RETA INDUSTRIAL REFRIGERATION CHAPTER 1 STUDY QUESTIONS WITH COMPLETE SOLUTIONS

RETA INDUSTRIAL REFRIGERATION CHAPTER 1 STUDY QUESTIONS WITH COMPLETE SOLUTIONS what is the purpose of a refrigeration system? -Correct Answer-to maintain the temperature operators must keep refrigeration systems operating safely and efficiently. Which of the following best describes the area of required knowledge for this to be possible? -Correct Answer-basic physical principles, interpretation of information from temperature and pressure gauges, basic operating principles. mechanical Refrigeration is a series of steps that -Correct Answer-moves heat energy from a space or object to an area where it can Do no harm heat energy always flows -Correct Answer-from an object at a higher temperature to an object at a lower temperature. sensible heat -Correct Answer-is heat energy that causes a change in temperature but does not cause a change in state. -Correct Answer- latent heat -Correct Answer-is heat energy that causes a change of state but does not cause a change in temperature. which of the answers below is an example of heat transfer by convection? -Correct Answer-warm air rising and cold air falling. how does the refrigeration technician / operator know what the conditions are within a refrigeration system? -Correct Answer-by using his knowledge of system basic operating principles to evaluate the temperature and pressure readings. what is the scale used to measure fahrenheit temperatures absolute? -Correct Answer-Rankin which of the following is used to measure the quantity of heat energy -Correct Answer-British thermal units BTUs or calories when calculating the BTUs that have to be removed to change the temperature of a substance, what combination of the following is used? -Correct Answer-pounds of substance, sensible heat, temperature latent heat of vaporization -Correct Answer-is the heat energy required to cause a liquid to become a vapor. pressure is a measure of -Correct Answer-the relationship of a force being applied over a given area. the relationship between temperature differences and heat flow is. -Correct Answer-the greater the temperature difference the more rapid the heat flows. specific heat -Correct Answer-is greater as the substance requires more heat energy to increase the temperature. temperature is a measure of -Correct Answer-the intensity of the heat energy in an object. if the force acting on an area of 5 square inches is 150 lb what is the pressure on the area? -Correct Answer-30 lb./in2 using the vapor pressure curve for ammonia 70 degrees Fahrenheit equals approximately. -Correct Answer-114 PS