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  • EC 110: Principles of Air Conditioning I

    3.00 Credits
    CUNY New York City College of Technology

    3 cl hrs, 3 cr An introductory lecture course which teaches the basic principles, equations and analytical approaches used in the design of air conditioning systems. Students learn the physical principles of work, power, energy, pressure, specific volume, density, heat and enthalpy. They learn fundamental properties of steam and air, the pressuretemperature relationships of gases, basic principles of hot water and steam heating systems, and procedures for calculating heat losses from buildings. Prerequisite: None
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  • EC 111: Air Conditioning Systems Laboratory I

    1.00 Credits
    CUNY New York City College of Technology

    3 lab hrs, 1 cr An introductory laboratory course in which students become familiar with piping, tubing, ductwork, soldering, brazing, swaging, threading and flaring. Different types of gauges, manometers, measuring and testing instruments will be used to measure air velocity, pressures and densities of substances. Elements of electricity, basic electrical control circuits and electrical test instruments will be introduced. Prerequisite: None
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  • EC 120: HVAC Systems Graphics

    2.00 Credits
    CUNY New York City College of Technology

    1 cl hr, 2 lab hrs, 2 cr A drafting course designed to train students to read and represent graphically in the heating, ventilating and air conditioning field. They learn to letter, draw linework, use drafting instruments and standard HVAC representations, draw orthographic and isometric projections of HVAC equipment, and work with architectural, structural and lighting plans to lay out HVAC systems. Prerequisite: None
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  • EC 210: Combustion Processes and Equipment

    3.00 Credits
    CUNY New York City College of Technology

    3 cl hrs, 3 cr A lecture course which teaches the design and operation of combustion equipment and boilers. Students learn the properties and handling of fuels, the chemistry of combustion, flame safety controls, boiler design and rating, gas and oil burners, boiler maintenance and safety, design of breeching and stacks, and the control of air pollution caused by combustion. Prerequisite: ENVC 1110/EC 110
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  • EC 211: Heating Systems Laboratory

    1.00 Credits
    CUNY New York City College of Technology

    3 lab hrs, 1 cr A laboratory course in which students work on oil burners, gas burners, steam and hydronic boilers, draft and combustion efficiency testing, boiler and burner safety and operating controls, reading control wiring diagrams and wiring electrical control components. Individual reports are required for each laboratory exercise. Prerequisite: ENVC 1111/EC 111; corequisite: ENVC 1210/EC 210
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  • EC 220: Hydronic Systems Design

    3.00 Credits
    CUNY New York City College of Technology

    2 cl hrs, 2 lab hrs, 3 cr A theory, design and drafting course that teaches the procedures used in designing, analyzing and laying out hydronic systems. Students learn how to calculate the heating load of a building and piping friction losses, and the design criteria for boilers, convectors, valves, pumps and compression tanks. Students do design projects, including the drafting and designing of a complete hydronic system. Prerequisites: ENVC 1110/EC 110, ENVC 1111/EC 111, ENVC 1120/ EC 120
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  • EC 250: Fire Protection,Plumbing and Electrical Systems for Buildings

    3.00 Credits
    CUNY New York City College of Technology

    3 cl hrs, 3 cr A lecture course that surveys selected features and code requirements of building fire protection, plumbing and electrical systems. Students learn the basic principles of building fire safety, with regard to building construction and means of egress, fire and smoke detection systems, sprinkler and standpipe systems and building fire safety personnel. The plumbing section of the course provides the student with information on plumbing system design, and how to determine the capacity and size of water supply and sanitary piping. Lighting design and selection, wiring and codes are covered in the electrical systems portion of the course. Prerequisites: ENVC 1110/EC 110, ENVC 1120/EC 120; pre- or corequisite: ENVC 1211/EC 211
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  • EC 311: Refrigeration Laboratory I

    1.00 Credits
    CUNY New York City College of Technology

    3 lab hrs, 1 cr A laboratory course in which students receive experience in installing, operating and maintaining refrigeration equipment. They learn methods of joining piping and tubing; compressor assembly and disassembly; use of analog and digital temperature and pressure instrumentation; and procedures for recovery, evacuation and charging of refrigeration systems under EPA guidelines. The final project requires students to work as team members to assemble, wire and install a complete refrigeration system. Individual reports are required for each laboratory exercise. Pre- or corequisite: ENVC 2312/ EC 312
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  • EC 312: Principles of Refrigeration

    3.00 Credits
    CUNY New York City College of Technology

    3 cl hrs, 3 cr A lecture course that covers refrigeration theory, applications, equipment and systems. Students learn the properties of various refrigerants, temperature-pressure relationships of saturated vapors, compression refrigeration and heat pump cycles, operating principles of compressors, characteristics of evaporators and condensers, refrigerant flow control devices, applications of pressure-enthalpy diagrams of refrigerants, cooling tower theory and operation, selection and matching of refrigeration system components, and the operation and uses of absorption refrigeration systems. Prerequisite: ENVC 1110/EC 110
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  • EC 321: Air Conditioning Systems Laboratory II

    1.00 Credits
    CUNY New York City College of Technology

    3 lab hrs, 1 cr A laboratory course that teaches methods to evaluate the performance of air handling and air conditioning systems. Students learn how to use a sling psychrometer, balometer, pitot tube and draft gauge, Alnor Velometer, anemometers, computer data loggers and sound level meters. They are introduced to operating, testing and calibrating procedures for HVAC system pneumatic controls. Students will work with different types of air conditioning equipment, from residential and small commercial split and packaged air conditioning and heat pump systems, to a larger chilled water system, which uses a cooling tower and chilled water distribution to separate air handlers. Students write individual laboratory reports on the performance testing of ducts, diffusers, controls and air conditioning systems. Prerequisites: ENVC 1110/EC 110, ENVC 1111/EC 111; pre- or corequisite: ENVC 2322/EC 322
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