HEATING, AIR CONDITIONING & REFRIGERATION TECHNOLOGY DEPARTMENT COURSE SYLLABUS

Transcription

1 ARCHITECTURE, CONSTRUCTION & MANUFACTURING TECHNOLOGIES DIVISION HEATING, AIR CONDITIONING & REFRIGERATION TECHNOLOGY DEPARTMENT COURSE SYLLABUS COURSE NUMBER: Hart 2349 COURSE TITLE: HEAT PUMPS CREDITS: # (2 lectures, 3 labs) PREREQUISITE / COREQUISITE: Hart 1307 & Hart 1301/1303 COURSE DESCRIPTION A study of heat pump, Topics related to heat pump system, reversing valve, heat pump operation, defrost control, supplementary heat, heat pump controls, and heat pump service & troubleshooting. END-OF-COURSE-OUTCOMES By studying this course, students will be able to: Demonstrate knowledge of basic principles of Refrigeration Define the heat pump cycle Describe the basic operation of a heat pump and list its principal parts Explain the difference between a heat pump and an air conditioning unit Explain the operation of the heat pump reversing valve Identify the reversed cycle in the heating mode and cooling mode Discuss the diagram of refrigerant flow Discuss types of outdoor coils and their applications Explain a pilot operated reversing valve Describe various types and classifications of heat pump systems Discuss how temperature, pressure, and time are used to defrost heat pump system Explain heat pump electrical operation Demonstrate heat pump defrost systems Describe heat pump controls & accessories Service and troubleshoot a heat pump system Hoang N Do Page 1 12/14/2009

2 STUDENT LEARNING OUTCOMES SLO # 1 SLO # 2 SLO # 3 SLO # 4 SLO # 5 SLO # 6 STUDENT LEARNING OUTCOMES Given a reading assignment along with lectures, the student will apply the refrigeration cycle related to a heat pump system. Performance will be satisfactory if the student can trace the flow of refrigerant in the heat pump system by passing 80 % on the quiz Given a lab assignment along with demonstration, the student will discuss the difference between a heat pump system and an air conditioning unit. Performance will be satisfactory; the student can identify major components of a heat pump and its accessories by passing 80 % on the quiz and lab assignments. Given a lab assignment along with lectures, the student will demonstrate the electrical sequence of operation of a heat pump system. Performance will be satisfactory; the student can operate the heat pump in cooling or heating mode by passing 80 % of accuracy on the practice. Given the basic electrical circuit, the student will identify the type of heat pump circuit, diagram, and electrical symbols. Performance will be satisfactory; the student can interpret an electrical diagram by passing 90 % of accuracy on the practice. Given the complex electrical diagram, the student will analyze the heat pump circuit. Performance will be satisfactory when the student can troubleshoot electrical problems associated to heat pump unit by passing 90 % of accuracy on the practice. Given a list of heat pump components, the student will be able to differentiate its component and operation. Performance will be satisfactory when the student can demonstrate the operation of each heat pump component by passing 100 % of accuracy on the practice. Hoang N Do Page 2 12/14/2009

3 COURSE POLICIES Attendance Students are expected to attend classes regularly, and to be on time for every class period. Students can be dropped from a class due to excessive absences. Excessive tardiness may be considered absences. Students are responsible for subjects, assignments, and projects covered during their absences. Consult the Student Handbook for more details or visit Academic Honesty Scholastic dishonesty is treated with the utmost seriousness by the instructor and the College. Academic dishonesty includes, but it is not limited to the willful attempt to misrepresent one s work, cheat, plagiarize, or impede other students scholastic progress. Consult the Student Handbook for more details. Students with Disabilities The Disability Support Services Office (DSSO) assists students with physical, learning, or emotional disabilities in developing independence and self-reliance. Students with Disabilities are urged to contact the DSSO at least 30 to 60 days prior to the first day of class. The goal is to ensure that students with disabilities get off to a good start and have the support necessary for them to succeed. The DSSO are committed to compliance with the Americans with Disabilities Act (ADA) and Rehabilitation Act of 1973 (section 504). Student can contact by phone at TTY Fax Course Repeater Policy: Beginning in the Fall 2006, students who repeat a course for a third or more times will face significant tuition/fee increases at HCC and other Texas public colleges and universities. Please ask your instructor and/or counselor about opportunities for tutoring/other assistance prior to considering course withdrawal or if you are not receiving passing grades. Cell Phones All cell phones must be muted, set to vibrate, or turned off during class. Cell phone activity during class is deemed disruptive to the academic process and will not be tolerated. If you need to make or receive an Emergency Call, please leave the classroom. Calculators If the course allows the use of a calculator during class, lab projects, and exams, the student is responsible to bring his/her calculator. Cell phones are not calculators, and are not allowed to be used for that purpose during class, tests, or exams. Student ID Students are required to obtain a Student ID. For additional information, consult the Student Handbook. Parking Rules and Regulations Students are required to follow HCC s regulations regarding parking and permits. For additional information, visit Books, Tools and Supplies Students are required to purchase and bring to class the required textbooks, tools, notebooks, supplies, and writing instruments as required by the instructor. Hoang N Do Page 3 12/14/2009

4 By Bill Whitman; Bill Johnson; John Tomczyck; Eugene Silberstein Publisher: Delmar Edition: 6th Edition Publication Date: 2009 ISBN: By Stephen Herman Publisher: Delmar Edition: 004 Publication Date: 2009 ISBN: 13: Tool list is available to student during the first day of class meeting or find it at HCC Learning Web - Central Campus listed by instructor name: Hoang N Do Dress Code Dress code must be appropriate for the class. Students must dress in a way that clothing and accessories do not compromise their safety, and the safety of others. Proper foot wear is required in all laboratories. Absolutely no sandals or other footwear that exposes the feet will be allowed. Hoang N Do Page 4 12/14/2009

5 Classroom & Laboratory Conduct Proper behavior is expected in all classes and laboratories. Foul language and horseplay are not allowed. Making or receiving cell phone calls during class are not allowed. Sleeping in class is not allowed. Course Withdrawal It is the responsibility of the student to officially withdraw from a course before the official withdrawal deadline. A student who does not withdraw from a course by the deadline will receive an F as the final grade. Also note that under Section of the Texas Education Code, an institution of higher education may not allow a student to drop more than six courses. Student Evaluation Policies/Grading Scales: Class participation % Quiz ( 12 x 30) % Lab ( 6 x 40) % Midterm Examination % Final Examination % Total possible points = 1000 pts Percentage = 100% Grading Points The percentage of total points that students achieve is converted to a letter grade as follow: 94% to 100% = 4.00 A 87% to 93% = 3.00 B 80% to 86% = 2.00 C 73% to 79% = 1.00 D 72% to below = 0.0 F Hoang N Do Page 5 12/14/2009

6 COURSE OBJECTIVES / GOALS Upon completion of this course, the student will able to: Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Class orientation A review of the basic refrigeration cycle Discuss the heat pump types: air to air, ground to air, water to air Describe the basic operation of a heat pump and list its principal parts Illustrate the heating and cooling cycles of a typical heat pump configuration Explain the four way valve with diagram showing how the valve operates Demonstrate heat pump electrical operation Describe the heat pump Defrost systems Midterm examination Week 9 Week 10 Week 11 Week 12 Week 13 Week 14 Week 15 Week 16 Identify heat pump controls and accessories Explain the Scroll compressor operation Practice the heat pump electrical operation in different modes: heating, cooling, defrost Explain a typical heat pump thermostat Explain the function of supplementary heat Determine the balance point of heat pumps Diagnose problems related to heat pump system Troubleshoot heat pump electrical circuits Final Exam Instructor evaluation by using online survey Hoang N Do Page 6 12/14/2009

7 COURSE OUTLINE, CONTENT GOALS & ACTIVITIES CONTENT OUTLINE - GOALS /ACTIVITIES Week 1 Class orientation Syllabus requirements and Assignments Course description and Learning Outcomes Required Textbooks and Tools Advise student to prepare HVAC degree plan Week 2 Review the basic Refrigeration Cycle Principles Discuss the full refrigeration cycle Understand the refrigeration terms List the four major components State the process of operation each component Discuss the superheat and sub cooling charging methods Discuss the differences between a heat pump and an air conditioning unit Quiz 01 Lab - 01 Week 3 Discuss the heat pump types: air to air, ground to air, water to air Define a heat pump system Demonstrate air to air heat pump Demonstrate ground to air heat pump Demonstrate water to air Quiz 02 Week 4 Describe the basic operation of a heat pump and list its principal parts State the sequence of heat pump operation List the major heat pump components and its accessories Explain a heat pump operational modes State refrigerant state within the heat pump refrigeration system Quiz 03 Lab - 02 Hoang N Do Page 7 12/14/2009

8 Week 5 Illustrate the heating and cooling cycles of a typical heat pump configuration Demonstrate a typical heat pump configuration State the heating mode State the cooling mode State the defrost mode State the supplementary heat mode Review electrical diagram rules How to read a schematic? Quiz 04 Week 6 Explain the four way valve with diagram showing how the valve operates Identify a four way valve or reversing valve Understand the construction of reversing valve Identify piping connections of reversing valve State the operation of pilot valve Identify problems associated to reversing valve List procedures to check out reversing valve performance Quiz 05 Week 7 Demonstrate heat pump electrical operation Review schematic rules Select a heat pump electrical diagram Explain the sequence of operation: heating, cooling, and defrost cycle Practice the electrical sequence of operational mode Understand the specific purpose of each mode operation Quiz 06 Lab - 03 Week 8 Describe the heat pump Defrost systems Understand the defrost cycle List the sequence of defrost cycle Discuss the condition of starting defrost cycle Discuss time & temperature initiation Discuss temperature termination defrost systems Hoang N Do Page 8 12/14/2009

9 Discuss air pressure & temperature initiation Discuss Solid state defrost system Mid term examination Week 9 Identify heat pump controls and accessories Discuss a mechanical and electrical means for the heat pump to change modes Identify heat pump accessories: accumulators, check valves, change over relays, crankcase heaters Understand defrost thermostat Discuss the operation of defrost timer Differentiate the mechanical defrost clock and a solid state defrost module Identify low ambient thermostat Understand a metering device how it functions in a heating pump system Quiz 07 Lab - 04 Week 10 Explain the Scroll compressor operation Understand how Scroll compressor works? Differentiate the difference between reciprocating compressor and scroll compressor Understand SEER and Volumetric efficiency, and scroll construction List accessories with a heat pump unit using scroll compressor Quiz 08 Lab - 05 Week 11 Practice the heat pump electrical operation in different modes: heating, cooling, defrost Discuss the electrical operation of heat pump Explain the cooling mode and its sequence of operation Explain the heating mode and it sequence of operation Explain the defrost mode and its initiation and termination Demonstrate the heat pump cycle in three modes Practice schematic for each sequence of heat pump operation Quiz 09 Hoang N Do Page 9 12/14/2009

10 Week 12 Explain a typical heat pump thermostat Differentiate the conventional thermostat and heat pump thermostat Identify different types of diagram of heat pump thermostat Understand the feature of heat pump thermostat wirings Read schematic diagram Interpret the sequence of operation Learn rules how to read schematic Lab - 06 Quiz 10 Week 13 Explain the function of supplementary heat Differentiate the heat pump cycle and supplementary heat Understand the COP and heat pump efficiency rating Practice the electrical sequence of supplementary heat Practice the electrical sequence of emergency heat Understand the thermostat operation in supplementary heat Week 14 Determine the balance point of heat pumps Understand the outdoor temperature affecting the heat pump operation Use the chart locate the balance point of heat pumps Understand the SEER rating Understand the process of charging heat pump in each operational mode Quiz 11 Week 15 Diagnose problems related to heat pump system Define heat pump problems List problems associated to heat pump Troubleshoot specific heat pump problem Recognize changeover problems Troubleshoot heat pump performance problems Check out defrost problems Check out electrical problems Quiz 12 Hoang N Do Page 10 12/14/2009

11 Week 16 Troubleshoot heat pump electrical circuits Practice the troubleshooting techniques Practice the process of elimination Instructor evaluation by using online survey Final examination The End Hoang N Do Page 11 12/14/2009