshing conditions and continuous transmission conditions of involute gear Strength calculation of spur gear Force analysis of helical cylindrical gear Transmission structure of gear Meshing characteristics and force analysis of worm and worm gear materials

8. Basic types and applications of gear trains Calculation of epicyclic gear trains and transmission ratio calculation of fixed-axis gear trains

9. Classification, structure and material calculation of shaft. Types of hub connections

10. Selection and calculation of basic types of rolling bearings

Fifteen. Professional regulations

1. Laws and regulations on capital construction, architecture, real estate, urban planning, environmental protection, safety and energy conservation in China.

2. Professional ethics and code of conduct of engineering designers

3. China electric power equipment and safety standards and specifications.